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Open Marien Archief

Het Open Marien Archief van België (OMA) biedt vrije toegang tot de digitale publicaties over de Vlaamse kust en het Belgisch deel van de Noordzee, en alle andere mariene, estuariene en kustgebonden publicaties van Belgische auteurs en wetenschappers en van buitenlandse wetenschappers geaffilieerd aan een Belgische instelling.

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Salinity effects on the coexistence of cryptic species: a case study on marine nematodes
De Meester, N.; Derycke, S.; Bonte, D.; Moens, T. (2011). Salinity effects on the coexistence of cryptic species: a case study on marine nematodes. Mar. Biol. (Berl.) 158(12): 2717-2726. hdl.handle.net/10.1007/s00227-011-1769-5
In: Marine Biology. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, meer
Peer reviewed article  

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    Rhabditis (Pellioditis) marina (Bastian, 1865) Andrassy, 1984 [WoRMS]
    Marien

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Abstract
    The coexistence of four cryptic species of Rhabditis (Pellioditis) marina (Nematoda: Rhabditidae) at small geographical scale challenges ecological competition theory and was therefore studied in the laboratory at two different salinities, where their performance in combined cultures was compared with that in monospecies cultures. We found that three of the four cryptic species were able to coexist, but that interspecific interactions (competition and facilitation) were common. Salinity had an effect on these interactions, with a shift from contest to scramble competition. This shift may result from an increased population development of two of the four species at the lower salinity in the monospecific cultures. This experiment demonstrates that abiotic conditions may play an important role in achieving coexistence between cryptic species and can alter the interspecific interactions between them.

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