Topic Results: Biodiversity

Back to Currated List of Topics

Rewilding the American West

In general, rewilding aims to reestablish vital ecological processes that can involve removing troublesome nonnative species and restoring key native species. Our rewilding call is grounded in ecological science and is necessary regardless of changing political winds. Our objective is to follow up on President Biden’s vision to conserve, connect, and restore by identifying a large reserve network in the American West suitable for rewilding two keystone species, the gray wolf (Canis lupus) and the North American beaver (Castor canadensis).

Beaver: The North American freshwater climate action plan

Rivers and streams, when fully connected to their floodplains, are naturally resilient systems that are increasingly part of the conversation on nature-based climate solutions. Reconnecting waterways to their floodplains improves water quality and quantity, supports biodiversity and sensitive species conservation, increases flood, drought and fire resiliency, and bolsters carbon sequestration. But, while the importance of river restoration is clear, beaver-based restorationfor example, strategic coexistence, relocation, and mimicryremains an underutilized strategy despite ample data demonstrating its efficacy. Climate-driven disturbances are actively pushing streams into increasingly degraded states, and the window of opportunity for restoration will not stay open forever. Therefore, now is the perfect time to apply the science of beaver-based low-tech process-based stream restoration to support building climate resilience across the landscape. Not every stream will be a good candidate for beaver-based restoration, but we have the tools to know which ones are. Let us use them.

Tundra Be Dammed: Beaver Colonization of the Arctic

For this article, the researchers examined sites with evidence of new beaver pond colonization in the Arctic. Snowmelt is occurring, which is reducing permafrost and creating ideal habitat conditions for beavers. Beaver populations are now in competition with native ptarmigans. Tape et. al. suggest that beaver ranges are expanding rapidly in the Alaskan arctic.

Restoring wetland biodiversity using research: Whole-community facilitation by beaver as framework

Wetlands are declining worldwide, and there is a great need for their restoration and creation. One natural agent of wetland engineering is beavers. The study was conducted in Finland to address facilitation of waterbird communities by between beaver activity. The article also evaluates how the results of the study have been used in management.

Beavers: the original engineers of Britain’s fresh waters

While Britain has had a slower start than some mainland European countries, beaver reintroduction is now gathering traction motivated by prospects of habitat enhancement, natural flood management and wider biodiversity benefits.

Tags:

Are beavers a solution to the freshwater biodiversity crisis?

To determine whether reintroduced beavers, as an example of native herbivorous megafauna, can increase freshwater biodiversity at the landscape scale and to compare effects on two contrasting taxonomic groups.

Tags: |

Mobility of Settlements and Elements of the Biological Signaling Field of Beavers (Castor fiber) in the Basin of the Tadenka River (Prioksko-Terrasny Nature Reserve)

A study that suggests a high density of the biological signaling field is a sign of possible depletion of food resources, and can explain how beavers can have such a large range.

Effect of Agriculture and Presence of American Beaver Castor canadensis on Winter Biodiversity of Mammals

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.

Tags: |

Habitat engineering by beaver benefits aquatic biodiversity and ecosystem processes in agricultural streams

Dam building by beaver in degraded environments can improve physical and biological diversity
when viewed at a scale encompassing both modified and unmodified habitats.

The Beaver Facilitates Species Richness and Abundance of Terrestrial and Semi-Aquatic Mammals

Research article that used camera trapping and snow track surveying to investigate the facilitation of a mammalian community by the ecosystem engineering of the American beaver in a boreal setting.

Tags:

Persistence at Distributional Edges: Columbia Spotted Frog Habitat in the Arid Great Basin, USA

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.

Species Profile: Great Blue Heron

Short overview of the Great Blue Heron with a brief description of their reliance on beaver.

Tags:

The Impacts of Beavers Castor spp. on Biodiversity and the Ecological Basis for their Reintroduction to Scotland, UK

A review that investigates the mechanisms by which beavers act as ecosystem engineers, and then discusses the possible impacts of beavers on the biodiversity of Scotland.

Influence of Beaver Dam Density on Riparian Areas and Riparian Birds in Shrubsteppe of Wyoming

Study that examines relationships between dam density, riparian area characteristics, and the riparian bird community in a semiarid landscape.

Reintroduction of Beavers Castor Fiber may Improve Habitat Quality for Vespertilionid Bats Foraging in Small River Valleys

Study conducted on small streams in forest areas of northern Poland to determine whether beaver ponds may improve habitat quality for bats

Aerial Multispectral Videography for Vegetation Mapping and Assessment of Beaver Distribution within Selected Riparian Areas of the Lake Tahoe Basin

Multispectral videography was used in this thesis to classify 10 streams in the Tahoe Basin and to determine how beaver dams affected their nearby vegetation.

Tags:

Invertebrates in Beaver-Created Wetlands and Ponds

A study into invertebrates in beaver wetlands in the different regions of North America

A Critical Review of the Effects of Beavers Upon Fish and Fish Stocks

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

Final ESA Recovery Plan for Oregon Coast Coho Salmon (Oncorhynchus kisutch) 2016

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.