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180606s2007 xx |||||o 00| ||eng c |
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|a (DE-627)JST114408556
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|a (JST)24871423
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Sonnenholzner, Jorge I.
|e verfasserin
|4 aut
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|a Cascading effects of fishing on Galapagos rocky reef communities
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a Computermedien
|b c
|2 rdamedia
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|a Online-Ressource
|b cr
|2 rdacarrier
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|a ABSTRACT: A replicated comparison of heavily and lightly fished areas in the Galapagos suggested that fishing predators led to an increase in herbivores and a dramatic shift in the algal community toward crustose barrens. We sampled 10 highly fished and 10 lightly fished shallow rocky reefs in the southeastern area of the Galapagos Marine Reserve, Ecuador. Negative associations between consumers and resources suggested top-down control. At cold sites, there was a negative association between slate-pencil urchinsEucidaris galapagensisand non-coralline algae. In addition, at cold sites, pencil urchins were less abundant where there were many predators. An indirect positive association between predators and non-coralline algae occurred at warm and cold sites. Fishing appeared to affect this trophic cascade. The spiny lobsterPanulirus penicillatus, the slipper lobsterScyllarides astori, and the Mexican hogfishBodianus diplotaeniawere significantly less abundant at highly fished sites. Urchin density was higher at highly fished sites. Non-coralline algae were nearly absent from highly fished sites where a continuous carpet of the anemoneAiptasiasp. was recorded and the algal assemblage was mainly structured by encrusting coralline and articulated calcareous algae.
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|a © Inter-Research 2007
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|a Trophic cascade
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|a Fishing
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|a Predation
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|a Population structure
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|a Eucidaris galapagensis
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|a Galapagos Marine Reserve
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|a Ecuador
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|a Biological sciences
|x Biology
|x Zoology
|x Animals
|x Invertebrates
|x Aquatic invertebrates
|x Aquatic arthropods
|x Crustaceans
|x Lobsters
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650 |
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4 |
|a Biological sciences
|x Ecology
|x Ecological processes
|x Ecosystem dynamics
|x Trophic dynamics
|x Trophic relationships
|x Predation
|x Predators
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650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Marine botany
|x Phycology
|x Algae
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650 |
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4 |
|a Biological sciences
|x Ecology
|x Wildlife ecology
|x Wildlife habitats
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4 |
|a Biological sciences
|x Ecology
|x Animal ecology
|x Animal communities
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|a Business
|x Industry
|x Industrial sectors
|x Manufacturing industries
|x Consumer goods industries
|x Clothing industry
|x Clothing
|x Clothing accessories
|x Footwear
|x Slippers
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650 |
|
4 |
|a Biological sciences
|x Biology
|x Zoology
|x Animals
|x Invertebrates
|x Aquatic invertebrates
|x Echinoderms
|x Sea urchins
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650 |
|
4 |
|a Biological sciences
|x Ecology
|x Population ecology
|x Synecology
|x Biocenosis
|x Aquatic communities
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650 |
|
4 |
|a Biological sciences
|x Ecology
|x Ecological processes
|x Ecosystem dynamics
|x Trophic dynamics
|x Trophic relationships
|x Predation
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650 |
|
4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Landforms
|x Coastal landforms
|x Coastal barriers
|x Reefs
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|a research-article
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1 |
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|a Ladah, Lydia B.
|e verfasserin
|4 aut
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1 |
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|a Lafferty, Kevin D.
|e verfasserin
|4 aut
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773 |
0 |
8 |
|i Enthalten in
|t Marine Ecology Progress Series
|d Inter-Research, 1979
|g 343(2007) vom: Aug., Seite 77-85
|w (DE-627)320617998
|w (DE-600)2022265-8
|x 16161599
|7 nnns
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1 |
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|g volume:343
|g year:2007
|g month:08
|g pages:77-85
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|u https://www.jstor.org/stable/24871423
|3 Volltext
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|d 343
|j 2007
|c 08
|h 77-85
|