Do physical and chemical factors structure the macrobenthic community at a continental slope in the NE Atlantic?
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Macrofauna density, biomass and community structure together with several characteristics of the sediment and flow velocity were estimated in May 1994 and August 1995 at seven stations ranging from 208 m to 4470 m water depth along the OMEX-transect in the Goban Spur area (NE Atlantic). In 1994 four additional stations were sampled at a parallel transect about 40 km SSE of the OMEX-transect. In 1995 two additional transects were sampled, one in the Porcupine Seabight ∼ 100 km NNW and one along the slope at ∼ 3500 m water depth situated ∼ 200 km SSE of the OMEX-transect. An overall trend in decrease in density and biomass with increasing water depth was found, but no depth related pattern in mean individual weight could be observed. Mean individual weight, however, did show a negative relationship with flow velocities. Correspondence-analyses and single linkage clustering of the community structure showed three more or less depth related clusters, representing a shelf community, an upper-slope and a lower-slope community. These clusters coincided with differences in grain-size, % organic C and total N within the sediment and differences in flow velocities. However, some of the stations at similar depths were not clustered together. Grain-size did not differ at stations with similar depth, but the % of C and N and flow velocities could differ markedly. Stations at similar depth, but with different physical and/or chemical conditions showed differences in density, biomass, mean individual weight and in macrobenthic community structure. More filter-feeding taxa were observed at stations with higher flow velocities, whereas more subsurface deposit-feeders were found at stations with higher sedimentation rates. Thus, besides the effects of water depth on macrobenthic community structure, other physical and chemical factors (such as flow velocities and organic matter supply) can be important structuring factors as well.
- Billett, D. S. M., R. S. Lampitt, A. L. Rice & R. F. C. Mantoura, 1983. Seasonal sedimentation of phytoplankton to the deep sea benthos. Nature 302: 520–522. CrossRef
- Blake, J. A. & J. F. Grassle, 1994. Benthic community structure on the U.S. South Atlantic slope off the Carolinas: Spatial heterogeneity in a current-dominated system. Deep-Sea Res. II, 41: 835–874. CrossRef
- Carney, R. S., R. L. Haedrich & G. T. Rowe, 1983. Zonation of fauna in the deep sea. In G. T. Rowe (ed.), Deep-sea Biology. The Sea, Vol. 8, John Wiley & Sons, New York: 371–398.
- Creutzberg, F., P. Wapenaar, G. Duineveld & N. Lopez Lopez, 1984. Distribution and density of the benthic fauna in the southern North Sea in relation to bottom characteristics and hydrographic conditions. Rapp. P.-v. Réun. Cons. int. Explor. Mer 183: 101–110.
- DeMaster, D. J., R. H. Pope, L. A. Levin & N. E. Blair, 1994. Biological mixing intensity and rates of organic carbon accumulation in North Carolina slope sediments. Deep-Sea Res. II, 41: 735–753. CrossRef
- Diaz, R. J., G. R. Cutter & D. C. Rhoads, 1994. The importance of bioturbation to continental slope sediment structure and benthic processes off Cape Hatteras, North Carolina. Deep-Sea Res. II, 41: 719–734. CrossRef
- Duineveld, G. C. A., M. S. S. Lavaleye, E. M. Berghuis, P. A. W. J. de Wilde, J. van der Weele, A. Kok, S. D. Batten & J. W. de Leeuw, 1997. Patterns of benthic fauna and benthic respiration on the Celtic continental margin in relation to the distribution of phytodetritus. Int. Rev. ges. Hydrobiol. 82: 395–424.
- Flach, E. & C. Heip, 1996a. Vertical distribution of macrozoobenthos along the continental slope in the Goban Spur area (NE Atlantic). Mar. Ecol. Prog. Ser. 141: 55–66.
- Flach, E. & C. Heip, 1996b. Seasonal variations in faunal distribution and activity across the continental slope of the Goban Spur area (NE Atlantic). J. Sea Res. 36: 203–215. CrossRef
- Flach E., M. Lavaleye, H. de Stigter & L. Thomsen, in press. Feeding types of the benthic community and particle transport across the continental slope of the Goban Spur. Prog. Oceanog. (Special Issue OMEX).
- Gooday, A. J. & C. M. Turley, 1990. Responses by benthic organisms to inputs of organic material to the ocean floor: a review. Phil. Trans. r. Soc., Lond. A 331: 119–138.
