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Zonation of spiders (Araneae) and carabid beetles (Coleoptera: Carabidae) in island salt marshes at the North Sea coast
Finch, O.-D.; Krummen, H.; Plaisier, F.; Schultz, W. (2007). Zonation of spiders (Araneae) and carabid beetles (Coleoptera: Carabidae) in island salt marshes at the North Sea coast. Wetlands Ecol. Manag. 15(3): 207-228. https://dx.doi.org/10.1007/s11273-006-9024-4
In: Wetlands Ecology and Management. Springer: Den Haag; Dordrecht; Hingham, MA; Amsterdam. ISSN 0923-4861; e-ISSN 1572-9834
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| Trefwoorden |
Biodiversity
Araneae [WoRMS]; Arthropoda [WoRMS]; Carabidae Latreille, 1802 [WoRMS]
Marien/Kust |
| Author keywords |
Arthropod communities, Sea level rise, Spatial gradient |
| Auteurs | | Top |
- Finch, O.-D.
- Krummen, H.
- Plaisier, F.
- Schultz, W.
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| Abstract |
The specific communities of spiders and carabid beetles of island salt marsh habitats of the East Frisian Island chain at the German North Sea coast were investigated. During the vegetation periods of 1997 and 1998 three pitfall trapping transects were installed on the islands of Borkum and Wangerooge. Within the salt marshes, transects extended from 0 m to 175 m. Elevation gradients varied between 10 cm and 232 cm above MHT (mean high tide). On Borkum, 35 traps were exposed in two transects, on Wangerooge 25 traps were placed in one transect. Three to five elevations above MHT were investigated per transect, each one with five traps. Highest species numbers were recorded in the higher elevated salt marshes. In contrast, highest activity values were noticed in the medium elevated salt marshes. Within both groups, spiders and carabids, four communities were distinguished by indirect gradient analysis. Indicator species were assigned to the different communities that were mainly assorted to different elevations of the salt marshes. Thus, the communities of both taxa corresponded well to the vegetational formations. The importance of sea level rise for structuring the communities of salt marsh arthropods is discussed. Overall, still great uncertainties exist on how arthropod communities and salt marshes themselves will develop. |
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