Bruce Bratton

Summer Flies

Conservationist Mike Splain coined an appropriate measure of the summertime population level of face flies in Big Sur: ‘apocalyptic.’ Many readers who spend any time outside in the summer away from the immediate coast will know the insects of which I speak. They are small surprisingly fast flies that specialize in buzzing into facial orifices. My friend Catherine suggests we call them ‘eye ear nose and throat experts,’ a nod to ENT medical specialists. What they are officially called, in Latin, remains a mystery to me. No one seems to know. When asking friends recently what they call them, I got “dog pecker flies” and a suggestion that they are officially called “eye gnats.”

Face Fly Season

These flies only recently emerged in numbers in the hills above Santa Cruz. The heat seems to explain their population explosions. This past weekend, I was surprised to be bothered by them at sea level in Big Sur. I avoid all inland Big Sur areas after late Spring until well after the first rains when they disappear. Cool rains are their antidote. Once they become numerous, it is impossible to have an outdoor conversation without what we called back east the ‘New Jersey wave’ – an attempt to shoo the flies away with a constant back and forth motion of the hand, especially near your ears. They seem to love jumping into your ear holes.

Secret Bites

This fly bites. You can’t feel their small bodies land, except in your ears, nose, or eyes…but they will land and bite you anywhere that’s exposed. They don’t bite quickly and easily scare away before they bite. If they do get you, they leave a small welt that, for me, is itchy and persistent. If you watch wildlife – deer and rabbits – you’ll see they are suffering greatly from these flies. Deer ears wag back and forth, bunnies blink a bunch.

Mosquitoes

During the summer, in a fair trade for the profusion of obnoxious face flies, we don’t have to be attacked by mosquitoes, which are nearly absent in our Mediterranean climate. You have to be near water in the summertime to have mosquitoes around these parts. Estuaries, like the Elkhorn Slough, have summertime mosquitoes. If you are lucky enough to have a pond to swim in, you will also have mosquitoes. We are most familiar with mosquitoes that have larvae in the water, but we’ve got another type. Once the rain re-wets the soil, a swarm of certain types of mosquitoes emerge which are able to have a life cycle in moist soil.

Horseflies

My second least favorite biting insect (after face flies) is the horse fly, aka deer fly aka doctor fly. At least I know what these are officially called. Not that knowledge is power. We seem powerless against this troupe of pests. In the family Tabanidae, naturalists call them ‘tabanids.’ Country folk from the south through Central and South America call them doctor flies because they are surgeons, painlessly piercing a hole in your skin through which to mop up blood. They hurt when they leave you because their two parted cutting blade proboscis is barbed and those barbs hurt like the Dickens when they pull out…but then it is too late to get even as they fly quickly away.

I once asked someone in Costa Rica if the doctor flies were bad in the forest and he said ‘in places.’ Somehow, both doctor flies and face flies are clustered in distribution: bad in certain places and not so bad in others. When hiking, it seems you walk into packs of horse flies that, like packs of feral dogs, take advantage of your distraction in swatting one so that another can stab you for her meal. Yes, I said ‘her’ because, like mosquitoes, females need protein in blood to make eggs.

Conversely, Fly Friends

Most folks know what a dragonfly looks like but underappreciate the similarly useful predator called the robberfly. Draggonflies grow up in the water; their larval stage fiercely devours other aquatic life, including small fish, mosquitoes, etc. After they emerge in their winged form…the beautiful things we are more likely to recognize… adolescents move far away from water so we see them many places. Dragonflies zip about catching other insects on the wing, controlling things like face flies, mosquitoes, and horseflies.

Unlike dragonflies, Robberflies are arid environment specialists; but, similar to dragonflies, they are aerial predators controlling many of the insects that we would rather do without. As larvae in terrestrial habitats, robberflies prey on all sorts of other life they encounter. As adults, robberflies eat wasps, bees, dragonflies, each other, mosquitoes, and lots of other flying critters. Robberflies are aerial acrobats with relatively long bodies and wings folded over their tops. I find them most recognizable because of their long legs which they use to grab onto prey.

What Good are Flies?

Clouds of face flies… hovering wining mosquitoes… fleet attacks of horseflies…darting dragonflies and the assassin-grabbings of robberflies…just a few examples of the diverse strategies of our invertebrate relatives at making life work.

Why should we like flies? Think of flies as the aerial wildlife that they are. Right there in front of you, all around Santa Cruz, you can observe an aerial ecosystem with prey and predator interactions. Those insects emerge from aquatic or terrestrial systems and can be used as indicators of ecosystem health. Bugs feed bats, frogs, and birds, critters that most people want in their lives. Certainly, farmers want those bug eating animals doing their crops a favor.

Bug Friends

There are many ways to be bug friendly: don’t go ballistic over the face flies! If I find out what the face flies are…and how folks approach their control…I’ll let you know. Most folks don’t much care about mosquito control as they are close to nonexistent. No one I know has ever figured out how to control horse flies and they aren’t so numerous as to warrant much effort. With time, we may learn how to nurture robber fly populations.

We also want to support organic farming practices that avoid synthetic pesticides which continue to impact the insect world far from farms. As opposed to Europe, the United States still allows neonics, aka neonicotinoid, a type of pesticide that is used in most corn and soybean crops and which has been shown to negatively affect honeybees, so probably also impacts other non-target insects around those vast croplands.

As we are thinking about how we can use fewer pesticides around our homes we can also avoid electronic bug zappers. Seemingly intelligent people are still powering up the UV lights that attract many insects to an electrical killing screen, a bug zapper. The UV light doesn’t attract biting insects but rather kills a host of other insects giving the owners a sick sense of success as the machine makes the zapping noise over and over as more and more insects are fried on the electric screen.

More Bugs!

Think about what you can do to attract more, not fewer, insects around your home: nurture native plants, especially wildflowers that blossom in all seasons. Coyotebrush, an easy to grow shrub, is blossoming and full of insect pollinators right now, in the dry depths of summer. Diverse native plants including ones that blossom at all times of the year will contribute to native insect diversity. If you are a generous donor type, give funds to the Xerxes Society, an incredibly successful and efficient nonprofit group devoted to conservation of invertebrates.

-this post originall published in Bruce Bratton’s amazing weekly blog BrattonOnline.com

Grazing Goats for Fire Safety

One of the more common questions I’m getting these days is: what do you think about all this goat grazing for fuels reduction? I suspect the questions are coming to me because folks want to hear about my ecological perspective about goat grazing effects. There are other concerns, and I try to wrap those into this essay.

Goat Grazing Benefits

Grazing goats can produce many benefits from food and fiber production to wildfire fuels reduction, invasive species control, ecological restoration, and endangered species recovery. Goat meat is popular in many different people’s cuisines, and raising goats locally reduces transportation costs and resulting greenhouse gas emissions. Many have criticized the beef industry for greenhouse gas emissions impacts, this might be a better solution for those who desire meat as part of their diet. Goat hair (angora, cashmere, etc) is a useful fiber in place of sheep’s wool, and goat skins are used to create and repair drums and banjos. Is anyone doing these kinds of things with the herds of goats used for fuels reduction?

