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Effects of dropstone-induced habitat heterogeneity on Arctic deep-sea benthos with special reference to nematode communities
- Source :
- Marine Biology Research. 9:229-245
- Publication Year :
- 2013
- Publisher :
- Informa UK Limited, 2013.
-
Abstract
- During an expedition to the deep-sea long-term observatory HAUSGARTEN in the eastern Fram Strait in summer 2003, the availability of a Remotely Operated Vehicle allowed a targeted sampling of surface sediments around a relatively large dropstone (0.9 m2) to determine suspected differences in community structure and dynamics of nematode assemblages in relation to the confined flow regime and patchy food availability in the immediate vicinity of the stone. The almost rectangular dropstone was about 150 cm in length, 60 cm in width, and up to 15 cm in height. Small-scale current measurements around the dropstone using a MAVS-3 acoustic current meter exhibited a rather complex pattern. A computational fluid dynamics simulation revealed areas of constantly flowing near-bottom currents as well as the generation of vortices in certain areas around the dropstone. Concentrations of biogenic compounds in the sediments surrounding the dropstone generally followed the complex flow pattern. The differences in...
- Subjects :
- 0106 biological sciences
010504 meteorology & atmospheric sciences
010604 marine biology & hydrobiology
Aquatic Science
Oceanography
Remotely operated vehicle
Dropstone
01 natural sciences
Deep sea
Spatial heterogeneity
Current (stream)
Current meter
Arctic
Benthos
14. Life underwater
Ecology, Evolution, Behavior and Systematics
Geology
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 17451019 and 17451000
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Marine Biology Research
- Accession number :
- edsair.doi...........729d212026929d77f5bc16de2d797692
- Full Text :
- https://doi.org/10.1080/17451000.2012.739694