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Beaver Population Fluctuations and Tropospheric Methane Emissions in Boreal Wetlands
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Beaver Population Fluctuations and Tropospheric Methane Emissions in Boreal Wetlands

著者: Robert J Naiman; Thomas Manning; Carol A Johnston
版本/格式: 文章 文章 : 英语
刊登在:Biogeochemistry, Jan., 1991, vol. 12, no. 1, p. 1-15
数据库:JSTOR
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文件类型: 文章
所有的著者/提供者: Robert J Naiman; Thomas Manning; Carol A Johnston
ISSN:0168-2563
OCLC号码: 483392237
语言注释: English
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摘要:

Measurements of net methane flux were made during the 1988 ice-free season (May-October) at a beaver-meadow complex in northern Minnesota, USA. The site included upland boreal forest, sedge meadow, submerged aquatic plants, and the open water of a beaver pond. Annual fluxes were 8-11 g C/m<sup>2</sup> in the permanently wetted zones and 0.2-0.4 g C/m<sup>2</sup> at the occasionally inundated meadow and forest sites. These data, when coupled with long-term (46 yr) data on beaver (Castor canadensis) population size and habitat alteration, suggest that about 1% of the recent rise in atmospheric methane may be attributable to pond creation by beaver in North America.

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