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Issue: Vol. 2548 No. 1: 26 Jul. 2010
Type: Articles
Published: 2010-07-26
DOI: 10.11646/zootaxa.2548.1.2
Page range: 22–42
Abstract views: 45
PDF downloaded: 1

Oribatid mites (Acari: Oribatida) from Austrocedrus chilensis and Nothofagus forests of Northwestern Patagonia (Argentina)

Departamento de Zoología, Centro regional Universitario Bariloche, Universidad Nacional del Comahue, Calle Quintral 1250 CP 8400 San Carlos de Bariloche, Argentina
Departamento de Biología, Universidad Nacional de Mar del Plata, Funes 3350 CP 7600 Mar del Plata, Argentina
CEPAVE, CONICET LA PLATA- UNLP, Calle 2 N°584 e/43 y 44, (1900) La Plata, Buenos Aires, Argentina
Acari soil leaf litter pitfall trap Oribatid mites forest Andes Patagonia Taxonomy

Abstract

Forest sites in Northwestern Argentinean Patagonia were surveyed to determine the oribatid mite fauna. A taxonomic inventory of oribatid mites was carried out in Northwestern Argentinean Patagonia to establish the taxonomic diversity, for increasing the knowledge of their distribution, detecting new species and assessing environmental effects on the oribatid mite community. Eleven sampling sites in nearly pure forests of Austrocedrus chilensis, Nothofagus dombeyi, Nothofagus antarctica were selected as these are among the most recurrent arboreal species found in this region. Samples of leaf litter, soil and pitfall traps contents were taken from each forest. Fifty-five oribatid species, belonging to 46 genera in 28 families, were found. Nine species are new records for Argentina and one for continental Argentina. Thirty-two species were recorded in A. chilensis forests, 35 in N. dombeyi forests and 20 in N. antarctica forests. Fifty species were found in leaf litter, 35 in soil and eight in pitfall traps. Fourteen species were recorded exclusively in leaf litter, one in soil and four in pitfall traps. A high level of endemism is confirmed as nearly 62 % of collected species have previously been found only in Southern Andes supporting the existence of an associated autochthonous oribatid fauna.

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