Consulta: subjectFacets:"Marine nematodes"
Registros recuperados: 5
Data/hora: 16/06/2024 10:24:12

Carbon flows through meiobenthic nematodes in the Westerschelde Estuary
Provedor de dados: 27
Autores: Li, J.; Vincx, M.; Herman, P.M.J.
A time dynamic model was used to estimate carbon flows through nematodes in an intertidal benthic ecosystem in the Westerschelde Estuary, The Netherlands. The model calibrated the nematode biomass observed from March 1991 to February 1992. The forcing functions of the model included meiobenthos biomass, macrobenthos biomass, bacterial density, chlorophyll-a concentration, and other abiotic data such as temperature and day length. We estimate that the nematode population had a low level of standing stock 249 mg C m(-2), but a high level of carbon flow. It consumed 98 mg C m(-2) d(-1) and produced 22 mg C m(-2) d(-1). Defecation was 73 mg C m(-2) d(-1). Losses in respiration, excretion and natural death were only 3 mg C m(-2) d(-1). The annual P/B was 32 for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Degradation; Ecology; Marine nematodes; Meiobenthos; Respiration.
Ano: 1997
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7296

Linking estuarine nematodes to their suspected food: a case study from the Westerschelde estuary (south-west Netherlands)
Provedor de dados: 27
Autores: Moens, T.; Van Gansbeke, D.; Vincx, M.
The present study investigates correlations between abundances of nematodes (at the genus level) and benthic microalgae on an intertidal mudflat in the Westerschelde Estuary (south-west Netherlands), using both multi- and univariate methods. Two sample series, covering surface areas of 10 cm(2) (meioscale) and 1.25 cm(2) (microscale) per sample were analysed. Trophic type analysis indicated that an average of 31% of the nematode community were candidate grazers of microalgae. Multivariate data analysis indicated that only a limited part of the variation in the nematode data could be explained in relation to pigments. Total nematodes did not show any correlation with the pigment data. On the meioscale, the genera &lt;i&gt;Tripyloides&lt;/i&gt; and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecology; Marine nematodes; Meiobenthos; Populations; Populations; Scale; Scale; Bacteria.
Ano: 1999
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7332

Five new species of the family Ceramonematidae (Nematoda: order Chromadorida) from South Africa
Provedor de dados: 27
Autores: Furstenberg, J.P.; Vincx, M.
Three new Ceramonema species, one new Dasynemoides species and one new Pterygonema species are described from South Africa. Ceramonema algoensis sp. nov. is characterised by more than 300 annules and the elongated cephalic capsule with an elevated lip region; C. africana sp. nov. by an elongated cloacal annule and a long cephalic capsule; and C. kromensis sp. nov. by the absence of vascuolisation and a relatively short cephalic capsule. Dasynemoides tenuis sp. nov. can be distinguished from all other known species of the genus by its slender body (a=118) and the large number of body annules (690). Pterygonema papenkuili sp. nov. is characterised by the shape of the spicules, which have a spine-like structure, and a large and rectangular gubernaculum.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marine nematodes; Systematics; Ceramonema; Dasynemoides; Pterygonema.
Ano: 1993
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7254

A model of nematode dynamics in the Westerschelde Estuary
Provedor de dados: 27
Autores: Li, J.; Vincx, M.; Herman, P.M.J.
We developed a time dynamic model to investigate the temporal dynamics of nematode community in the brackish zone of the Westerschelde Estuary. The biomass of four nematode feeding groups observed from March 1991 to February 1992 is used to calibrate the model. Using environmental data as the input, the model predicts the temporal modification and interrelation of four nematode feeding groups. Nematodes achieve a dominant position in the community because of their lower loss rate (in respiration, excretion and natural death). Predators which are deposit-feeding macrobenthos control the variations of dominant nematodes, such as omnivores and non-selective deposit feeders. Food availability causes modification only for rare nematodes such as epigrowth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diatoms; Ecology; Food; Light; Marine nematodes; Meiobenthos; Population dynamics; Predation; Respiration; Temperature; Nematoda [Nematodes].
Ano: 1996
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7284

Population structure of Comesoma arenae Gerlach (Nematoda, Comesomatidae) in a Brazilian tropical tidalflat, Rio de Janeiro, Brazil
Provedor de dados: 104
Autores: Esteves,André Morgado; Maria,Tatiana Fabricio; Wandeness,Adriane Pereira.
The objective is to describe the population structure of Comesoma arenae Gerlach, 1956 during a one-year period. The area studied, Coroa Grande, is located in Sepetiba Bay, State of Rio de Janeiro, Brazil. Sampling was carried out monthly, from May 1998 through April 1999. Most individuals in the population were adults, of which non-ovigerous females were the most abundant. The species showed its highest population densities during the colder months.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marine nematodes; Meiofauna.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000400008