March Visit (3/19/2019)

I had two goals on this visit to the Reserve: to conduct my usual observations and to finalize the locations where I planned to have my field sketching workshop participants stop for our six drawing exercises. I didn’t get to the Reserve until around noon, when everything had warmed up into the sixties. With the bright sun, there were butterflies absolutely everywhere! Plenty of wildflowers, too, including California pipevine (Aristolochia californica), which I had not managed to find in bloom in previous years.

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My Upcoming Lecture and Hike with Tuleyome

In March, as part of Tuleyome‘s Nature and You Events, I am pleased to be guiding a field sketching hike and separate evening lecture focused on Stebbins Cold Canyon.

On March 9, I will lead a field sketching workshop at Stebbins from 8:00 to noon, where I will offer demonstrations, exercises, individual exploration and discussion. These will be designed to help participants enjoy the reserve and practice taking our nature observations to a deeper level. More information is available here.

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On March 28, I will be presenting a lecture at the Mary L. Stephens, Davis Branch Library at 6:00 pm. The lecture will describe my ongoing project documenting Stebbins after the fire, showing in drawings the reserve’s response to the fire. I’ll be giving an overview of how I approach field sketching and talking in depth about the idea of using sketching to pay close attention to a place and its inhabitants and observe changes over time. More information is available here.

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January Visit (1/30/2019)

A winter visit to Stebbins at the end of January was the perfect time to look for lichen and other things less easy to spot in more abundant foliage. Curious about how quickly lichens have begun to colonize new substrate, I looked closely at one of the large rocks split open during the fire. A few lichens have begun to grow on the newly exposed faces of the rock, though not nearly as many as on the older outside faces of the same rock.

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Along the trail more lichen, sprouting California buckeyes (Aesculus californica), and flowering chaparral currant (Ribes malvaceum), California bay laurel (Umbellularia californica), and California toothwort (Cardamine californica). Lupines (Lupinus succulentus) and soap plants (Chlorogalum pomeridianum) have emerged, but are not yet flowering.

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More lichens, yellow fieldcap mushrooms (Bolbitius titubans), a water strider in the clear, rushing creek, and the background songs of wrentits (Chamaea fasciata) and Pacific treefrogs (Pseudacris regilla).

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On examining a pitcher sage (Lepechinia calycina) resprouting from its base, I noticed at least three different fungi at work on the dead, burned branches.

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Three ferns grow close together on a shaded hillside: wood fern (Dryopteris arguta), goldenback fern (Pentagramma triangularis), and California maidenhair fern (Adiantum jordanii).  I found a whiskered jelly lichen (Leptochidium albociliatum) on a moss-covered rock, and particularly liked its intricate structure, with black lobed thallus, reddish-brown apothecia, and white hairs underneath the lobes (hence “whiskered”).

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I always look for dried mule-ears leaves (Wyethia helenioides) in the winter, with the lack of canopy after the fire, these are often found in open areas where they catch the sunlight and glow.

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How is the Reserve Doing 3 Years After the Fire? (12.12.2018)

In December, I visited Stebbins along with two UC Davis Natural Reserves directors: Jeffrey Clary (Associate Director) and Sarah Oktay (Director of Strategic Engagement and Stebbins Cold Canyon Director).  They graciously agreed to walk some of the creek trail with me to tell me about how the fire response at the reserve has compared to expectations and answer the questions that I’ve had over the last few years of site visits.

Following are pages from my sketchbook outlining our discussion, written and illustrated after the fact.  At the end of this post, I’ve included the field notes I made during our walk.

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Text from page 1:

1. The fire follower whispering bells (Emmenanthe penduliflora) was out in large numbers after the fire and hadn’t been seen at the reserve since the last fire 30 years ago.

2. Seedlings of buckbrush (Ceanothus cuneatus) were only seen this last spring (2018), which was three springs after the fire.  It may be that they had reseeded/germinated earlier, but only just became noticeable.

3. Hairy-leaf ceanothus (C. oliganthus) should also be in the reserve.  It may be up in the high draws and less obvious.

4. It is unclear how the manzanitas in the reserve are doing – there has not been a lot of resprouting or reseeding (parry manzanita, Arctostaphylos parryana).

5. Red ribbons (Clarkia concinna) can be seen regularly in the reserve, but never before in the numbers in which it was present the two springs after the fire.  It is usually only up on the slopes and showed up both on the slopes and in the canyon after the fire.

6. The interior live oaks (Quercus wislizeni) in the canyon are doing pretty well with resprouting but it is not as clear how well the blue oaks (Q. douglasii) uphill are doing.  Blue oaks tend to grow on the hillsides and live oaks in the canyon – blue oaks have a higher tolerance for low water conditions than do live oaks.

