This study was designed to determine what effects different forest harvesting practices have on lake ecosystems in the Pacific (Vancouver Island) and Omineca-Peace (central interior) regions. The biogeoclimatic regimes in these two areas vary significantly with coastal western and mountain hemlock predominating on Vancouver Island and subboreal spruce and Engleman spruce comprising the areas of interest in the Omineca-Peace region. Landscape-scale responses to ecosystem disturbance was expected to vary between these two regions as the geomorphic and climatic regimes are quite different. Sediment cores from 21 lakes were obtained and dated using 210Pb techniques. Paleolimnological techniques including the analysis of diatoms allowed the comparison of species composition before and after harvesting. In each of the regions, a set of reference (control) lakes were sampled. Changes in organic matter content of the core were also used to evaluate the lake response to forest harvesting activities. 210Pb results allo
Petticrew, Dr. Ellen. 1999. Evaluations of the Effects of Different Forest Harvesting Practices on Lake Ecosystems in British Columbia. BC Ministry of Environment Lands and Parks
Keywords: forest harvesting practices, lake ecosystems
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