Beaver Library

I. Schlosser performed a long-term study to analyze changes to species density, fish predation, and precipitation over time in beaver ponds and their associated streams. In addition to an experiment that looked at the effects of these temporal changes on invertebrates. Yearly, there were significant variations in the amount of precipitation. The researcher suggests that dispersal is a significant factor in determining fish density and diversity, as well as effects of their predation on invertebrates.

European beaver dams impeded movements of anadromous salmonids as it was established by fishing survey, fish tagging and redd counts in two lowland streams in Lithuania.

A synthesis of scientific literature and our current level of: 1) understanding of the relationship between habitat quantity and quality and salmon production, 2) quantify the improvements in salmon production and survival that can be expected with different restoration actions, and 3) use models to help identify habitat factors limiting production and quantify population-level responses to restoration.

We have developed and implemented a simple approach that emulates the ecosystem engineering effects of beaver. This approach is less expensive and disruptive than typical large-scale engineering efforts and has the potential to restore both fish habitat and floodplain vegetation more rapidly than simply revegetating and waiting for the riparian zone to mature.  (Pg 246 – 255)

Whether beaver-induced changes of fish populations are beneficial or harmful will depend on the prevailing constraints on local fish species composition and abundance.

Researchers examined interactions between beaver and fish communities in the types of streams selected for Eurasian beaver re-colonization. They found several critical elements of fish communities in these mountain streams that relate to beaver activity and its effects.

A study of beaver control measures to help land management agencies weigh against large-scale removal programs

The goal of this project is to test whether a restoration method developed and tested in Bridge Creek, Oregon will be suitable for restoring streams like Pataha Creek in southeast Washington.

Relocating American beavers (Castor canadensis) from unwanted sites to desirable sites where damage exceeds stakeholder capacity) has been posited as a method to enhance in-stream habitat for salmonids in the Pacific Northwest.

Study that finds beaver-induced changes to habitat quality, stability, and connectivity may increase spotted frog population resistance and resilience to seasonal drought, grazing, non-native predators, and climate change.

Study of salmon and trout movement upstream and downstream of beaver dams, and how the dams effect them

Study of Coho Salmon rearing habitat in beaver ponds vs. non-beaver pools in Oregon

A review by the University of Southampton of how the reintroduction of beaver will affect fish in Scotalnd

Review of research about the positive and negative effects of beaver towards fish

An investigation into whether beaver dams impact the movement of trout

Article that investigates the relationship between beavers and coho salmon in the Mendenhall Recreational Area, Alaska

Manual of culvert design procedures for weak swimming fish

Large-scale experiment to quantify the benefits of beavers and beaver dam analogues to a fish population and its habitat

Study on how the increase of beavers along Sagehen Creek affect the trout in it

A study of trout in Montana and the habitats they choose