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Benthic Biology Time-Series in the Deep Sea: Indicators of Change ArchiMer
Larkin, K.e.; Rhul, H.a.; Bagley, P.; Benn, A.; Bett, B.j.; Billett, D.s.m.; Boetius, A.; Chevaldonné, P.; Colaco, A.; Copley, J.; Danovaro, R.; Escobar-briones, E.; Glover, A.; Gooday, A.j.; Hugues, J.a.; Kalogeropoulou, V.; Kelly-gerreyn, B.a.; Kitazato, H.; Klages, M.; Lampadariou, N.; Lejeusne, C.; Perez, T.; Priede, I.g.; Rogers, A.; Sarradin, Pierre-marie; Sarrazin, Jozee; Soltwedel, T.; Soto, E.h.; Thatje, S.; Tselepides, A.; Tyler, P.a.; Van Den Hove, S.; Vanreusel, A.; Wenzhofer, F..
The responsiveness of benthic biological communities to climatic drivers and shifts makes them powerful indicators of biogeochemical and other environmental change in the oceans. In addition, benthic ecosystems have an economic value and are considered a vital marine resource. However deep-sea faunal dynamics and ecosystem functioning is not well defined. This has placed a higher priority in recent years on developing and sustaining long-term, time-series studies of benthic biodiversity, rate processes, and ecosystem change in deep-sea and extreme habitats. A few key long-term time-series sites exist across the global Ocean. Many of these sites are reviewed in this paper. However, much of the existing research is uncoordinated and the data collected are...
Tipo: Text
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00280/39112/37665.pdf
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Community structure and processes in the deep-sea benthos OMA
Vincx, M.; Vanreusel, A..
Tipo: Info:eu-repo/semantics/article
Ano: 1994 URL: http://www.vliz.be/imisdocs/publications/273124.pdf
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Deep, diverse and definitely different: unique attributes of the world's largest ecosystem ArchiMer
Ramirez-llodra, E.; Brandt, A.; Danovaro, R.; De Mol, B.; Escobar, E.; German, C. R.; Levin, L. A.; Arbizu, P. Martinez; Menot, Lenaick; Buhl-mortensen, P.; Narayanaswamy, B. E.; Smith, C. R.; Tittensor, D. P.; Tyler, P. A.; Vanreusel, A.; Vecchione, M..
The deep sea, the largest biome on Earth, has a series of characteristics that make this environment both distinct from other marine and land ecosystems and unique for the entire planet. This review describes these patterns and processes, from geological settings to biological processes, biodiversity and biogeographical patterns. It concludes with a brief discussion of current threats from anthropogenic activities to deep-sea habitats and their fauna. Investigations of deep-sea habitats and their fauna began in the late 19th century. In the intervening years, technological developments and stimulating discoveries have promoted deep-sea research and changed our way of understanding life on the planet. Nevertheless, the deep sea is still mostly unknown and...
Tipo: Text
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00017/12816/9753.pdf
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Different benthic size-compartments and their relationship to sediment chemistry in the deep Eurasian Arctic Ocean OMA
Kröncke, I.; Vanreusel, A.; Vincx, M.; Wollenburg, J.; Mackensen, A.; Liebezeit, G.; Behrends, B..
During the Arctic Expedition ARK VIII/3 (August to September 1991) with <i>RV Polarstern</i>, the macrofauna, meiofauna, Foraminifera, bacteria were sampled and sediment chemistry was determined at 13 stations along a transect from the Barents Sea slope across the deep Arctic Eurasian Basins towards the Lomonosov Ridge. Water depths ranged from 258 to 4427 m. In general, higher values for all benthic compartments as well as total organic carbon (TOC) and total hydrolysable amino acids (THAA) were recorded for the Barents Sea slope than for the deeper stations in the basins and the ridge slopes. The only significant correlation found was between macrofaunal abundance and depth. Bacterial and all faunal abundances as well as bacterial and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacteria; Foraminifera [hole bearers].
Ano: 2000 URL: http://www.vliz.be/imisdocs/publications/273306.pdf
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Ecologie van de vrijlevende mariene nematoden van de Voordelta (zuidelijke bocht van de Noordzee) OMA
Vanreusel, A..
