Journal
ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
Volume 28, Issue 2, Pages 71-76Publisher
ELSEVIER
DOI: 10.1016/j.actao.2004.10.003
Keywords
Hymenoptera; parasitoids; community structure; rarity; species richness; singletons; ecological drift
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Recent investigations about the relationship between the number of species of taxonomic lineages and regional patterns of species abundances gave indecisive results. Here, it is shown that mean densities of species of a species-rich community of forest Hymenoptera (673 species out of 25 families) were positively related to the number of European species per family. The fraction of abundant species per family declined and the fraction of rare species increased with species richness. Species rich families contained relatively more species, which were present in only one study year (occasional species), and relatively fewer species present during the whole study period (frequent species). (c) 2004 Elsevier SAS. All rights reserved.
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