I've been in this weekend field class for the past five weeks, and this weekend is my last weekend. Each weekend, we've done at least one field problem (and usually two). On Friday night, we meet with a faculty member or senior grad student, and we develop a research question that we can adequately answer with one day of work (some questions are better than others). Then, we go out and do the work on Saturday. Saturday night, we repeat the process with a new faculty member and do the project on Sunday. The next weekend, someone from the group presents results and turns in a paper.
Last weekend, instead of working with a faculty member on Sunday, we worked on our own. For my independent project, I wanted to look at the differences in salamander species abundance on north versus south facing slopes. For those not well-versed in ecology, there is a marked difference between north and south facing slopes. South facing slopes tend to get more sun exposure, so they are often drier and warmer. I seem to remember that trees there grow faster. Conversely, north facing slopes are cooler and moister.
In speaking with people in my lab, I realized that the salamander question would be difficult to answer. Therefore, I decided to look at leaf litter amount and moisture, and I also looked at the invertebrate community in the leaf litter.
I haven't analyzed my results yet, so I don't have anything to report (but I'll try and let people know what I've found). Right now, I'm reading a bit in order to write my introduction and whatnot. What I found strange was that no one in my department seemed to know much about this north/south facing slope difference; I find it strange because it was a commonly known fact in my undergraduate school (mostly, I think, because we used a data set about north and south facing slopes in one of our stats exercises).
Anyway, in doing research, I pulled out my ecology textbook to see if I really was right (even though plenty of published literature mentions it too). Lo and behold, there's even a section for slope: north and south facing in the index.
I flip to the section, and what do I find at the very end? "In contrast, terrestrial salamanders inhabit the cool, moist north-facing slopes (Spotile 1972)." Heck. If I had bothered to pull out my ecology book before I did my research, I would have found my answer and been able to look at something a bit more unknown.
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