As non-native species move across the landscape and hydrofracking and other human impacts increase in scope, it is becoming more critical than ever that we can quantify changes to community structure. In order to do that, however, we must first have baseline data on which species are initially present. These baseline data also have the benefit of facilitating speciesspecific research by identif...

Data collected on several occasions between 1983 and 1985 as part of a hydrologic monitoring program by the U.S. Geological Survey permit. preliminary estimation of the natural varability in the discharge characteristics of hydrothermal features in Lassen Volcanic National Park and the Lassen XGRA in northern California. The total rate of discharge of highchloride hot springs along Mill Creek a...

Denitrification was measured in hyporheic, parafluvial, and bank sediments of Sycamore Creek, Arizona, a nitrogen-limited Sonoran Desert stream. We used three variations of the acetylene block technique to estimate denitrification rates, and compared these estimates to rates of nitrate production through nitrification. Subsurface sediments of Sycamore Creek are typically well-oxygenated, relati...

A 16S rRNA-targeted oligonucleotide probe specific for the iron (Fe3+)- and manganese (Mn4+)-reducing bacterium Shewanella putrefaciens was constructed and tested in both laboratory- and field-based hybridization experiments. The radioactively labeled probe was used to detect S. putrefaciens in field samples collected from the water column and sediments of Oneida Lake in New York and its major ...

This is a study of the impact of cyanide from mining waste on riparian communities, primarily vegetation, near Whitewood Creek, downstream from Homestake Gold Mine in Lead, South Dakota. Cyanide is used in gold processing, and the effluent, until fairly recently, was discharged directly into Gold Run Creek which empties into Whitewood Creek. Vegetation, soil, and water were collected from four ...

Variation in the effectiveness of biocontrol agents on the weed Parthenium hysterophorus L. was evaluated at two properties (Mount Panorama and Plain Creek) in Queensland, Australia for four years (1996-2000) using a pesticide exclusion experiment. At Mount Panorama, higher levels of defoliation by the leaf-feeding beetle Zygogramma bicolorata Pallister and galling by the moth Epiblema strenuan...