Goat herds are mainly being used for reducing the fuel loads that could make wildfires more catastrophic. Goats are useful in this way as they readily eat brush as well as grass. Sheep, cows and horses mainly eat grass, though they’ll nibble at shrubs, too. Goats like to eat shrubs so much that they will get on their hind legs and pull at branches as far up as they can reach. They’ll even climb trees!

Properly managed goats can help to reduce the cover and reproduction of invasive plants, including shrubby species. Goats can reduce thistle patches, mow down infestations of invasive grasses, and tear up French broom. These things qualify as ecological restoration, but goats can do more than just this…

By properly managing goats, we can help to restore evolutionary grazing disturbance regimes on which ecosystems and endangered species depend. By reducing the growth of grasses, or the thatch that grasses make, goat grazing can facilitate the germination and survival of wildflowers, which also helps restore pollinators. By grazing brush, goats can keep coastal prairies more open, conserving habitat for grassland dependent birds, such as black shouldered kite, burrowing owl, and grasshopper sparrow. When livestock reduces thatch in grasslands, grasses are less competitive and wildflowers flourish; so, endangered butterflies like Bay checkerspot which depends on wildflowers can thrive.

Cautions about Goat Grazing

Note that I’ve said ‘properly managed’ a lot. Saying ‘goat grazing is good’ is like saying ‘weather is good’ – both statements are nonsensical without details. The four variables to control with livestock grazing are seasonality, intensity, duration, and frequency. Grazing in the winter growing season can help reduce the growth of cool-wet-season grasses and so favor wildflowers (and thistles!). Putting many, many goats in an area is more intense than just a few. Putting many, many goats in an area for a long period of time is more impactful than a short period of time. Returning a herd of goats to an area more- versus less-frequently makes a difference. I just witnessed a recently goat-grazed public park area near San Rafael where there was almost no grass left and the oak and eucalyptus trees had been moderately damaged by goats gnawing through bark. Grazing goats in the early summer certainly made sense to reduce the potential for soil compaction and erosion on the steep slopes I was visiting. But, on the ungrazed adjoining areas, native tarplants were in blossom – I’m not sure if those will come back in the goat grazed area so that pollinators will have something to visit. Small oak trees that had goat munched bark scars from the previous year were dying or dead. I questioned not only the need to graze the ground so hard as to negatively affect native trees, but I also questioned the health and welfare of the animals: was it necessary to make those animals very, very hungry to eat the grass down to near dirt and then start gnawing on tree bark?

Other cautions about goat grazing I wonder about: flies, manure, and weeds. Do communities near goat grazing areas get more flies, even biting flies? Does the manure wash off the grazed barrens and into streams and cause pollution? Are the goats transporting weed seeds onto the property from an area they grazed right before they were temporarily transported for fire control? All good cautions to ask about when reviewing the costs vs. the benefits of goat grazing.

The last caution I have is about training mountain lions to eat goats. I’ve heard too many folks raising goats blame the mountain lions for the loss of their animals when the fault almost certainly lies with careless livestock managers. Proper protection includes guardian dogs, electric fencing, and lion-proof night pens. When folks don’t properly protect goats, mountain lions figure out a way to eat them…and then become accustomed to those easy meals. At that point, the human has effectively trained the mountain lion to eat livestock and then there’s a problem.

Challenges Ahead

It seems that goat grazing is an expanding enterprise for fuels reduction, so how do we make it work better? Part of the solution is already on the table: all livestock grazing programs must be approved by a state-licensed Certified Rangeland Manager. This is a parallel program to the Registered Professional Forester who signs off on any timber production in California. A Certified Rangeland Manager has the skills to outline a plan to maximize the benefits and minimize the problems of a goat grazing operation.

Even with a good plan, there are significant challenges ahead for goat-led habitat and fuels management. For instance, given the oversight needed for each herd, how do we afford the shepherds and still affordably manage goats? Goats are escape artists, so shepherds are necessary to keep them contained and well supervised, if only to assure that areas don’t get overgrazed and the goats stay healthy and safe. We need to find the right way for shepherds to have a good standard of living and decent working hours in an economy that already has a difficult time paying a living wage. If we can find and keep the labor, how do we train enough people to pay enough attention to the nuances of habitat management so that we restore habitats instead of destroy them while we seek a more fire-safe landscape?

In Conclusion

Next time you see goats arrive to do some work, I’m hoping you ask some of the questions I posed above. Only by having respectful dialogues about these issues can we hope to find the ‘right’ place for goat powered fuels reduction and habitat restoration. Such conversations can elevate the intelligence of all parties as we seek a better way to live on this super biologically diverse, fire prone landscape.

-this content originally published at Bruce Bratton’s wonderful weekly blog: BrattonOnline.com sign up now and save on the already low, low price of nothing (donations welcomed).

Caring about Public Land Management

What’s going on with public land management around you, and what are you doing about it?

Most citizens of the U.S.A. state that they want healthy wildlife populations and clean water for their communities and for future generations to enjoy. And yet, repeated surveys of Santa Cruz County residents suggest declining efforts to learn about wildlife so that individuals could take action to protect assure wildlife conservation. We can see this decline also reflected in our activism and politics. When was the last time you heard about an environmental activist group taking a stand to protect local wildlife? Which politician can you name that had environmental conservation as a major portion of their platforms? Have you looked at the agendas or minutes from Santa Cruz County’s Commission on the Environment or Fish and Game Commission – both advisory bodies to County Supervisors? I challenge you to find any evidence of solicited or unsolicited advice to the Supervisors. In short, our County, at the top of the nation’s biodiverse counties, is effectively asleep while their precious natural heritage is being rapidly eroded by neglect. I frequently hear how much Santa Cruzans appreciate the wildlife, the open space, and the natural beauty of this area. If we take these things for granted and do not make efforts to be involved with conservation, I think we know what will happen to these values: they will decline, whither, and disappear altogether with time. It is time to make a shift, and the shift is best focused on our public lands management.

One of the most important things we can do as citizens of this county is to be involved with the management of the public lands around us. There are many ways to be involved in wildlife conservation on public lands throughout the region: volunteering for stewardship, rallying political support for increased conservation on public lands, and supporting environmental conservation organizations. There are three main threats facing nature conservation public lands: changed disturbance regimes, invasive species, and poor management of visitor use. I discuss each briefly in the following and present ways that you might be involved in solution for improved public lands management.

With climate change and increased development encroachment on natural areas, natural disturbance regimes, such as fire and grazing, are rapidly changing presenting a high degree of danger to nature conservation. With climate change, fires are expected to be more frequent and more severe; this is exacerbated by increased human interactions at the Wildland Urban Interface where accidental fires more frequently occur. Likewise, we have removed tule elk and pronghorn and it is becoming increasingly difficult for natural areas managers to use livestock to mimic natural grazing regimes. With both fire and grazing, public lands managers need more public funding to increase their ability to manage natural systems. There needs to be more public outcry and support for both funding and expertise within those agencies to improve lands management. Those kinds of support are also important for invasive species management. A different kind of support is needed for better management of natural areas in the face of poor visitor use management.

