wildfire

Fire Time

With the rain and cool weather, for many reasons….it is fire time. How do we weigh the balance between the benefits of burning wood for heat and wildland fuel reduction with the drawbacks of indoor and outdoor air pollution and atmospheric carbon additions/global warming?  This moment in this season is a good time to enter that reflective space.

A burn pile being tended

Thinking Ahead

February is historically the wettest time of year on California’s central coast. The most rain falls in February, and the days are still short and the air is cool, keeping the environment moist between rainstorms. In just a handful of months, it will be dry and hot and fire weather will return. Anyone with responsibility to manage any vegetation must regularly plan for fire. Fire storms now march right into towns and so the smallest yard keepers have to think about the flammability of their situation. Why wait until the fiery weather is upon us? Cool days make for excellent outdoor working weather, and the wet environment opens up all sorts of opportunities for biomass processing.

Our Cultural Controls on Pile Burning

The native peoples burned dry natural vegetation, and so must we. With the rains and surrounding vegetation so moist, it has been an excellent time to do ‘pile burning.’ The CZU CAL FIRE unit, which oversees Santa Cruz and San Mateo County, started allowing rural residents to burn dry piles of vegetation starting last November 11, but how long that permission will last depends on the weather. CAL FIRE says, “Dry, natural vegetation, grown on the property may be burned outdoors in open piles unless prohibited by local ordinances.”  But first you have to apply for a CAL FIRE permit using an online system; and then you can only burn on a day that the Air Resources Board says is okay – when the smoke won’t be too much of a health hazard. You’ll need to do another permit application from them using, again, an online system. Interestingly, while CAL FIRE allowed burns a few weeks earlier, the Air Board burn season is December 1 – April 30.

Burning Assistance

This past December, and maybe again in the future, the Central Coast Prescribed Burn Association hosted workshops teaching “the foundational concepts of safe pile burning.” They offer this online resource for more guidance.

What About Composting Woody Debris for Fire Safety?

There is an understandable uprising against burning given concerns about climate change. Many people are suggesting composting biomass instead of burning it.

If you are in town, you can meter out your green waste bins by pruning out any dead or overgrown plants, a little at a time …. week by week. If you live out in the countryside and have to deal with a lot of woody biomass, you haul it to the dump or think of other solutions. How the dump manages to dispose of that much composted biomass is a conundrum.

There are permaculture folks and other Hügelkultur practitioners who suggest burying woody material beneath agricultural or horticultural beds, taking advantage of rotting wood for soil carbon benefits including increased water retention. This is a lot of work so it is applicable for only small amounts of woody debris in specific situations. Others suggest burying biomass to reduce erosion in downcutting drainages. My limited experience suggests caution with this approach as any wood that appears out of the soil will probably ignite during wildfire, burning and cooking the soil in the drainage. I share the same experience and caution for Hügelkultur: bury it well and hope it rots fast (you’ll need to keep it moist)!

What About Chipping?

With diesel or gas-guzzling chipping machines, it is questionable whether chipping is any better than burning biomass for atmospheric carbon impacts. There is also a concern about the wood chips catching fire in wildfires. One person I know had a nice pile of chips slowly disappearing into their grassy yard soil until someone built a warming fire on top of them…which ignited a few days later into a large conflagration that was difficult to extinguish. Best to bury chips, too – but not so easy to do! The same cautions apply for the practice of mastication- those big machines that chip vegetation ‘in place.’ Masticated material lying in carpets across the ground are less dangerous, but they still carry wildfire. And so, let’s turn back to the burning option.

Burning in Santa Cruz

The CZU Lightning Complex Fire burned 85,000 acres….mostly incompletely. That’s the region’s biggest, most obvious UH-OH! If you look at most of that acreage, you will see thousands and thousands of dead trees, which are slowly falling and creating a giant fire hazard. Do you recall the Creek Fire pyrocumulonimbus cloud and extreme fire behavior, including tornadoes of flames? That fire and other fires in the Sierra Nevada were greatly exacerbated by large numbers of trees killed by drought and beetles. We are facing the same danger in the footprint of the CZU Lightning Complex Fire. State Parks and other landowners have been using pile burning to reduce fuels to mitigate such a catastrophe, but a lot more needs to happen: the ‘treated landscape’ is much smaller than the untreated areas at this time. Still, I know of more than 500 burn piles having been ignited this season, so there is hope.

