Showing posts with label invasive species. Show all posts
Showing posts with label invasive species. Show all posts

Tuesday, November 24, 2009

Ghosting Trails

After our morning bird sit this week, we gathered in the yurt at Commonweal to debrief and pull out the stories from our morning sit. Before we even considered our markings on the maps, we got into a discussion about a deer seen near the bird sit meadow, and it's interesting behavior. It had pronked away from a downslope observer and stopped at a fence. Out of sight of it's first observer, though unknowingly observed by another person upslope, the deer crouched low and proceeded to trot with a gliding motion, keeping it's body low and even with the ground, along the fence line until it came to a low point, leapt over the fence, and glided away up a ravine. This behavior in the deer ("ghosting") dominated our conversation for two hours straight. We talked about deer gaits, beta-to-delta brain states, predation and hunting, blind spots and ruts in awareness, the wisdom of very old animals, and much more besides. Through it all the bird maps lay unused on the floor. We were all engrossed in our deer trailing conversation.

After our intensive ghosting dowload in the yurt, we got the chance to go out on the land again, in small hunting parties of Essentials, Native Eyes, and Cultural Mentoring students. My group began by following the morning's ghosting deer up it's ravine runs.



We followed easy and open trails until they became choked with brambles and poison oak, and then we crawled through on hands and knees. We found a cavern of willow, blackberry, and juncus that held fresh deer beds, buck rubs from this season, and a large woodrat nest. Which of those creatures left the above marks on the willow limb?



A short belly-crawl later, we found this deer-sized hidey hole under a coyotebrush, the surrounding juncus formed into a perfect deer body mold. Through the backdoor of the hidey hole, we squeezed and inched on our bellies through a tunnel of poison oak and up the steep slope. I wondered for a split second if we were in fact following mountain goats, not deer. But deer pellets and dainty, pointed tracks led the way through the dry coyotebrush and broom-clothed cliff.

The view from halfway up the deer trail was spectacular. We inched on, and as the path began to level out, I heard a rhythmic crashing in the brush ahead. I froze, and the crashing subsided into the distance, one burst at a time. A pronking deer?

Belly-crawling through the broom toward the origin of the sounds, I began to make out a small clearing inthe brush ahead. On my feet now at the edge of the clearing, pushing the brush back, my hand came back wet. I inspected the wet branch and found freshly nipped ends. Was the wetness saliva? Or plant sap? The browse was about two and a half feet off the ground. Could it be deer browse? Or what about rabbit, or mouse? Mice could climb the broom, and we've seen rodents browsing stranger things. I was excited by the possibility that it could be fresh browse from the deer I'd just pushed off of it's daybed.



We followed the trail in the direction of the pronking deer, but quickly lost our fresh trail. We came to a stand of live oaks. There my group was thoroughly distracted by the oaks' climbability.
















We spent the rest of the day tracking the other groups over the landscape by the patterns of bird alarms around them, and trying to stay unnoticed ourselves. We tracked four seperate groups by their concentric rings, and got visual confirmation of three of them. We ended the day by racing down the hill at high speed, following deer trails into the backdoor of Commonweal Garden.

Sunday, April 19, 2009

Tracking Day

We’ve been on a three-week break, during which I’ve been, if anything, busier than while class is in session. So it’s taken me this long to blog our last class. But here, at long last, it is!

We met at Venture this week. After romping with Mojo the dog and playing a morning round of T-Rex Frisbee (which is the most awesome game in the Universe) we set off for the lagoon near Pescadero.



We ambled down to the beach to check out the morning’s stories. These marks were all over the sand, crisscrossing each other in little trails and sometimes funneling into a big communal run. I love sand tracking.






We continued on, tried to stick our heads into an old beaver den but found it blocked by a botanical guard. Though many of us are nonreactive to poison oak, we still didn’t push our luck. We consoled ourselves by investigating this interesting mark and fairly fresh scat near the den area.



When we stopped for lunch we found these beautiful prints in the mud of the channel bank, still fairly close to the den area.



As we moved on, we kept on the look out for beavers or beaver sign. They continued to prove elusive, despite the fact that I’d brought my beaver-cut walking stick with me that day. We did get close to a wary, plain-looking turtle. He looked like he was enjoying the sun so we did our best to go quiet and slow and respect his space.