Badly managed visitor use in natural areas is a major cause of concern globally for nature conservation, and locally this seems to be nearly entirely ignored. The most glaring evidence that this is a problem is the nearly ubiquitous and unquestioned philosophy that increased access to natural areas is an important goal for nature conservation. Look carefully around our local parks agencies and you’ll also notice that there are no personnel trained at managing the conflict between nature conservation and visitor use, the field of study necessary to assure nature conservation in parks. The most recent planning effort for visitor use in a public park was with the BLM’s Cotoni Coast Dairies property, a real disaster in public process with recreational infrastructure development proceeding apace despite an active and unsettled legal appeal by a very small of citizens who have seen too little community support. Of the many larger, environmental groups in the area, only the Sempervirens Fund has offered publicly stated concern…”Important details remain to be determined and we look forward to working with BLM to resolve them.” For the grave impacts to nature from visitor use in natural areas, there seems to me to be a need for a fundamental shift in both public perception and in the public lands management agencies to better recognize and address this issue. The following section outlines some actions you can take to help this process forward.

There are many ways, big and small, for you to be more involved with the paradigm shift needed to better address the serious issues surrounding visitor use management in natural areas. First and foremost, many more of us should become educated about the science documenting the concerns and how those concerns are addressed through social and environmental carrying capacity analysis and adaptive management. Social carrying capacity analyses define the limits of acceptable change from visitor use conflicts: conflicts between different types of uses (for instance, mountain bikers vs. passive recreational use of families with children) or conflicts due to overcrowding. Ecological carrying capacity analyses define the limits of acceptable change for soils, biota, or other natural phenomenon (for instance, amounts of trail erosion, wildlife such as cougars that are easily disrupted by visitors).

Another thing we can do to help the situation of poor visitor use management in our parks is to advocate for improvement. We should tune our senses to notice negative impacts of visitor use and then aim our activism towards change: make formal reports of issues to natural area managers, follow up on those reports, and also message higher level administration, commissions overseeing those agencies, and politicians who are invested in agency oversight. Persistence will help. Let’s also vote for politicians who promise to help. And, let’s support environmental groups who promise to work on these issues. Finally, many more people who care about these issues need to be involved with public lands management planning. Currently, mainly exploitive and well-funded non-passive recreational users are organized and vocal during these processes (i.e., Outdoor Industry Association funded groups like mountain biking advocates). Meanwhile, traditional conservation groups like the Sierra Club and Audubon Society have shied away from such issues due to either controversy or co-option. We need a new group or need to sway old groups to take these issues on.

-this article originally appeared at Bruce Bratton’s weekly BrattonOnline.com If you haven’t subscribed, I recommed it: “The last great news sources of Santa Cruz.”

Toyon

There’s an important plant showing off right now. Cast your eyes across our hillsides or hike deep in the ravines, and you may catch a glimpse of large multi-trunked treelike shrubs festooned with bright white blossoms. In December, these plants will be weighted with bright red berries, just in time for the holidays. Branches with berries were so popular as wild gleaned holiday décor that Californians had to pass laws to prohibit harvesting in the early 1900’s. This big shrub or at times small tree is called “toyon,” Hollywood, or Christmas berry.

Madrone-like Different Apple

The plant’s genus name “Heteromeles” means ‘different apple’ (“hetero” translates as ‘different’ and “meles” references the apple genus ‘Malus’), which makes sense because this super shrub is related to apples, which are also in the rose family. You can see why it is a rose relative if you examine the small flowers and find that they are five-petaled, like wild roses. I captured a photo of a honeybee visiting Toyon flowers (note the attractive red leaves in the background). Like roses (and apples!) the flowers have an alluring scent…some say like Hawthorn – but, does anyone know how to describe hawthorn smell?? Oh, so much to learn…in Nature, there’s always more to learn.

More plant name etymology…as we already covered the secrets behind the genus name. Botanists often play most playfully with “plant nomenclature.” As a profession, they might be the punniest. This shrub-tree’s species name is “arbutifolia” referring to the shape of the leaves, which are like leaves in the genus Arbutus, which includes our native madrones. I recognize that the overall leaf shape fits and that the leaves are extremely waxy like madrone leaves. But, Toyon leaves are a darker green and have little teeth on their margins, unlike madrones. Nevertheless, if you cut branches of this plant for the holidays, you’ll get both a dark green ‘holly-like’ leaf color as well as the bright red distinctly holly-like berries- a fine combination.

Do We Eat Them?

Yes, we do eat them. The original people of this land made delicious food out of Toyon berries. The name Toyon is a Spanish-era mispronunciation of the native peoples’ name “totcon.” There is a problem, though…when ripe, the seeds are full of cyanide, so one must process the berries to get rid of that poison. I don’t know anyone who has done that work, and I leave the berries for the birds.

What Else Do We Do with Toyon?

Toyon wood is epically useful but little known these days. Know anyone with a toyon wood anything? Native peoples used the wood for poles, arrows, bows, pegs, pestles, frames for furniture, bowls, etc.

Nowadays we use the plant in restoration and habitat management. The birds, pollinators, and mammals like it a lot- a prime candidate for restoration in many ecosystems.

Wildlife Food

Wildlife worship at the Toyon many times a year. Now, when the shrubtrees are in bloom, they vibrate with pollinator noises in all octaves. Being one of the only early summer abundant sources of pollen and nectar, Toyon is the go-to nectar bar for a wide variety of buzzing floral resource collectors. The distinct drone of European honeybees emanates from the flowering canopy, joined by the high whine of numerous flies and the deeper tones of larger native bees. And then there are fruit…

Cedar Waxwing on toyon (copyright by Creative Commons and photo by Flickr user Becky Matsubara).

The fruit take a long time to mature, a long wait until berries are ripe and delicious, but as with the good fortune of early summer flowers, the fruit arrives at a time when few other such foods are available. One of my favorite wintertime visitors, flocks of noisy cedar waxwings descend on a toyon and feast joyously on the berries. The amazing photo above is copyright by Creative Commons and is by Flickr user Becky Matsubara. Robins, too, regular fruit eaters, gulp them down. I’m not sure how coyotes reach the Toyon fruit around here, often too high to reach. If there were bears still around, they would feast on Toyon berries, probably tearing off limbs that bore berries too high for their reach. All of these critters disperse Toyon seeds with their poop. If you aren’t lucky enough to have a waxwing-dispersed toyon sprouting up in your home’s vicinity…or, if an open space near you doesn’t sport crowns of Hollywood stars…there’s always a chance to plant them!

