Efficiency in inventories of ants in a forest reservein Central Amazonia

Pesquisa Agropecuária Brasileira

Jorge Luiz Pereira De Souza²  Carlos Alberto Ribeiro De Moura¹  Elizabeth Franklin² 

[1] ,Instituto Nacional de Pesquisas da Amazônia Departmento de Entomologia Manaus AM ,Brazil

关键词: Formicidae;    environmental impact assessment;    soil biodiversity;    Winkler extractors;    tropical forest;    sampling protocols;    Formicidae;    avaliação do impacto ambiental;    biodiversidade do solo;    extratores de Winkler;    floresta tropical;    protocolos de coleta;   

DOI  :  10.1590/S0100-204X2009000800021

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate an inventory method efficiency for ants. We used subsamples collected in 24 transects of 100 m, distributed in 6 plots of 600 ha each in primary forest, as part of a long-term project. Ten litter subsamples were extracted per transect using Winkler extractors. Ants were identified to genus level, and Crematogaster, Gnamptogenys and Pachycondyla genera to species/morphospecies level. To evaluate the consequences of reduced sampling on the retention of ecological information, we estimated the lowest number of subsamples needed to detect the effects of environmental variables. Multidimensional scaling (MDS) was used to generate dissimilarity matrices, and Mantel correlations between each reduced-sampling effort and maximum effort were used as an index of how much information was maintained and could still be used in multivariate analyses. Lower p-values was observed on the effect of soil pH in the community of genera, and on the effect of the litter volume for the community of Crematogaster. The trend was still detectable in the analysis based on reduced-sampling. The number of subsamples can be reduced, and the cost-efficiency of the protocol can be improved with little loss of information.

【 授权许可】

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