ARCTIC Effects of Beaver Dams on Subarctic Wetland Hydrology
ABSTRACT. Beaver dams are ubiquitous in subarctic wetlands, where runoff in the flat terrain is highly prone to changes as the stream courses are modified by beaver activities. Depending on the state of preservation, stream flow can overtop or funnel through gaps in the dams, leak from the bottom of...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.492.5545 2023-05-15T14:19:33+02:00 ARCTIC Effects of Beaver Dams on Subarctic Wetland Hydrology Ming-ko Woo James M. Waddington The Pennsylvania State University CiteSeerX Archives 1989 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.492.5545 http://pubs.aina.ucalgary.ca/arctic/Arctic43-3-223.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.492.5545 http://pubs.aina.ucalgary.ca/arctic/Arctic43-3-223.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/Arctic43-3-223.pdf text 1989 ftciteseerx 2016-08-14T00:04:58Z ABSTRACT. Beaver dams are ubiquitous in subarctic wetlands, where runoff in the flat terrain is highly prone to changes as the stream courses are modified by beaver activities. Depending on the state of preservation, stream flow can overtop or funnel through gaps in the dams, leak from the bottom of the dams or seep through the entire structure. Peak and low flows are regulated by these dams to a varying extent. The formation of beaver ponds causes local flooding, while the open water surfaces of the ponds increase water loss from the wetlands. Water spilled from the dams may cause diversion channels to produce complex drainage patterns. Comparing the water balance of basins with and without a beaver dam at its outlet confirms that the dammed basin lost more water to evaporation, suppressed the outflow and increased the basin water storage. Key words: beaver, wetland, beaver dam, stream flow, basin storage, wetland drainage, Subarctic RÉSUMÉ. On trouve des barrages edifies par les castors partout dans les terres humides subarctiques, là où I’dcoulement en terrain plat est trts souvent sujet à des changements, suite à la modification du lit des ruisseaux par la presence des castors. Selon l’etat des barrages, le cours d’eau peut passer par dessus o s’&happer par les interstices du barrage, passer en dessous ou filtrer A travers toute la surface. Jusqu’à un certain point, les barrages rtglent la hauteur du cours d’eau. La formation d’ktangs cr&s par les barrages de castors est la cause d’inondations locales, tandis que la plus grande surface d’eau en contact avec l’air augmente la perte d’eau dans les terres humides. L‘eau qui se deverse des barrages peut amener les chenaux de diversion à crker une configuration de drainage complexe. La comparaison des bilans d’eau contenue dans des bassins avec et sans barrage de castor à leur sortie, confirme le fait que le bassin avec barrage perd plus d’eau par evaporation Text Arctic Arctic Subarctic subarctique* Unknown Arctic Beaver Ponds ENVELOPE(-57.841,-57.841,49.642,49.642) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
ABSTRACT. Beaver dams are ubiquitous in subarctic wetlands, where runoff in the flat terrain is highly prone to changes as the stream courses are modified by beaver activities. Depending on the state of preservation, stream flow can overtop or funnel through gaps in the dams, leak from the bottom of the dams or seep through the entire structure. Peak and low flows are regulated by these dams to a varying extent. The formation of beaver ponds causes local flooding, while the open water surfaces of the ponds increase water loss from the wetlands. Water spilled from the dams may cause diversion channels to produce complex drainage patterns. Comparing the water balance of basins with and without a beaver dam at its outlet confirms that the dammed basin lost more water to evaporation, suppressed the outflow and increased the basin water storage. Key words: beaver, wetland, beaver dam, stream flow, basin storage, wetland drainage, Subarctic RÉSUMÉ. On trouve des barrages edifies par les castors partout dans les terres humides subarctiques, là où I’dcoulement en terrain plat est trts souvent sujet à des changements, suite à la modification du lit des ruisseaux par la presence des castors. Selon l’etat des barrages, le cours d’eau peut passer par dessus o s’&happer par les interstices du barrage, passer en dessous ou filtrer A travers toute la surface. Jusqu’à un certain point, les barrages rtglent la hauteur du cours d’eau. La formation d’ktangs cr&s par les barrages de castors est la cause d’inondations locales, tandis que la plus grande surface d’eau en contact avec l’air augmente la perte d’eau dans les terres humides. L‘eau qui se deverse des barrages peut amener les chenaux de diversion à crker une configuration de drainage complexe. La comparaison des bilans d’eau contenue dans des bassins avec et sans barrage de castor à leur sortie, confirme le fait que le bassin avec barrage perd plus d’eau par evaporation |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Ming-ko Woo James M. Waddington |
spellingShingle |
Ming-ko Woo James M. Waddington ARCTIC Effects of Beaver Dams on Subarctic Wetland Hydrology |
author_facet |
Ming-ko Woo James M. Waddington |
author_sort |
Ming-ko Woo |
title |
ARCTIC Effects of Beaver Dams on Subarctic Wetland Hydrology |
title_short |
ARCTIC Effects of Beaver Dams on Subarctic Wetland Hydrology |
title_full |
ARCTIC Effects of Beaver Dams on Subarctic Wetland Hydrology |
title_fullStr |
ARCTIC Effects of Beaver Dams on Subarctic Wetland Hydrology |
title_full_unstemmed |
ARCTIC Effects of Beaver Dams on Subarctic Wetland Hydrology |
title_sort |
arctic effects of beaver dams on subarctic wetland hydrology |
publishDate |
1989 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.492.5545 http://pubs.aina.ucalgary.ca/arctic/Arctic43-3-223.pdf |
long_lat |
ENVELOPE(-57.841,-57.841,49.642,49.642) |
geographic |
Arctic Beaver Ponds |
geographic_facet |
Arctic Beaver Ponds |
genre |
Arctic Arctic Subarctic subarctique* |
genre_facet |
Arctic Arctic Subarctic subarctique* |
op_source |
http://pubs.aina.ucalgary.ca/arctic/Arctic43-3-223.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.492.5545 http://pubs.aina.ucalgary.ca/arctic/Arctic43-3-223.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766291368641036288 |