Ecosystem Alteation of Boreal Forest Streams by Beaver (Castor Canadensis)

Ecology ◽  
1986 ◽  
Vol 67 (5) ◽  
pp. 1254-1269 ◽  
Author(s):  
Robert J. Naiman ◽  
Jerry M. Melillo ◽  
John E. Hobbie
Keyword(s):  
Boreal Forest ◽  
Castor Canadensis ◽  
Forest Streams

Alteration of carbon cycling by beaver: methane evasion rates from boreal forest streams and rivers

1988 ◽  
Vol 66 (2) ◽  
pp. 529-533 ◽  
Author(s):  
Tim E. Ford ◽  
Robert J. Naiman
Keyword(s):  
Boreal Forest ◽  
Castor Canadensis ◽  
Sediment Accumulation ◽  
Drainage Network ◽  
Beaver Ponds ◽  
Drainage Networks ◽  
Annual Carbon ◽  
Stream Size ◽  
Forest Streams ◽  
Forest Drainage

In boreal forest drainage networks, beaver (Castor canadensis) apparently influence the biogeochemical cycling of carbon by creating conditions for sediment accumulation in streams, providing anoxic conditions suitable for significant methanogenesis. To test this assumption we measured methane evasion rates in streams, ranging in size from first to sixth order, in the Matamek River drainage network, Quebec, Canada. Evasion rates varied between 0.04 and 4.41 g C (CH4)∙m−2∙year−1. There was no correlation between stream size or water temperature and evasion rate. However, methane evasion was 33-fold greater in beaver ponds than at other sites, representing 3.6% of the measured annual carbon output. In contrast, methane evasion accounted for only 0.05–0.5% of the annual carbon output from sites not modified by beaver.

Surveying biodiversity in protected and managed areas: Algae, macrophytes and macroinvertebrates in boreal forest streams

2009 ◽  
Vol 9 (6) ◽  
pp. 1179-1187 ◽  
Author(s):  
Jani Heino ◽  
Jari Ilmonen ◽  
Juho Kotanen ◽  
Heikki Mykrä ◽  
Lauri Paasivirta ◽  
...  
Keyword(s):  
Boreal Forest ◽  
Forest Streams

APPLIED ISSUES: Effects of habitat rehabilitation on brown trout (Salmo trutta) in boreal forest streams

2010 ◽  
Vol 55 (10) ◽  
pp. 2200-2214 ◽  
Author(s):  
T. VEHANEN ◽  
A. HUUSKO ◽  
A. MÄKI-PETÄYS ◽  
P. LOUHI ◽  
H. MYKRÄ ◽  
...  
Keyword(s):  
Boreal Forest ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Habitat Rehabilitation ◽  
Brown Trout Salmo Trutta ◽  
Forest Streams

scholarly journals Edge effects of wildfire and riparian buffers along boreal forest streams

2011 ◽  
Vol 49 (1) ◽  
pp. 192-201 ◽  
Author(s):  
Nicholas T. Braithwaite ◽  
Azim U. Mallik
Keyword(s):  
Boreal Forest ◽  
Edge Effects ◽  
Riparian Buffers ◽  
Forest Streams

Phosphorus and Glucose Uptake by Seston and Epilithon in Boreal Forest Streams

1989 ◽  
Vol 8 (2) ◽  
pp. 123-133 ◽  
Author(s):  
Karl E. Corning ◽  
Hamish C. Duthie ◽  
Brian J. Paul
Keyword(s):  
Boreal Forest ◽  
Glucose Uptake ◽  
Forest Streams

Importance of large woody debris for juvenile chinook salmon habitat in small boreal forest streams in the upper Yukon River basin, Canada

2004 ◽  
Vol 34 (9) ◽  
pp. 1955-1966 ◽  
Author(s):  
Brent Mossop ◽  
Michael J Bradford
Keyword(s):  
Boreal Forest ◽  
River Basin ◽  
Chinook Salmon ◽  
Woody Debris ◽  
Large Woody Debris ◽  
Juvenile Chinook Salmon ◽  
Yukon River ◽  
Yukon River Basin ◽  
Juvenile Chinook ◽  
Forest Streams

The importance of large woody debris (LWD) in forested stream ecosystems is well documented. However, little is known about LWD in northern boreal forest streams. We investigated the abundance, characteristics, and function of LWD in 13 small tributary streams of the upper Yukon River basin, Yukon Territory, Canada. LWD abundance was similar to values reported from temperate regions, whereas LWD size and total volume were well below values for the Pacific Northwest. LWD formed 28% of the pools, which provide important habitat for juvenile chinook salmon (Oncorhynchus tshawytscha Walbaum). The median diameter of pool-forming pieces was 17 cm, and ring counts on fallen riparian trees indicated that pool-forming pieces were likely 70–200 years old when downed. Juvenile chinook salmon density was correlated with LWD abundance in our study reaches. We conclude that despite differences in climate and forest type, LWD in Yukon streams and LWD in temperate regions appear to perform a similar function in creating fish habitat. Resource managers should consider the relatively slow tree growth and thus potentially long recovery times following human disturbances in these watersheds.

scholarly journals Dynamics of Territorial Occupation by North American Beavers in Canadian Boreal Forests: A Novel Dendroecological Approach

Forests ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 221 ◽  
Author(s):  
Julie-Pascale Labrecque-Foy ◽  
Hubert Morin ◽  
Miguel Montoro Girona
Keyword(s):  
Boreal Forest ◽  
North American ◽  
Water Body ◽  
Boreal Forests ◽  
Castor Canadensis ◽  
Natural Disturbance ◽  
Water Levels ◽  
The North ◽  
Patterns Of Use ◽  
Over Time

Research Highlights: Our study highlights a new, simple, and effective method for studying the habitat use by beavers in Canadian boreal forests. Information regarding the presence of beaver colonies and their habitat occupation is essential for proper forest management and damage prevention in the boreal forest. Background and Objectives: The North American beaver (Castor canadensis) is a major element of natural disturbance, altering the dynamics and structure of boreal forest landscapes. Beaver-related activities also affect human infrastructure, cause floods, and lead to important monetary losses for forestry industries. Our study aimed to determine the spatiotemporal patterns of beaver occupation of lodges over time. Materials and Methods: Using a dendroecological approach to date browsing activity, we studied the occupation of two lodges per water body for eight water bodies located in the boreal forest of Québec, Canada. Results: Three sites showed alternating patterns of lodge use (occupation) over time, three sites (37.5%) demonstrated no alternating patterns of use, and two sites (25%) presented unclear patterns of lodge use. Conclusions: Alternating patterns of lodge use can be linked to food depletion and the need to regenerate vegetation around lodges, while non-alternating patterns may be related to fluctuations in water levels, the specific shrub and tree species surrounding the lodges, the size of the beaver territory, and the number of lodges present on a water body.

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