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
Comparing community structure on shells of the abalone Haliotis midae and adjacent rock: implications for biodiversity
Zeeman, Z.; Branch, G.M.; Farrell, D.; Maneveldt, G.W.; Robertson-Andersson, D.; Pillay, D. (2013). Comparing community structure on shells of the abalone Haliotis midae and adjacent rock: implications for biodiversity. Mar. Biol. (Berl.) 160(1): 107-117. http://dx.doi.org/10.1007/s00227-012-2067-6
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793
|  |
| Auteurs | | Top |
- Zeeman, Z.
- Branch, G.M.
- Farrell, D.
|
- Maneveldt, G.W.
- Robertson-Andersson, D.
- Pillay, D.
|
|
| Abstract |
This paper concerns the effects on biodiversity of depletion of the South African abalone Haliotis midae, which is a long-lived species with a large corrugated shell that provides a habitat for diverse benthic organisms. We compared community structure on H. midae shells with that on adjacent rock at three sites (Cape Point and Danger Point sites A and B) and at two different times of the year at one of these sites. Shells of H. midae consistently supported communities that were distinctly different from those on rock. In particular, three species of non-geniculate (encrusting) corallines, Titanoderma polycephalum, Mesophyllum engelhartii and Spongites discoideus, were all found either exclusively or predominantly on shells, whereas another non-geniculate coralline, Heydrichia woelkerlingii, occurred almost exclusively on adjacent rock. The primary rocky substratum, however, supported a higher number of species than abalone shells. Possible reasons for the differences between the two substrata include the relative age, microtopography and hardness of the substrata; the abundance of grazers on them; and the relative age of different zones of the abalone shell, which support communities at different stages of succession. Diversity on shells was lowest in zones that were either very young or very old, in keeping with the intermediate disturbance hypothesis. The distinctiveness of shell epibiota will increase ß diversity despite having a lower a diversity than that of adjacent rock. Decimation of H. midae by overfishing therefore has implications for biodiversity conservation. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