- Grebmeier, J. M., C. P. McRoy & H. M. Feder, 1988. Pelagicbenthic coupling on the shelf of the northern Bering and Chukchi Sea I. Food supply source and benthic biomass. Mar. Ecol. Prog. Ser. 48: 57–67.
- Helder, W., L. Lohse & E. Epping, 1996. Sediment-water exchange and early diagenesis. OMEX, Final Report.
- Huthnance, J. M., 1995. Circulation, exchange and water masses at the ocean margin: the role of physical processes at the shelf edge. Prog. Oceanog. 35: 353–431. CrossRef
- Jumars, P. A., L. M. Mayer, J. W. Deming, J. A. Baross & R. A. Wheatcroft, 1990. Deep-sea deposit-feeding strategies suggested by environmental and feeding constraints. Phil. Trans. r. Soc., Lond. A, Math. Phys. Sci. 331: 85–101.
- Jumars P. A. & E. D. Gallagher, 1982. Deep-sea community structure: Three playes on the benthic proscenium. In W. G. Ernst & J. G. Morin (eds), The environment of the deep sea. Prentice Hall, Inc., New Jersey: 217–255.
- Lampitt, R. S., 1985. Evidence for the seasonal deposition of detritus to the deep-sea floor and its subsequent resuspension. Deep-Sea Res. 32: 885–897. CrossRef
- Nieuwenhuize, J., Y. E. M. Maas & J. J. Middelburg, 1994. Rapid analysis of organic carbon and nitrogen in particulate materials. Marine Cemistry 45: 217–224. CrossRef
- Rex, M. A., 1981. Community structure in the deep-sea benthos. Ann. Rev. Ecol. Syst. 12: 331–353. CrossRef
- Rice, D. L. & D. C. Rhoads, 1989. Early diagenesis of organic matter and the nutricial value of the sediment. In G. R. Lopez, G. L. Taghon, J. S. Levinton (eds), Ecology of marine deposit feeding. Springer-Verlag, New York: 59–79.
- Rosenberg, R., 1995. Benthic marine fauna structured by hydrodynamic processes and food availability. Neth. J. Sea Res. 34: 303–317. CrossRef
- Rowe, G. T., 1983. Biomass and production of deep-sea macrobenthos. In G. T. Rowe (ed.), Deep-sea Biology. The Sea, Vol. 8, John Wiley & Sons, New York: 97–121.
- Schaff, T., L. Levin, N. Blair, D. DeMaster, R. Pope & S. Boehme, 1992. Spatial heterogeneity of benthos on the Carolina continental slope: large (100 km)-scale variation. Mar. Ecol. Prog. Ser. 88: 143–160.
- Sibuet, M., C. E. Lambert, R. Chesselet & L. Laubier, 1989. Density of the major size groups of benthic fauna and trophic input in deep basins of the Atlantic Ocean. J. Mar. Res. 47: 851–867. CrossRef
- Soetaert, K., P. M. J. Herman, J. J. Middelburg, E. Epping & W. Helder, 1995. Applying the coupled diagenetic model to OMEX sediments-preliminary results. OMEX Second Annual Report, part C: 63–64.
- Soetaert, K., P. M. J. Herman, J. J. Middelburg & C. Heip, in press. Assessing organic matter mineralization, degradability and mixing rate in an ocean margin sediment (Northeast Atlantic) by diagenetic modelling. J. Mar. Res. 56.
- Taghon, G. L. & R. R. Greene, 1992. Utilization of deposited and suspended particulate matter by benthic ‘interface’ feeders. Limnol. Oceanogr. 37: 1370–1391. CrossRef
- Thomsen, L., G. Graf, V. Martens & E. Steen, 1994. An instrument for sampling water from the benthic boundary layer. Cont. Shelf Res. 14: 871–882. CrossRef
- Thomsen, L. & Tj. C. E. van Weering, in press. Spatial and temporal variability of particulate matter in the benthic boundary layer at the North East Atlantic Continental margin (Celtic Sea). Progr. Oceanog. (Special Issue OMEX).
- VanWeering, Tj. C. E., N. McCave, I. Hall & H. de Stigter, in press. Recent sedimentation in the OMEX study area: west European Margin, 47°- 50° N. Progr. Oceanog. (Special Issue OMEX).
- Do physical and chemical factors structure the macrobenthic community at a continental slope in the NE Atlantic?
Volume 375-376, Issue 0 , pp 265-285
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- community structure
- continental slope
- flow velocity
- NE Atlantic
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