Scale dependency of insect assemblages in response to landscape pattern

Chust, Guillem; Pretus, Joan Lluís; Ducrot, Danielle; Ventura, Daniel

doi:10.1023/b:land.0000018368.99833.f2

Cited by 59 publications

(51 citation statements)

References 37 publications

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“…Our results demonstrate that local arthropod diversity was influenced both by local and regional processes (Borges and Brown, 2004;Chust et al, 2004;Holland et al, 2004;Gaucherel et al, 2007;Gonzá lez-Mejias et al, 2007;Driscoll, 2008;Ricklefs, 2008). This suggests that either the mechanisms controlling species diversity or their intensity vary with the spatial scale (Wiens, 1989).…”

Section: Discussionmentioning

confidence: 65%

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A spatial scale assessment of habitat effects on arthropod communities of an oceanic island

et al. 2009

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a b s t r a c tMost habitats in the Azores have undergone substantial land-use changes and anthropogenic disturbance during the last six centuries. In this study we assessed how the richness, abundance and composition of arthropod communities change with: (1) habitat type and (2) the surrounding land-use at different spatial scales. The research was conducted in Terceira Island, Azores. In eighty-one sites of four different habitat types (natural and exotic forests, semi-natural and intensively managed pastures), epigaeic arthropods were captured with pitfall traps and classified as endemic, native or introduced. The land-use surrounding each site was characterized within a radius ranging from 100 to 5000 m. Nonparametric tests were used to identify differences in species richness, abundance and composition between habitat types at different spatial scales. Endemic and native species were more abundant in natural forests, while introduced species were more abundant in intensively managed pastures. Natural forests and intensively managed pastures influenced arthropod species richness and composition at all spatial scales. Exotic forests and semi-natural pastures, however, influenced the composition of arthropod communities at larger scales, promoting the connectivity of endemic and native species populations. Local species richness, abundance and composition of arthropod communities are mostly determined by the presence of nearby natural forests and/or intensively managed pastures. However, semi-natural pastures and exotic forests seem to play an important role as corridors between natural forests for both endemic and native species. Furthermore, exotic forests may serve as a refuge for some native species.

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Section: Discussionmentioning

confidence: 65%

“…In arthropods (see Chust et al, 2004;Holland et al, 2004;Clough et al, 2005;Gaucherel et al, 2007;Gonzá lez-Mejias et al, 2007;Hendrickx et al, 2007;Driscoll, 2008), such analysis can help to identify the spatial scales at which a predictor variable influences species richness and abundance of local communities.…”

Section: Introductionmentioning

confidence: 99%

A spatial scale assessment of habitat effects on arthropod communities of an oceanic island

et al. 2009

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“…Since a greater distance can be covered by air for an equal energy cost, we expect orchid bee species to be highly 'spatially mobile', and the effects of habitat complexity (if any) to be less pronounced (Chust et al, 2004). To our knowledge, there have been no comparative studies describing orchid bee community patterns in relation to habitat complexity on a landscape scale.…”

Section: Introductionmentioning

confidence: 99%

Orchid bee fauna responds to habitat complexity on a savanna area (Cerrado) in Brazil.

et al. 2016

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Habitat structure and complexity may broadly affect the diversity and composition of a variety of fauna in terrestrial systems. Here we investigated responses of orchid bee assemblages to habitat complexity, with the aim of assessing complexity as a useful surrogate for species diversity of this group. We test the following hypotheses: (i) There is a greater species richness and abundance of orchid bee in sites with high habitat complexity than lower habitat complexity; (ii) High habitat complexity sites have a different species composition of orchid bee than lower habitat complexity sites. For the purposes of our study, we defined habitat complexity as the heterogeneity in the arrangement in physical structure of habitat (vegetation), although there are a large range of operational definitions in the literature. As result, orchid bee species richness was higher in high complexity areas while community composition was not affected by habitat complexity, because Euglossa melanotricha and E. leucotricha were the dominant species, occurring in both environments. Habitat complexity, measured as a function of differences in multiple strata in forests, may be of great worth as a surrogate for the diversity of a range of arthropod groups including orchid bees.

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“…The spatial components of the landscape, the complexity and spatial heterogeneity directly influence the diversity and distribution of organisms affecting variables such as the presence and abundance of species and biotic interactions (Chust et al 2004, Dajoz 2005, Hirao et al 2008). …”

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confidence: 99%

Biotic factors and occurrence of Lutzomyia longipalpis in endemic area of visceral leishmaniasis, Mato Grosso do Sul, Brazil

Oliveira¹,

Silva

Fernandes³

et al. 2012

Mem. Inst. Oswaldo Cruz

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The relationships between environmental exposure to risk agents and health conditions have been studied with the aid of remote sensing imagery, a tool particularly useful in the study of vegetation cover. This study aims to evaluate the influence of environmental variables on the spatial distribution of the abundance of Lutzomyia longipalpis and the reported canine and human visceral leishmaniasis (VL) cases at an urban area of Campo Grande, state of Mato Grosso do Sul. The sandfly captures were performed in 13 residences that were selected by raffle considering four residences or collection station for buffer. These buffers were generated from the central house with about 50, 100 and 200 m from it in an endemic area of VL. The abundance of sandflies and human and canine cases were georreferenced using the GIS software PCI Geomatica. The normalized difference vegetation index (NDVI) and percentage of land covered by vegetation were the environmental variables extracted from a remote sensing IKONOS-2 image. The average NDVI was considered as the complexity of habitat and the standard deviation as the heterogeneity of habitat. One thousand three hundred sixty-seven specimens were collected during the catch. We found a significant positive linear correlation between the abundance of sandflies and the percentage of vegetation cover and average NDVI. However, there was no significant association between habitat heterogeneity and the abundance of these flies

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Scale dependency of insect assemblages in response to landscape pattern

Cited by 59 publications

References 37 publications

A spatial scale assessment of habitat effects on arthropod communities of an oceanic island

A spatial scale assessment of habitat effects on arthropod communities of an oceanic island

Orchid bee fauna responds to habitat complexity on a savanna area (Cerrado) in Brazil.

Biotic factors and occurrence of Lutzomyia longipalpis in endemic area of visceral leishmaniasis, Mato Grosso do Sul, Brazil

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