A mature toyon near Davenport, California

Landscaping with Toyon

Toyon is a great landscape and restoration plant when you want a large, resilient, and wildlife friendly shrub. The species isn’t the fastest growing, but it is quick enough! After 10 years, you can count on a 12’ tall, 10’ diameter plant with a full round crown chock full of flowers. What you can’t count on is a full canopy of leaves…or red berries…it seems that those only occur on the driest of sites – mine get mildewy leaves that fall off readily and the berries turn moldy black in many years. The flowers, though, consistently appear in larger and larger bee-covered masses. Count on multiple trunks with smooth grayish bark that are easily pruned up to be more fire safe. If there is a fire, you can count on Toyon to bound back with new sprouts so perhaps once established a shrub can live a very long time. Another bonus- although Toyon is ostensibly evergreen, it does shed its leaves a few at a time…and as those leaves get ready to shed they turn a bright and beautiful red.

I took this photo of a 10 year old toyon just today, high above Davenport- in bloom and very lush looking.

Your Task

Your homework, should you decide to take my advice, is to spot the Toyon. There really aren’t that many trees or near tree shrubs to learn in our area, and this one is a great one to add to your repertoire of local knowledge. Where will you go to find this species???

-This post originally posted by Bruce Bratton in his weekly blog BrattonOnline.com

Botta Pocket Gophers

Pocket gophers are an important and very common mammal in many habitats in our area, so it seems appropriate to learn a little more about them. Most people know them as pests of ornamental plants or crops, but they play important roles far beyond that pestiferousness. And, just look at how cute they can be- photo by Flickr user Chuck Abbe:

What is a Pocket Gopher?

Why is this critter called a pocket gopher? No, it’s not because of some 1970’s fad of domesticating gophers and putting them inside pocket protector-lined pockets. BTW, this fad fantasy must include pocket protectors because gophers have sharp teeth that they habitually gnaw with to wear them down…without such nervous-seeming gnawing, their teeth would be 11” long by the end of the year. This fad could really take off one day because pocket gophers are not legally protected by the State!

Back to the subject at hand…the ‘pocket gopher’ name comes from odd pockets that these critters use as their cargo containers, hauling soil or food. Those pockets extent from the cheeks back to their shoulders. Inside those furry pouches, they haul food into their burrow, creating food storage piles in a deep portion of their burrow system. This food pantry also serves as their sleeping, baby raisin area, so food’s close at hand. That makes me think that maybe there’s a niche for food-storing bedroom furniture for humans!

Local Gophers

Our local species of pocket gopher is the most widespread in California, and so there’s lots of information around about its natural history. Our species, Botta Pocket Gopher, is almost everywhere in the state except the high Sierra Nevada. Like most pocket gophers, the males of this species are larger than the females. So, its likely that the Jury Room sign that was posted for years ‘Home of the Giant Gopher’ referenced a male. Not that you’d try, but you tell pocket gopher species apart from where they live and then the size of their rear feet, the shape of their ears and the relative size of the dark area around their ear.

Territorial Gopher

Pocket gophers are very territorial, protecting their extensive burrow system which represents the extent of their feeding ground. The size of their territory depends on how much food there is, but they range from the size of a tennis court or, sometimes, you can fit 10 gopher territories in the space of a tennis court. If you kill a gopher, its burrow system won’t be vacant for long…

Waves of Dispersing Gopher Young

During breeding season, gophers become less territorial, allowing visitors into their burrows, which seems sensible for reproduction. Where people aren’t watering plants, and the summers are so very dry, pocket gophers have a single breeding season in late winter. They bear 2-5 blind babies (aka ‘pinkies’). Gophers kick these offspring out of their burrows as soon as they are weaned (40 days after birth), and those young have to find a place to live. Those dispersing gopher children are why folks suggest leaving root protection cages out of the ground 6 inches. That wave of dispersing gophers will try to occupy whatever burrows they find…including the burrow complexes that have been abandoned by other gophers due to trapping or old age. People think that our gophers only live 3 years.

Gophers Drought Solutions

Gophers are soil engineers and are so good at their work that they are known to be an important solution to California’s water crisis.

Some have suggested that restoring mountain meadows in the Sierra Nevada could store as much water as two new giant reservoirs. Part of this would be done with reintroduction of a different rodent, the beaver, but another part is already under way by the pocket gopher. Pocket gophers are excellent hydrological engineers, assuring infiltration of snow melt and rain through the soil through their burrows, which include specific drainage architecture. Gophers can drown and need to breathe air, so their burrow systems must accommodate drainage for the rainy season.

Native Meadow Gardener Gopher

The better local natural historians around us will already know about the super-diverse and super-interesting mima mound meadows around Santa Cruz. These are caused by eons of soil movement by gophers, which means that they are literally “ecosystem architects.” Atop the mima mounds, there are poppies, lupines, purple needlegrass and other ‘dry’ loving species; between the mounds there are buttercups and rushes as well as streams and pools of water weeping from ancient gopher mounds during the winter. Dry and wet gopher-created ecosystems in close proximity makes for extraordinary species diversity.

Gopher Burrows: Habitat for Other Creatures

All of those gopher burrows are quite inviting to other creatures. In other places, scientists have described insect species that only live in gopher burrows. I see a species of brown fly come out of gopher burrows around here- there’s probably much more to be discovered. Pocket gophers don’t much like to invite things to enter their homes, so they plug their holes with a distinctive soil plug. However, I’ve seen newts poised for nocturnal forays at the mouths of gopher burrows. Others have seen rare California tiger salamanders using gopher runs. Those tunnels would of course be cooler and moister than the surrounding habitats in the summer. I commonly see the aptly named gopher snake winding its way from one gopher hole to the next, only the middle of its body visible. If gophers plug their holes, how do the snakes find their way in? Somehow they know…I saw a gopher snake recently quickly and energetically ‘dive’ into a gopher-strewn dirt pile and disappear quickly. Many are thankful for gopher predators because of the damage gophers can do to human-plants. Gopher snakes and alligator lizards are the most effective gopher control, because they can get down in the gopher burrows and eat the pinkies, controlling many gophers at one sitting.

What to do About Gophers

There are plenty of websites with information about how to, and many tools to, kill gophers, but is there another way to coexist with these creatures? I have spent a fair amount of money and time killing gophers or protecting plants from gophers using buried metal caging, and I have a few suggestions for gopher coexistence.

Lawns are pretty much passe at this point in California, so how about letting gophers make their homes in what would have been a lawn? The only drawback I’ve experienced is the mounds of dusty soil that they pile up, making a mess of what I want to be level ground without trip hazards. Use a gravel rake and smooth those mounds out and you’ve got a great seedbed for wildflowers to sprout from next spring. Yes, with all of that soil disturbance, gophers are doing a great job of preparing wildflower beds- poppies, lupines and other wild pea relatives, new yarrow seedlings, redmaids, owls’ clover, and lots more appreciates that fresh ground.

