scholarly journals Seep communities from two mud volcanoes in the deep eastern Mediterranean Sea: faunal composition, spatial patterns and environmental control

2012 ◽  
Vol 466 ◽  
pp. 93-119 ◽  
Author(s):  
B Ritt ◽  
D Desbruyères ◽  
JC Caprais ◽  
O Gauthier ◽  
L Ruffine ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Spatial Patterns ◽  
Environmental Control ◽  
Eastern Mediterranean ◽  
Mud Volcanoes ◽  
Eastern Mediterranean Sea ◽  
Faunal Composition

scholarly journals Influence of chemosynthetic ecosystems on nematode community structure and biomass in the deep eastern Mediterranean Sea

2012 ◽  
Vol 9 (12) ◽  
pp. 18131-18173
Author(s):  
N. Lampadariou ◽  
V. Kalogeropoulou ◽  
K. Sevastou ◽  
K. Keklikoglou ◽  
J. Sarrazin
Keyword(s):  
Species Richness ◽  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Nematode Community ◽  
Cold Seep ◽  
Mud Volcanoes ◽  
Mussel Bed ◽  
Remotely Operated Vehicle ◽  
Eastern Mediterranean Sea ◽  
Density And Biomass

Abstract. Mud volcanoes are a special type of cold seeps where life is based on chemoautotrophic processes. They are considered as extreme environments and are characterised by unique megafaunal and macrofaunal communities. However, very few studies on mud volcanoes taking into account the smaller meiobenthic communities have been carried out. Two mud volcanoes were explored during the MEDECO cruise (2007) with the Remotely Operated Vehicle (ROV) Victor-6000; Amsterdam, located south of Turkey between 1700 and 2000 m depth (Anaximander mud field) and Napoli, south of Crete, located along the Mediterranean Ridge at about 2000 m depth (Olimpi mud field). The major aim of this study was to describe distributional patterns of meiofaunal communities and nematode assemblages from different seep microhabitats. Meiofaunal taxa and nematode assemblages at both mud volcanoes differed significantly from other Mediterranean sites in terms of standing stocks, dominance and species diversity. Density and biomass values were significantly higher at the seep sites, particularly at Amsterdam. Nematodes, the dominant meiofaunal taxon, displayed deeper penetration vertically into the sediment at the seep areas, indicating that biological rather than physicochemical factors are responsible for their vertical distribution. Patterns of nematode diversity varied, displaying both very high or very low species richness and dominance, depending on the habitat studied. The Lamellibrachia periphery and mussel bed of Napoli exhibited the highest species richness while the reduced sediments of Amsterdam yielded a species-poor nematode community, dominated by two successful species; one belonging to the genus Aponema and the other to the genus Sabatieria. Analysis of β-diversity showed that habitat heterogeneity of mud volcanoes contributed substantially to the total nematode species richness in the eastern Mediterranean Sea. These observations indicate a strong influence of mud volcanoes and cold-seep ecosystems on the meiofaunal communities and nematode assemblages.

scholarly journals Influence of chemosynthetic ecosystems on nematode community structure and biomass in the deep eastern Mediterranean Sea

2013 ◽  
Vol 10 (8) ◽  
pp. 5381-5398 ◽  
Author(s):  
N. Lampadariou ◽  
V. Kalogeropoulou ◽  
K. Sevastou ◽  
K. Keklikoglou ◽  
J. Sarrazin
Keyword(s):  
Species Richness ◽  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Nematode Community ◽  
Cold Seep ◽  
Cold Seeps ◽  
Mud Volcanoes ◽  
Remotely Operated Vehicle ◽  
Eastern Mediterranean Sea ◽  
Density And Biomass

Abstract. Mud volcanoes are a~special type of cold seeps where life is based on chemoautotrophic processes. They are considered to be extreme environments and are characterized by unique megafaunal and macrofaunal communities. However, very few studies on mud volcanoes taking into account the smaller meiobenthic communities have been carried out. Two mud volcanoes were explored during the MEDECO (MEditerranean Deep-sea ECOsystems) cruise (2007) with the remotely operated vehicle (ROV) Victor-6000: Amsterdam, located south of Turkey between 1700 and 2000 m depth (Anaximander mud field); and Napoli, south of Crete, located along the Mediterranean Ridge at about 2000 m depth (Olimpi mud field). The major aim of this study was to describe distributional patterns of meiofaunal communities and nematode assemblages from different seep microhabitats. Meiofaunal taxa and nematode assemblages at both mud volcanoes differed significantly from other Mediterranean sites in terms of standing stocks, dominance and species diversity. Density and biomass values were significantly higher at the seep sites, particularly at Amsterdam. Patterns of nematode diversity, the dominant meiofaunal taxon, varied, displaying both very high or very low species richness and dominance, depending on the microhabitat studied. The periphery of the Lamellibrachia and bivalve shell microhabitats of Napoli exhibited the highest species richness, while the reduced sediments of Amsterdam yielded a species-poor nematode community dominated by two successful species, one belonging to the genus Aponema and the other to the genus Sabatieria. Analysis of β-diversity showed that microhabitat heterogeneity of mud volcanoes contributed substantially to the total nematode species richness in the eastern Mediterranean Sea. These observations indicate a strong influence of mud volcanoes and cold-seep ecosystems on the meiofaunal communities and nematode assemblages.

Sedimentology and geochemistry of mud volcanoes in the Anaximander Mountain Region from the Eastern Mediterranean Sea

2015 ◽  
Vol 95 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Ezgi Talas ◽  
Muhammet Duman ◽  
Filiz Küçüksezgin ◽  
Michael L. Brennan ◽  
Nicole A. Raineault
Keyword(s):  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Mountain Region ◽  
Mud Volcanoes ◽  
Eastern Mediterranean Sea

Mud volcanoes and gas hydrates in the Anaximander mountains (Eastern Mediterranean Sea)

2009 ◽  
Vol 26 (6) ◽  
pp. 854-872 ◽  
Author(s):  
V. Lykousis ◽  
S. Alexandri ◽  
J. Woodside ◽  
G. de Lange ◽  
A. Dählmann ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Gas Hydrates ◽  
Eastern Mediterranean ◽  
Mud Volcanoes ◽  
Eastern Mediterranean Sea

Cold seep communities in the deep eastern Mediterranean Sea: composition, symbiosis and spatial distribution on mud volcanoes

2004 ◽  
Vol 51 (12) ◽  
pp. 1915-1936 ◽  
Author(s):  
Karine Olu-Le Roy ◽  
Myriam Sibuet ◽  
Aline Fiala-Médioni ◽  
Serge Gofas ◽  
Carmen Salas ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Cold Seep ◽  
Mud Volcanoes ◽  
Eastern Mediterranean Sea
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