Spatial relationships between polychaete assemblages and environmental variables over broad geographical scales

Simple item page
dc.contributor.authorBenedetti-Cecchi, Lisandroen_ZA
dc.contributor.authorIken, Katrinen_ZA
dc.contributor.authorKonar, Brendaen_ZA
dc.contributor.authorCruz-Motta, Juanen_ZA
dc.contributor.authorKnowlton, Annen_ZA
dc.contributor.authorPohle, Gerharden_ZA
dc.contributor.authorCastelli, Albertoen_ZA
dc.contributor.authorTamburello, Lauraen_ZA
dc.contributor.authorMead, Angelaen_ZA
dc.contributor.authorTrott, Tomen_ZA
dc.date.accessioned2015-11-16T04:14:16Z
dc.date.available2015-11-16T04:14:16Z
dc.date.issued2010en_ZA
dc.description.abstractThis 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.en_ZA
dc.identifier.apacitationBenedetti-Cecchi, L., Iken, K., Konar, B., Cruz-Motta, J., Knowlton, A., Pohle, G., ... Trott, T. (2010). Spatial relationships between polychaete assemblages and environmental variables over broad geographical scales. <i>PLoS One</i>, http://hdl.handle.net/11427/15035en_ZA
dc.identifier.chicagocitationBenedetti-Cecchi, Lisandro, Katrin Iken, Brenda Konar, Juan Cruz-Motta, Ann Knowlton, Gerhard Pohle, Alberto Castelli, Laura Tamburello, Angela Mead, and Tom Trott "Spatial relationships between polychaete assemblages and environmental variables over broad geographical scales." <i>PLoS One</i> (2010) http://hdl.handle.net/11427/15035en_ZA
dc.identifier.citationBenedetti-Cecchi, L., Iken, K., Konar, B., Cruz-Motta, J., Knowlton, A., Pohle, G., ... & Maggi, E. (2010). Spatial relationships between polychaete assemblages and environmental variables over broad geographical scales. PloS one, 5(9), e12946. doi:10.1371/journal.pone.0012946en_ZA
dc.identifier.ris TY - Journal Article AU - Benedetti-Cecchi, Lisandro AU - Iken, Katrin AU - Konar, Brenda AU - Cruz-Motta, Juan AU - Knowlton, Ann AU - Pohle, Gerhard AU - Castelli, Alberto AU - Tamburello, Laura AU - Mead, Angela AU - Trott, Tom AB - 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. DA - 2010 DB - OpenUCT DO - 10.1371/journal.pone.0012946 DP - University of Cape Town J1 - PLoS One LK - https://open.uct.ac.za PB - University of Cape Town PY - 2010 T1 - Spatial relationships between polychaete assemblages and environmental variables over broad geographical scales TI - Spatial relationships between polychaete assemblages and environmental variables over broad geographical scales UR - http://hdl.handle.net/11427/15035 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/15035
dc.identifier.urihttp://dx.doi.org/10.1371/journal.pone.0012946
dc.identifier.vancouvercitationBenedetti-Cecchi L, Iken K, Konar B, Cruz-Motta J, Knowlton A, Pohle G, et al. Spatial relationships between polychaete assemblages and environmental variables over broad geographical scales. PLoS One. 2010; http://hdl.handle.net/11427/15035.en_ZA
dc.language.isoengen_ZA
dc.publisherPublic Library of Scienceen_ZA
dc.publisher.departmentDepartment of Biological Sciencesen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en_ZA
dc.rights.holder© 2010 Benedetti-Cecchi et alen_ZA
dc.rights.urihttp://creativecommons.org/licenses/by/4.0en_ZA
dc.sourcePLoS Oneen_ZA
dc.source.urihttp://journals.plos.org/plosoneen_ZA
dc.subject.otherEigenvectorsen_ZA
dc.subject.otherPollutionen_ZA
dc.subject.otherBrazilen_ZA
dc.subject.otherEnvironmental geographyen_ZA
dc.subject.otherSpatial and landscape ecologyen_ZA
dc.subject.otherMarine ecologyen_ZA
dc.subject.otherArgentinaen_ZA
dc.subject.otherColombiaen_ZA
dc.titleSpatial relationships between polychaete assemblages and environmental variables over broad geographical scalesen_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Benedetti_Cecchi_Spatial_Relationships_2010.pdf
Size:
1.94 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Journal Articles