Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53700#.VNBnryzQrzE Author(s)    Ramandeep S. Sidhu 1* , Mark Dougherty 1 , Wesley C. Zech 2 , Beth Guertal 3   Affiliation(s) 1 Department of Biosystems Engineering, Auburn University, Auburn, USA . 2 Department of Civil Engineering, Auburn University, Auburn, USA . 3 Department of Crop, Soils and Environmental Sciences, Auburn University, Auburn, USA . ABSTRACT The main goal of this study was to quantify reduction of runoff responses using selected erosion control covers on 1.2 m × 0.6 m plots under simulated rainfall to determine the most cost-effective temporary cover treatment under similar soils, rainfall and embankment slope conditions. The different erosion control covers tested were polyacrylamide (PAM), wheat straw and PAM (WS + P) with and without seed; and engineered fiber matrix (EFM) with and without seed. The EFM + S and WS + P + S tr...

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53511#.VMcrXyzQrzE Author(s)    Amalesh Dhar 1,2* , Jian R. Wang 3 , Christopher D. B. Hawkins 1,4   Affiliation(s) 1 Mixedwood Ecology and Management Program, University of Northern British Columbia, Prince George, Canada . 2 Earth & Environmental Sciences and Physical Geography, University of British Columbia, Kelowna, Canada . 3 Faculty of Natural Resource Management, Lakehead University, Thunder Bay, Canada . 4 Yukon Research Centre, Yukon College, Whitehorse, Canada . ABSTRACT Strategies for managing mixed broadleaf-conifer stands in British Columbia (BC) have been under review in recent years as the benefits of mixedwood management have been recognized. More has been learned about the role of broadleaves in forest ecosystems however ecosystem-specific knowledge about the competitive interactions between mixed broadleaf-conifer stands is sti...