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
Statewide Fish Management Policy comments
Steve Glazer. May 21, 1997.
A short study of selected feeding behaviors in <i>Ambystoma tigrinum</i>
Observational study on the tricopteran larvae (Family Limnephilidae) with special reference to distribution among habitats
Life history patterns of Ambystoma tigrinum in montane Colorado
A survey of approximately 60 ponds in the Gunnison Basin, Gunnison and Pitkin counties, Colorado, U.S.A., showed a cor- relation between the thermal ranges of the ponds and the life history pattern of Ambystoma tigrinum populations. Characterization of physical and biotic parameters allowed a rankin
Some factors influencing size of Diaptomus shoshone
Growth rates and size at metamorphosis of high elevation populations of Ambystoma tigrinum
The claim that temperature, rather than food abundance, determines the alternative life history sequences followed by high elevation populations of A. tigrinum is substantiated.
Trout predation and the size composition of stream drift
Nocturnal drift of stream invertebrates is examined as a predator avoidance adaptation via the hypothesis that those taxa or growth stages which are large, and thus subject to intense predation relative to smaller forms, should be most strongly constrained to nocturnal drift activity. Smaller taxa o
Diet of brook trout (Salvelinus fontinalis Mitchill) and brown trout (Salmo trutta L.) in an alpine stream
Life history phenomena of <i>Ambystoma tigrinum</i> in montane Colorado
The food habits of stoneflies (Plecoptera) in the upper Gunnison River, Colorado
Gut contents of 1,463 stonefly nymphs, comprising 10 species, from the Gunnison River, Colorado, were analyzed from Dec., 1974–Oct., 1975, in relation to food availability. Pteronarcella badia fed primarily on detritus and moss. Perlidae and Perlodidae mature nymphs were all carnivorous, but showed
Resource overlap between co-occurring copepods: effects of predation and environmental variability
Permeability of trout erythrocytes to nonelectrolytes
Using a densimeter technique, a kinetic analysis was made, employing both entrance and exit studies, of the permeability of erythrocytes of brook trout (Salvelinus fontinalis), rainbow trout (Salmo gairdneri), German brown trout (Salmo trutta) and cutthroat trout (Salmo clarki) to glycerol, ethylene
Respiratory responses to hypoxia by <i>Ambystoma tigrinum</i> larvae, paedomorphs, and metamorphosed adults
Zooplankton: specific distribution and food abundance
Distribution of caddisfly larvae at varying densities
Colacium libellae sp. nov. (Euglenophycea): a photosynthetic inhabitant of the larval damselfly rectum
Behavioral thermoregulation in high altitude tiger salamanders, Ambystoma tigrinum
The distribution and habitat separation of three corixids (Hemiptera: Heteroptera) in western Colorado
SummaryThree species of Corixidae (Hemiptera : Heteroptera) were studied in thirty montane, sub‐alpine, and alpine ponds in Western Colorado. Callicorixa audeni Hung, had the widest altitudinal range (2800‐3400 m). Cenocorixa bifida Hung, was most common in montane ponds. Arctocorisa lawsoni Hung, w