This study forms part of a global research project, which aims to evaluate the effect of the Delta works on the ecosystem of the Dutch Delta. The Dutch Delta is the sublittoral region along the coast of the south of the Netherlands, from the Belgium border in the south to the Hoek van Holland in the north. Off shore, the area is arbitrary limited by the 10m depth line. From north to south, the Nieuwe Waterweg, the Haringvliet, Lake Grevelingen, the Eastern Scheldt and the Western Scheldt debouch into this part of the Southern Bight of the North Sea. As a result of the tidal currents and the thereon coupled transport of the sediments, a heterogenous pattern of banks and channels has evolved. The hydrodynamic regime and the bottom morphology have changed...
Tipo: Info:eu-repo/semantics/doctoralThesis
Ano: 1989 URL: http://www.vliz.be/imisdocs/publications/226581.pdf
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Ecology of free-living marine nematodes in the Voordelta (Southern Bight of the North Sea): 2. Habitat preferences of the dominant species OMA
Vanreusel, A..
The habitat preferences of the 50 dominant nematode species from the Voordelta (Southern Bight of the North Sea) were studied in relation to the sediment composition. For the stenotopic species the size of the silt fraction is often a limiting factor. Most eurytopic species are characterized by an affinity for silty or heterogeneous sediments. The habitat preferences of most of the species are similar to their distribution in other areas that have been studied. Where this is not so, factors other than the sediment composition (e.g. pollution) might be responsible for a shift in the distribution of species along the environmental gradients.
Tipo: Info:eu-repo/semantics/article
Ano: 1991 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7797
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Free-living marine nematodes from the Southern Bight of the North Sea: II. Notes on species of the Trefusiidae Gerlach OMA
Vincx, M.; Vanreusel, A..
Three species of the Trefusiidae Gerlach, 1966 are described from the Southern Bight of the North Sea.<i>Trefusia litoralis</i> (Allgén, 1932) is redescribed and information is given on the intraspecific variation.<i>Trefusia curvispiculosa</i> sp.nov. is characterized by its typically curved spicular apparatus, up to now not found in other <i>Trefusia</i> species.<i>Rhabdocoma riemanni</i> Jayasree & Warwick, 1977 is synonymized with <i>Rhabdocoma americana</i> Cobb, 1920 and that species is redescribed.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rhabdocoma americana; Rhabdocoma riemanni; Trefusia; Trefusia curvispiculosa; Trefusia litoralis; Trefusiidae.
Ano: 1989 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7109
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<i>Mesacanthion diplechma</i> (Nematoda: Thoracostomopsidae), a link to higher trophic levels? OMA
Hamerlynck, O.; Vanreusel, A..
The nematode Mesacanthion diplechma Southern is relatively rare in sediments of the Southern Bight of the North Sea and the Dutch Delta. Strangely, it is about the only free-living nematode found in the stomachs of the sand goby Pomatoschistus minutus Pallas from the same general area and even more peculiarly several hundred animals were found in sand gobies from the central part of the Oosterschelde. The large size of the nematode and its preference for the superficial sediment layers are probable causes for the first observation. For the second observation there is at present no explanation that can be substantiated. Some nematodes are known to aggregate on dead animals and possibly the Oosterschelde gobies may have been feeding on such an aggregation.
Tipo: Info:eu-repo/semantics/article
Ano: 1993 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7256
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Meiobenthos of the central Arctic Ocean with special emphasis on the nematode community structure OMA
Vanreusel, A.; Clough, L.M.; Jacobsen, K.; Ambrose, W.; Jivaluk, J.; Ryheul, V.; Herman, R.; Vincx, M..
We investigated the abundance of the meiobenthos and the biomass and community structure of the nematodes in the central Arctic Ocean along two separate transects during 1991 and 1994. Meiobenthos abundances ranged from < 100 to 600 individuals per 10 cm², in the same order of magnitude as in other oligotrophic areas of the world's deep ocean. Nematodes were the numerically dominant meiofaunal group at every station. Nematode biomass ranged from < 1 to 48 µg dry weight per 10 cm². A combination of water depth and latitude explained 55% of the variability among stations in nematode biomass and 67% of the variability of total abundance, implying that both vertical and advective fluxes are important sources of food to the meiofaunal communities. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Community composition; Marine invertebrates; Meiobenthos; Spatial variations; Zoobenthos; Monhystera; Nematoda [Nematodes]; Pitcairn I..