The CZU Lightning Complex Fire – Eating up vegetation a mile a minute on Wednesday August 19, 2020

Another method of burning involves using an ‘air curtain burner’ or a ‘carbonator.’ These both look like large metal shipping containers. Air curtain burners use high powered fans to contain sparks while logs get incinerated. Carbonators use more controlled air exchange so that they create ‘biochar’ – charcoal that can be used in agriculture or horticulture. Vineyards have been experimenting with biochar as a soil amendment that holds some promise for increased soil water retention. Horticulturally, biochar may substitute for carbon- and nature-unfriendly (mined) peat moss. We need to study biochar to see how long it retains carbon in the soil – long- or short term – to understand its potential for helping global warming by sequestering carbon.

Burning Wood: Carbon Neutral?

There is a movement afoot to reduce the use of wood for fuel, but to what end? In the San Lorenzo Valley and elsewhere, folks have long complained about air quality degradation due to badly managed wood heating apparatus. Unfortunately, folks use old wood fueled heaters and/or burn poor quality wood. As with burn piles, folks should be careful to burn only dry wood: there ought to be some rules for firewood sales to disclose percent moisture content in fire wood. Also, firewood needs to be stored so it doesn’t get wet after it is delivered to someone’s home. Wet firewood smokes a lot. Dry firewood burned in a modern woodstove, using smart fire building and maintenance methods can greatly reduce pollution while using a sustainable fuel source. The California Air Resources Board has a great website on cautions about, and helpful tips for, using wood for heating, and as an alternative suggests using electrical heaters.

Two thirds of California’s electricity comes from natural gas – fossil fuel! That figure is more hopeful in our region if you choose to get your power from Central Coast Community Energy, which is shooting for 60% renewable by 2025. Heating with wood is considered by many to be carbon neutral because the carbon that cycles from the atmosphere into plants, and then into wood fuel, isn’t fossil carbon but natural-cycling carbon. Plus, harvesting that woody carbon has the potential around here of being part of the solution to our current, catastrophic wildland fire fuel problem.

I hope you will carefully consider the right way to use wood for heat and take some time to manage fuels and vegetation where you can.

-this article originally posted by Bruce Bratton at his BrattonOnline.com weekly blog- get it automatically by subscription at his website…support local journalism and donate to Bruce- he could use your help!

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).

Chalks Chaparral

– this is another reprint from my post to Bruce Bratton’s most insightful brattononline.com weekly.

The Chalks stretches from above Año Nuevo into Big Basin south through the Lockheed property and then down many tiny ridges above Scott Creek and the Swanton community. Even before the CZU Fire, the ridges appeared from afar curiously white, like chalk. The earliest Old World explorers wrote in their log books about that striking whiteness. The barren white ridges are on account of extremely poor soil, mostly fractured rock. that limits the ability for vegetation to thrive. The vegetation that can make it is a unique type of chaparral.

Most people see The Chalks on their drive south on Highway One just north of Año Nuevo, South of Franklin Point as they pass the Coastanoa Resort. Look inland and you’ll see lots of broken ridges: those are The Chalks.

Much of The Chalks is on private property. Some is on what is known as “Lockheed Martin Space Systems” at the very end of Empire Grade. That area also contains a 1000-acre private property called “Lehi Park” a recreational and camping spot owned by the Church of Jesus Christ of Latter-day Saints. For public visitation, you’ll have to wait until Big Basin opens again…it’s still closed due to the last big fire. Meanwhile, you must settle for viewing from afar.

