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| Moens, T.; Vierstraete, A.; Vanhove, S.; Verbeke, M.; Vincx, M.. |
| Our current understanding of meiofaunal respiration rates, and especially of the way they are influenced by changing abiotic factors, is still far from complete. Meiofaunal respiration is traditionally measured using Cartesian divers or related manometric techniques, but these are extremely time-consuming and labour-consuming. We have evaluated the use of Strathkelvin polarographic electrode model 1302 and the O<sub>2</sub> monitor model 781 in determining the O<sub>2</sub> consumption of meiofaunal animals. Respiration rates obtained in this way of the terrestrial nematode <i>Caenorhabditis elegans</i> compared well with results obtained from Cartesian diver respirometry. Experiments with 3 estuarine nematode species... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1996 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3049 |
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| Vanhove, S.; Beghyn, M.; Van Gansbeke, D.; Bullough, L.W.; Vincx, M.. |
| Under the typical high-latitude conditions of temperature, productivity and settlement of chlorophyll and phaeophytin to the sediment, many benthic organisms in the Antarctic show strong seasonal variation. Although meiofauna comprise an important component of the southpolar benthic ecosystem, our knowledge of them is limited. The metazoan meiofauna and the surrounding sediments were studied fortnightly for 18 mo in a shallow bay at Signy Island (Factory Cove, South Orkneys, Antarctica) to test whether and how the temporal variability of the environment influenced meiobenthos dynamics. By examination of the distribution of the abundance and biomass of the total community, the density of higher taxonomic groups, and of individual dominant nematode genera... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Benthos; Biomass; Population density; Seasonal variations; Sediment analysis; Trophic relationships; Copepoda [copepods]; Nematoda [Nematodes]; Ostracoda. |
| Ano: 2000 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=6138 |
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| Vanhove, S.; Arntz, W.E.; Vincx, M.. |
| Nothing is known about the structure of free-living marine nematode communities in the high Antarctic. Our attempt at surveying this numerically most abundant meiobenthic taxon along the continental shelf and slope (200 to 2000 m) furnished information on generic, trophic and age composition in 2 regions in the Weddell Sea (Kapp Norvegia, 6 stations, 71-72°S, 12-13°W; Halley Bay, 11 stations, 74-75°S, 25-29°W). A total of 7300 nematode identifications to generic level were analyzed by means of a variety of statistical techniques. The spatial structure indicated the existence of 4 major nematode genus associations colonizing the upper slope, downslope, Halley shelf and a mixed habitat consisting of shelf break and Kapp Norvegia shelf. Dominated by genera... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abundance Continental margins Dominant species Meiobenthos Sediment analysis Acantholaimus Daptonema Dichromadora Leptolaimus Microlaimus Molgolaimus Monhystera Nematoda [Nematodes] Sabatieria PSW; Weddell Sea. |
| Ano: 1999 |
URL: http://www.vliz.be/imisdocs/publications/273307.pdf |
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| Vanhove, S.; Wittoeck, J.; Desmet, G.; Van den Berghe, B.; Herman, R.; Bak, R.P.M.; Nieuwland, G.; Vosjan, J.H.; Boldrin, A.; Rabitti, S.; Vincx, M.. |
| The metazoan meiofauna in the region off Kapp Norvegia, Antarctica (Weddell Sea: 71°S, 12°W), was collected from depths between 211 and 2080m. Total meiofaunal abundance ranged from 815 to 5122 ind. per 10 cm² and total biomass from 126 to 966 µg dwt per 10 cm². Nematodes dominated the samples (range 83 to 97%) followed by harpacticoid copepods, polychaetes and kinorhynchs. A typical skewed length frequency distribution was obtained with most nematodes in the 0.4 to 0.6 mm size-class. The meiofauna communities were primarily influenced by bathymetric depth and food availability (e.g. organic matter and microbiota), which in turn are suggested to be directly related to phytoplankton blooms and associated sedimentation pulses. Standing stock and distribution... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1995 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2653 |
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| Vanhove, S.; Wittoeck, J.; Beghyn, M.; Van Gansbeke, D.; Van Kenhove, A.; Coomans, A.; Vincx, M.. |
| To date meiobenthic research remained a big white spot in the systematic-ecological work on Antarctic zoobenthos. Therefore the relative importance of the meiofauna (organisms within the size range of 38-1000µm) in the Antarctic benthic community has been assessed by a combined field ecology and experimental approach. This was done in two contrasting conditions, e.g. the deep sea and low subtidal, where as to the depth of the water column the benthic characteristics were, respectively, indirectly or directly related to primary production. Deep-sea samples were collected at Kapp Norvegia and Halley Bay (Weddell Sea) during the EPOS-leg 3-campaign (summer 1989) with the RV Polarstern at depths between 200 and 2000 m. Samples for the ecological-experimental... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecosystems Meiobenthos PS; Antarctic Ocean PS; Antarctica. |
| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8938 |
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| Vanhove, S.. |
| The size spectra and biomass of the nematode assemblages in the sediments of <i>Avicennia marina, Bruguiera gymnorrhiza, Ceriops tagal</i> and <i>Sonneratia alba</i> at Gazi Bay (Kenya), are described. Weighted mean length (resp. dry weight) of the nematodes varies from 0.543 to 1.367mm (resp. 0.10 to 0.19µg) and differs considerably from geometric and median values. Nematodes become longer (around <i>Avicennia</i> and <i>Sonneratia</i>) or remain similar in length (around <i>Bruguiera</i> and <i>Ceriops</i>) with increasing depth into the sediment. Body elongation is suggested to be an adaptation to low oxygen and food supply, which are under the impact of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomass Size Nematoda [Nematodes] ISW; Kenya; Gazi Bay. |
| Ano: 1993 |
URL: http://www.vliz.be/imisdocs/publications/243963.pdf |
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| Vanhove, S.; Lee, H.J.; Beghyn, M.; Van Gansbeke, D.; Brockington, S.; Vincx, M.. |
| The metazoan meiobenthos was investigated in an Antarctic coastal sediment (Factory Cove, Signy Island, Antarctica). The fine sands contained much higher abundances compared to major sublittoral sediments worldwide. Classified second after Narragansett Bay (North Atlantic) they reached numbers of 13x10<sup>6</sup> ind m<sup>-2</sup>. The meiofauna was highly abundant in the surface layers, but densities decreased sharply below 2cm. Vertical profiles mirrored steep gradients of microbiota, chloropigments and organic matter and were coincident with chemical stratification. Spatial patchiness manifested especially in the surface layer. Nematodes dominated (up to 90%), and <i>Aponema, Chromadorita, Diplolaimella, Daptonema,... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1998 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=323 |
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