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The effects of land uses on forest vegetation structure are examined for the islands between Vancouver Island and the British Columbia mainland. Past and futue habitat changes are discussed. From this, we suggest probable changes to the bird communities that have already occurred as well as speculate on further modifications. Logging has been identified as the land use activity with the greatest impact on forest structure and hence on the forest bird community. Within the next century, intensive forest management will eliminate most late mature and old-growth forests. Cutting rotations of <100 years will result in many species of birds losing most of their breeding habitat. The species that will be most adversely affected are primary and secondary cavity nesters, those requiring massive upper limbs in tall trees for nesting, and those that reproduce and forage exclusively in mature stands. As silvicultural manipulations increase in the future, deciduous shrubs and trees will be reduced, and the early stages
Morgan, Kenneth, Hetherington, Anne; Wetmore, Stephen. 1985. The Effects of Forest Management on Bird Communities of the Coastal Islands of Southern British Columbia: Problem Analysis. Ministry of Forests. Wildlife Habitat Research Report. WHR-19
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