Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Depth-related changes in the Arctic epibenthic megafaunal assemblages of Kangerdlugssuaq, East Greenland
Jones, D.O.B.; Bett, B.J.; Tyler, P.A. (2007). Depth-related changes in the Arctic epibenthic megafaunal assemblages of Kangerdlugssuaq, East Greenland. Mar. Biol. Res. 3(4): 191-204. http://dx.doi.org/10.1080/17451000701455287
In: Marine Biology Research. Taylor & Francis: Oslo; Basingstoke. ISSN 1745-1000; e-ISSN 1745-1019
|  |
| Trefwoorden |
Ecology
Greenland
Properties > Physical properties > Density
Species diversity
Greenland [Marine Regions]
Marien/Kust |
| Author keywords |
arctic; density; diversity; ecology; Greenland; photographic |
| Auteurs | | Top |
- Jones, D.O.B.
- Bett, B.J.
- Tyler, P.A.
|
|
|
| Abstract |
The effects of depth-related differences in environmental factors (pressure, hydrography, habitat and disturbance) on the benthic megafauna at the mouth of Kangerdlugssuaq Fjord in Arctic Greenland were investigated using a towed camera platform and autonomous underwater vehicle photographs. Large reductions in faunal density (60,132 to 1881 individuals ha-1) and increases in diversity (H' =0.93-2.54), through increases in richness (ES(220)=7.6-18.8) and reductions in dominance (Berger-Parker index=0.77-0.38) were found between 270 and 720 m water depth. Assemblages were separated into distinct shallow, intermediate and deep faunas by multivariate community analysis. In the shallower sites there were high levels of iceberg disturbance, directly reducing diversity as well as creating a complex, patchy environment inhabited by high densities of mobile suspension-feeding epifauna. In the deeper areas there was small-scale disturbance from the deposition of drop stones, but at a relatively low frequency and magnitude, which allowed increased species diversity. Proportions of deposit-feeding epifaunal and infaunal taxa rose with depth, as indicated by an increase with depth in faunal traces. Decreases in faunal density probably resulted from decreased food supply with depth. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
