It would seem so...Doug
Seems like we are the only two left at the bar talking about this.
One problem with regressions is that they assume linear relationships. While possibly true for small perturbations, many of the relations are nonlinear. For instance, a species cannot have a negative population.Yes trophic effects are hard to tease out. The species interplay is very dynamic and is loaded with confounding variables. One can spend years doing a study, might answer the orignal question but will produce ten more questions. During a masters course in ecology my prof had a hard time telling me that a regression with an R^2 value of 0.51 was significant. With my line of work anything less then .990 is a bad day. But I am not doing regressions.
Actually, Google found it. I just remembered the relation between wolves and aspen in some article that I read in the dim, dark past and searched away. I agree--it is a nice article.I love the article you posted. That study is very important and shed new light on hunter prey and trophic modeling. The results were than expected.
I'm not specifically aware of that work, but I am aware that species do a variety of things to minimize competition. (For instance, different species of mosquitoes work different "shifts" to share us humans (and other sources of fresh blood) better... )I am sure you are familiar with Macarthur's work on feeding warblers. Different species will feed in different zones on the same tree in order to curtail competion. The same thing happens with diurnal and nocturnal preditors.
non scientificly speaking, they are fun to watch. how many nasty biting bugs do you think each one eats in a day?
No, 42!82......
I read somewhere that flying uphill is a strategy used by some insects to find mating partners. Obviously, this strategy enables insects from a wide area to congregate in a small number of spots.Summits in summer are in general buggy. It frequently seems I don't need bug repellent until I reach the summit of where I'm going.
Riding my bike home from work on Tuesday, I rode through a flock (?) of them about 50' from my driveway.
Does anyone happen to know the collective noun for dragon flies?
Riding my bike home from work on Tuesday, I rode through a flock (?) of them about 50' from my driveway.
Does anyone happen to know the collective noun for dragon flies?
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