In: Soil Biology and Biochemistry, 2009, 41 (2), pp.323-329. The combined effects of isolation within an unfavourable matrix and vegetation development were studied in patches of scrub vegetation on a tropical inselberg (Nouragues, French Guiana). Three thickets similar to 10m2 area were sampled, located at similar to 30 m distance from each other, in which the same vegetation types were present at less than 3 m distance: canopies of Clusia minor (Clusiaceae) and Myrcia saxatilis (Myrticeae), two stages of thicket development, and zones of destruction by fire. The shallow organic soil was sampled over similar to 2 dm2 and down to 10 cm. The matrix was comprised of granite without any soil development. Arthropods were classified into morphospecies and their food diets were characterized by optical methods. The effect of isolation (between-thicket variation) on morphospecies composition was negligible, while that of vegetation type and fire (within-thicket variation) was prominent, as ascertained by principal component analysis and tested by partial redundance analysis. The importance of keystone structures (stages of vegetation development) was stressed, and interpreted to the light of taxonomic and foodweb knowledge.
Title: Nested variation of soil arthropod communities in isolated patches of vegetation on a
rocky outcrop
* Names of authors: C. Kounda-Kiki, L. Celini, J.F. Ponge , P. Mora, C. Sarthou
Complete postal addresses or affiliations:
C. Kounda-Kiki, J.F. Ponge, C. Sarthou: Muséum National d’Histoire Naturelle, CNRS UMR
7179, 4 avenue du Petit-Château, 91800 Brunoy, France
L. Celini, P. Mora: Université Paris 12, UMR 137 BioSol, Laboratoire d’Écologie des Sols
Tropicaux, 61 avenue Henri-Varagnat, 94010 Créteil Cedex, France
Full telephone, Fax number and E-mail address of the corresponding author:
Tel. +33 1 60479213
Fax +33 1 60465009
E-mail:ponge@mnhn.fr
* Complete correspondence address to which the proofs should be sent: Jean-François Ponge, Muséum National d’Histoire Naturelle, CNRS UMR 7179, 4 avenue du Petit-Château, 91800 Brunoy, France
optical methods. The effect of isolation (between-thicket variation) on morphospecies
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Keywords:arthropod
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The joint development of soil and vegetation exerts a profound influence on the
was prominent, as ascertained by principal component analysis and tested by partial
development) was stressed, and interpreted to the light of taxonomic and foodweb knowledge.
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1. Introduction
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redundance analysis. The importance of keystone structures (stages of vegetation
Arthropods were classified into morphospecies and their food diets were characterized by
development were studied in patches of scrub vegetation on a tropical inselberg (Nouragues,
2 French Guiana). Three thickets ~10 m area were sampled, located at ~30 m distance from
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canopies ofClusia minor(Clusiaceae) andMyrcia saxatilis(Myrtaceae), two stages of thicket