Rotifers from the Balearic archipelago |
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Authors: | J De Manuel J LL Pretus D Jaume |
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Institution: | (1) Departament d'Ecologia. Facultat de Biologia, Universitat de Barcelona, Avg. Diagonal 645, 08028 Barcelona, Spain |
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Abstract: | Ecological and historical factors of the Balearic archipelago (Western Mediterranean Sea) result is some peculiarities to its rotifer fauna. A group of warm-stenothermous species are frequent seasonally in the islands. Among them the occurrence of Keratella procurva (Thorpe, 1912), a pantropical species, is remarkable, and this is found more or less abundantly on each island. We briefly describe the different habitat categories of the archipelago. Clustering the collected species we relate each community type to its habitat; in this sense we distinguish 4 community type in the islands corresponding to different environments. This work also summarizes all the obtainable data on the rotifer fauna of the Balearic archipelago, adding the results of the investigations done in the last survey (spring, 1989); a checklist, including 100 species from the archipelago, is shown (69 Majorca, 72 Minorca, 24 Ibiza, 25 Formentera). Some examples of pantropical distribution are given, and the biotic and abiotic factors which determine the colonization of the islands by these species are discussed. |
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Keywords: | Balearic Islands zoogeography community type checklist pantropical rotifers |
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