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Título: Abundance and diversity of soil arthropods in olive grove ecosystem (Portugal): effect of pitfall trap type
Autor: Santos, Sónia A.P.
Cabanas, J.E.
Pereira, J.A.
Palavras-chave: Epigeic arthropods
Olive grove
Trap type
Issue Date: 2007
Editora: Elsevier
Citação: Santos, S.A.P.; Cabanas, J.E.; Pereira, J.A. (2007) - Abundance and diversity of soil arthropods in olive grove ecosystem (Portugal): the pitfall trap type effect. European Journal of Soil Biology. ISSN 1164-5563. 43:2, p. 77-83.
Resumo: Soil arthropod biodiversity is an indicator of soil quality and can be studied using pitfall trapping. In this research, olive grove edaphic fauna was assessed at different sampling dates by comparing two different diameters (7 and 9 cm) and three different contents (empty, water and preservative) of pitfall traps in order to determine which type of pitfall trap is more efficient. Considering all pitfall trap types and sampling times, a total of 12,937 individual edaphic arthropods belonging to 11 taxa were recovered. Smaller traps with preservative collected significantly more individuals than the other pitfalls tested. Larger and empty traps collected significantly more spiders and traps with preservative collected more beetles. Smaller and empty traps collected fewer individuals than the other trap types. Both Shannon’s diversity and Pielou’s evenness indexes were higher in the larger and empty traps and richness was higher in the smaller traps filled with water. The study of myrmecocenosis was emphasised because olive grove soil fauna was numerically dominated by Formicidae (56.6% of all organisms captured) belonging to 12 genera and 24 species; Tapinoma nigerrimum, Messor barbarus, Cataglyphis hispanicus, Tetramorium semilaeve, Cataglyphis ibericus, Messor bouvieri and Camponotus cruentatus were the most abundant ant species. Traps with preservative reached the highest accumulation of species for a small number of pitfalls when compared with the other pitfalls studied and a sampling effort of 20 samples is apparently sufficient to sample the greater part of the ant species of the olive grove. From this study, it seems that traps with preservative are the best choice to use in further studies concerning the epiedaphic fauna of the olive grove.
Arbitragem científica: yes
ISSN: 1164-5563
Appears in Collections:PTV - Artigos em Revistas Indexados ao ISI/Scopus

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