Pyramid Lake, Nevada Water Quality Study
A comprehensive water clarity model for Lake Tahoe - A tool for watershed management
Effect of road traffic on amphibian density
We studied the effect of traffic intensity on local abundance of anurans. We counted dead and live frogs and toads per km and estimated frog and toad local abundances using breeding chorus intensities on similar roads through similar habitats, but with different levels of traffic intensity. After correcting for effects of date, local habitat, time,...
The case of Putah Creek: Conflicting values complicate stream protection
Published in California Agriculture
Increasing human demands for water in California have led to a decline in the diversity and abundance of native aquatic organisms, including valuable salmon and steelhead. Declines worsen during drought years, a fact demonstrated in 1989 when lower Putah Creek dried out in the third year of the state\textquoterights most recent drought. That year, ...
Fish species of special concern in California
Comparative ecology of prickly sculpin, Cottus asper, and coastrange sculpin, C. aleuticus, in the Eel River, California...
Published in Environmental Biology of Fishes
We documented species\textquoteright distributions, size structure of populations, abundance in mainstem and tributary streams, habitat use, and diets of prickly sculpin, Cottus asper, and coastrange sculpin, C. aleuticus, in the Eel River drainage of California, to determine the processes allowing coexistence of these very similar fishes. We obser...
Allozyme Analysis of Delta Smelt, Hypomesus transpacificus and Longfin Smelt, Spirinchus thaleichthys in the Sacramento-...
Published in Copeia
Two species of smelt (Osmeridae), Hypomesus transpacificus and Spirinchus thaleichthys, found in the Sacramento-San Joaquin estuary recently have declined in abundance, and H. transpacificus has been threatened by the introduction of nonnative Hypomesus nipponensis. We conducted an allozyme analysis of five species of smelt found in California to d...
Effect of major flow diversion on sediment nutrient release in a stratified reservoir
Published in Marine and Freshwater Research
Gold mining impacts on food chain mercury in northwestern Sierra Nevada streams. Division of Environmental Studies
Long-term change in Lake Tahoe (California-Nevada, U.S.A.) and its relation to atmospheric deposition of algal nutrients...
Published in Archiv für Hydrobiologie
