This is a 3m resolution binary map representing areas within the Upper Gunnison Domain of the RMBL Spatial Data Platform.

This is a 1m resolution binary map representing areas within the Upper Gunnison Domain of the RMBL Spatial Data Platform.

The circannual cycle of MR is suggested as the driving force underlying the cycles of food consumption and Bm in marmots, which corresponds well with observed differences in above-ground activity between the two populations.

(1) Per-flower insect visitation rates on two plant species within Rocky Mountain subalpine meadows were measured using fluorescent powders and found to be positively correlated with local flower density, suggesting that insects concentrate their foraging in dense patches of flowers. (2) Visitation

It is hypothesized that the average rate of nectar production per flower for a population of plants is such than an individual plant which possesses this rate has maximum fitness (i.e., is optimal), and predictions concerning nectarProduction in scarlet gilia, a hummingbird pollinated plant are deve

The movements of hummingbirds between inflorescences of scarlet gilia exhibited the following patterns: Although the hummingbirds appeared to avoid moving to the previous inflorescence, no significant correlation was found between the directions of successive inter-inflorescence movements.

I examined the response of bumblebees to two kinds of spatial variation and two kinds of temporal variation in nectar levels. The spatial variation involved differences in reward value among plant species and differences in nectar availability among patches of flowers of a single species. The tempor

The larvae of Glaucopsyche lygdamus (Lepidoptera: Lycaenidae) secrete substances that attract ants. In two field sites in Colorado, tending ants protect caterpillars of G. lygdamus from attack by braconid and tachinid parasitoids. This protection may have been an important feature in the evolution o

Journal Article Effect of Keystone Mine Effluent on Colonization of Stream Benthos Get access Barbara L. Peckarsky, Barbara L. Peckarsky 2 Rocky Mountain Biological Laboratory, Crested Butte, Colorado 81224 2 Present address: Entomology Department, Cornell University, Ithaca, NY 14853. Search for ot

important in situ technique, a conclusive analysis of in situ data to determine the References density dependence of emigration and CORKUM, L. D. 1978.The influence of density and immigration of benthic stream inverte-behavioural type on the active entry of two mayfly species (Ephemeroptera) into th

Results of laboratory experiments suggest that a water‐soluble factor released into the environment by the predacious phantom midge larva Chaoborus americanus (Diptera: Chaoboridae) causes embryos of the waterflea Daphnia pulex Leydig 1860 emend. Richard 1896 (Crustacea: Cladocera) to develop into a