A selection of ELR's expertise
From a single reach to entire stream networks, ELR has the tools and approaches necessary to optimize how resources are invested in recovery and restoration planning efforts.
Select watershed assessment publications from ELR
A Geomorphic Assessment to Inform Strategic Stream Restoration Planning in the Middle Fork John Day Watershed, Oregon, USA
Stream Tools and Models
In collaboration with others (see Riverscapes Consortium), we have develop a host of GIS and stand-alone tools and models to help with watershed assessments, planning, restoration design, and change detection from reaches to networks.
These tools use publicly available data in GIS to efficiently delineated valley bottoms (Gilbert et al. 2016), riparian condition (Macfarlane et al. 2016, Macfarlane et al. 2018), stream primary production (Saunders et al. 2018), stream temperatures (Mcnyset et al. 2015), and beaver dam capacity (Macfarlane et al. 2016) across entire stream networks.
ELR was one of the lead developers in the Columbia River Habitat Monitoring Program (CHaMP 2011) where we used the latest in surveying technology to create a protocol to describe stream topography (Bangen et al. 2014) and other important characteristics. This 3D topographic data set can be used to describe very detailed geomorphic, hydraulic and fish habitat characteristics. Geomorphic units (Wheaton et al. 2015) and geomorphic changes (Wheaton et al. 2009, Bangen et al. 2016) can be delineated and followed through time (e.g. pre- and post-restoration). With discharge, topography can be used to efficiently run 1, 2, 2.5, and 3 D hydraulic models (Nahorniak et al. 2019), providing the basis for fish habitat models.
Whether you need to know the size of a population, track movement, or estimate management impacts, ELR has developed an assortment of tools that can be applied to your fisheries research or monitoring questions? From trophic studies to survival analyses, ELR has you covered. Have a specific need for a new PIT-tag antenna, ELR can also build custom PIT-tag detection solutions for your research project.
Select fish assessment publications from ELR
An Assessment of the Geographic Closure Assumption in Mark-Recapture Abundance Estimates of Anadromous Steelhead Populations. North American Journal of Fisheries Management 37(5) · June 2017
Linking Models Across Scales to Assess the Viability and Restoration Potential of a Threatened Population of Steelhead (Oncorhynchus mykiss) in the Middle Fork John Day River, Oregon, USA Ecological Modeling 355 · July 2017
Estimation of Salmonid Habitat Growth Potential Through Measurements of Invertebrate Food Abundance and Temperature. Canadian Journal of Fisheries and Aquatic Sciences 71(8) · August 2014