The Pines

At the top of the steep and erosive bluffs north of and above Waddell Creek, wind-blown, lichen strewn Monterey Pines form the chalks chaparral overstory, but their genes might make them something other than pure Monterey Pines. This is the home of one of only five native Monterey Pine stands. The others are on the Monterey Peninsula, around Cambria, and on two islands off of Baja – Cedros and Guadalupe. Monterey pines are the most planted forestry tree in the world, and the seeds of the ‘radiata pine’ created bred for those forestry plantings came from the Año Nuevo stand, where Monterey pine hybridizes with knobcone pine. Monterey pine occurs lower in elevation, and more deeply in frequent thick fog; Knobcone pine is found higher and hotter and dryer. In between, there are pines that look like both, and the globally planted forestry tree looks like one of those tweeners. As the birthplace of this confusing but useful forestry tree, The Chalks has its tree ambassador planted by the millions, all over the world. And yet, this tree isn’t the only famous bit of Chalks botany…there are also some world-famous manzanita species.

The Manzanitas

Chalks Chaparral includes 7 species of manzanitas, and there are two common, more widespread ones that dominate and two very rare species that only occur in this habitat. The most common species is brittle leaved manzanita, a widespread burl-forming species, and the subject of a previous essay. The other common species is the sensitive manzanita. Sensitive manzanita has small roundish shiny dark green leaves, making it look like the boxwood of the chaparral. Mixed in with these two species, there are two other manzanita species- two which exist nowhere else in the world: Ohlone manzanita and Schreiber’s manzanita. Each of these locally endemic manzanitas are very uncommon even in The Chalks and grow entirely on private property, so you can’t visit them outside of the UCSC Arboretum’s Conservation Garden. There might be as few as 100 Ohlone manzanita plants in the entire world!

You can, however, view photos of Shreiber’s manzanita from a 1939 expedition that led to its discovery. One photo archived by UC Berkeley shows a big manzanita surrounded by knobcone pines and chamise. Another photo has an overview of the habitat showing the large amount of bare ground with sparse manzanitas, pines and few oaks; that 1935 photo suggests a fire as recent as 14 years previously. The next fire was to be 8 years later in 1948.

You might be wondering about the other three manzanitas you can find on The Chalks. They are: Santa Cruz manzanita, silver leaf manzanita, and the crinite manzanita. On a rare California Native Plant Society field trip through the Lockheed property in the 1990s, we saw all 7 species within a short walk of one of our stops.

The Trails and Views

The best places to access The Chalks are in Big Basin State Park, now closed because of the CZU Lightning Complex Fire…but, put those trails on your list when it reopens. Whether from the coast or from inland, your destination are the ridges around Chalk Mountain. The trails wind on ridgelines with gorgeous views of the ocean overlooking Año Nuevo Island and a vast expanse of the ocean. On a clear day, you can see Point Reyes and the Farallon Islands to the north and Point Sur to the South.

Another place to aim for is Eagle Rock out of Little Basin. Eagle Rock is an isolated bit of sandstone on the eastern flank of The Chalks. The views from Eagle Rock expand eastward more than you might see from Chalk Mountain. The trail goes through a kind of chaparral closely allied to The Chalks, but with less rock showing than elsewhere.

Fires and Seeds

Both the 2009 and 2020 wildfires spread initially through The Chalks chaparral, same as the 1948 Pine Mountain fire. Those watching the 2009 fire said they saw what looked like fire tornados launching from one ridge and igniting the next ridge down wind. No one was watching for the more recent fire, which spread even more quickly. Both fires triggered fire-following seeds to germinate.

The most widespread and obvious fire following seedlings are bush poppies. Most of The Chalks will still be barren next summer (as before the fire), but patches of chest high blue-green bush poppy shrubs will be flowering with their bright yellow flowers next summer. I have tried everything to germinate those bush poppy seeds, including the recommended soak in white gasoline, presumably to break down its seed coat. But, after the fire…seedlings pop up all over.

