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Keyword: streams

The aquatic eDNAtlas project

Science Spotlights Posted on: August 18, 2020
Because of its advantages relative to traditional sampling techniques, environmental DNA (eDNA) sampling is being rapidly adopted to address questions about the distribution of species in streams across the United States. The eDNAtlas provides occurrence information for over 50 species from more than 12,000 samples and assists organizations in collecting more samples for specific areas and species. 

Erosional processes on forest roads and flow duration characteristics of the Horse Creek streams

Publications Posted on: July 08, 2020
Present concern for the potential impacts land use activities can have on the water resource has prompted an increased interest in evaluating the effects of forest management practices on Water yield and quality.

Thermal regimes of perennial rivers and streams in the western United States

Publications Posted on: July 08, 2020
Thermal regimes of rivers and streams profoundly affect aquatic ecosystems, but are poorly described and classified in many areas due to the limited availability of annual datasets from extensive and representative monitoring networks.

Vegetation patterns and abundances of amphibians and small mammals along small streams in a northwestern California watershed

Publications Posted on: June 22, 2020
Our goal was to describe and evaluate patterns of association between stream size and abundances of amphibians and small mammals in a northwestern California watershed. We sampled populations at 42 stream sites and eight upland sites within a 100- watershed in 1995 and 1996. Stream reaches sampled ranged from poorly defined channels that rarely flowed to 10-m-wide channels with perennial flow.

A geomorphic perspective on things to think about before starting a gravel augmentation project

Publications Posted on: March 04, 2020
Gravel augmentation for the purpose of spawning habitat improvement has been carried out episodically by various government agencies since the 1960’s, and renewed interest in gravel augmentation was generated during the relicensing of numerous hydroelectric projects in the 1990’s.

Soils and physical conditions of Manitou Experimental Forest

Publications Posted on: February 19, 2020
A survey was made of the soils and the physical conditions of the Manitou Experimental Forest during the summers of 1946, 1947, and 1948. The survey was made as a basis for (1) selection of sites for future experiments, (2) interpretation of results for experiments already in progress, and (3) obtaining a detailed knowledge of the soils of an area representative of the Pike National Forest and much of the Colorado Front Range.

Evaluating the factors responsible for post-fire water quality response in forests of the western USA

Publications Posted on: September 26, 2019
Wildfires commonly increase nutrient, carbon, sediment and metal inputs to streams, yet the factors responsible for the type, magnitude and duration of water quality effects are poorly understood. Prior work by the current authors found increased nitrogen, phosphorus and cation exports were common the first 5 post-fire years from a synthesis of 159 wildfires across the western United States.

Redistribution of pyrogenic carbon from hillslopes to stream corridors following a large montane wildfire

Publications Posted on: January 30, 2017
Pyrogenic carbon (PyC) constitutes a significant fraction of organic carbon in most soils. However, PyC soil stocks are generally smaller than what is expected from estimates of PyC produced from fire and decomposition losses, implying that other processes cause PyC loss from soils. Surface erosion has been previously suggested as one such process.

An evaluation of multipass electrofishing for estimating the abundance of stream-dwelling salmonids

Publications Posted on: May 12, 2016
Failure to estimate capture efficiency, defined as the probability of capturing individual fish, can introduce a systematic error or bias into estimates of fish abundance.

Fish habitat conditions: using the Northern/Intermountain Regions' inventory procedures for detecting differences on two differently managed watersheds

Publications Posted on: May 12, 2016
Differences in fish habitat variables between two studied watersheds may be related to differences in land management. In using the R1/R4 Watershed-Scale Fish Habitat Inventory Process, for most habitat variables, evaluations of sample sizes of at least 30 habitat units were adequate.