Regional-scale effects override the influence of fine-scale landscape heterogeneity on rice arthropod communities
Irrigated rice croplands are among the most biologically diverse agroecosystems globally; however, intensification and simplification of farmed areas into homogeneous monocultures can lead to biodiversity loss and a reduction of associated ecosystem services such as natural pest regulation. Understa...
| Autores principales: | , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2017
|
| Acceso en línea: | https://hdl.handle.net/10568/165013 |
| _version_ | 1855522715288469504 |
|---|---|
| author | Dominik, Christophe Seppelt, Ralf Horgan, Finbarr G. Marquez, Leonardo Settele, Josef Václavík, Tomáš |
| author_browse | Dominik, Christophe Horgan, Finbarr G. Marquez, Leonardo Seppelt, Ralf Settele, Josef Václavík, Tomáš |
| author_facet | Dominik, Christophe Seppelt, Ralf Horgan, Finbarr G. Marquez, Leonardo Settele, Josef Václavík, Tomáš |
| author_sort | Dominik, Christophe |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Irrigated rice croplands are among the most biologically diverse agroecosystems globally; however, intensification and simplification of farmed areas into homogeneous monocultures can lead to biodiversity loss and a reduction of associated ecosystem services such as natural pest regulation. Understanding how landscape heterogeneity affects the diversity of arthropod communities is therefore crucial for the sustainable management of rice agroecosystems. Here, we examine the influence of fine-scale landscape heterogeneity and regional-scale effects on the arthropod communities of three rice-production regions in the Philippines. Our analysis of 213 arthropod morphospecies (37,339 individuals) collected using two sampling methods at 28 field sites indicated that the rice agroecosystems in each study region had unique arthropod assemblages, likely reflecting region-specific environmental and land-use conditions. For all sites together, we found no effect of fine-scale landscape context (classified as rather high or low heterogeneity sites) on assemblage structure (arthropod abundance, species richness or diversity). When assemblages were analyzed separately, significant effects of fine-scale landscape context were only detected in one region and for two functional groups (predators and detritivores). Elevation gradient, used as a proxy for regional-scale effects in the study regions, explained more than 60% of variance in assemblage structure. Total arthropod abundance and rarefied species richness were negatively related to elevation, suggesting that regional-scale effects rather than fine-scale landscape heterogeneity explained the composition of rice-arthropod communities in landscapes. To further disentangle the complex effects of broad-scale environmental drivers versus fine-scale landscape complexity on arthropod communities and biocontrol services, future research in rice agroecosystems should focus on a more detailed quantification of landscape heterogeneity and examine its effect at multiple spatial scales |
| format | Journal Article |
| id | CGSpace165013 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1650132025-01-24T14:12:41Z Regional-scale effects override the influence of fine-scale landscape heterogeneity on rice arthropod communities Dominik, Christophe Seppelt, Ralf Horgan, Finbarr G. Marquez, Leonardo Settele, Josef Václavík, Tomáš Irrigated rice croplands are among the most biologically diverse agroecosystems globally; however, intensification and simplification of farmed areas into homogeneous monocultures can lead to biodiversity loss and a reduction of associated ecosystem services such as natural pest regulation. Understanding how landscape heterogeneity affects the diversity of arthropod communities is therefore crucial for the sustainable management of rice agroecosystems. Here, we examine the influence of fine-scale landscape heterogeneity and regional-scale effects on the arthropod communities of three rice-production regions in the Philippines. Our analysis of 213 arthropod morphospecies (37,339 individuals) collected using two sampling methods at 28 field sites indicated that the rice agroecosystems in each study region had unique arthropod assemblages, likely reflecting region-specific environmental and land-use conditions. For all sites together, we found no effect of fine-scale landscape context (classified as rather high or low heterogeneity sites) on assemblage structure (arthropod abundance, species richness or diversity). When assemblages were analyzed separately, significant effects of fine-scale landscape context were only detected in one region and for two functional groups (predators and detritivores). Elevation gradient, used as a proxy for regional-scale effects in the study regions, explained more than 60% of variance in assemblage structure. Total arthropod abundance and rarefied species richness were negatively related to elevation, suggesting that regional-scale effects rather than fine-scale landscape heterogeneity explained the composition of rice-arthropod communities in landscapes. To further disentangle the complex effects of broad-scale environmental drivers versus fine-scale landscape complexity on arthropod communities and biocontrol services, future research in rice agroecosystems should focus on a more detailed quantification of landscape heterogeneity and examine its effect at multiple spatial scales 2017-08 2024-12-19T12:54:36Z 2024-12-19T12:54:36Z Journal Article https://hdl.handle.net/10568/165013 en Open Access Elsevier Dominik, Christophe; Seppelt, Ralf; Horgan, Finbarr G.; Marquez, Leonardo; Settele, Josef and Václavík, Tomáš. 2017. Regional-scale effects override the influence of fine-scale landscape heterogeneity on rice arthropod communities. Agriculture, Ecosystems and Environment, Volume 246 p. 269-278 |
| spellingShingle | Dominik, Christophe Seppelt, Ralf Horgan, Finbarr G. Marquez, Leonardo Settele, Josef Václavík, Tomáš Regional-scale effects override the influence of fine-scale landscape heterogeneity on rice arthropod communities |
| title | Regional-scale effects override the influence of fine-scale landscape heterogeneity on rice arthropod communities |
| title_full | Regional-scale effects override the influence of fine-scale landscape heterogeneity on rice arthropod communities |
| title_fullStr | Regional-scale effects override the influence of fine-scale landscape heterogeneity on rice arthropod communities |
| title_full_unstemmed | Regional-scale effects override the influence of fine-scale landscape heterogeneity on rice arthropod communities |
| title_short | Regional-scale effects override the influence of fine-scale landscape heterogeneity on rice arthropod communities |
| title_sort | regional scale effects override the influence of fine scale landscape heterogeneity on rice arthropod communities |
| url | https://hdl.handle.net/10568/165013 |
| work_keys_str_mv | AT dominikchristophe regionalscaleeffectsoverridetheinfluenceoffinescalelandscapeheterogeneityonricearthropodcommunities AT seppeltralf regionalscaleeffectsoverridetheinfluenceoffinescalelandscapeheterogeneityonricearthropodcommunities AT horganfinbarrg regionalscaleeffectsoverridetheinfluenceoffinescalelandscapeheterogeneityonricearthropodcommunities AT marquezleonardo regionalscaleeffectsoverridetheinfluenceoffinescalelandscapeheterogeneityonricearthropodcommunities AT settelejosef regionalscaleeffectsoverridetheinfluenceoffinescalelandscapeheterogeneityonricearthropodcommunities AT vaclaviktomas regionalscaleeffectsoverridetheinfluenceoffinescalelandscapeheterogeneityonricearthropodcommunities |