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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Spatial relationships between polychaete assemblages and environmental variables over broad geographical scales
PLoS ONE, Volume 5, No. 9, Article e12946, Year 2010
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Description
This study examined spatial relationships between rocky shore polychaete assemblages and environmental variables over broad geographical scales, using a database compiled within the Census of Marine Life NaGISA (Natural Geography In Shore Areas) research program. The database consisted of abundance measures of polychaetes classified at the genus and family levels for 74 and 93 sites, respectively, from nine geographic regions. We tested the general hypothesis that the set of environmental variables emerging as potentially important drivers of variation in polychaete assemblages depend on the spatial scale considered. Through Moran's eigenvector maps we indentified three submodels reflecting spatial relationships among sampling sites at intercontinental (>10000 km), continental (1000-5000 km) and regional (20-500 km) scales. Using redundancy analysis we found that most environmental variables contributed to explain a large and significant proportion of variation of the intercontinental submodel both for genera and families (54% and 53%, respectively). A subset of these variables, organic pollution, inorganic pollution, primary productivity and nutrient contamination was also significantly related to spatial variation at the continental scale, explaining 25% and 32% of the variance at the genus and family levels, respectively. These variables should therefore be preferably considered when forecasting large-scale spatial patterns of polychaete assemblages in relation to ongoing or predicted changes in environmental conditions. None of the variables considered in this study were significantly related to the regional submodel. © 2010 Benedetti-Cecchi et al.
Available Materials
https://efashare.b-cdn.net/share/pmc/articles/PMC2944868/bin/pone.0012946.s001.doc
https://efashare.b-cdn.net/share/pmc/articles/PMC2944868/bin/pone.0012946.s002.doc
https://efashare.b-cdn.net/share/pmc/articles/PMC2944868/bin/pone.0012946.s003.doc
https://efashare.b-cdn.net/share/pmc/articles/PMC2944868/bin/pone.0012946.s004.doc
https://efashare.b-cdn.net/share/pmc/articles/PMC2944868/bin/pone.0012946.s005.tif
https://efashare.b-cdn.net/share/pmc/articles/PMC2944868/bin/pone.0012946.s006.tif
https://efashare.b-cdn.net/share/pmc/articles/PMC2944868/bin/pone.0012946.s007.tif
Authors & Co-Authors
Benedetti-Cecchi, L.
Italy, Pisa
Università Di Pisa
Iken, Katrin B.
United States, Fairbanks
University of Alaska Fairbanks
Konar, Brenda H.
United States, Fairbanks
University of Alaska Fairbanks
Cruz-Motta, Juan José
Venezuela, Caracas
Universidad Simón Bolívar
Knowlton, Ann L.
United States, Fairbanks
University of Alaska Fairbanks
Pohle, Gerhard W.
Canada, St Andrews
Huntsman Marine Science Centre
Castelli, Alberto
Italy, Pisa
Università Di Pisa
Tamburello, Laura
Italy, Pisa
Università Di Pisa
Mead, Angela
South Africa, Cape Town
University of Cape Town
Trott, Tom James
United States, Boston
Suffolk University
Miloslavich, Patricia
Venezuela, Caracas
Universidad Simón Bolívar
Wong, Melisa C.
Canada, Dartmouth
Bedford Institute of Oceanography, Fisheries and Oceans Canada
Shirayama, Yoshihisa
Japan, Kyoto
Kyoto University
Lardicci, Claudio
Italy, Pisa
Università Di Pisa
Palomo, Gabriela
Argentina, Buenos Aires
Museo Argentino de Ciencias Naturales Bernardino Rivadavia
Maggi, Elena
Italy, Pisa
Università Di Pisa
Statistics
Citations: 35
Authors: 16
Affiliations: 9
Identifiers
Doi:
10.1371/journal.pone.0012946
e-ISSN:
19326203
Research Areas
Environmental