Search Results

NOAA study of beaver habitat effects on Coho salmon reproduction and growth in Washington state.

This recovery plan provides guidance to improve the viability of coho salmon to the point that it meets the delisting criteria and no longer requires ESA protection. It includes strong recommendations to increase the number of beaver and recommends the use of BDAs to restore rearing habitat for salmon.

A Finnish study of beaver wetland effects on dissolved carbon and oxygen.

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.

We compared beaver (Castor canadensis) foraging patterns on Fremont cottonwood saplings and the probability of saplings being cut on a 10 km reach of the flow-regulated Green River and a 8.6 km reach of the free-flowing Yampa River in northwestern Colorado.

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

In rural watersheds of southern New England with high Nitrogen loading, denitrification from beaver ponds may remove 5 to 45% of watershed nitrate Nitrogen loading. Beaver ponds represent a relatively new and substantial sink for watershed Nitrogen.

A comprehensive study evaluating how restoring beaver dams could significantly protect the city of Milwaukee from future flood vents and the significant cost savings of this nature-based management approach versus traditional flood prevention engineering.

This study found that prescribed fires negatively affected beaver lodge occupancy, an effect compounded with frequent burns. Though prescribed fire is considered an important landscape restoration process, the frequency of prescribed burning should be mitigated to ensure that flooding by beavers can continue as a key process that maintains wetlands on the landscape.

This article looked at castor canadensis in Chile and Argentina in the 1990s. Data found that beaver eradication strategies and ecosystem restoration efforts should focus on the ecology of native ecosystems rather than the biology of beaver.

This paper describes the social and ecological context for current beaver problems, how WFCDs function, gives installation and maintenance tips, and presents results of two surveys that assessed the effectiveness of WFCDs in alleviating beaver flooding problems in Connecticut and Massachusetts.

This study compared various measures of biodiversity levels of mammals in the winter months between wetlands on agricultural land and wetlands, as well as wetlands with active and inactive beaver colonies.

Study on how beaver dams affect coastal marshes and their Phosphorus and pH levels

A decision support and planning tool for beaver management, to analyze all perennial rivers and streams in Utah. This model assess the upper limits of riverscapes to support beaver dam-building activities.

Traditional restoration efforts are barely scratching the surface of what could be restored. Moreover, a disproportionate amount of funds are spent on too few miles of streams and rivers leaving millions of miles of degraded streams neglected. To fill this gap, restoration practitioners are increasingly trying restoration techniques that are more cost?effective, less intensive, and can more practically scale up to the enormous scope of degradation.

Beaver dams in tidal estuaries have significant benefits for multiple fish species.

This study demonstrated that beavers actively increase the volume-to-surface area ratio of wetlands by almost 50% and that their digging of foraging channels increases average wetland perimeters by over 575%. They concluded that exclusion or removal of beavers could limit ecosystem processes and resilience.

Biodiversity is declining in the UK, which is considered one of the most nature depleted parts of the world. The reestablishment of the Eurasian beaver (Castor fiber) has been posited as an effective means of facilitating a restoration of biodiversity in Britain, and following successful trials, nationwide reintroduction is being considered. This literature review considers the potential psychological benefits of such an initiative. Beavers could act as a ‘super restorer’, facilitating psychological as well as ecological restoration through a beneficial synergy of effects. Through their eco-engineering activities, beavers increase biodiversity at the landscape scale and facilitate habitat restoration and creation (creating a mosaic of green and blue space, and a sense of wilderness) all of which can increase the psychological well-being of visitors. Their creation of biodiverse natural settings offers the possibility of increased nature connectedness and nature-based psychological restoration amongst some of the human population of the UK. Beaver reintroduction may represent a partial antidote to ‘shifting baseline syndrome’ and beavers could act as a flagship species and become a totem of hope as eco-anxiety increases. Beavers can potentially have negative psychological impacts, and this will require appropriate planning, management and communication among stakeholders coupled with community-led initiatives to mitigate. Overall psychological benefits of beaver reintroduction likely exceed that of any other single species’ reintroduction or conservation initiative of equivalent cost, and far outweigh the costs of their reintroduction and management.

Summary of the beaver release at Knapdale, Argyll, for the purpose of running a scientifically monitored trial as part of the Species Action Framework (SAF).

A comprehensive compilation of information related to beavers and their management with an emphasis on stream restoration.