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Título : Benthic macroinfaunal communities of the pockmark fields in the south-eastern Bay of Biscay
Autor : Garmendia, Joxe Mikel; Muxika, Inigo; Rodriguez, Jose German; Arrese, Beatriz; Diez-Garcia, Irene; Gomez-Ballesteros, Maria; Sanchez, Francisco; Borja, Angel; Galparsoro, Ibon
Resumen : Pockmarks are concave depressions on the sea bottom produced by fluid escape from subaqueous sediments which can be found worldwide in muddy and silt/clay sediments. Due to their morphological and geochemical characteristics, certain pockmarks play an important role in structuring benthic communities, and consequently, they have been proposed to be protected. The present research provides a characterisation of the benthic macrofauna composition in pockmark fields in the southeaster Bay of Biscay. A total of 11 samples were acquired in and close to pockmarks covering a range of depths of 414-992 m. The survey strategy considered the acquisition of one sample inside of each of the selected pockmarks and another sample near, but out of them. Collected macrofaunal organisms were identified at lowest taxonomical level (species) when possible, structural parameters were calculated and a hierarchical cluster analysis carried out with species data. Species density, biomass, richness, diversity and evenness were found to be higher in samples collected inside pockmarks in comparison to samples obtained outside but not statistically significant. This could be explained by the inactivity of the studied pockmarks, which do not offer/generate a particular environment with unusual characteristics that limit or enhance the development of specific species/groups with special traits.
Palabras clave : Capbreton canyon; Endobenthic macrofauna; Faunistic composition; Benthic habitat; Conservation; Sedimentary habitat; MACROFAUNAL COMMUNITIES; MARINE-SEDIMENTS; COLD SEEPS; SEA-FLOOR; GAS; HETEROGENEITY; BIODIVERSITY; CARBONATE; ECOLOGY; HABITAT
Fecha de publicación : 2024
Editorial : PERGAMON-ELSEVIER SCIENCE LTD
Tipo de documento: Article; Early Access
Idioma: 
DOI: 10.1016/j.csr.2023.105162
URI : http://dspace.azti.es/handle/24689/1674
ISSN : 0278-4343
E-ISSN: 1873-6955
Patrocinador: ITSAS-TEKA (Fishing and Aquaculture Directorate
Environment, Territorial Planning, Agriculture and Fishing Department of the Basque Government)
LIFE IP PAF INTEMARES [LIFE15/IPE/ES/000012]
Aparece en las tipos de publicación: Artículos científicos



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