Sunday, January 12, 2020

Antlers Aweigh!




I put four cams out in the same general area in late December to get a sense of which trails the animals were using. I'm not talking about hiking trails, but game trails, although a pair of intrepid off-trail hikers did flash a peace sign at one of the cams. 

I was surprised by how frequently the trails were used by presumably the same few deer. The SD cards recorded so many frames I thought for sure there would be a lot of wind-blown branches, or birds or squirrels, but it was almost all deer, and also several gray fox, with a few varied thrush, gray squirrels, and a tree-climbing mouse thrown in.

The buck above passed through on the afternoon of Jan. 9 while there was a bit of water on the lens. (BTW, this is Cam #2 as shown by the 0002 in the lower right of the info band). 

And the very next day...



...he was down one antler! I'm pretty sure it's the same buck. He's even passing by within a half-hour of the previous day's time: 1:48 p.m. vs. 1:18 p.m. 

I read that a buck's antlers will drop when their post-rut testosterone levels drop. 

This wasn't the only buck who lost a new year's antler...



...except this guy lost the antler on the other side of his head.



Here's the same guy being caught by Cam. #3 a couple minutes later. I believe this is the same buck that was caught, with his antlers still intact, in the shot below.




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Tuesday, December 31, 2019

Winter Wonderland




Thanks, Mt. Tam



I think in the last ten years I have never seen this kind of red coloration in acorns before. I believe the heart-shaped chunks were munched by a deer. I wish I knew what was up with the red color. Is it oxidized tannin? My old 1992 edition of Oaks of California (pre-sudden oak death; it's not mentioned once in the whole book) says indigenous people would remove the reddish papery skin when preparing acorn meal, so I guess it isn't that unusual, although I don't believe I came across any such skin the one time I processed acorns myself. Anyway, I was also interested to see that some of the acorns were beginning to sprout while they were still attached to the tree.



Acorn, Coast Live Oak (Quercus agrifolia)



Passing Cloud



Madrone Berry & White Feather



Half-Eaten Madrone Berry 

(I could hear a flock of band-tailed pigeons rustling around in the overstory). 

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Thank-you Mt. Tamalpais for a great decade of exploration, inspiration, and refuge.

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Soak Up The Sun



I was about to drive home when I spotted a clump of grass down the way that I was pretty sure hadn't been there before. It's nearly 2020 and my eyesight is 20/Crappy, so I spied the clump through 10X binoculars and resolved it into a Blacktailed Jackrabbit (Lepus californicus). Here the hare is soaking up the warm rays of a late-morning's winter sunshine along Bolinas Ridge. 



That's quite a tear in your fabulous listening appendage, my friend. I guess I'll wish you a Happy New Ear!

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Monday, December 30, 2019

Still Lifes With Christmasberry



Oak Leaf, Acorn Shell & Christmasberry



Shelf Fungus with Christmasberries, Lichen & Moss

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Sunday, December 29, 2019

Oyster Gills



I'd just set out four trail cameras in a new area when I lucked into a small flush of Oyster Mushrooms on a decaying, but still standing, oak trunk. As I photographed their gills I was impressed by how fresh and debris-free they looked. (Click on any image to view it larger.)



But when I got the images home and viewed them on my monitor I cursed the stray strand of miscellaneous nature fragment that I hadn't noticed in the field.



I thought it was a superfine monofilament of lichen until I zoomed in and saw that it was a dewy strand of spider silk.



I also failed to notice the fungus crawlies. I'm going to guess this is a mite since it appears to have six legs and something like palps, but I poked around Google and Google Scholar a little bit without finding another picture like this guy. How does such a tiny creature ever find its way to the gills of a mushroom?!



Pleurotus ostreatus

One thing I learned as I was poking around for information on the crawlies is that oyster mushrooms don't just feed on wood. They also parasitize, i.e., eat, nematodes. To paraphrase The Big Lebowski: Sometimes the nematode eats the fungus. Sometimes the fungus eats the nematode. 

