Modelling local-scale determinants and the probability of microarthropod species occurrence in Antarctic soils

Tancredi Caruso*, Francesca Borghini, Charlie Bucci, Andrea Colacevich, Roberto Bargagli

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Soil fauna in the extreme conditions of Antarctica consists of a few microinvertebrate species patchily distributed at different spatial scales. Populations of the prostigmatic mite Stereotydeus belli and the collembolan Gressittacantha terranova from northern Victoria Land (Antarctica) were used as models to study the effect of soil properties on microarthropod distributions. In agreement with the general assumption that the development and distribution of life in these ecosystems is mainly controlled by abiotic factors, we found that the probability of occurrence of S. belli depends on soil moisture and texture and on the sampling period (which affects the general availability of water); surprisingly, none of the analysed variables were significantly related to the G. terranova distribution. Based on our results and literature data, we propose a theoretical model that introduces biotic interactions among the major factors driving the local distribution of collembolans in Antarctic terrestrial ecosystems. (c) 2007 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)2949-2956
Number of pages8
JournalSoil Biology and Biochemistry
Volume39
Issue number11
DOIs
Publication statusPublished - Nov 2007

Keywords

  • Antarctic arthropods
  • HABITAT
  • biological interactions
  • TERRESTRIAL ECOSYSTEMS
  • COMMUNITY
  • VICTORIA LAND
  • GOMPHIOCEPHALUS-HODGSONI
  • distribution
  • models
  • COLLEMBOLA
  • soil properties
  • ABUNDANCE
  • INVERTEBRATES
  • CLIMATE-CHANGE
  • ROSS ISLAND

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