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ritaxis: (Default)
Saturday, April 28th, 2007 05:03 pm
part 0: getting ready -- in which I wibble a lot about write in the rain paper, which I didn't end up buying.
part 1: in which I am distracted by an amazing plant
part 2: methods. or, bioblitzing is hard

When I found out about the Blogger Bioblitz, I was immediately excited about the idea of going back to "my culvert," the storm drain at Woodrow Avenue and West Cliff Drive where I go to measure water quality on the (usually night) of the first measurable rainstorm each year. I've noticed some pretty interesting things there over the last couple of years. One thing is the road bridge that runs over the culvert: it's cracked in a jillion places and it looks like the first time a vehicle heavier than an SUV goes over it, it will fall into the sea.

The culvert is the end of a stream which cuts through the marine terrace that is West Side Santa Cruz. I think the headwaters are somewhere up behyond the Pogonip, but that the water runs underground for a lot of its journey, partly in culverts and partly in natural underground streams, of which we have a lot. We monitor it because it is a storm drain, which means it gets the rain runoff for the neighborhood, which is mostly medium-density residential and some "light" industry and commercial.

I think the land on the banks of the stream is managed by Santa Cruz Parks and Recreation. I think the iceplant that covers the banks must have been planted some years back. They don't seem to plant that stuff much anymore. It's one of those plants that nearly blankets the land, barely allowing anything to grow up through it. They used to plant iceplant all over the sides of the freeways, and now they seem to plant mostly native shrubs, with a few embarrassed plantings of oleander and grevillea here and there.

Like an old climax forest, though, the iceplant does let other plants grow in from time to time and place to place. Some plants are just so tough they find their way to sun and rain right through the branches of the iceplant. In other places, the iceplant has little clearings, dead zones through which other plants can grow. It sort of looks like the dead iceplant is at least relatively toxic, though, because it looks like the plants are growing on the edges of those clearings more than in the middles of them.

I am not sure that there are any indigenous plants in that streambed. Probably the willow. Maybe one or both of the asteraceae (one of which I think is genus Lactuca -- lettuce). Possibly the plantain and/or the geranium. The cypress, probably not. It's from near here, but not here (the natural range is limited to the Monterey area, just as the natural range of the Santa Cruz cypress is limited to the mountains). Maybe the watercress: but a tour through Jepson doesn't give me any way to casually determine exactly which watercress this is.

By the way, I've been told by someone who ought to know that watercress doesn't pick up much in the way of toxins from growing in these places. So I eat it sometimes. But not from the middle of the storm drain: from the rocks at the cliff, instead.

I expected to see more animals than I did. Some spiders, maybe, ants, bees. I did see one bee on the way out, but I was done listing things by then and I did not list it. I wondered if I would encounter any tree frogs, and I did hear at least two conversing.

More later.
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Thursday, April 26th, 2007 10:23 pm
So I went over to my culvert on Sunday. The first thing I realized was how horribly underprepared I was. This environmental biology thing is hard.

The area I had chosen was too large. I wanted to observe the life in the ditch from the edge of the bridge back to the bend in the stream where the huge plants are.(Monterey cypress, pampas grass, and what turns out to be gunnera tinctoria) This is an area about two-thirds the size of the lot my house is on. I also quickly figured out that I had no easy way of determining number of individuals of plants, since most of the plants in the creekbed are of the groundcover sort. So for all of those I figured out how much land they covered.

I needed, but did not have, a measuring tape and a decent magnifying glass. I did have the wit to find an aerial photograph of the place and make a sketch map from it. I guess the picture was taken a while back, because the path of the stream is not identical. I had to adjust that on the map.

I ended up choosing a couple of different places and counting individuals in them, but I'm not at all confident that I got those right. I haven't sat down with Jepson to identify the hard stuff (the grasses and the yellow-flowered asteraceae, notably). I will before the end of Saturday.

I'm pretty confident that with the possible exception of the yellow-flowered asteraceae and the algae in the streambed, there are no native plants growing in that drainage ditch. I think. It also seemed strangely bereft of animal life. I heard two different frogs, and I saw a segmented worm-like invertebrate and a bee-like thing going around the iceplant flowers, a water snail, a tiny fly and a tinier fly. The soil was damp, despite the fact that we got less than 10% of the "normal" rainfall this year.

To bed: more tomorrow.
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Sunday, April 22nd, 2007 10:28 pm
Well, I did go out to my favorite culvert for two hours and let me tell you, this biology gig is hard. I'll be blogging properly about it later in the week, but first I want to share with you the most amazing thing there:

I really don't know what it is. Do you?


These pictures don't express the enormity of the thing. Each mature leaf is as long as I am tall.





The flower spathes are much bigger than they look here, even in the picture with my hand. They are as long as my arm.





The plant has been there for years, steadily getting bigger. I just don't know what it is or where it came from. I'm tempted to call it alien, but it has terrestrial written all over it: every aspect of the thing, except its size, is quite "normal."
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Sunday, April 22nd, 2007 09:44 am
It's been sprinkling and sometimes raining off and on since Thursday. The interesting thing about that is that a lot of people around here think the rainy season ends around March 31st. I know better, because I have been noticing the weather on April 18 since 1979, and I can tell you that it rains on that day more often than not (there was at least a ten-year run where it rained on that day every time, which tells me that the day is quite comfortably within the season). This year it didn't, but it rained the next day.

Anyway, unless it's actually pouring buckets by the time I get myself together, the rain won't stop me. After all, I've sampled water there in the middle of the night in a heavy rainstorm before.

I need to find my camera, and I may actually go buy some write-in-the-rain paper. I think I will.

I'm still having a great deal of trouble with my arm. I think it's actually getting worse overall, and I think it was before I started this job -- I think ever since I started physical therapy, though it's hard to say because some things are getting better (strength, range of motion, plosture) while the pain and burning are getting worse. One thing that's definitely worse is that I can't lie down for more than two hours before I can't ignore the pain. So I guess I have to go back to the doctor and get a referral to someone who deals with necks. Will it be the same doctors Emma had for her lower back?

Phenological observations: my ceanothus has set fruit. It looks like half the foxtails (wild barley) in Lighthouse Field has turned yellow.