Biodiversity patterns of epifaunal assemblages associated with the gorgonians Eunicella gazella and Leptogorgia lusitanica in response to host, space and time

Handle URI:
http://hdl.handle.net/10754/577070
Title:
Biodiversity patterns of epifaunal assemblages associated with the gorgonians Eunicella gazella and Leptogorgia lusitanica in response to host, space and time
Authors:
Carvalho, Susana ( 0000-0003-1300-1953 ) ; Cúrdia, João; Pereira, Fábio; Guerra-García, José Manuel; Santos, Miguel N.; Cunha, Marina R.
Abstract:
Patterns of biodiversity (alpha- and beta-diversity), abundance and community structure of the epifaunal assemblages associated with two gorgonians, Eunicella gazella and Leptogorgia lusitanica, were analysed in relation to host, colony size, location and time. Colony size and time were the major factors shaping attendant assemblages. Patterns of alpha-diversity and beta-diversity were host-dependent. Assemblages associated with E. gazella showed a significant inter-annual variability for most of the metrics analysed, while in those associated with L. lusitanica only Shannon-Wiener varied significantly between years. In L lusitanica Hurlbert's expected number of taxa was significantly lower in small-sized than in medium- to large-sized colonies, but an opposite pattern was detected for beta-diversity, reflecting the higher heterogeneity among small-sized colonies. The dbRDA analysis segregated the assemblages associated with each of the two hosts; the faunal patterns were mainly explained by colony size related attributes (area, number of branches and, to a lesser extent, width) and the "colonial" epibiont cover. However, we suggest that altogether they may act as a metacommunity, with high temporal and spatial fluidity in their composition and structure related to multiple factors including not only a component of stochasticity but also life history events, biotic interactions and response to habitat heterogeneity and environmental variability. (C) 2013 Elsevier B.V. All rights reserved.
KAUST Department:
Red Sea Research Center (RSRC)
Publisher:
Elsevier BV
Journal:
Journal of Sea Research
Issue Date:
Jan-2014
DOI:
10.1016/j.seares.2013.10.001
Type:
Article
ISSN:
1385-1101
Sponsors:
S.C. (SFRH/BPD/26986/2006) and J.C. (SFRH/BD/29491/2006) benefit from post-Doctoral and PhD grants, respectively, awarded by the "Fundacao para a Ciencia e a Tecnologia" (FCT). The authors are grateful to the three anonymous reviewers and to the associate editor, Dr. Judi Hewitt, for providing valuable comments and suggestions, which improved an earlier version of the manuscript.
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorCarvalho, Susanaen
dc.contributor.authorCúrdia, Joãoen
dc.contributor.authorPereira, Fábioen
dc.contributor.authorGuerra-García, José Manuelen
dc.contributor.authorSantos, Miguel N.en
dc.contributor.authorCunha, Marina R.en
dc.date.accessioned2015-09-10T09:28:25Zen
dc.date.available2015-09-10T09:28:25Zen
dc.date.issued2014-01en
dc.identifier.issn1385-1101en
dc.identifier.doi10.1016/j.seares.2013.10.001en
dc.identifier.urihttp://hdl.handle.net/10754/577070en
dc.description.abstractPatterns of biodiversity (alpha- and beta-diversity), abundance and community structure of the epifaunal assemblages associated with two gorgonians, Eunicella gazella and Leptogorgia lusitanica, were analysed in relation to host, colony size, location and time. Colony size and time were the major factors shaping attendant assemblages. Patterns of alpha-diversity and beta-diversity were host-dependent. Assemblages associated with E. gazella showed a significant inter-annual variability for most of the metrics analysed, while in those associated with L. lusitanica only Shannon-Wiener varied significantly between years. In L lusitanica Hurlbert's expected number of taxa was significantly lower in small-sized than in medium- to large-sized colonies, but an opposite pattern was detected for beta-diversity, reflecting the higher heterogeneity among small-sized colonies. The dbRDA analysis segregated the assemblages associated with each of the two hosts; the faunal patterns were mainly explained by colony size related attributes (area, number of branches and, to a lesser extent, width) and the "colonial" epibiont cover. However, we suggest that altogether they may act as a metacommunity, with high temporal and spatial fluidity in their composition and structure related to multiple factors including not only a component of stochasticity but also life history events, biotic interactions and response to habitat heterogeneity and environmental variability. (C) 2013 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipS.C. (SFRH/BPD/26986/2006) and J.C. (SFRH/BD/29491/2006) benefit from post-Doctoral and PhD grants, respectively, awarded by the "Fundacao para a Ciencia e a Tecnologia" (FCT). The authors are grateful to the three anonymous reviewers and to the associate editor, Dr. Judi Hewitt, for providing valuable comments and suggestions, which improved an earlier version of the manuscript.en
dc.publisherElsevier BVen
dc.titleBiodiversity patterns of epifaunal assemblages associated with the gorgonians Eunicella gazella and Leptogorgia lusitanica in response to host, space and timeen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalJournal of Sea Researchen
dc.contributor.institutionIPMA, P-8700305 Olhao, Portugalen
dc.contributor.institutionUniv Aveiro, Dept Biol, P-3810193 Aveiro, Portugalen
dc.contributor.institutionUniv Aveiro, CESAM, P-3810193 Aveiro, Portugalen
dc.contributor.institutionUniv Seville, Fac Biol, Dept Fisiol & Biol Anim, E-41012 Seville, Spainen
kaust.authorCarvalho, Susanaen
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