From an Antagonistic to a Synergistic Predator Prey Perspective: Bifurcations in Marine Ecosystem
Academic Press, 11. mar. 2014 - 228 sider
From an Antagonistic to a Synergistic Predator Prey Perspective: Bifurcations in Marine Ecosystems is a groundbreaking reference that challenges the widespread perception that predators generally have a negative impact on the abundance of their prey, and it proposes a novel paradigm — Predator-prey Synergism — in which both predator and prey enhance abundance by their co-existence. Using this model, the text explains a number of issues that appear paradoxical in the case of a negative predator-prey relationship, including observed ecosystem bifurcations (regime shifts), ecosystem resilience, red tides in apparently nutrient depleted water, and the dominance of grazed phytoplankton over non-grazed species under high grazing pressure. This novel paradigm can also be used to predict the potential impact of global warming on marine ecosystems, identify how marine ecosystem may respond to gradual environmental changes, and develop possible measures to mitigate the negative impact of increasing temperature in marine ecosystems. This book approaches the long-standing question of what generates recruitment variability in marine fishes and invertebrates in an engaging and unique way that students and researchers in marine ecosystems will understand.
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4 Growth and Mortality in Settled Atlantic Cod in Relation to DietEvidence for a Recruitment Mechanism
Concurrent Recruitment Collapses in Gadoid Fishes and Changes in the Plankton Community
6 PredatorPrey Synergism in Plankton
7 Ecological Implications of PredatorPrey Synergism in Marine Ecosystems
8 Variability Enhancing and Variability Dampening Mechanisms in Marine Ecosystems
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0-group cod 0-group gadoids abundance of 0-group algae algal blooms algal prey Atlantic cod autumn bloom beach benthic bifurcations biomass bottom flora changes Chapter cod Gadus morhua competition copepods decrease diet dinoflagellates Ecol ecology eelgrass environmental conditions euphotic eutrophication finmarchicus fish fjord Flødevigen food web goby grazing Grenland growth rate Hence herbivores Holmestrandfjord hyperbenthic prey impact increase Inner Oslofjord inter-annual larger larval Limnol locations marine ecosystems mechanism microzooplankton mortality non-grazed North Sea Norwegian Skagerrak coast nutrient loads nutrients observed Oceanogr oxygen pelagic pelagic prey period phytoplankton planktivores plankton community planktonic prey pollack predation predator-prey primary productivity Prog recruitment collapses recruitment failure recruitment variability reduced regime shifts relationship resilience result Risør Risør archipelago sampling sand goby Sandnesfjord September settlement Søndeledfjord spawning species spring bloom strong year-classes studies subareas substantial suggest summer survival synergistic temperature tion Torvefjord trophic levels year-class strength zooplankton