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Keyword: stream temperature

Differential sensitivity of stream temperatures to climate variability

Documents and Media Posted on: December 03, 2014
Estimating the thermal response of streams to a warming climate is important for prioritizing fish conservation efforts. While many estimates of air temperature responses to climate change exist, the sensitivity of streams to warming temperatures is less well understood.Document Type: Briefing Papers

Sensitivity of summer stream temperatures to climate variability in the Pacific Northwest

Publications Posted on: May 06, 2014
Estimating the thermal response of streams to a warming climate is important for prioritizing native fish conservation efforts. While there are plentiful estimates of air temperature responses to climate change, the sensitivity of streams, particularly small headwater streams, to warming temperatures is less well understood.

A simple protocol using underwater epoxy to install annual temperature monitoring sites in rivers and streams

Publications Posted on: September 05, 2013
Thermal regimes in rivers and streams are fundamental determinants of biological processes and are often monitored for regulatory compliance. Here, we describe a simple technique for establishing annual monitoring sites that uses underwater epoxy to attach miniature sensors to large rocks and cement bridge supports, which then serve as protective anchors.

Stream isotherm shifts from climate change and implications for distributions of ectothermic organisms

Publications Posted on: January 31, 2013
Stream ecosystems are especially vulnerable to climate warming because most aquatic organisms are ectothermic and live in dendritic networks that are easily fragmented. Many bioclimatic models predict significant range contractions in stream biotas, but subsequent biological assessments have rarely been done to determine the accuracy of these predictions.

Stream temperature monitoring and modeling: Recent advances and new tools for managers

Publications Posted on: August 31, 2011
Stream thermal regimes are important within regulatory contexts, strongly affect the functioning of aquatic ecosystems, and are a primary determinant of habitat suitability for many sensitive species. The diverse landscapes and topographies inherent to National Forests and Grasslands create mosaics of stream thermal conditions that are intermingled with strong gradients from headwaters to lowlands.

An evaluation of underwater epoxies to permanently install temperature sensors in mountain streams

Publications Posted on: March 23, 2011
Stream temperature regimes are of fundamental importance in understanding the patterns and processes in aquatic ecosystems, and inexpensive digital sensors provide accurate and repeated measurements of temperature. Most temperature measurements in mountain streams are made only during summer months because of logistical constraints associated with stream access and concerns that large annual floods will destroy sensor installations.

Effects of climate change and wildfire on stream temperatures and salmonid thermal habitat in a mountain river network

Publications Posted on: July 07, 2010
Mountain streams provide important habitats for many species, but their faunas are especially vulnerable to climate change because of ectothermic physiologies and movements that are constrained to linear networks that are easily fragmented.

Hydrogeologic controls on summer stream temperatures in the McKenzie River basin, Oregon

Publications Posted on: July 07, 2009
Stream temperature is a complex function of energy inputs including solar radiation and latent and sensible heat transfer. In streams where groundwater inputs are significant, energy input through advection can also be an important control on stream temperature. For an individual stream reach, models of stream temperature can take advantage of direct measurement or estimation of these energy inputs for a given river channel environment.

Influences of wildfire and channel reorganization on spatial and temporal variation in stream temperature and the distribution of fish and amphibians

Publications Posted on: December 17, 2008
Wildfire can influence a variety of stream ecosystem properties. We studied stream temperatures in relation to wildfire in small streams in the Boise River Basin, located in central Idaho, USA.

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