Changes in arthropod assemblages along a wide gradient of disturbance in Gabon

Conservation Biology : the Journal of the Society for Conservation Biology
Yves BassetThomas Wagner

Abstract

Searching for indicator taxa representative of diverse assemblages, such as arthropods, is an important objective of many conservation studies. We evaluated the impacts of a wide gradient of disturbance in Gabon on a range of arthropod assemblages representing different feeding guilds. We examined 4 x 10(5) arthropod individuals from which 21 focal taxa were separated into 1534 morphospecies. Replication included the understory of 3 sites in each of 4 different stages of forest succession and land use (i.e., habitats) after logging (old and young forests, savanna, and gardens). We used 3 complementary sampling methods to survey sites throughout the year. Overall differences in arthropod abundance and diversity were greatest between forest and open habitats, and cleared forest invaded by savanna had the lowest abundance and diversity. The magnitude of faunal differences was much smaller between old and young forests. When considered at this local scale, anthropogenic modification of habitats did not result in a monotonous decline of diversity because many herbivore pests and their associated predators and parasitoids were abundant and diverse in gardens, where plant productivity was kept artificially high year-round through wate...Continue Reading

References

Nov 16, 2007·Proceedings of the National Academy of Sciences of the United States of America·J BarlowC A Peres
Jun 1, 1996·Trends in Ecology & Evolution·R K DidhamA J Davis

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Citations

Jun 9, 2009·Ecology Letters·Toby A GardnerNavjot S Sodhi
Oct 3, 2018·Genome Génome / Conseil National De Recherches Canada·Sylvain DelabyeThibaud Decaëns
Nov 18, 2018·Conservation Biology : the Journal of the Society for Conservation Biology·Tsung-Jen Shen, Youhua Chen
Apr 4, 2015·Nature·Tim NewboldAndy Purvis

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