7,660 results ·
The meadow midst the aspens (<i>Populus tremuloides</i> Michaux.)
A study of diatom diversity in Avery Creek
Field study of the American water dipper <i>Cinclus mexicanus unicolor</i>
A study of the alpine willows <i>Salix nivalis</i> and <i>Salix artica</i>
The Structure and Function of Freshwater Microbial Communities
The behavioural ecology of desert grasshoppers. II. Communication in Trimerotropis agrestis
Cricket courtship and male-to-male signals which prevent ipse-sexual courtship are described and illustrated audiospectrographically in Trimerotropis agrestis gracewileyae Tinkham.
Barriers to gene flow in natural populations of grasshoppers. II. Maintenance of narrow hybrid-zones between morphs of Arphia conspersa on Black Mesa, Colorado
Blood group complexity: the Pm locus in Peromyscus maniculatus
The diet of Ambystoma tigrinum larvae from western Colorado
A. tigrinum larvae from two ponds in the Elk Mountains of western Colorado were found to eat a wide variety of foods, including a total of 42 classes, mostly of various littoral, benthic, and planktonic arthropods. Most common animals (between 0.5 and 20 mm in length) in these ponds were eaten in pr
The yellow-bellied marmot and the evolution of polygamy
We have elaborated a model describing the development of polygynous mating systems. The bases of the model are measures of fertility and survival of adult females and their offspring, respectively, as functions of increasing harem size. Our data indicate that an adult female makes her greatest contr