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The Biology of Lakes and Ponds$
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Christer Brönmark and Lars-Anders Hansson

Print publication date: 2017

Print ISBN-13: 9780198713593

Published to Oxford Scholarship Online: December 2017

DOI: 10.1093/oso/9780198713593.001.0001

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Food Web Interactions in Freshwater Ecosystems

Food Web Interactions in Freshwater Ecosystems

(p.180) 5 Food Web Interactions in Freshwater Ecosystems
The Biology of Lakes and Ponds

Christer Brönmark

Lars-Anders Hansson

Oxford University Press

This chapter on food web interactions connects the organisms and their interactions with the abiotic frame and provides a helicopter perspective on the function of freshwater ecosystems. Initially, the theoretical basis for an ecosystem approach is outlined, including food web theory, the bottom-up and top-down concepts and how these have evolved in concert with empirical advances. Specifically, the concepts of cascading trophic interactions and alternative stable states are discussed both from a theoretical and empirical viewpoint, as well as in both benthic and pelagic habitats. This chapter links all components, from microbes to vertebrates, to temporal and spatial changes in abiotic features leading to successional patterns in populations and communities.

Keywords:   food web, food chain, ecosystem, trophic cascade, bottom-up, top-down, predator, herbivore, omnivore, subsidize, defence, Adaptation, alternative stable state

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