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Sacbrood
And conclusions. pp. 52.
Bulletin
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Bulletin
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Aquatic Birds in the Trophic Web of Lakes
Birds are an integral part of most freshwater ecosystems (lakes, rivers, wetlands) but their role in the trophic dynamics of these water bodies has often been overlooked. As a conspicuous part of the biota of water bodies, aquatic birds are indicators of their trophic state both in terms of species composition (quality) as well as occupancy and breeding (quantity). Birds may also influence the trophic state of a water body by importing nutrients (.e.g. resident or migrating birds feeding on adjacent watersheds or the sea). Because of anthropogenic activities, predation or their mobility, birds may not utilize otherwise suitable aquatic habitat. These factors complicate the relationship between aquatic bird production and the trophic status of habitats. As a consequence, the role of aquatic birds in freshwater ecosystems has usually been ignored. This volume contains a wide range of papers selected from those presented at the symposium and reviewed.
Rattlesnakes: Their Habits, Life Histories, and Influence on Mankind
Focuses on rattlesnake ecology, taxonomy, physiology, reproduction, and behavior.
Geschiedenis van Pesse (set)
In het eerste deel van Geschiedenis van Pesse komen landschap en archeologisch onderzoek aan bod. In het tweede deel worden de marke, erven en bewoners behandeld.
Department Bulletin
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