495 results — topic: Freshwater Ecology
Kinetics Data of Iron(II), Manganese(II), Dissolved Organic Carbon and Nitrate from Batch Incubation Experiments Using Hyporheic Sediments from the East River Watershed, Colorado.
Hyporheic zones act as critical ecological links between terrestrial and aquatic systems where redox-sensitive metals of iron (Fe) and manganese (Mn) significantly impact nutrient cycling and water quality. In order to understand the production, release and speciation of Fe(II) and Mn(II) in groundw
Finding of No Significant Impact Fish Passage at the Grand Valley Irrigation Company Diversion Dam on the Colorado River
US DOI Bureau of Reclamation Fish and Wildlife Service. 1997.
Density, size and clutch of two high altitude diaptomid copepods
Population characteristics of two copepod species, Diaptomus shoshone Forbes and Diaptomus coloradensis Marsh, and both interspecific and intraspecific interactions are examined. Both species vary in size among years and among several high altitude ponds in Colorado. Larger individuals with larger c
The effect of an influx of new species on the diversity of protozoan communities
Physiological ecology of a subalpine dragonfly nymph
Drought resistance in subalpine nymphs of Somatochlora semicircularis Selys (Odonata: Corduliidae)
Ruth L. Willey, Harold O. Eiler, Drought Resistance in Subalpine Nymphs of Somatochlora semicircularis Selys (Odonata: Corduliidae), The American Midland Naturalist, Vol. 87, No. 1 (Jan., 1972), pp. 215-221
Effects of size-selective predation and food competition on high altitude zooplankton communities
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
Undescribed genera and species of Harpellales (Trichomycetes) from the guts of aquatic insects
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
Mortality in a population of Daphnia rosea
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
A behavioral study of <i>Gerris gillettei</i>
Variations in the life history of tiger salamander (<i>Ambystoma tigrinum</i>) populations near Gothic, Colorado
Bottom fauna of Avery Creek
A study of diatom diversity in Avery Creek
The Structure and Function of Freshwater Microbial Communities
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