Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Quantitative distribution of the meiobenthos in the Large Aral Sea in 2003 and 2004
In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963; e-ISSN 1879-1573, meer
|  |
| Trefwoord |
|
| Author keywords |
Aral Sea; Large Aral; Benthos; Meiobenthos; Meiofauna; Hypersaline biotopes |
| Abstract |
Living meiobenthos samples were collected in the Large Aral Sea in 2003 and 2004 from water depths ranging from 0 to 39 m. The near-bottom water salinity at the sampling sites varied from 88 to 109‰. Meiobenthos, which occurred at all stations, consisted of nematodes, harpacticoides, ostracods and turbellarians. Unicellular organisms (foraminifera) were also present. The density of meiobenthos showed a significant spatial variation. Nematodes predominated in most samples. The maximal abundance of free-living nematodes (1440 specimens/10 cm2) was recorded in 2003 at a depth of 10 m, at a site with 88.9‰ salinity and a water temperature of 13.6 °C. The maximal abundance of nematodes in 2004 was 750 specimens/10 cm2 at about the same depth and salinity, but with a considerably higher water temperature (24.5 °C). The highest value for the harpacticoid copepods density was 116 specimens/10 cm2 at 1 m depth. The high spatial meiobenthos variation is to a considerable extent related to the sediment characteristics at the sampling stations. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