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7425
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Nematode biomass spectra at two abyssal sites in the NE Atlantic with a contrasting food supply OMA
Vanreusel, A.; Vincx, M.; Bett, B.; Rice, A..
Abundance and biomass sizes spectra of nematodes have been investigated at two contrasting abyssal sites in the NE Atlantic. The northern site is situated on the Porcupine Abyssal Plain where there is evidence for a high seasonal input of organic matter derived from the overlying water column. The southern site is the oligotrophic station of the French EUMELI programme off Mauritania and is characterized by low primary productivity in the overlying water column and consequently by a lower organic input to the deep-sea floor. Low nematode density and total biomass in the surficial centimetre of the sediment at the EUMELI site (89 ind/10 cm<sup>²</sup>, 8.52 µg wwt/10 cm<sup>²</sup>), in contrast to the PAP site (254 ind/10...
Tipo: Info:eu-repo/semantics/article
Ano: 1995 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7795
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Nematodes as indicators pollution: a case study from the Swartkops River system, South Africa OMA
Gyedu-Ababio, T.; Furstenberg, J.P.; Baird, D.J.; Vanreusel, A..
Nematodes from the sediments of the Swartkops estuary in Port Elizabeth, South Africa were investigated at 10 selected sites along a salinity gradient in the subtidal region at neap tide. The relation between nematode density, genera, community structure and environmental parameters including concentrations of seven heavy metals, Mn, Ti, Cr, Pb, Fe, Sn and Zn in the sediment were investigated. The nematode community structure was significantly influenced by the chlorophyll a concentration and sediment particle-size distribution. The number of genera had significant negative correlation with chlorophyll a and two heavy metals, Fe and Zn in the sediment. The habitat preferences of the genera were also assessed. A combination of the Shannon-Wiener Diversity...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Check lists; Density; Diversity; Ecology; Meiobenthos; Pollution; Sediment; Sediments; Nematoda [Nematodes].
Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7328
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Occurrence of Chromadorita regabi sp nov (Nematoda: Adenophorea), a nematode egg predator of Alvinocaris muricola (Crustacea: Decapoda: Caridea: Alvinocarididae) from a deep cold seep area of the Gulf of Guinea ArchiMer
Baldrighi, Elisa; Vanreusel, A.; Zeppilli, Daniela; Sandulli, R.; Segonzac, Michel.
Several individuals belonging to a new species of the genus Chromadorita (Nematoda: Adenophorea) were collected in a cold-seep area in the Gulf of Guinea during two French cruises: BIOZAIRE 2 (2001) and BIOZAIRE 3 (2003-2004) on board the R/V L'Atalante. In this area, rich chemosynthetic benthic communities have been discovered at 3150 m depth in the large pockmark field named Regab. Chromadorita regabi sp. nov. was found among the eggs in ovigerous specimens of the shrimp Alvinocaris muricola. The combination of long size (1500-2200 mu m), nine strong preanal papillae and relatively small dorsal tooth with weak musculature distinguishes this species from all known congeneric ones. An identification key to all known species of Chromadorita is provided.
Tipo: Text Palavras-chave: Chromadorita regabi; Cold seep; Gulf of Guinea; Alvinocaris muricola.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00454/56599/58271.pdf
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On the vertical distribution of metazoan meiofauna in shelf break and upper slope habitats of the NE Atlantic OMA
Vanreusel, A.; Vincx, M.; Schram, D.; Van Gansbeke, D..
The metazoan meiofauna of nine stations in shelf break and upper slope areas (70 to 1500 m water depth) of the N.E. Atlantic were investigated in order to assess which environmental factors are important in the control of densities and sediment profiles. Total meiofaunal densities (ranging between 368 and 1523 ind/10 cm<sup>2</sup> were correlated with bacterial densities, an important food source for meiofauna. However, considering sediment vertical distribution profiles, the relative importance of both food and oxygen on the meiofauna became obvious. A combination of both bacterial densities and oxygen supply could explain about 95% of the variability in the vertical profiles of the meiofauna densities. Meiofauna numbers increase in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Meiofauna; Vertical profiles.
Ano: 1995 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7279
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Sampler bias in the quantitative study of deep-sea meiobenthos OMA
Bett, B.; Vanreusel, A.; Vincx, M.; Soltwedel, T.; Pfannkuche, O.; Lambshead, P.J.D.; Gooday, A.J.; Ferrero, T.; Dinet, A..