Another thing to do is choose plants that gophers don’t bother. Colt rootstock for cherry trees is highly resistant to gophers. Wild rushes (especially Juncus patens) stay green through the summer and are so tough that gophers can’t destroy them.

A final solution is to cultivate meadow voles, which are superior at running gophers out of their tunnels. Voles like lots of mulch- put mulch around and voles proliferate…and the gophers run away (or die at the homicidal teeth of the vole militia).

I’d like to see more discussion about human-gopher coexistence, so these important creatures can continue to do so much good across our region.

-This post originally presented as part of Bruce Bratton’s BrattonOnline.com weekly blog…check it out!

Birds from the Coffee Region

Many of us enjoy both delicious coffee and the fascinating birds that hail from coffee growing regions: how do these two seemingly disparate subjects relate to our daily lives?

Coffee Botany

Coffee shrubs are beautiful, lush shrubs, 6-15’ tall and wide with many stems and glossy oval leaves with long ‘drip tips’ – a common feature in rainforest plants that help shed water. I have a potted, indoor coffee plant and many of my friends have raised them, but they are notoriously finicky to care for and especially prone to indoor plant pests. That coffee plant is the thirstiest of my house plants, wilting quickly when drying out: at least it is good at communicating! That thirstiness makes sense as coffee is naturally an understory plant, originating in the lush damp shade of African tropical rainforests.

After 5 years, my coffee plant blossomed this spring, and I was reminded of it’s very sweet smelling (like jasmine!), small white tubular flowers. Now, I’m looking forward to the tasty fruit, which is confusingly called a ‘cherry’ and turns deep maroon-red when ripe and is soft-fleshy (slimy?) sweet (like hibiscus) and full of antioxidants. In the center of the red fruit, there will be a pair of seeds…called coffee ‘beans’ – another misnomer associated with this plant as the plant isn’t related to cherries or beans! Whenever I encounter a small red fleshy fruit, I’ve been trained to suspect the plant co-evolved with birds for seed dispersal. Even when coffee is grown far from its African origins, there are birds that devour the fruit, but cultivated coffee has a more important relationship with tropical birds.

Coffee Farms and Birds

Coffee is a lucrative tropical farming product and is cultivated on 27 million acres. Tropical regions are the most biologically diverse areas of the planet with many species still being discovered. Conversion of tropical rainforest to agriculture is occurring rapidly, threatening that biodiversity. Soybeans and palm oil are two crops that are expanding rapidly, but coffee is much more lucrative per acre. And coffee can be grown more in harmony with tropical biodiversity, but only if it is ‘shade grown.’

Shade Grown Coffee

As reviewed by independent, peer reviewed, published science, the only credible shade grown certification is from the Smithsonian Migratory Bird Center, carrying the logo inserted here.

The standards for this certification include maintaining real shade provided by diverse overstory trees as well as organic practices (certified by another agency)…and diverse other plant life, maintenance of natural mulch, and protection/buffering of waterways.

These standards have been shown to support native bird life as well as providing habitat for many other native species, including mammals.

The Effects of the Central Coast’s Coffee Shed

Here on California’s central coast, we are lucky to have both coffee AND birds that hail from coffee growing regions. Judging from the aroma of roasting coffee, the many businesses supported by serving coffee, and the plethora of local coffee labels, our region greatly appreciates this caffeinated beverage. I am curious about how many acres of coffee farms are needed to support Santa Cruz County’s coffee-drinking habits – anyone know? We can call that our ‘coffee-shed.’ If we support a coffee shed that nurtures the birds that come visit us in the summers, we can look into those birds’ sparkling eyes through the steam of a latte and be proud of those connections…

Beautiful Migratory Songbirds

There are many migratory bird species that come to California’s central coast for the summer to nest, raise young and store up enough reserves to return south before our winter gets too harsh. I’ve been enjoying steaming cups of shade grown coffee while watching two beautiful tropical migratory songbirds this summer. The startling colored thick-billed black headed grosbeak is fledging young right now on the Central Coast. Check out this photo from a Flickr site by Kersti Niebelsek; maybe this striking image will inspire you to purchase certified shade-grown coffee and grab some binoculars to see the bird in the wild.

The other striking species that lights up my mornings and gets me pouring boiling water to drip through freshly ground, certified shade grown coffee is the lazuli bunting. Be similarly inspired by another extraordinary photo, this time by Flickr user Julio Mulero who captured this pretty bird at Ed Levine Park in Milpitas.

Both that grosbeak and the bunting may have traveled from the coffee growing region of southern Mexico, where they spent last winter. Other species come from coffee growing areas even farther away, including: ash-throated flycatcher, olive-sided flycatcher, Wilson’s warbler and yellow warbler. That last deserves a photo, as well. That photo is compliments of Flickr user Kelly Colgan Azar.

Finding and Procuring Certified Shade Grown Coffee

Surprisingly, it is Very Difficult to find certified shade grown coffee in our area. You can always search the internet and have it delivered! Last I checked Whole Foods had one of its wall of coffees that was certified shade grown. Not so for any of our other local grocery stores! You can find all sorts of supposedly “bird friendly” or “shade grown” coffees, but only those with the certification shown above are verifiable. Because shade-grown coffee produces less per acre, you are going to pay more for it. Think of those extra dollars going to the trust funds for these beautiful birds.

This post originally published as part of my series with Bruce Bratton at BrattonOnline.com Thanks, Bruce, for keeping Santa Cruz actively informed!

Land Ethic

Have you formed ethical standards for your relationship with Earth? Most people teach ethical standards to children in what behaviors are ‘right’ and how best to treat other people. As we grow, we learn through experience how to build on those ethical standards to be good people. But, few people I’ve met have taught their children the ethics of their relationship outside of the human world. How would you answer questions about how to act ethically with the natural world?

Aldo Leopold wrote possibly the most influential modern treatise on this subject, which was published in his Sand County Almanac and entitled The Land Ethic. I suggest you read that 14 page essay first and this second, as I supply a framework for how his thoughts apply in our shared place, the central coast of California.

We Hold These Truths…

Are these statements true to you?

Our food, air, and water are products of Nature
Nature is very, very complex: there is wisdom in considering the precautionary principle when considering impacts to the natural world
As citizens of this particularly ecologically rich place, we have a particularly high level of responsibility for nature conservation.

Land as Economic

As Leopold suggested was normal throughout the USA in 1949, so it is today…we citizens of central California are continuing to commodify nature. We treat our agricultural lands as short-term profit-making properties; most are barely cover cropped so that soil is washing away at tremendous rates, many agricultural properties are awash with fertilizer and chemical pesticides that have had too little human health and environmental impact study. Our conversations around property circle around what ‘rights’ we are afforded, not what duties we have: even knowledgeable people lack the information to well manage private property. Land Trusts commodify land that they hold, managing negatively impactful agriculture, grazing, and other uses and expanding recreational use with little idea of its impacts. Public parks are even more guilty of commodifying nature for highly exploitive, barely planned/monitored recreational uses that are rife with negative impacts on soil and wildlife. Economic interests drive these types of nature commodification, those interests are embedded in even local politics, yet few people vote for candidates based on these types of issues.

