Community structure and intertidal zonation of the macrobenthos on a macrotidal, ultra-dissipative sandy beach: summer-winter comparison
Degraer, S.; Mouton, I.; De Neve, L.; Vincx, M. (1999). Community structure and intertidal zonation of the macrobenthos on a macrotidal, ultra-dissipative sandy beach: summer-winter comparison, in: Degraer, S. Macrobenthos of shallow marine habitats (Belgian coast) and its use in coastal zone management = Het macrobenthos van ondiepe mariene habitats (de Belgische kust) en het belang voor het beheer van de kustzone. pp. 97-112 In: Degraer, S. (1999). Macrobenthos of shallow marine habitats (Belgian coast) and its use in coastal zone management = Het macrobenthos van ondiepe mariene habitats (de Belgische kust) en het belang voor het beheer van de kustzone. PhD Thesis. University of Gent, Zoology Institute, Marine Biology Section: Gent. IV, 158 pp., more Related to:Degraer, S.; Mouton, I.; De Neve, L.; Vincx, M. (1999). Community structure and intertidal zonation of the macrobenthos on a macrotidal, ultra-dissipative sandy beach: summer-winter comparison. Estuaries 22(3B): 742-752, more |  |
| Keywords | Composition > Community composition
Ecological zonation
ANE, Belgium, Belgian Coast [Marine Regions]
Marine/Coastal |
| Abstract | Community structure and intertidal zonation of the macrobenthos on a macrotidal, ultra-dissipative beach were studied. On the beach of De Panne, Belgium, six transects perpendicular to the waterline (each with five stations) were sampled in September 1995 (summer) and March 1996 (winter). The 30 stations were distributed across the continuum from mean high water spring to mean low water spring in order to sample the macrobenthos at different levels of elevation. The 39 species found had total densities up to 5,500 ind m-2 in summer and 1,400 ind m-2 in winter. The highest densities were found in the spionid polychaetes Scolelepis squamata and Spio filicornis, the nephtyid polychaete Nephtys cirrosa, the cirolanid isopod Eurydice pulchra, and the haustorid amphipods Bathyporeia spp. Based on species composition, specific densities, and biomass, two species associations were defined: a relatively species-poor, high intertidal species association, dominated by S. squamata and with an average density of 1,413 ind m-2 and biomass of 808 mg AFDW m-2 (summer); and a relatively species-rich, low intertidal species association, dominated by N. cirrosa, and with an average density of 104 ind m-2 and biomass of 162 mg AFDW m-2 in summer. For both seasons, the high intertidal species association was restricted in its intertidal distribution between the mean tidal and the mean high-water spring level, whereas the low intertidal species association was found from the mean tidal level to the subtidal. The latter showed good affinities with the subtidal N. cirrosa species association, occurring just offshore of De Panne beach, confirming the existence of a relationship between the low intertidal and subtidal macrobenthic species associations. Summer-winter comparison revealed a strong decrease in densities and biomass in the high intertidal zone during winter. Habitat continuity of the low intertidal zone with the subtidal allows subtidal organisms to repopulate the low intertidal zone. |
| Dataset | - Degraer, S., G. Van Hoey, W. Willems, J. Speybroeck & M. Vincx, 2003: MacroDat Belgium. Macrobenthic data from the Belgian part of the North Sea from 1976 onwards. Ghent University, Biology Department, Marine Biology Section, Belgium, more
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