The Chalks and the Rare Human Animal

Humans are rare in The Chalks. The Lockheed facility had, at its peak, hundreds of employees visiting this chaparral regularly, for work. But then much of it burned, and it is unclear if they will continue to operate the facility in the future. The Lehi property is also mostly ephemerally visited by people. The most common place to find humans in The Chalks had been out Last Chance Road where a culture all its own had homes sprinkled around patches of beautiful chaparral. That community, also, burned in the CZU Lightning Complex Fire.

Much of what we know about the natural history of places is gleaned by humans who make habits of visiting those places and looking carefully at what’s around them. Historically, few people have wandered into The Chalks with an eye to natural history. Shreiber’s 1930’s era Chalks visit mentioned above highlighted the area to natural history enthusiasts with the discovery of a new manzanita species (and those intriguing photographs!). Then there’s Jim West, a botanist extraordinaire endemic to the Swanton area, who has brought The Chalks to the attention of many other naturalists, in part because of his discovery of the other new manzanita species. His work has led to a kind of Chalks revival with a new focus on vegetation mapping bringing a host of new naturalists’ attention to that area. There is much more to be discovered in The Chalks – who will be the next person to find something amazing up there? Post fire recovery may have many surprises…

Brittle-leaved manzanita chaparral

– This is another of my posts from Bruce Bratton’s (highly recommended!) weekly at brattononline.com

The rains bring alive chaparral, so this is the beginning of a series featuring local types of “hard chaparral.” The term chaparral is confusing, so I use the term ‘hard chaparral’ to denote chaparral dominated by manzanitas, chamise, and ceanothus. Hard chaparral is so thick and dense and strong as to tear the clothes off of you if you are strong enough to try to walk through it. Rarely, you might crawl beneath the hard chaparral canopy. Nothing grows in the understory – there is only a light dusting of leaves – but you must squinch low while crawling…to 1 ½ feet… and wiggle down on the ground in tight spots; wearing a hat helps so that your hair doesn’t get caught and pulled out by manzanita’s stiff twigs.

Hard chaparral is different than ‘soft chaparral’ – also known as coastal scrub – which is dominated at first by coyote bush, then, later in life, poison oak, monkeyflower, and sagebrush. Soft chaparral generally grows on richer soils, closer to the coast. Hard chaparral grows on the poorest of soils, often with no discernable soil at all. Ridgelines and steep slopes mostly away from the immediate coast are home to hard chaparral.

In hard chaparral, along with the manzanitas you will find many other shrubs and an overstory of pines. Sometimes sparse, sometimes dense, knobcone pines are the more common pine, but there’s a Monterey pines overstory near Año Nuevo. Oaks and Douglas firs slowly invade brittle-leaved manzanita chaparral until you eventually get a few forlorn dying shrubs or even just old barely recognizable skeletons that tell you the chaparral is gone, for now (awaiting fire!).

Brittle-leaved Manzanita Chaparral

Brittle-leaved manzanita is the dominant species of most of Santa Cruz’ hard chaparral. Smooth maroon skin with sinewy muscle-like ripples down thick, strong stems – that’s what most people remember about brittle leaved manzanitas, but the flowers and burls also give them away.

If they aren’t already in bloom, they will be soon. They have clusters of pure white to pink jewel flowers – upside down urns with windows to capture and magnify light, so the flowers glow on even foggy-cloudy days. Bopping from one cluster of flowers to the next…hundreds of bumble bees delight in the winter nectar feast. Hummingbirds, too, zip around sipping from the flowers. On warm days in December and January, brittle leaved chaparral smells strongly of honey, a scent which enchantingly wafts far afield, down into the woody canyons below.

Burly Shrubbies

Of the nine taxa of manzanitas found in Santa Cruz County, brittle leaved manzanita (Arctostaphylos crustacea subspecies crustacea) is the most common and one of only two that have ‘basal burls’ or lignotubers. The other burly manzanita is a different subspecies of the same species (Arctostaphylos crustacea subspecies crinita), that is mostly found at the top of Ben Lomond Mountain, from the Bonny Doon Airport north to Lockheed. To see burls on these manzanitas, look at the base of the stems for a swelling, sometimes quite large, of lumpy wood. These are very easy to see after a fire, because that’s where these manzanitas sprout new shoots. That’s their magic: the ability to get hotly scorched, fire removing all of the branches, and still live. Up pop the shoots as soon as the rains come…and three years later, there’s a Big Shrub once again where the last one stood.

