Polychaete assemblages from mud volcanoes and adjacent bottoms of the Gulf of Cádiz
Authors
Rueda, J.L. (José Luis); Moreira, J. (Juan); López-Díaz, E. (Eduardo); San Martín, G. (Guillermo); Salas, C. (Carmen); González-García, E. (Emilio); Marina-Ureña, P. (Pablo); Urra, J. (Javier); Fernández-Salas, L.M. (Luis Miguel); López-González, N. (Nieves); Díaz-del-Río-Español, V. (Víctor); Gallardo-Núñez, M. (Marina)Date
2014-09Type
bookPartKeywords
Poliquetosvolcán de fango
surgencias frías
batial
Golfo de Cádiz
Abstract
The Gulf of Cádiz represents an area of extensive seepage activity in the Atlantic Ocean, with the presence of ca. 50 mud volcanoes located in Spanish, Portuguese and Moroccan waters (200-4000 m depth). Recent studies have revealed the presence of a wide variety of habitats and species due to the heterogeneous characteristics of these cold seeps and of the seabed of the Gulf of Cádiz where different geological processes, water masses and substrate types occur. Information on some components of these bathyal benthic communities (e.g. polychaetes) is very scarce, especially for those mud volcanoes located in Spanish waters of the Gulf of Cádiz.
In order to study the polychaetes assemblages, samples were collected in different areas (summit, flanks, depression, adjacent bottoms) of ten mud volcanoes located within Spanish waters (300-1100 m depth), during the INDEMARES/CHICA 0610, 0211 and 0412 surveys. Sampling was carried out using different methods such as box-corer (BC) (ca. 0.09 m2 ...
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