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Text from page 2:

7. Many of the gray pines (Pinus sabiniana) were completely killed by the fire.  Gray pines are relatively intolerant to fire but return to the area easily in between fires.

8. American robins (Turdus migratorius) come in all at once and eat the berries off of the toyons (Heteromeles arbutifolia) over a couple of days.

9. Species composition in the reserve is back to about 80% of what it was before the fire.  The habitat structure is still very different, with much more understory and much less canopy.  Some cover has come back by now, though, and wildflowers were already much less numerous last spring than in the first two springs after the fire.

10. Chaparral currant (Ribes malvaceum) will be blooming soon.

11. The perennial vines in the reserve (wild cucumber – Marah fabaceus; western morning glory – Calystegia occidentalis; pipestem clematis – Clematis lasianthus) are less numerous in the mature community than they have been in the years right after the fire, when there has been abundant light and climbing support in the form of bare branches.

12. Yerba santa (Eriodictyon californicum) seeds germinate readily after fire and can also resprout after fire.

 

Here are the field notes I took while we walked (color added later):

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November Visit (11/23/2017)

On an overcast day that was comfortably cool, I tried to see as many different areas in the reserve as I could.  I headed up the trail towards Blue Ridge first and watched an oak titmouse (Baelophus inornatus) poking around in the dirt at the edge of the trail.  There were still bunches of nearly dry California cudweed (Pseudognaphalium californicum), along with the last blooms of coyote brush (Baccharis pilularis).

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Tuleyome and the Friends of Stebbins Cold Canyon Reserve have been continuing to stabilize the trail, shoring up the steep sections while the shrubs that ordinarily hold the hillsides in place are regrowing.

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The sky was filled with dramatic swaths of clouds, so I took a moment to capture the view back along Highway 128.

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Many of the toyons (Heteromeles arbutifolia) that started regrowing immediately after the fire did not produce flowers and berries until this year.

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In the overall grey of the day, the fall colors at the reserve stood out sharply:

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Because there had been a small amount of rainfall already this fall, the creekbed was damp and there were a few pools in places; enough moisture for mosses to have begun to rehydrate.  The view through the culverts that are now the official access route into the canyon is striking and I finally stopped to capture it on this visit.StreamAndCulvert_2017Nov23_sm

Here are a few shots of the sketches in progress:

July Visit (7/26/2017)

In the morning when the temperature was approaching 90 degrees F, a fairly short walk through the reserve revealed a number of plants I had not seen in previous visits, including green cudweed (Gnaphalium californicum) and narrow-leaved milkweed (Asclepias fascicularis), below.  I also observed galls on poison oak, which are made by a gall mite, Aculops rhois.

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California fuschia (Epilobium canum) is abundant in the reserve in the summer, but I saw a new Epilobium in the creekbed this visit, denseflower willowherb (Epilobium densiflorum).  The puffy, plume-like fruits of pipestem clematis (Clematis lasiantha) were abundant in several places along the creek trail.

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Thanks to the wetter winter, there was still water in the creekbed this July, and plenty of plants and animals taking advantage.  Red rock skimmers (Paltothemis lineatipes) buzzed me as I stood on rocks above the water, peering into the creek to see freshwater snails that are harder to spot when the water is higher.  I fished the head of a Jerusalem cricket (Stenopelmatus sp.) out of the water; I’m sure the rest of its body had been a juicy treat for something.

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May Visit (5/29/2017)

Meandering down the trail in May, stopping every few steps to draw something else, I tried to find differences between last May and this.  As I’d noticed before, there were more vines this year, including western morning glory (Calystegia occidentalis).  There were abundant pipevine swallowtails (Battus philenor) both years, and this visit I spotted a mating pair and was able to get close to sketch them.

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It seemed to me that there were many more Clarkias along the creek trail, including Clarkia unguiculata (elegant Clarkia) and Clarkia purpurea (four-spot).

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Bumblebees were busy in the Klamathweed (St. John’s wort, Hypericum perforatum) and I watched a Chalcedon checkerspot (Euphydryas chalcedona) on poison oak.  A few gray pines (Pinus sabiniana) that seemed to still be growing after the fire now have so few green needles left that it seems they may not make it after all.

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A couple of my usual views: Cold Creek and Blue Ridge.  I’ve been trying to capture them each time I visit, for an ongoing record of seasonal changes as well as changes over the years.

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I hadn’t yet spotted an alligator lizard (Elgaria multicarinata; I wrote an older synonym on the sketch) in the reserve, so I was glad to finally spy one darting across the trail in front of me.  They are zippy and more shy than fence lizards.

I started to draw the coyote mint (Monardella villosa) and then noticed a lady beetle (Coccinellidae) larva on one leaf.

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