Document Detail


Global patterns of predator diversity in the open oceans.
MedLine Citation:
PMID:  16051749     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The open oceans comprise most of the biosphere, yet patterns and trends of species diversity there are enigmatic. Here, we derive worldwide patterns of tuna and billfish diversity over the past 50 years, revealing distinct subtropical "hotspots" that appeared to hold generally for other predators and zooplankton. Diversity was positively correlated with thermal fronts and dissolved oxygen and a nonlinear function of temperature (approximately 25 degrees C optimum). Diversity declined between 10 and 50% in all oceans, a trend that coincided with increased fishing pressure, superimposed on strong El Niño-Southern Oscillation-driven variability across the Pacific. We conclude that predator diversity shows a predictable yet eroding pattern signaling ecosystem-wide changes linked to climate and fishing.
Authors:
Boris Worm; Marcel Sandow; Andreas Oschlies; Heike K Lotze; Ransom A Myers
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-07-28
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  309     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2005 Aug 
Date Detail:
Created Date:  2005-08-26     Completed Date:  2005-08-31     Revised Date:  2007-03-19    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1365-9     Citation Subset:  IM    
Affiliation:
Biology Department, Dalhousie University, Halifax, NS, Canada B3H 4J1. bworm@dal.ca
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MeSH Terms
Descriptor/Qualifier:
Animals
Biodiversity*
Climate
Ecosystem*
Fisheries
Oceans and Seas
Oxygen / analysis
Perciformes*
Population Density
Predatory Behavior*
Regression Analysis
Seasons
Temperature
Time Factors
Tuna*
Zooplankton
Chemical
Reg. No./Substance:
7782-44-7/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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