Aldo’s Land Ethic

“A thing is right when it tends to preserve the integrity, stability, and beauty of the biotic community. It is wrong when it tends otherwise.” – Aldo Leopold

What would happen if we all used Leopold’s land ethic when weighing proposals on natural lands around the Central Coast? For instance, how would application of that ethic affect how you feel about the development of the Homeless Garden Project in the middle of Pogonip Greenbelt’s main meadow? What about the way proposals have been made for the new trails at Cotoni Coast Dairies? What would you think about the plans for post-fire re-building of Big Basin State Park’s visitor center? How do your feelings on those proposals compare with how you think about applying Leopold’s Land Ethic to the planned wildlife tunnel under Highway 17…to restoring the Scott Creek Marsh on the North Coast?

Is Education Enough?

Most people with whom I discuss the Land Ethic emphasize a problem Leopold anticipated: they focus on a perceived need for more education before it will be possible to apply the Land Ethic. I have spoken with leaders and practitioners of environmental education around the Monterey Bay, and they all reiterate the primary need for education until a more ethical approach to Nature can take hold. And yet, almost none of these educators are familiar with well-established tools to change human behavior towards the environment. I wonder how many would be able to help others by describing what a Land Ethic might be?

The same goes for most staff whose jobs entail environmental protection. Parks law enforcement staff rarely give tickets for environmental destruction, preferring ‘education.’ Municipal planning agency personnel rely almost entirely on education in hopes that it will serve to protect nature in the Central Coast. The personnel responsible for protecting whales and other marine mammals in the Monterey Bay also entirely rely on education to accomplish their mission. With the many interactions I’ve witnessed with these individuals, none have ever tried to help elevate awareness of the ethics of caring for Nature. I have heard political decision makers cite anything like the Land Ethic very, very few times.

The Central Coast has a large variety of environmental organizations focused on environmental education. I hope that they will incorporate the Land Ethic in their curricula, including the many available local case studies to further illustrate lessons.

A Place for Science?

We are lucky to have the California Environmental Quality Act (aka CEQA) as a potential to start the conversation about portions of Leopold’s suggested Land Ethic. For instance, lead agencies using CEQA might ask ‘How does the proposed project affect the integrity of the biotic community?’ What if this question were posed about the numerous wetlands that will be obliterated along the proposed Rail Trail on the North Coast? I would anticipate that the lead agency would pick scientist-consultants to outline a restoration program somewhere along the coast that would ‘improve’ the integrity of wetlands in the project vicinity…checking that box in CEQA…and proceeding with the project. The ‘improved’ wetlands would likely have some attention for restoration for 3 years, but with no long term proposal for management or monitoring. It is very likely that the more correct answer to the Land Ethic-informed question would be ‘the proposed project negatively affects the integrity of the biotic community.’ But, even in the unlikely possibility that the lead agency received that answer from their paid consultants, they would likely proceed with a “statement of overriding considerations” and proceed anyway…because there is no chance that anyone would be held accountable during their election to political office. In short, there is a lot of demand for consultant-scientists to create plans that appear to address the Land Ethic but which in fact are just the excuse a project proponent needed to proceed with their destruction of Nature.

The Solution?

Any decision maker in our region whose work impacts the environment should have access to the smartest ecologists around, so that they receive the best information possible to make excellent decisions to conserve nature. For a while, this happened in the Santa Cruz County Planning office. That model could expand. There are certainly a very many well respected biologists in our region who we might learn from!

-this originally published in Bruce Bratton’s weekly blog BrattonOnline.com

Save the Bees!

As the fields of lupine blossom at higher and higher elevations, other flowers follow in wave after wave of color and design, and the bees dance and hum celebrating each new unfolding.

Bees! There are so many types of bees: mason, bumble, leaf cutter, long horned, orchard…For each of those, there are many species. For instance, there are 10 species of bumble bees in Santa Cruz County. As with most species on Earth, all those bee species are in decline.

Flower Pollination

Bees pollinate flowers. Sure, there are other types of pollinators such as butterflies, moths, and flies. Even some types of mosquitoes and ants pollinate flowers…as do hummingbirds. But, bees are the most important pollinators in general.

Evolutionarily, bee (and other) pollination gives plants the advantage of shaking up the genetics, helping populations of plants be more resilient to change in climate, disease, and even fluxes in pollinator communities.

Invasion of the Honeybee

Honeybees are not native to our area, and yet they are everywhere. They were introduced in the late 1600’s to the United States and then moved around more easily in portable hives in the mid-1700’s. In California, beekeepers earn money by strategically moving large numbers of hive boxes into agricultural areas to perform pollination services. When they aren’t doing that work, they must find areas to put those boxes where there are enough flowers to feed the bees and keep them healthy. Especially in wintertime, coastal areas in California are prized by beekeepers because it is not too cold for flowers; something is bound to be in bloom year-round. At the same time, honeybees have escaped into the wild, becoming naturalized. Swanton’s Jim West has documented a honeybee colony year after year in an old redwood tree for most of his 74 years of life.

Honeybee on Ceanothus; nonnative bee on native shrub

The Good Honeybee

Most of us know about all the good honeybees can do from pollination to honey and wax production. Almond growers in California’s Central Valley have been particularly worried about the ongoing problems with honeybees as they have been reliant on imported bees to pollinate their early-flowering trees so that they will make nuts. With the mysterious Colony Collapse Disorder, honey and beeswax prices have increased, making us appreciate even more honeybee production.

The Bad Honeybee

Most people I talk to are unaware of the problems honeybees can cause, including competition with native pollinators, plant community changes, invasive plant species proliferation, and disease vectoring. I was lucky to attend UC Santa Cruz at the same time as the brilliant Dr. Diane Thomson who has studied honeybee and native bee interactions in our area for decades. Her research adds to a growing body of scientific evidence warning us about the negative consequences of honeybees to native bees, with whom they compete. That science has suggested that 20 honeybee boxes rob the food from 2 million native bees. This competition can cause some plant species to be pollinated and not others, shifting the composition of plant communities. And, because honeybees can pollinate some invasive species more than native bees, they can cause bad trouble, like adding momentum to thistle problems. Oh, and by the way….honeybees carry diseases and parasites that can negatively affect native bees. For example, there is a virus that causes bumble bees to have deformed wings – honeybees carry it!

In the last few decades, Randall Morgan documented the diversity of bees in Santa Cruz County.

The Good Native Bees

Native bees are important for pollination, contributing to crop production for humans and food production for wildlife. Dr. Claire Kremen and others have shown that California farms that have a good amount of native bee habitat around them have better crop pollination. Native bees are also essential for pollinating native species of plants, which produce fruit that are important for wildlife. For instance, native bumblebees pollinate manzanita flowers, which produce fruit that is eaten by native foxes and many bird species. Likewise, native bees pollinate coffeeberry bushes that produce fruit eaten by lots of birds, including band tailed pigeons as well as foxes and coyotes. There are many other examples of the natural fruit that is wildlife food made possible by native pollinators.

