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1 July 2003 Structure of water mite taxocoenoses in two northwestern Argentinean subtropical sub-catchments
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Abstract

Hydrachnidia water mites were examined in eight streams with similar chemistry from two sub-catchments that did not differ with respect to precipitation predictability (P>0.05). This study describes the structure of this taxonomic segment of the invertebrate community as species diversity, relative abundance, and composition. Twenty-two water mite species were found in this study. Following rarefaction to sub-samples of 170 individuals, expected richness for these eight subtropical streams was lower (E<16) than found for a tropical stream (E=23). Species composition and the log-normal distribution of species were similar in the two subcatchments. However, richness and diversity show significant differences between the two sub-catchments (P<0.05). The results suggest that similar seasonal rainfall pattern (contingency>65%) does not guarantee similar patterns of diversity and richness in neighboring sub-catchments.

© 2003 Systematic & Applied Acarology Society
Hugo R. Fernández "Structure of water mite taxocoenoses in two northwestern Argentinean subtropical sub-catchments," Systematic and Applied Acarology 8(1), (1 July 2003). https://doi.org/10.11158/saa.8.1.6
Accepted: 1 June 2003; Published: 1 July 2003
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