Drivers of deep Mediterranean megabenthos communities along longitudinal and bathymetric gradients

Drivers of deep Mediterranean megabenthos communities along longitudinal and bathymetric gradients

12 pages, 5 figures, 1 table, supplementary material in https://doi.org/10.3354/meps09333

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Main Authors: Tecchio, Samuele, Ramírez-Llodra, Eva, Sardà, Francisco, Company, Joan B., Palomera, Isabel, Mechó, Ariadna, Pedrosa-Pàmies, Rut, Sánchez-Vidal, Anna
Format: artículo biblioteca
Language:English
Published: Inter Research 2011-10-20
Subjects:Deep-sea, Mediterranean, Megafauna, Environmental factors, POC, Biodiversity,
Online Access:http://hdl.handle.net/10261/72116
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spelling dig-icm-es-10261-721162021-12-17T11:38:22Z Drivers of deep Mediterranean megabenthos communities along longitudinal and bathymetric gradients Tecchio, Samuele Ramírez-Llodra, Eva Sardà, Francisco Company, Joan B. Palomera, Isabel Mechó, Ariadna Pedrosa-Pàmies, Rut Sánchez-Vidal, Anna Deep-sea Mediterranean Megafauna Environmental factors POC Biodiversity 12 pages, 5 figures, 1 table, supplementary material in https://doi.org/10.3354/meps09333 The Mediterranean deep sea, being isothermal and longitudinally trophic-graded, is an optimal natural benchmark to test for macro-ecological patterns of species distribution. The relevance of environment-biota interactions on deep-sea megafauna in the Mediterranean Sea, a matter still neglected, is addressed here along longitudinal and bathymetric axes. Benthic and nektobenthic megafauna were collected in the 3 basins of the Mediterranean: the western (Catalan Sea and southern Balearic), central (western Ionian) and eastern (south of Crete) basins, with an otter-trawl Maireta system and an Agassiz dredge between 1200 and 4000 m depth. Simultaneously, environmental data were collected on surface production, near-bottom physical parameters, sediment grain size and carbon content. Megafaunal biomass was higher in the Catalan Sea, decreasing eastward and with depth. Species diversity and evenness were relatively constant in the western and central Mediterranean at all depths, whereas these indices decreased with depth in the eastern Mediterranean. β-diversity analyses indicated a high species turnover between areas. The 3 basins presented significantly different environmental conditions. Sediment particulate organic carbon, surface fluorescence and sediment grain size were the 3 environmental variables that best explained the distribution of megabenthos along the longitudinal Mediterranean axis. These results show that the food supply, from either the surface or from the adjacent deepsea floor, is critical in regulating the biodiversity of deep-sea Mediterranean megafauna and that this diversity is pooled region-wide. The heterogeneity of resources may be essential in maintaining these high levels of local and regional diversity This work was funded through the BIOFUN project (CTM2007-28739-E) by the European Science Foundation, the PROMETEO Spanish national project (CTM2007-66316- C02/MAR) by the CICYT and the European Community’s Seventh Framework Programme under the HERMIONE project (Grant Agreement 226354). Geological analyses were supported by projects GRACCIE-CONSOLIDER (CSD2007-00067), REDECO (CTM2008-04973-E/MAR) and a Generalitat de Catalunya ‘Grups de Recerca Consolidats’ grant (2009 SGR 1305). S.T. was funded by a JAE-PRE-2008 grant, and E.R.L. was funded by a JAE-DOC-2008 grant, both from the Spanish Research Council (CSIC), Spain Peer Reviewed 2013-03-13T11:52:50Z 2013-03-13T11:52:50Z 2011-10-20 2013-03-13T11:52:51Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.3354/meps09333 issn: 0171-8630 e-issn: 1616-1599 Marine Ecology Progress Series 439: 181-192 (2011) http://hdl.handle.net/10261/72116 10.3354/meps09333 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/226354 https://doi.org/10.3354/meps09333 open Inter Research
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
topic Deep-sea
Mediterranean
Megafauna
Environmental factors
POC
Biodiversity
Deep-sea
Mediterranean
Megafauna
Environmental factors
POC
Biodiversity
spellingShingle Deep-sea
Mediterranean
Megafauna
Environmental factors
POC
Biodiversity
Deep-sea
Mediterranean
Megafauna
Environmental factors
POC
Biodiversity
Tecchio, Samuele
Ramírez-Llodra, Eva
Sardà, Francisco
Company, Joan B.
Palomera, Isabel
Mechó, Ariadna
Pedrosa-Pàmies, Rut
Sánchez-Vidal, Anna
Drivers of deep Mediterranean megabenthos communities along longitudinal and bathymetric gradients
description 12 pages, 5 figures, 1 table, supplementary material in https://doi.org/10.3354/meps09333
format artículo
topic_facet Deep-sea
Mediterranean
Megafauna
Environmental factors
POC
Biodiversity
author Tecchio, Samuele
Ramírez-Llodra, Eva
Sardà, Francisco
Company, Joan B.
Palomera, Isabel
Mechó, Ariadna
Pedrosa-Pàmies, Rut
Sánchez-Vidal, Anna
author_facet Tecchio, Samuele
Ramírez-Llodra, Eva
Sardà, Francisco
Company, Joan B.
Palomera, Isabel
Mechó, Ariadna
Pedrosa-Pàmies, Rut
Sánchez-Vidal, Anna
author_sort Tecchio, Samuele
title Drivers of deep Mediterranean megabenthos communities along longitudinal and bathymetric gradients
title_short Drivers of deep Mediterranean megabenthos communities along longitudinal and bathymetric gradients
title_full Drivers of deep Mediterranean megabenthos communities along longitudinal and bathymetric gradients
title_fullStr Drivers of deep Mediterranean megabenthos communities along longitudinal and bathymetric gradients
title_full_unstemmed Drivers of deep Mediterranean megabenthos communities along longitudinal and bathymetric gradients
title_sort drivers of deep mediterranean megabenthos communities along longitudinal and bathymetric gradients
publisher Inter Research
publishDate 2011-10-20
url http://hdl.handle.net/10261/72116
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