What You Can Do

You can help conserve native pollinators by helping do the right thing with nonnative honeybees. The first thing to do is help spread the word about these issues. To learn more, read this publication by The Xerces Society for Invertebrate Conservation. That paper has good details about where it is, and isn’t, appropriate for raising honeybees. This caution caught my attention: don’t put hives within 4 miles of “habitats of special value for biodiversity and/or pollinators:” I suggest that this covers most of Santa Cruz County, which has special habitats full of rare pollinators throughout. The plethora of native bee habitats throughout our area would also suggest good potential for gardens and farms to be visited by enough native pollinators to perform enough pollination for the fruits we desire. Besides not placing more honeybees near native habitat, there are other things you can do.

If you know a beekeeper who wants bees, you might point them in the direction of harvesting bee swarms out of native areas and exporting them to urban or agricultural areas where they can do some good and avoid impacts to native pollinators. Also…read below about avoiding bug zappers and darkening night lighting. Finally, reducing or eliminating pesticide use is also important. One of the biggest threats to native bees (and honeybees!) is neonic pesticides; to learn more and write a letter to California’s decision makers, see this Natural Resources Defense Council webpage.

Bug Zappers

I’ve recently heard about people in our area using ‘bug zappers’ that attract insects to ultraviolet light and then electrocute them with a grid of electrified screen. Anyone buying one of these devices has been scammed: they do not work against biting insects. Instead, they kill a broad range of native insects that might have otherwise performed pollination, controlled pests, or fed birds. On top of that, the owner destroys their own nighttime peace with obnoxious electrocution noise and light. Oh…and speaking of light-

Night Lighting is Bad

Turn off outdoor lighting! Darken your windows. Anything you can do to make for a darker nighttime world will help conserve native insects and pollinators. Find out more with the International Dark-Sky Association. Urge local decision makers to reduce light pollution.

-this post originally posted in Bruce Bratton’s online blog at BrattonOnline.com

Teach Your Children Well, Part 2

I received lots of great feedback from my column a couple of weeks ago, maybe in part because people resonate with the need for raising our children with love and respect for nature. When we see people damaging nature, we must redouble our efforts to make sure we avoid making new people like that – by reaching out to children, to teach them well. This made me wonder what are core lessons we need for children (and adults!) for being good to nature right here in Santa Cruz. I hope the following is a good start- please send me more ideas for a future, more in depth publication.

News: Apocalypse Cancelled

The most damaging words I hear regularly about nature is how we are doomed. Even generally well meaning and educated people I know enter into what I call the apocalyptic mindset. You’ve probably heard it…maybe even participated in such a dialogue. It starts with, for example, how can we ever address global warming…its such a huge lift…governments aren’t doing anything…oil companies have too much power…people are greedy…the planet is going to be uninhabitable…the human race is going to disappear. This type of conversation seems to always end with ‘the human race is going to disappear,’ sometimes due to disease, sometimes nuclear war, and now sometimes global warming. Maybe we avoid this story with children, saving it for adult conversation, but if you entertain such notions at all, you can bet the children catch on. This story is magical thinking, and the rationale for such stories is beyond my expertise (but, please: ask yourself “why?” if you hear such things). Humans have survived very hard times – through plagues, terrible wars…through ice ages, famines, massive volcanoes, long droughts, etc: it is a safe bet that there will be people around for a very long time…long enough for us to tell a different story, so we think about a longer term presence and the need for earth stewardship.

A Better Story

The different story is supported by evidence near at hand. Go to Pinnacles National Park and watch a condor soar. Take a whale watching boat and see a blue whale. When you drive across Pacheco Pass or tour Pt. Reyes, see the tule elk. All of these species were ‘doomed’ but people decided that they were worth keeping…we changed our behavior, and they are recovering. The better story is of the inherent compassion of humans and our ability to improve how we live with nature. If your better story has people living alongside elk, whales, condors, and mountain lions in a world with grizzly and polar bears, elephants, giant pandas, and coral reefs, then it will inspire us to work together to make it so.

Stewarding Soil, Air, and Water

There are, of course, other things to teach the children, such as care for soil, water, and the air. The science of soil formation has been taking place on Santa Cruz’ North Coast for a while, so we are fortunate to be proximate to the story of soil, and how incredibly slowly it is created. The Dust Bowl lessons are long forgotten and chemical fertilizers have been hiding the need for soil, but all the same- soil is sacred and everyone should know that soil loss is a terrible thing, that prime agricultural land is precious to conserve, that soil needs stewardship. All children should know where their food comes from. The same goes for water; I wonder how many appreciate where their water comes from and the care that must be taken so that it isn’t contaminated…thanks to government and rules. And, it is similar for the air. That we have good soil, water, and air are again testaments to the good that humans can do when we work together. But, we can all use some education about what we can do to help keep those situations improving.

For the soil, water and air lessons, here are some field trip ideas. Next winter, go for a walk at Wilder Ranch and see if the soil is covered or if it is washing off into the ocean. Take a trip to Loch Lomond then to an auto repair shop upstream in Ben Lomond; discuss the dangers of petroleum ending up in drinking water. Watch road runoff in ditches next winter and think about what that oily sheen means for water quality and how it might be captured. Stand next to a busy street and smell the air, talk about what is in tail pipe emissions and where that stuff goes and what it does. To have these kinds of conversations might take some homework- how many of us can have informed conversations about these simple and everyday situations? If children knew more about these things, would it help?

Non-Humans

Children should know about living well with non-human animals. Often, kids are introduced to domesticated animals…and too often they share their parents’ misconceptions about how best to care for and train those pets. Perhaps family time discussing well vetted videos about living with pets is in order. Meat eaters have an obligation to have some honest conversations about how livestock are raised and how they come to the plate. Field trips may be in order on that front. A little more on the wild side is the need for children to understand the host of issues from animals that aren’t domesticated that tag along with human civilization – termites, Argentine ants, roaches, stray cats, rats, mice, pigeons, starlings, etc. Just around the corner is another teaching subject: native wild animals which are doing perhaps too well at adapting to human ecosystems, such as ravens, crows, gulls, jays, racoons, etc. By learning about these and the invasive animals, perhaps children will learn to be more tidy and perhaps they’ll figure out other ways to mediate the impacts of these species. Into the real wild, children need to learn about the needs of wildlife – for habitat, landscape connectivity, peace, respect, and for the science needed to better plan for conservation.

Children Becoming Citizens

As age appropriate, children will one day be old enough to need education about how the above concepts enter the civic world. They will need to understand how land management agencies do or do not protect open space for wildlife. They will need to understand how clean air and water regulations are promulgated, incentivized, and enforced. And, it would be good to teach them how to critically think about the environmental issues they encounter and how to seek credible information to inform their thinking. Are these issues addressed in schools adequately? How else might we help children to understand these issues so that they are engaged citizens?

