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

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dc.contributor.author Basset, Yves en
dc.contributor.author Missa, Olivier en
dc.contributor.author Alonso, Alfonso en
dc.contributor.author Miller, Scott E. en
dc.contributor.author Curletti, Gianfranco en
dc.contributor.author De Meyer, Marc en
dc.contributor.author Eardley, Connal en
dc.contributor.author Lewis, Owen T. en
dc.contributor.author Mansell, Mervyn W. en
dc.contributor.author Novotny, Vojtech en
dc.contributor.author Wagner, Thomas en
dc.date.accessioned 2009-10-23T14:27:28Z
dc.date.available 2009-10-23T14:27:28Z
dc.date.issued 2008
dc.identifier.citation Basset, Yves, Missa, Olivier, Alonso, Alfonso, Miller, Scott E., Curletti, Gianfranco, De Meyer, Marc, Eardley, Connal, Lewis, Owen T., Mansell, Mervyn W., Novotny, Vojtech, and Wagner, Thomas. 2008. "<a href="https://repository.si.edu/handle/10088/8335">Changes in arthropod assemblages along a wide gradient of disturbance in Gabon</a>." <em>Conservation Biology</em>. 22 (6):1552&ndash;1563. <a href="https://doi.org/10.1111/j.1523-1739.2008.01017.x">https://doi.org/10.1111/j.1523-1739.2008.01017.x</a> en
dc.identifier.issn 0888-8892
dc.identifier.uri http://hdl.handle.net/10088/8335
dc.description.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 × 105 arthropod individuals fromwhich 21 focal taxawere 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 watering and crop rotation. We used a variety of response variables to measure the strength of correlations across survey locations among focal taxa. These could be ranked as follows in terms of decreasing number of significant correlations: species turnover &gt; abundance &gt; observed species richness &gt; estimated species richness &gt; percentage of site-specific species. The number of significant correlations was generally low and apparently unrelated to taxonomy or guild structure. Our results emphasize the value of reporting species turnover in conservation studies, as opposed to simply measuring species richness, and that the search for indicator taxa is elusive in the tropics. One promising alternative might be to consider predictor sets of a small number of taxa representative different functional groups, as identified in our study. en
dc.format.extent 517541 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.relation.ispartof Conservation Biology en
dc.title Changes in arthropod assemblages along a wide gradient of disturbance in Gabon en
dc.type Journal Article en
dc.identifier.srbnumber 74221
dc.identifier.doi 10.1111/j.1523-1739.2008.01017.x
rft.jtitle Conservation Biology
rft.volume 22
rft.issue 6
rft.spage 1552
rft.epage 1563
dc.description.SIUnit NH-EOL en
dc.description.SIUnit STRI en
dc.description.SIUnit NMNH en
dc.description.SIUnit NH-Entomology en
dc.description.SIUnit crc en
dc.description.SIUnit NZP en
dc.citation.spage 1552
dc.citation.epage 1563

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