Finally we found our way up the hill to an open area full of grasses and wildflowers. The ground there was peppered with big holes and massive throw mounds. We spread out, looking for the freshest mounds.

On the way, I encountered this butterfly. I’ve never seen this type near my home, or in any other urban area.



Finally we found a fresh looking mound that lolled from the mouth of a very big (perhaps 9 inches across) hole. The mound showed deep lumbering tracks across its length. I took these photos while standing uphill from the hole, with the hole in the lower left corner and the mound extending up the photo, downhill from me.






These tracks raise a lot of questions: Are all of these from the same animal? How was the animal moving, to leave such a jumbled pattern? When was the animal last here? Was this a one-time or repeat use? Why was the animal in the area? Is it still here?

We still had further investigations to carry on elsewhere, so we dragged ourselves away from the tracks and the wildflowers, and moved on to the hypericum zone further south on the coast.

Once at the hypericum area, we all took Cybertrackers and dove in. Our last many attempts have been aborted for one reason or another, and as of this afternoon we hadn’t yet placed any hyperucum data points on our map. Our mission for the last hour or two of the afternoon was to catalogue whatever biodiversity we could. For reference, this is what the interior of the hypericum growth looks like:



Not very diverse. The hypericum is especially strange because one will push through and through the unending monotony of hypericum stalks, and then find, engulfed in the center, the skeleton of a long-dead tree or shrub, shaded out under the thick canopy. After such a find the hypericum seed capsule rattling that follows all of one’s movements often takes on an eerie sound.

But we did find some interesting things. I followed the edge and found a stand of poison hemlock, a plant that I’ve never seen wildlife use very extensively. In the middle of the stand were clipped stalks of hemlock, smoothly cut at an angle very much like a rodent’s or rabbit’s work.



I continued on into the hypericum, and found a woodrat nest uphill from a dead elderberry tree. The net was constructed almost entirely or elderberry sticks, with little hyperucum material. I wondered if the woodrat had such an aversion to hypericum that it would try to use hemlock in the absence of good elderberry or other more commonly used material. When I heard the rat skittering and rattling through the hemlock stand, it sounded to me like he moved with energy and health. But my ears are not well trained in woodrat skitters, so I could be wrong.

We returned, our cybertrackers finally full of good data for our maps.

Tuesday, January 13, 2009

Hypericum


Last Native Eyes we arrived at Venture early, ostensibly to meet others for a pregame hike, but no one else was there. We took the opportunity to start a fire early.

It had rained the night before. The firepit was a mud puddle, all the available wood was damp, and the kindling twigs I found on the brush pile were positively sodden. Still, we collected the driest materials we could. We gathered dry redwood needles from a sheltered redwood circle to line the bottom of the firepit. My classmate started to build a kindling tipi while I went to a dryer spot to spin up a coal on my bow drill.

I was most of the way through burning a new well into my hearthboard when my classmate walked by, sucking his finger. “Do you have a band-aid?” he asked. I told him where to find them in my pack and continued work on a coal.

Before I knew it, smoke was billowing from my kit and there sat a fat ember in the notch. I dropped it into my tinder bundle and walked it over to the fire circle. I found the circle empty except for the redwood needles we’d already put down. No tipi. Wet kindling. Damp wood. Hmm.

I blew the coal into flame, placed it in the fire circle, and began adding the smallest and driest of the kindling. Nothing would catch. I added more small bits, blew it into flame, then it sputtered and guttered and died. I added more small bits and blew until flames appeared, but now I was running out of small stuff. I tried adding the smallest of the firewood, bigger but dryer than the kindling, and blowing. Embers crept through the redwood needle platform, hollowing out the space under my not-quite-fire and oozing smoke as they went, but flames refused to come. I added the rest of my smallest twigs, and again blew the flames alive. They licked and blackened the log, but refused to stick. I kept blowing and added more midsized twigs, but the sizzle and sputter made it clear that if I stopped blowing, it would stop burning. Finally, out of breath, eyes burning from the smoke and dizzy from hyperventilation, I stopped. And the flames died. I stared at the ready embers, wondering how I could coax this waiting fire into life.

