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Biotic and abiotic factors determining the distribution of two prawn species: Palaemon adspersus and P. squilla
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology, Animal Ecology.
1981 (English)In: Oecologia, ISSN 0029-8549, E-ISSN 1432-1939, Vol. 49, no 3, 300-304 p.Article in journal (Refereed) Published
Abstract [en]

The reasons behind the absence of the prawn Palaemon adspersus and the presence of P. squilla in rockpools and on bare sand bottoms were studied. Some maximal abundances in different habitats are given. Introduction experiments into natural and artificial rockpools and measurements of tolerance towards low oxygen levels showed that nocturnal hypoxia excluded P. adspersus which was significantly more sensitive to oxygen depletion. Respiration rates measured by the closed-bottle method showed no interspecific difference. On bare sand bottoms P. aspersus was probably excluded by predators, since predator exclusion experiments in cages and predator inclusion experiments in containers showed that P. adaspersus was more vulnerable to predation than P. squilla.The costs for being able to cope with a wide array of habitat in P. squilla are probably balanced by the benefits of access to habitats such as intertidal rockpools, very shallow bottoms and deeper sand bottoms. Tolerance towards abiotic factors extends its habitat range upwards into shallower waters, and tolerance towards biotic factors, i.e. predation, extends it downwards.

Place, publisher, year, edition, pages
1981. Vol. 49, no 3, 300-304 p.
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-126446DOI: 10.1007/BF00347589ISI: A1981LZ15700003OAI: oai:DiVA.org:uu-126446DiVA: diva2:324057
Available from: 2010-06-14 Created: 2010-06-14 Last updated: 2017-12-12Bibliographically approved

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Berglund, Anders

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