Images of a beaver dam over a four month period. Beaver dams block rivers and create ponds.
The beaver is a keystone species, increasing biodiversity in its territory through creation of ponds and wetlands.[1][2] As wetlands are formed and riparian habitats enlarged, aquatic plants colonize newly available watery habitat. Insect, invertebrate, fish, mammal, and bird diversities are also expanded.[3] Effects of beaver recolonization on native and non-native species in streams where they have been historically absent, particularly dryland streams, is not well-researched.[4]
^Wright, J.P.; Jones, C.G.; Flecker, A.S. (2002). "An ecosystem engineer, the beaver, increases species richness at the landscape scale". Oecologia. 132 (1): 96–101. Bibcode:2002Oecol.132...96W. doi:10.1007/s00442-002-0929-1. PMID 28547281. S2CID 5940275.
^"Beavers". Regeneration.org. Retrieved March 1, 2022.
^Rosell F; Bozser O; Collen P; Parker H (2005). "Ecological impact of beavers Castor fiber and Castor canadensis and their ability to modify ecosystems" (PDF). Mammal Review. 35 (3–4): 248–276. doi:10.1111/j.1365-2907.2005.00067.x. hdl:11250/2438080. Archived from the original (PDF) on March 4, 2012. Retrieved March 1, 2010.
^Polly P. Gibson; Julian D. Olden (2014). "Ecology, management, and conservation implications of North American beaver (Castor canadensis) in dryland streams". Aquatic Conservation: Marine and Freshwater Ecosystems. 24 (3): 391–409. Bibcode:2014ACMFE..24..391G. doi:10.1002/aqc.2432. S2CID 7062322.
and 27 Related for: Environmental impacts of beavers information
associated with beaver activity. Beavers may benefit birds frequenting their ponds in several additional ways. Removal of some pondside trees by beavers increases...
large streams with deep enough water, beavers may not build dams, and live in bank burrows and lodges. Beavers start construction by diverting the stream...
failed to establish, the introduction ofbeavers into the region has had far-reaching consequences. North American beavers have no natural predators in the...
Beavers (genus Castor) are large, semiaquatic rodents of the Northern Hemisphere. There are two existing species: the North American beaver (Castor canadensis)...
American beaver is one of the official national wildlife of Canada symbols and is the official state mammal of Oregon and New York. North American beavers are...
cost to ratepayers, the environmentalimpacts, and the loss of sacred archeological, burial and sites, as well as the impacts on Treaty rights. We have...
catchment areas. As of 2019, Switzerland had an estimated 3,500 beavers (a sharp increase from 1,600 beavers in 2008), with permanent beaver presence along...
beginning of the 20th century, only about 1,200 Eurasian beavers were left in this area, surviving in eight relict populations in Europe and Asia. Beavers are...
dozen beavers, which were very tame." Recent novel physical evidence ofbeaver's historic presence in the Sierra Nevada was the discovery ofbeaver dams...
The exploitation of these resources has stirred debates regarding economic development, energy security, and environmentalimpacts, particularly emissions...
available from which beavers can gather mud. Scent mounding is highest during intergroup interactions, vicinity of abutting beaver populations, and gestation...
species (such as beavers) can be beneficial for flood control reasons. Beavers build and maintain beaver dams which will reduce the height of flood waves moving...
species have become a serious economic, social, and environmental threat worldwide. Invasion of long-established ecosystems by organisms is a natural...
is the match of a species to a specific environmental condition. It describes how an organism or population responds to the distribution of resources and...
in the modern environmental movement. The government appointed a Committee on Air Pollution chaired by the civil engineer Sir Hugh Beaver to investigate...
can also be mistaken for a small beaver, as beavers and nutria have very similar anatomies and habitats. However, beavers' tails are flat and paddle-like...
years. Beaver Lodge Lake proved to be unsuitable for the beavers, as a summer drought had resulted in the water becoming stagnant and the risk of the lake...
tourism accounts for c. 8% of global greenhouse-gas emissions. Emissions as well as other significant environmental and social impacts are not always beneficial...
salmon. Beavers also function as ecosystem engineers; in the process of tree-cutting and damming, beavers alter the local ecosystems extensively. Beaver ponds...
areas, which protected beavers from having their food sources encroached upon. The removal of wolves had a direct effect on beaver populations, as their...
ofbeavers in the ecosystem has substantial effects on the local watershed because the existence ofbeaver dams "even[s] out the seasonal pulses of runoff;...
coincided with the completion of the dam, to make the reservoir a dramatic example of unanticipated environmentalimpacts. The Corps' website states in...
Affairs supplemental environmentalimpact statement (SEIS) stated that the original proposals, would not cause "significant impacts to most resources along...
Contact (23 October 2015). "Agronomic and environmental studies of potato (Solanum tuberosum L.) and analysis of its value chain in Zimbabwe". WUR. Archived...
households with hook-ups to municipal water systems, and conduct an environmentalimpact study on the area." FirstEnergy is required to clean up the site...
cottonwood, and willow, are important to beaver's diets and should be encouraged to grow in areas near beavers. Predators may be required to ensure that...
Environmental flows describe the quantity, timing, and quality of water flows required to sustain freshwater and estuarine ecosystems and the human livelihoods...
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