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Relative influence of landform, hydrology, and stream habitat on benthic macroinvertebrate communities in a managed northern hardwood forest

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Title: Relative influence of landform, hydrology, and stream habitat on benthic macroinvertebrate communities in a managed northern hardwood forest
Author: Daoust, Kristin
Department: School of Environmental Sciences
Program: Environmental Sciences
Advisor: Sibley, Paul
Abstract: In this study, I use a combination of field measurements and modelling based on a comprehensive suite of landscape, hydrological, chemical, and habitat variables to develop predictive relationships between these variables and benthic macroinvertebrate (BMI) community composition of forested streams, which can be used as indicators of Aquatic Ecosystem Services (AES). I focus on the Lower Batchawana Watershed (LBW), a mixed hardwood forest north of Sault Saint Marie, Ontario, which contains a gradient of disturbance, ranging from undisturbed to intensively harvested over the past 25 years. I show that catchment size and stream flow rise rate have the largest influence on BMI community structure in the LBW, while forest harvest had no measurable effect. By better defining the relationship between physicochemical and biological indicators of AES, I hope to provide forest managers with the information required to make effective monitoring and management decisions aimed at ensuring sustainability of forest-based AES.
URI: http://hdl.handle.net/10214/10231
Date: 2017-01-27


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