|
|
|
| Registros recuperados: 10 | |
|
| |
|
|
| Ritt, Benedicte; Desbruyeres, Daniel; Caprais, Jean-claude; Gauthier, Olivier; Ruffine, Livio; Buscail, Roselyne; Olu-le Roy, Karine; Sarrazin, Jozee. |
| The Mediterranean Sea constitutes a unique environment to study cold-seep ecosystems due to the presence of different geodynamic settings, from an active margin along the Mediterranean Ridge (MR) to a passive margin in the Nile Deep-Sea Fan (NDSF). We attempted to identify the structure of benthic communities associated with the Napoli and Amsterdam mud volcanoes (MVs) located on the MR and to establish the links between faunal distribution and environmental conditions at different spatial scales. Comparison between the 2 MVs revealed that the faunal distribution seemed to be mainly controlled by the characteristics of the microhabitats. On both geological structures, the variability between the different microhabitats was higher than the variability... |
| Tipo: Text |
Palavras-chave: Mediterranean Ridge; Cold seeps; Benthic fauna; Environmental conditions; Diversity indices; Microhabitats. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00106/21725/19292.pdf |
| |
|
|
| Ritt, Benedicte; Sarrazin, Jozee; Caprais, Jean-claude; Noel, Philippe; Gauthier, Olivier; Pierre, Catherine; Henry, Pierre; Desbruyeres, Daniel. |
| A brackish-water cold seep on the North Anatolian Fault (NAF) in the Marmara Sea was investigated with the Nautile submersible during the MarNaut cruise in 2007. This active zone has already been surveyed and revealed evidence of active seeping on the seafloor, such as bubble emissions, patches of reduced sediments, microbial mats and authigenic carbonate crusts. MarNaut was the first opportunity to sample benthic communities in the three most common microhabitats (bioturbated and reduced sediments, carbonate crust) and to examine their relationships with environmental conditions. To do so, faunal communities were sampled and chemical measurements were taken close to the organisms. According to diversity indices, the bioturbated microhabitat exhibited the... |
| Tipo: Text |
Palavras-chave: Marmara Sea; Cold seep; Benthic fauna; Biological diversity; Environmental conditions; Chemosynthetic. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00014/12506/9528.pdf |
| |
|
| |
|
|
| Le Loeuff, P; Intes, A. |
| Benthic communities of the shrimp (Penaeus notialis) grounds off Grand-Bassam, Cote-d'Ivoire, exhibit distinct variations, correlated to annual changes in hydroclimate, characterized by warm and cold (upwelling) seasons. These changes appear to be the result of the well-defined reproduction periods of many short-living benthic species, as clearly shown by the peaks of abundance in the samples, at different times of the year, but quite often at the end of the cold and the beginning of the warm seasons (September-November). Many species show marked diel rhythms, either diurnal (pagurids, brachyurans) or nocturnal (macrurans, brachyurans, molluscs), so that the species composition displays distinct differences between day and night samples (February 1970... |
| Tipo: Text |
Palavras-chave: Faune benthique; Golfe de Guinée; Cycle saisonnier; Cycle circadien; Perturbation; Benthic fauna; Gulf of Guinea; Seasonal cycle; Diel cycle; Perturbation. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00325/43601/43985.pdf |
| |
|
| |
|
|
| Ayari, R.; Afli, A.. |
| This study is concerning benthic macrofauna of the bay of Tunis. It permitted to list 214 species distributed into 9.13 % molluscs, 16.8 % crustaceans, 63.5 % polychaeta, etc. Statistic analysis of the data defined four communauties and described them with some synthetic parameters. The heterogenous sediments are extended on a large area and present the higher specific richness (149 species). The communauty is dominated by 2 polychaeta, Glycera convoluta and Lumbrineris fragilis. The muddy sediments are limited to a small area in the center and characterized by a high abundance (4685 ind./m²). The leader species are the polychaeta Melinna palmata and the isopod Apseudes talpa. However, the sandy sediments wich are limitted to the harbor area of Rades,... |
| Tipo: Journal Contribution |
Palavras-chave: Biodiversity; Benthic fauna; Biodiversity. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/1113 |
| |
|
|
| Ayari-Kliti, R.; Afli, A.; Aissa, P.. |
| La faune benthique au large du golfe de Tunis a été étudiée par dragage à bord du navire océanographique HANNIBAL. Les bryozoaires présentent une diversité relativement élevée avec 41 familles et 76 espèces. Les cyclostomes comptent 9 espèces dont 5 espèces ((Annectocyma tubulosa (Busk, 1875), Frondipora verrucosa (Lamouroux, 1821), Eurystrotos compacta (Norman, 1866), Tubulipora liliacea (Pallas, 1766), Crisia denticulata (Lamarck, 1816)) sont nouvelles pour la faune tunisienne. Les cténostomes comptent seulement 3 espèces, dont une seule (Pherusella tubulosa (Ellis et Solander, 1786)) est rencontrée pour la première fois en Tunisie. Dans cette partie, l’inventaire des espèces est établi avec description morphologique en utilisant essentiellement des... |
| Tipo: Journal Contribution |
Palavras-chave: Biodiversity; Taxonomy; Benthic fauna; Biodiversity. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/5363 |
| |
|
|
| RODRIGUES,Carlos A. L.; RIBEIRO,Rannyele P.; SANTOS,Nayara B.; ALMEIDA,Zafira S.. |
| ABSTRACT The diversity and distribution of molluscs from the Amazon Coast of Maranhão State, Brazil, are poorly understood. The aim of this study was to investigate how molluscs in two mangrove creeks (Buenos Aires and Tronco) at the São Marcos Bay, coast of the Maranhão State, respond to spatial and temporal variations in the environment. Sampling was performed in the intertidal area along three zones established using a straight line transect of 100 m. Abiotic variables of water and sediment were measured at each creek. We found 5,912 specimens belonging to 23 species and 15 families of epifaunal and infaunal molluscs. The patterns of their distribution in the two creeks were different. Salinity, dissolved oxygen, and rainfall were the main variables... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Benthic fauna; Diversity; Littoraria; Melampus; Salt creek. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000400391 |
| |
|
| |
| Registros recuperados: 10 | |
|
|
|
