Titlebook: Aquatic Birds in the Trophic Web of Lakes; Proceedings of a sym Joseph J. Kerekes Conference proceedings 1994 Springer Science+Business Med

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書目名稱Aquatic Birds in the Trophic Web of Lakes影響因子(影響力)




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難解

Fish-eating bird abundance in oligotrophic lakes in Kejimkujik National Park, Nova Scotia, Canadathe same period (about 200 and 130 kg fish respectively) and the estimated fish production in these lakes, there is a close balance between the size of water body and its fish production to the occupancy and production of piscivorous birds.

reception

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https://doi.org/10.1007/978-3-662-28763-7) were correlated. However, the relative abundance of ., a diving duck that may compete with fish for food, was not correlated with pH. Although individual species may be affected, community level responses of waterfowl to acidity are either absent or hard to detect at our sites.

不可磨滅

Responses of breeding duck populations to changes in food supplyuctive success. Moulting numbers of male Tufted Duck were related to chironomid abundance, but not those of Scaup and Barrow’s Goldeneye. Moulting numbers were not associated with previous reproductive output.

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Conference proceedings 1994. As a consequence, the role of aquaticbirds in freshwater ecosystems has usually been ignored. .This volume contains a wide range of papers selected from thosepresented at the symposium and reviewed. .

ascetic

s has often been overlooked. As a conspicuous part ofthe biota of water bodies, aquatic birds are indicators of theirtrophic state both in terms of species composition (quality) as wellas occupancy and breeding (quantity). Birds may also influence thetrophic state of a water body by importing nutrie

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