Engaging

Nature brings peace, so perhaps the most important lesson for children is how to experience nature. I see families taking talkative strolls with children, but few parents sitting quietly in nature with their young ones. With luck, children should be able to witness a bird building a nest and feeding its young. They should see tadpoles and then tadpoles with legs. We all feel delighted to see a fox or coyote pounce on prey. There’s a fascination to watching the dusky footed wood rat taking a huge mouthful of twigs to its 4’ wide stick home. There are salmon swimming upstream to spawn in nearby creeks during the early winter. Giant whales are lunging into schools of anchovies close to boats that leave every day from local harbors. None of these things are easy to see as chance encounters. Like all good education, it will take some work, but it is worth it.

The more time we spend with children sharing these types of lessons, the better the chance of future generations saying ‘we are sure glad that people figured out how to restore beavers!’ or ‘wow- look at that tule elk!’ Richer lives and a better planet require us collectively to raise children who are eco-literate. Please do your part, even if you aren’t a parent.

-this article appeared first in Bruce Bratton’s BrattonOnline.com weekly blog.

Iceplant

Succulent carpets sporting pale yellow, rich magenta, or light purple flowers blanket the bluffs and hang over the cliffs along the coast of California. Joining oleander and cotoneaster as historic roadside plants, ice plant has been dropped by public works landscapers for many good reasons. Several species of ice plants are quite invasive in parts of California, spreading 3’ a year, wiping out rich assemblages of native plants and changing wildlife communities.

Native Ice Plant??!

When my mentors taught me the native flora, they wanted me to recognize the difference between the ‘native’ and non-native ice plant species. However, the ‘native’ ice plant turned out not to be native, proven by a clever scientist who sleuthed for a pollen record in pond sediment from an ancient pond in Marina, California on the Monterey Bay. The trick is to find an old pond, drill into the sediment with a hollow tube, and pull out a long plug of mud: deeper muck is older. Scientists can reference ash layers from volcanoes in the sediment and use carbon dating of bits of organic matter to index the history in the sediment core. In that pond sediment, they discovered ice plant pollen beginning in the 1800’s and occurring steadily in the pond sediment ever since. That was the age of lots of Old World species’ arrival…a time when invasive grasses and herbs spread rapidly across the landscape. Some species spread faster than the invading people so that the first Old World botanists didn’t know whether something was native or not. How did ice plant get there?

South Africa: Iceplant Home

South Africa is home to many ice plant relatives. That Mediterranean region is a biodiversity hot spot for many interesting plants, including plants in the ice plant family. Many ice plant relatives have stunningly bright colors and thin, reflective petals. There might still be a patch of ice plant relatives in the South African collection at the UCSC Arboretum. When I worked there, I came across that patch on a sunny spring day and was mesmerized by the color, gazing at first one intensely bright color and then the next. Peeling my eyes away from those flowers, I was shocked to find a world of temporarily muted color (a world of gray!). Something in my eyes had been overloaded and it took a while to get normal colors back. Only a few of the South African ice plant relatives have become weedy in California- not to say that more won’t in the future, should they find their way via the nursery trade.

Limey!

Scurvy is a horrible disease of malnourishment caused by too little Vitamin C. Part of the ‘success’ of the Imperialist British Navy is due to the recognition of the need to pack limes on board ships, earning those sailors the name ‘limeys.’ Some sailors might have been better called ‘iceys’ but that term doesn’t appear in the history books. The term for ice plant seed pods was “Sea Fig,” and the fruit was packed aboard ships to combat scurvy the same way limes did.

Tasty Treats

Ice plant fruit is ripe when the pods are wrinkly and shriveled, having narrowed from their once plump shiny tautness just after the flower fades. If you try eating one too early, it is very disappointing. Wait a while and you get to enjoy sweet, tart, and salty fruit loop flavor. Like figs, ice plant seeds are on the inside of the fruit, suspended in a sticky, stretchy slightly slimy gelatinous goo- that’s the tasty stuff to harvest out of the pods. I am pretty picky about where to harvest the fruits because of what I’ve seen dogs do on ice plant carpets. The biggest flowering of ice plant is under way now, so you have to wait a while for the pods to ripen.

Rats!

Us bipeds aren’t the only ones who like the ice plant fruit- they are favored food for all sorts of small mammals. The moisture in the fruit might be attractive, but the protein-rich seeds are nutritious – so much so that all that food elevates small mammal populations above what might normally occur. Ground squirrel, rat, and rabbit numbers increase, and herds of these animals scurry into areas surrounding the ice plant patches and graze down native vegetation, making way for still more ice plant with seeds dispersed in the critters’ poop. Sit on some of the large cliff-erosion combating rock piles near West Cliff’s ice plant carpets some evening and watch the cracks between the rocks. You will probably get to see part of that ice-plant fed thriving rat population.

Salting the Earth

Feeding the ice plant gardening small animals is one way that the plant is clever, but there’s an even more genius method of invasion: salt. Ice plant is very salt tolerant. As it grows it concentrates salts in the soil under it, creating more saline conditions than much of the native ocean bluff flora can tolerate.

Biocontrol Story

As I mentioned above, there once was a fondness for ice plant for stabilizing soil along roads and railroads. Many older readers probably recall ice plant lined roads; CalTrans maintained at least 6,000 acres of ice plant in the 1970s. Native plant enthusiasts never really liked that ice plant landscaping, long recognizing the species’ invasibility, and so they rejoiced when an iceplant pest made it to the New World and started killing ice plant patches. The scale insect was taking a serious toll on highway and railroad plantings, and native plant conservationists were transporting sick ice plant to new areas to spread the pest. Others regarded the pest with disdain, and they ended up winning. Cal Trans funded and UC Berkeley launched a biological control program to fight the ice plant pest. UC researchers found a few species of wasps that controlled the scale insects and released those wasps in masses. The wasps established and now control the ice plant destroying pest.

Removing Iceplant

Don’t worry: ice plant is controllable! Volunteers for the California Native Plant Society and other groups have embarked on ice plant pulling sprees to protect particularly rich areas of dunes and ocean bluffs. While the plants are quite heavy, they aren’t particularly well rooted, so are easy to yank. Pulled up parts of the plants are piled high and slowly decompose. You have to keep coming back to make sure some of the piled plants don’t re-root, but that follow up work isn’t very hard. And, one typically finds a few plants that were so small they got missed the first time pulling in an area. Ice plant is easy to recognize, so you might get to know it and pull it when it is out of place. Turn a pulled plant upside down, roots in the air, and it will probably die. After a while, the bare patches left from pulling ice plant might grow native plants. Often, old patches of ice plant leave behind a thick carpet of dead leaves and salty soil that takes some time to get back to something that can support native plant species. Hopefully, this essay will help prevent more people from planting ice plant in new places!

-post originally published at Bruce Bratton’s online weekly.