The influence of sampler type on quantitative estimates of deep-sea meiobenthos is examined by an indirect statistical comparison of box corer and multiple corer samples collected throughout the northeast Atlantic, and by a direct comparison of contemporaneously collected multiple corer and box corer samples from a single abyssal location. The data strongly support the suggestion that the greater down-wash/bow wave associated with box corers results in displacement of surface sediments and any superficial detritus layer together with their associated fauna. Total metazoan meiobenthos density estimates from box corer samples are about half those from corresponding multiple...
Tipo: Info:eu-repo/semantics/article
Ano: 1994 URL: http://www.vliz.be/imisdocs/publications/273316.pdf
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Structural analysis of the meiobenthos communities of the shelf break area in two stations of the Gulf of Biscay (N.E. Atlantic) OMA
Vanreusel, A.; Vincx, M.; Van Gansbeke, D.; Gijselinck, W..
In a first attempt to obtain information in order to characterize the shelf break zone, the meiobenthos communities of two fine sandy stations of 190 m and 325 m depth in the Gulf of Biscay off the Spanish coast were investigated in relation to some environmental characteristics (sediment composition, chlorophyll <i>a</i> content, redox values). The nematodes, which are the dominant taxon, were studied in detail. Their communities are relatively poor in densities (840 and 779 individuals per 10cm<i>2</i> and biomass (0.137 and 0.334mg dwt/10cm<sup>2</sup>) compared to those of shallow coastal areas. The dominance of small species (mean individual biomass: 0.169 and 0.423 µg dwt) and a low total biomass can be related to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abundance Biomass Deep sea Ecology Meiobenthos Nematoda [Nematodes] ASW; Puerto Rico Trench.
Ano: 1992 URL: http://www.vliz.be/imisdocs/publications/242558.pdf
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Temporal change in deep-sea benthic ecosystems: a review of the evidence from recent time-series studies ArchiMer
Glover, A. G.; Gooday, A. J.; Bailey, D. M.; Billett, D. S. M.; Chevaldonne, P.; Colaco, Ana; Copley, J.; Cuvelier, Daphne; Desbruyeres, Daniel; Kalogeropoulou, V.; Klages, M.; Lampadariou, N.; Lejeusne, C.; Mestre, Nelia; Paterson, G. L. J.; Perez, T.; Ruhl, H.; Sarrazin, Jozee; Soltwedel, T.; Soto, E. H.; Thatje, S.; Tselepides, A.; Van Gaever, S.; Vanreusel, A..
Societal concerns over the potential impacts of recent global change have prompted renewed interest in the long term ecological monitoring of large ecosystems The deep sea is the largest ecosystem on the planet the least accessible and perhaps the least understood Nevertheless deep sea data collected over the last few decades are now being synthesised with a view to both measuring global change and predicting the future impacts of further rises in atmospheric carbon dioxide concentrations For many years it was assumed by many that the deep sea is a stable habitat buffered from short term changes in the atmosphere or upper ocean However recent studies suggest that deep seafloor ecosystems may respond relatively quickly to seasonal inter annual and decadal...
Tipo: Text Palavras-chave: Mid atlantic ridge; East pacific rise; Gulf of Mexico; Hydrothermal vent communities; Long term change; Portuguese continental margin; Abyssal northeast pacific; Azores triple junction; Cold seep ecosystems; Dark submarine caves.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00030/14120/12727.pdf
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The metazoan meiobenthos along the continental slope of the Goban Spur (NE Atlantic) OMA
Vanaverbeke, J.; Soetaert, K.; Heip, C.H.R.; Vanreusel, A..
The metazoan meiobenthos along the continental slope of the Goban Spur (NE Atlantic) was studied in the framework of the OMEX-programme (EC-MAST II). Meiobenthic densities, the vertical distribution of the meiobenthos in the sediment, and the biomass and generic composition of the dominant group, the nematodes, were investigated at different water depths. The meiobenthic communities along the depth gradient of the continental slope followed the usual trends: the communities were dominated by nematodes, and meiobenthic densities, total nematode biomass, and mean individual nematode weight decreased with increasing water depth. The shelf station had significantly higher densities, nematode biomass and mean individual weight than the deeper stations. The...
Tipo: Info:eu-repo/semantics/article
Ano: 1997 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=5650
Registros recuperados: 17
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