Skip to Main content Skip to Navigation
Journal articles

Diversity and distribution of cold-seep fauna associated with different geological and environmental settings at mud volcanoes and pockmarks of the Nile Deep-Sea Fan

Abstract : The Nile Deep-Sea Fan (NDSF) is located on the passive continental margin off Egypt and is characterized by the occurrence of active fluid seepage such as brine lakes, pockmarks and mud volcanoes. This study characterizes the structure of faunal assemblages of such active seepage systems of the NDSF. Benthic communities associated with reduced, sulphidic microhabitats such as sediments and carbonate crusts were sampled by remotely operated vehicles during two cruises in 2006 (BIONIL) and 2007 (MEDECO). Environmental conditions and biological factors including family-level faunal composition, density and diversity were measured at local and regional scales. Significant differences were detected at different spatial scales: (1) the fauna of reduced habitats differed substantially in activity, diversity and biomass from the non-seep environment at similar water depth, (2) cold seep microhabitats showed differences in community structure and composition related to substratum type as well as to the intensity and location of fluid emissions.
Document type :
Journal articles
Complete list of metadatas

https://hal.univ-brest.fr/hal-00671084
Contributor : Adminhal Univbrestbu <>
Submitted on : Thursday, February 16, 2012 - 3:52:53 PM
Last modification on : Friday, September 18, 2020 - 2:34:40 PM

Links full text

Identifiers

Citation

Bénédicte Ritt, Catherine Pierre, Olivier Gauthier, F. Wenzhöfer, Antje Boetius, et al.. Diversity and distribution of cold-seep fauna associated with different geological and environmental settings at mud volcanoes and pockmarks of the Nile Deep-Sea Fan. Marine Biology, Springer Verlag, 2011, 158 (6), pp.1187-1210. ⟨10.1007/s00227-011-1679-6⟩. ⟨hal-00671084⟩

Share

Metrics

Record views

527