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Some Effects of Forest Harvesting on a Central Interior Lake in British Columbia Parkinson, E.A.
1977
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Abstract: A study of the effectiveness of stream protection measures incorporated in an interior forest harvesting plan provided the opportunity to examine possible changes in the limnology and fish populations of a lake in a logged (Tumuch Lake) and unlogged (Shandy Lake) watershed. Sediment and nutrient loading were greater in the lake in the logged watershed compared to that in the unlogged watershed. Average light penetration during spring to early summer was greatly reduced as deforestation increased from 1.6% of the Tumuch Lake watershed in 1972 to 7.3% in 1974; Secchi disc readings in the inlet basin were frequently <2 m throughout May and June. Both primary production and algal biomass (chlorophyll a) were less in Tumuch Lake than in Shandy Lake, particularly in the Tumuch Inlet basin. Macro-zooplankton and benthos populations were generally less in both Tumuch Lake basins, although high annual variation of the zooplankton numbers was evident in both lakes. Growth rates of most salmonid fish, back-calculated fo
 
Parkinson, E.A., Slaney, P.A.; Halsey, T.G.. 1977. Some Effects of Forest Harvesting on a Central Interior Lake in British Columbia. Ministry of Environment. Fisheries Management Report. FMR17
 
Topic: Fish and Fish Habitats
Keywords: stream protection measures, logging, forest harvesting, roads, impacts, sedimentation, nutrient loading, light penetration, salmonids, limnology, rainbow trout, mountain whitefish, primary production, zooplankton, algae. Tumuch Lake, Shandy Lake
ISSN:  Scientific Name: Prosopium williamsoni, Oncorhynchus mykiss
ISBN:  English Name: Rainbow Trout, Mountain Whitefish
Other Identifier: 
 
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