Distribution of In-lake Coarse Woody Debris Within Old-growth and Second-growth Forest Settings PDF Download
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Author: Bruce Martin Peffers
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 156
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Book Description
Author: Bruce Martin Peffers
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 156
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 44
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Book Description
Author: Lynne M. Westphal
Publisher:
ISBN:
Category : Riparian areas
Languages : en
Pages : 46
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Book Description
Author:
Publisher: DIANE Publishing
ISBN: 1422345688
Category :
Languages : en
Pages : 156
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 806
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Author:
Publisher:
ISBN:
Category : Great Smoky Mountains National Park (N.C. and Tenn.)
Languages : en
Pages : 90
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Book Description
In the early 1900s, large sections of the Great Smoky Mountains were in- tensively logged. Since then, most locations have been allowed to naturally become forest-covered again, resulting in areas of secondary growth and old growth forest. To determine whether dierences in large woody debris (LWD) loading and channel morphology persist today, I measured LWD, channel widths and depths, and channel bed sediments of streams in old and secondary growth forest in the Great Smoky Mountains National Park. LWD pieces in streams in old growth had larger mean diameters and lengths compared to LWD in streams in secondary growth forest. Streams in old growth had 5.6 times more LWD volume than those in secondary growth. More LWD pieces were in debris dams in old growth than in secondary growth forest. Channel bed sediment size did not dier signicantly between streams in old and secondary growth forest. Channel widths and depths were signicantly larger in streams in old growth forest. LWD pieces aected channel depth primarily by creating pools and causing deposition of sediment. LWD aected width by directing stream ow toward banks and by protecting banks from erosion. I observed that the orientation of LWD was important in determining its geomorphic role. Although I found no relationship between LWD loading and watershed area, I found a relationship between watershed area and the importance of LWD in impacting channel morphology. Despite dierences in LWD frequency and total volume, streams in old and secondary growth forest diered little in width and depth in the largest watersheds in this study. However, in smaller watersheds, streams in old growth were not as narrow or as shallow as streams in secondary growth. LWD loading can vary substantially between streams, even those with similar surrounding forest types, climate, and disturbance histories; therefore, caution should be exercised when using LWD loading rates from other studies in environmental management. Despite nearly 80 years of forest regrowth, LWD loading and channel morphologies of streams still show the impacts of logging.
Author:
Publisher:
ISBN:
Category : Biodiversity
Languages : en
Pages : 156
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Book Description
Author: Bengt Gunnar Jonsson
Publisher: Wiley-Blackwell
ISBN: 9788716164322
Category : Science
Languages : en
Pages : 280
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Book Description
Today dead trees are not only viewed upon as waste and as potential sources of pest species. Instead they have gained an increased attention as key factors for biodiversity in many ecosystems. This change in focus and concern has sparked intense research activities directed to explore the ecological role of dead trees in forest ecosystems. Focus is directed into three main areas: 1) to understand the patterns of woody debris availability in relation to forest stand dynamics and effects of forestry, 2) the role of woody debris in nutrient and particularly carbon dynamics in forest ecosystems, and 3) the pattern and biology of the utilization of woody debris for a large number of wood-dependent species. This volume summarises the present knowledge and presents a set of case studies on the role of dead wood in boreal forests. The focus is on Fennoscandian boreal forests. However, the results presented have a wide applicability and thus the volume may serve as a general introduction to the importance of woody debris in forest ecosystems.
Author:
Publisher:
ISBN:
Category : Aspen
Languages : en
Pages : 68
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Book Description
Author: Rachael E. Cook
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 68
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Book Description