Locations and Co-Occurring Treats

The tops of our parks are great places to visit this type of chaparral. The top of Wilder Ranch State Park, in what used to be known as Gray Whale Ranch, and into upper UCSC, has patches of brittle leaved manzanita chaparral. The top of Nisene Marks State Park also has stands of this chaparral type. Other places include Mount Madonna County Park, as well as Big Basin and Castle Rock State Parks. From the edges of trails, a wintertime treat will also be Indian warrior, a bright maroon perennial wildflower which forms large mats. Shooting stars and various rein orchids also sprout trailside in clear patches of this type of chaparral.

Another thing about wintertime chaparral visits that is intriguing are the lichens, mosses, and liverworts that color and texture the chaparral. Liverworts, in this dry habitat?? Yes! Get off your bike and kneel at that bare-soiled edge adjacent to the chaparral…look carefully…and you’ll see liverworts (and hornworts!) hugging the ground in between mosses and ground-hugging lichens. The intrepid will get to see more and more species by counting the number of different types of tiny things in those patches, which are kept bare by the golden crowned sparrows who retreated when you came their way.

Critters

Sure, chaparral is for the birds, and that’s not a bad thing. And yet, it’s not just for birds. Wrentits are the quintessential shrub habitat bird, and I also like watching the large-curved billed California thrasher. Wrentits bop around below the canopy, mostly, but pop up out on a branch to make their subtle descending ping-pong ball bouncing song. California thrashers, also understory creepers, sometimes jet out onto a high point in a chaparral patch and sing their hearts out with operatic glory.

The San Francisco Dusky Footed Woodrat makes homes on the outer periphery of brittle leaved chaparral patches. It seems this packrat likes oaks and coffee berry more than manzanitas, but manzanitas keep coyote at bay, so having that habitat at their backs is a preferred location. Ratttlesnakes like wood rats…and the summer heat of chaparral…so, that’s a good snake species to associate with hard chaparral. Rats and rattlesnakes….?

What Good Is It?

Brittle-leaved chaparral is good for lots, but unfortunately it is getting destroyed very quickly nowadays. Nutrient poor soils lost their nutrients because they are well drained. Well drained soils are important for recharging the groundwater, keeping our streams flowing and drenching our thirst. Because this hard chaparral can thrive in nutrient poor soils, it is responsible for keeping those slopes from washing into the creeks and for keeping our groundwater infiltration areas infiltrating. Those sprouting burls…they send roots out on steep slopes after fire, preventing landslides and debris flows from destroying homes and roads.

Mowing It Down

Despite ostensibly being protected, brittle leaved manzanita chaparral is getting hacked up at an alarming rate. Now that fire has our attention, bulldozers are hard at work ripping up manzanita burls to make ‘fire safe’ areas. Crushers, masticators, and saws whittle away manzanitas as if they were enemies. When asked, County Planners have said that they have policies to protect this habitat type- they don’t allow development activities within it. The California Coastal Commission also ostensibly protects this type of ‘maritime chaparral’ as an endangered ecosystem, disallowing any destruction. And yet, even from Highway 1, you can see vast patches of chaparral being destroyed on the ridges above Watsonville. Parks organizations are mowing it down even on conservation lands to be doing ‘their part’ with fire safety. From Southern California, we have learned that treating chaparral this way isn’t a solution to wildfire: it generally grows up patches of weeds, which are even more flammable, less able to hold slopes in place, and no replacement for the habitat value of hard chaparral.

What I hope for is more people showing others how to live safely, and sustainably, alongside manzanita chaparral that is well cared for. If you know of any places, please let me know.