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'.
Spatial and temporal variations in deep-sea meiofauna assemblages in the Marginal Ice Zone of the Arctic Ocean
Hoste, E.; Vanhove, S.; Schewe, I.; Soltwedel, T.; Vanreusel, A. (2007). Spatial and temporal variations in deep-sea meiofauna assemblages in the Marginal Ice Zone of the Arctic Ocean. Deep-Sea Res., Part 1, Oceanogr. Res. Pap. 54(1): 109-129. dx.doi.org/10.1016/j.dsr.2006.09.007
In: Deep-Sea Research, Part I. Oceanographic Research Papers. Elsevier: Oxford. ISSN 0967-0637; e-ISSN 1879-0119, meer
|  |
| Trefwoord |
|
| Author keywords |
Arctic; Greenland Sea; deep water; benthos; meiofauna; abundances |
| Auteurs | | Top |
- Hoste, E., meer
- Vanhove, S., meer
- Schewe, I.
|
- Soltwedel, T.
- Vanreusel, A., meer
|
|
| Abstract |
In order to understand the response of the deep-sea meiobenthos to a highly varying, ice-edge-related input of phytodetritus, we investigated the abundance and composition of the meiobenthos at the arctic long-term deep-sea station HAUSGARTEN (79°N, 4°E) along a bathymetric transect (1200-5500 m water depth) over 5 consecutive years (from 2000 to 2004) in relation to changes in environmental conditions. Results showed high sediment-bound pigment concentrations (chlorophyll a and degradation products) ranging from 4.5 to 41.6 µg/cm3, and coinciding high meiobenthic densities ranging from 149 +/- 3 to 3409 +/- 525 ind/10cm2. Nematodes dominated the metazoan meiofaunal communities at every depth and time (85-99% of total meiofauna abundance), followed by harpacticoid copepods (0-4.6% of total meiofauna abundance). The expected pattern of gradually decreasing meiobenthic densities with increasing water depth was not confirmed. Instead, the bathymetric transect could be subdivided into a shallow area with equally high nematode and copepod densities from 1000 to 2000 in water depth (means: 2259 +/- 157 Nematoda/10cm2, and 50 +/- 4 Copepoda/10cm2), and a deeper area from 3000 to 5500 m water depth with similar low nematode and copepod densities (means: 595 +/- 52 Nematoda/10cm2, and 11 +/- 2 Copepoda/10cm2). Depth-related investigations on the meiobenthos at the HAUSGARTEN site showed a significant correlation between meiobenthos densities, microbial exo-enzymatic activity (esterase turnover) and phytodetrital food availability (chlorophyll a and phaeophytines). In time-series investigations, our data showed inter-annual variations in meiofauna abundance. However, no consistent relationship between nematode and copepod densities, and measures for organic matter input were found. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
