Regulation of species richness by advection and richness-dependent processes in a coastal fish community
Lekve, K.; Stenseth, N.C.; Gjøsaeter, J. (2003). Regulation of species richness by advection and richness-dependent processes in a coastal fish community, in: Jones, M.B. et al. Migrations and dispersal of marine organisms: Proceedings of the 37th European Marine Biology Symposium held in Reykjavik, Iceland, 5-9 August 2002. Developments in Hydrobiology, 174: pp. 93-102. https://dx.doi.org/10.1007/978-94-017-2276-6_11
In: Jones, M.B. et al. (2003). Migrations and dispersal of marine organisms: Proceedings of the 37th European Marine Biology Symposium held in Reykjavik, Iceland, 5-9 August 2002. Reprinted from Hydrobiologia 503. European Marine Biology Symposia, 37. Developments in Hydrobiology, 174. ISBN 978-90-481-6480-6; e-ISBN 978-94-017-2276-6. XII, 262 pp. https://dx.doi.org/10.1007/978-94-017-2276-6, meer
In: European Marine Biology Symposia., meer
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| Beschikbaar in | Auteurs |
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Documenttype: Congresbijdrage
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| Trefwoorden |
Biodiversity
Composition > Community composition
Dispersion
ANE, Skagerrak [Marine Regions]
Marien/Kust |
| Auteurs | | Top |
- Lekve, K.
- Stenseth, N.C.
- Gjøsaeter, J.
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| Abstract |
In coastal fish communities, both top-down and bottom-up processes influence the dynamics of individual species. Here, we demonstrate how advective processes in the coastal zone of the Skagerrak basin affect the main predator, the cod (Gadus morhua), as a bottom-up process, while gobies are influenced by top-down processes such as predation and competition. A model for the regulation of fish community dynamics, incorporating both bottomup processes, corresponding to disturbance, and top-down processes are outlined. Wind stress may be seen as a proxy variable for wind-driven currents that results in dispersal of eggs and larvae and advection of prey species into coastal areas. About half of the fjords along the southern Norwegian Skagerrak coast are well fitted when wind stress is included as an environmental forcing factor in the period 1957-94. Along with richness-dependent regulation, the dynamics of fish-species richness are well predicted with the simple model presented. |
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