Influence of forest cover on in-stream large wood in an agricultural landscape of southeastern Brazil: a multi-scale analysis

Large wood (LW) is critical to the structure and function of streams and forests are the main LW source to stream channels. To assess the influence of forest cover changes at different spatial scales on in-stream LW quantity, we selected eighteen catchments (2nd–4th order) in Southeastern Brazil wit...

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Bibliographic Details
Published in:Landscape ecology 2013, Vol.28 (1), p.13-27
Main Authors: de Paula, Felipe Rossetti, Gerhard, Pedro, Wenger, Seth J., Ferreira, Anderson, Vettorazzi, Carlos Alberto, de Barros Ferraz, Silvio Frosini
Format: Article
Language:English
Subjects:
Agricultural land
Agriculture
Animal and plant ecology
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Biomedical and Life Sciences
Catchment scale
Catchments
Creeks & streams
Deforestation
Drainage patterns
Ecology
Environmental impact
Environmental Management
Forest conservation
Forestry
Fresh water ecosystems
Freshwater
Fundamental and applied biological sciences. Psychology
General aspects
General forest ecology
Generalities. Production, biomass. Quality of wood and forest products. General forest ecology
Land degradation
Landscape
Landscape Ecology
Landscape/Regional and Urban Planning
Life Sciences
Nature Conservation
Research Article
Riparian forests
Sustainable Development
Synecology
Wood
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Summary:Large wood (LW) is critical to the structure and function of streams and forests are the main LW source to stream channels. To assess the influence of forest cover changes at different spatial scales on in-stream LW quantity, we selected eighteen catchments (2nd–4th order) in Southeastern Brazil with forests at different levels of alterations. In each catchment we quantified the pattern of forest cover (% cover and relative catchment position), the physical characteristics of catchments (elevation and slope), the characteristics of channels (wetted channel width and depth), the abundance and volume of in-stream LW, and the frequency of LW pools. We used simple and multiple linear regression to assess the response of LW variables to landscape and stream reach variables. Most of the LW was relatively small; 72 % had a diameter
ISSN:0921-2973
1572-9761
DOI:10.1007/s10980-012-9809-1