Then I remembered my tinder bag. I had a bagful of cattail fluff, dry mugwort, and dry bracken fern! I grabbed a handful and tucked it under the log, among the wisps of smoke, and blew. This time fire leapt enthusiastically, drying the twigs as it spread, and finally building to a healthy little blaze. Rejoicing in these self-sustained flames, I piled all the wet wood I could around the little fire to dry it before I had to use it. I did not feel like working against the water again. At last I sat back and breathed clean air.

Later I found out that my classmate had cut his finger severely, and had gone into mild shock while looking for my band-aids. Some of our instructors found him lying by his car on the cold, damp ground, sucking his finger. They helped him up, made sure he wasn’t bleeding to death, and got him a butterfly suture for his cut. I’m embarrassed to say that I had no idea he was in trouble until long after I’d finished making the fire.

The next morning we gathered in the main room. After kindling a fire, we spent the morning journaling. This particular method, called “Mind’s Eye journaling” utilizes field guides and personal experience to create a naturalist’s journal entry on a particular organism. Areas of focus include field marks, habitat, range map, dangers, and traditional uses, just to name a few. As an example, my journals at home include entries on Raccoon, Coast Live Oak, Poison Oak, Western Fence Lizard, Steller’s Jay, and other common organisms of my area, each of which includes sketches and text. You can find more information on this method in the Kamana program, which is where I learned the practice initially.

Our process this morning was to wander the grounds and find a tree with which we were unfamiliar. Then we were to memorize as much detail and whole impression as we could, come back to sketch our impressions, and finally find the tree in a field guide and make our journal entries.





I’m still not entirely sure what my tree was. It looks to me like a cypress but it doesn’t entirely fit the description of our local Monterrey Cypress, Cupressus macrocarpa.

After journaling, the Native Eyes crew set off for our local Hypericum patch. With Cybertrackers in hand, our mission was to catalog the signs of wildlife activity at the edges and in the middle of the Hypericum thickets. We dove into the thickets on our hands and knees, brushing past trailing blackberry vines, and weaving through the tall Hypericum stalks over a carpet of Oxalis sprouts. We found some predictable patterns of high edge activity and low thicket use, but some surprising signs as well.

In one area we found what look like chews or rubs on the Hypericum stalks. I’d been looking for this type of sign for a while, since the Hypericum groves look a lot like Scotch and French Broom thickets, both in the way the individual plant grows and it’s formation of monocultural thickets. In the East Bay Hills, broom thickets often harbor large populations of brush rabbits and the rabbits often strip the bark off the broom stalks to eat the inner bark. Bark stripping was, by comparison, markedly absent in the Hypericum, except for in one spot.



I also found an interesting little area of striking diversity in the sameness of the Hypericum sea. Granted the diversity was mostly invasive, but it was still refreshing. Just off the fire road, a clearing held Bull Thistle, Black Mustard, Poison Hemlock, a prickly-leaved yellow-flowered Composite of unknown species, Trailing Blackberry and a Juncus (the only two native plants that I could ID in the lot). I found the heterogeneity inviting after all that Hypericum so I poked further in. And I found something even more interesting.



A worn-in rabbit run caught my eye, so I bent down for a closer look. The Oxalis leaves had been nipped from their stalks all around the run. There was a cluster of soft rabbit pellets pressed flat in the middle of the run, still glistening wet, as if I’d interrupted an instance of lagomorphic coprophagy. Beside the pellets were two even more interesting little piles. One, of neatly-snipped fresh Hypericum leaves, the cut ends sharply angled. The other pile was of Hypericum seed capsules, the stalks again neatly snipped at an angle. The capsules had been opened from the side, and still spilled a few of their tiny seeds onto the ground.



We piled back into the cars as the sun set and headed back to Venture. Once there, I quartered the fox that I’d skinned and cleaned, rubbed the meat with salt and rosemary, and roasted it over the fire. It turned out delicious.



That night we had a potluck (at which I presented the fox meat) and a party. We played ridiculous and hilarious party games. My favorite was as follows:

The players are divided into two groups, one on each side of the room. They are given a time limit to disguise one of their number using any or all of the items of clothing found on their side of the room, while separated from each other by a sheet or other opaque divider. When the time is up, the sheet is dropped, and the disguised individuals face each other. The first team to guess the identity of the other’s disguised person gets a point.





Both teams and onlookers were in stitches by the end. I laughed so hard that my whole head hurt.