Although some fungi use constricting loops of hyphae to trap nematodes, and others use adhesive hyphae, the oyster mushroom poisons its prey. As we read here

"When grown in a nitrogen-poor environment like wood, P. ostreatus will produce a toxin on aerial hyphae. Instead of diffusing into the environment, the toxin remains as a droplet on the hyphae. In this manner, the toxin remains undetected by the unfortunate nematode until contact is made; the nematode is promptly paralyzed by the toxin. Hyphae will then colonize the nematode, and eventually digest it."

[UPDATE]
Interesting story about this in the New York Times (Jan. 2023)

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Friday, December 27, 2019

Wednesday, December 25, 2019

Nature's Gifts


Click Image to View Larger

I like a well-ordered, even minimalist image as much as the next guy, but I also like the rumble-tumble of the bumble-scrumble—nature in all her random mathematical chaos. Especially when the image includes flowing water and rocks being colonized by moss.  



I also liked the jaggy emerald forest of the moss and ferns contrasted with the smooth softness of supple water and solid stone.



Back in the dry months I used to enjoy sitting as still as possible on these rocks where I'd face downstream into a spacious glade created by the high canopy of trees. There was a small pool of water that survived at the base of the dry rocks, and birds would land practically at my feet to drink and bathe. 


Click Image to View Larger

Once again I wasn't finding any large fleshy fungi, just little fellas like this weather-worn trio of (I believe) Mycena maculata. After taking a series of photos to be stitched into this single image later on, I reflected on the fact that the forest is my hunting ground, but the quarry is aesthetic sustenance. I get virtually all my food, clothing and shelter through our system of worldwide industrial trade, and I spend almost all my time in a man-made landscape. The aesthetic sustenance I get from my too-brief excursions into nature is much more substantial than simply acquiring a photograph.

Which reminds me that shinrin-yoku, or Japanese forest bathing, is having a moment. I even saw a book about it on the "new non-fiction" shelves at Green Apple the other day. It's hypothesized that the molecules floating in the forest atmosphere have a beneficial effect on us, and savvy marketers will gladly sell us a bottle of essential oils to bring some of forest bathing's benefits into our own home.

Shinrin-yoku is another "ecosystem service" provided freely by nature. Gifts such as clean air and fresh water literally make our lives possible, and our lives are degraded in proportion to how much we degrade those gifts.

Nature is the gift-giver par excellence, the substrate of everything we are and the original giver of life to our small blue planet, our twirling mote in the immensity of space. Nature says Merry Christmas to us every day. 

Here's hoping we learn, very soon, to take better care of what she gives us.



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Saturday, December 21, 2019

Solstice Sunrise


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You know you're spoiled rotten when you call a sunrise like this ... a dud! As I looked out the bedroom window this morning I could just make out the waning crescent moon, nearly half-way across the sky, shining dimly through a layer of cloud. I sensed that a colorful sunrise might not be in the cards, or in the clouds, but I was already out from under the covers, maybe twenty-seven-percent awake, and it was just after 6 a.m. Which meant I had about 20 minutes to get dressed, get my gear together, make some coffee, toast a bagel, and get going in time to reach the Mt. Tam gate when it would open at 7 a.m.

I decided to go for it, but I didn't have my hopes up. I was on the road by 6:23 and had great traffic karma all the way up, which made me a tad early. I was actually first in line at about 6:55, and by the time the slightly tardy ranger opened the gate a little past 7, there were four cars behind me. 

I'd seen a deep crimson bar on the horizon earlier which had gotten my hopes up a little bit, but instead of blossoming into a Mt. Tam Winter Wonder Spectacle of a sunrise, the color had likely faded even before the gate opened.

Nevertheless, I am lucky and blessed to have a place like this to enjoy on a Saturday morning. A pair of red-tailed hawks called to each other as they sewed flight lines across the sky, surfing the strong, chilly winds with nary a wingbeat. I needed a jacket as I started down the Cataract Trail, but I had to take it off soon after I entered the woods and got out of the wind. The creek was flowing clear and with authority, but not rushing. The day is short. I'll savor it while it lasts.

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