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
| one publication added to basket [238418] |
Encounter competition partly explains the segregation of the sandy beach amphipods Bathyporeia pilosa and Bathyporeia sarsi. A mesocosm experiment
Van Tomme, J.; Van Colen, C.; Degraer, S.; Vincx, M. (2012). Encounter competition partly explains the segregation of the sandy beach amphipods Bathyporeia pilosa and Bathyporeia sarsi. A mesocosm experiment. J. Exp. Mar. Biol. Ecol. 438: 118-124. dx.doi.org/10.1016/j.jembe.2012.09.012
In: Journal of Experimental Marine Biology and Ecology. Elsevier: New York. ISSN 0022-0981; e-ISSN 1879-1697
|  |
| Trefwoorden |
Amphipoda [WoRMS]
Marien/Kust |
| Author keywords |
Amphipods; Biotic interactions; Distribution; Encounter competition;Mesocosm; Sandy beach |
| Auteurs | | Top |
- Van Tomme, J.
- Van Colen, C.
- Degraer, S.
- Vincx, M.
|
|
|
| Abstract |
Biotic interactions such as competition and predation are known to play an important role in structuring communities. In this study, the intra- and interspecific competition between two congeneric sandy beach amphipods Bathyporeia pilosa and B. sarsi was examined by means of a two-way factorial mesocosm experiment. The amount of natural food resources as well as population densities of B. pilosa and B. sarsi were manipulated in order to investigate whether firstly, the species compete for food, and secondly, whether crowding effects, such as damaging encounter competition, are present within and between both Bathyporeia species. The absence of food negatively influenced survival and recruitment and enhanced aggressive behavior in the B. sarsi population, while there was no influence of the absence of food in the B. pilosa population. In the field, B. pilosa is occurring high in the intertidal where food supply is low, while B. sarsi is occurring in the mid-intertidal where food supply is higher. Hence, B. pilosa is more adapted to low food conditions than B. sarsi. Although an increased intraspecific density stimulated encounter competition within the B. sarsi population, no evidence of interspecific competition was found in this study. This first report on encounter competition for the deposit-feeding amphipod Bathyporeia sarsi suggests that zonation patterns of the two amphipods may be the result of the combined influence of species-specific physiological restrictions and biotic interactions within the B. sarsi population, indicating that on dissipative beaches, biotic interactions may be more common than generally considered. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
