Two distinct communities exist in a series of small subalpine ponds on Galena Mountain, Colorado, at 3,400 m. In the deep ponds, two predators, the culicid larva Chaoborus and the axolotl Ambystoma tigrinum, coexist with two small herbivores, the copepod Diaptomus coloradensis and the cladoceran Dap

SUMMARYEight new species of the fungal order Harpellales from the United States are described, including three new monotypic genera (Genistellospora, Trichozygospora, and Simuliomyces). Three species are from black-fly larvae (Genistellospora homothallica, Simuliomyces microsporus, Pennella angustis

Unusual spring weather climaxed by a late June snowstorm in the subalpine area around Gothic, Gunnison County, Colorado, had a profound effect on the biota. Damage to herbaceous prennial plans was extensive and the size of insect and small mammal populations was depressed. The storm caused the extin

A Daphnia rosea population was observed over a 2—year period in order to compare mortality with natural predation pressure. A technique is presented for estimating the instantaneous death rate of Daphnia from population dynamics data as derived from quantitative, serial, plankton samples. The effect

In the course of nesting microclimatic studies of the Broad-tailed Hummingbird (Selusphorus platycercus), I observed three cases of intra-or interspecific piracy of nesting materials. These observations were made in the vicinity of the Rocky Mountain Biological Laboratory, Gothic, Gunnison County, C

Perennial legumes in Gunnison County, Colorado suffer heavy differential flower predation by larvae of a lycaenid butterfly, and seem in turn to be an important factor in the evolution and distribution of the various legume species.

Journal Article The Annual Cycle and Fat Storage in Two Populations of Golden-Mantled Ground Squirrels Get access Barbara Hibbs Blake Barbara Hibbs Blake Department of Biology, Yale University, New Haven, Connecticut Search for other works by this author on: Oxford Academic Google Scholar Journal of

Island in the Rockies: The History of Grand County, Colorado, to 1930 Get access Island in the Rockies: The History of Grand County, Colorado, to 1930. By Black Robert G.III. (Boulder, Colorado: Pruett Press, 1969. 435 p. Illustrations, maps, photographs, bibliography, index. $10.00.) Maxine Benson