Grass, Ingo

[["dc.bibliographiccitation.firstpage","4417"],["dc.bibliographiccitation.issue","14"],["dc.bibliographiccitation.journal","Biodiversity and Conservation"],["dc.bibliographiccitation.lastpage","4434"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Rakotomalala, Anjaharinony A. N. A."],["dc.contributor.author","Wurz, Annemarie"],["dc.contributor.author","Grass, Ingo"],["dc.contributor.author","Martin, Dominic A."],["dc.contributor.author","Osen, Kristina"],["dc.contributor.author","Schwab, Dominik"],["dc.contributor.author","Soazafy, Marie Rolande"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Raveloson Ravaomanarivo, Lala H."],["dc.date.accessioned","2021-12-01T09:22:49Z"],["dc.date.available","2021-12-01T09:22:49Z"],["dc.date.issued","2021"],["dc.description.abstract","Abstract Understanding how land-use change affects biodiversity is a fundamental step to develop effective conservation strategies in human-modified tropical landscapes. Here, we analyzed how land-use change through tropical small-scale agriculture affects endemic, exotic, and non-endemic native ant communities, focusing on vanilla landscapes in north-eastern Madagascar, a global biodiversity hotspot. First, we compared ant species richness and species composition across seven land-use types: old-growth forest, forest fragment, forest-derived vanilla agroforest, fallow-derived vanilla agroforest, woody fallow, herbaceous fallow, and rice paddy. Second, we assessed how environmental factors drive ant species richness in the agricultural matrix to identify management options that promote endemic and non-endemic native while controlling exotic ant species. We found that old-growth forest, forest fragment, and forest-derived vanilla agroforest supported the highest endemic ant species richness. Exotic ant species richness, by contrast, was lowest in old-growth forest but highest in herbaceous fallows, woody fallows, and rice paddy. Rice paddy had the lowest non-endemic native ant species richness. Ant species composition differed among land-use types, highlighting the uniqueness of old-growth forest in harboring endemic ant species which are more sensitive to disturbance. In the agricultural matrix, higher canopy closure and landscape forest cover were associated with an increase of endemic ant species richness but a decrease of exotic ant species richness. We conclude that preserving remnant forest fragments and promoting vanilla agroforests with a greater canopy closure in the agricultural matrix are important management strategies to complement the role of old-growth forests for endemic ant conservation in north-eastern Madagascar."],["dc.description.abstract","Abstract Understanding how land-use change affects biodiversity is a fundamental step to develop effective conservation strategies in human-modified tropical landscapes. Here, we analyzed how land-use change through tropical small-scale agriculture affects endemic, exotic, and non-endemic native ant communities, focusing on vanilla landscapes in north-eastern Madagascar, a global biodiversity hotspot. First, we compared ant species richness and species composition across seven land-use types: old-growth forest, forest fragment, forest-derived vanilla agroforest, fallow-derived vanilla agroforest, woody fallow, herbaceous fallow, and rice paddy. Second, we assessed how environmental factors drive ant species richness in the agricultural matrix to identify management options that promote endemic and non-endemic native while controlling exotic ant species. We found that old-growth forest, forest fragment, and forest-derived vanilla agroforest supported the highest endemic ant species richness. Exotic ant species richness, by contrast, was lowest in old-growth forest but highest in herbaceous fallows, woody fallows, and rice paddy. Rice paddy had the lowest non-endemic native ant species richness. Ant species composition differed among land-use types, highlighting the uniqueness of old-growth forest in harboring endemic ant species which are more sensitive to disturbance. In the agricultural matrix, higher canopy closure and landscape forest cover were associated with an increase of endemic ant species richness but a decrease of exotic ant species richness. We conclude that preserving remnant forest fragments and promoting vanilla agroforests with a greater canopy closure in the agricultural matrix are important management strategies to complement the role of old-growth forests for endemic ant conservation in north-eastern Madagascar."],["dc.identifier.doi","10.1007/s10531-021-02314-4"],["dc.identifier.pii","2314"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94489"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-478"],["dc.relation.eissn","1572-9710"],["dc.relation.issn","0960-3115"],["dc.title","Tropical land use drives endemic versus exotic ant communities in a global biodiversity hotspot"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","360"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Applied Ecology"],["dc.bibliographiccitation.lastpage","371"],["dc.bibliographiccitation.volume","58"],["dc.contributor.author","Schwab, Dominik"],["dc.contributor.author","Wurz, Annemarie"],["dc.contributor.author","Grass, Ingo"],["dc.contributor.author","Rakotomalala, Anjaharinony A. N. A."],["dc.contributor.author","Osen, Kristina"],["dc.contributor.author","Soazafy, Marie Rolande"],["dc.contributor.author","Martin, Dominic A."],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.editor","Solar, Ricardo"],["dc.date.accessioned","2021-04-14T08:31:32Z"],["dc.date.available","2021-04-14T08:31:32Z"],["dc.date.issued","2020"],["dc.description.abstract","Abstract Land‐use change is the main driver of deforestation and land degradation resulting in the loss of biodiversity and ecosystem functioning in north‐eastern Madagascar. Vanilla, the region's main cash crop, is grown in agroforestry systems and may provide an opportunity for the conservation of biodiversity and ecosystem functioning. We used dummy caterpillars to assess predation rates and predator communities along a land‐use gradient including unburned old‐growth and forest fragments, herbaceous and woody fallows after shifting cultivation with fire usage, as well as rice paddies. The studied vanilla agroforests were either forest‐derived or fallow‐derived. Besides land‐use type, we considered the effects of land‐use history (unburned/burned), plot‐level parameters and the landscape composition to conclude on management recommendations. Old‐growth forest and forest fragments exhibited highest predation rates, which decreased with land‐use intensity. Overall, predation was higher in unburned land‐use types than in more open, previously burned habitats and rice paddies. High stem and vegetation densities were positively related to predation rates, but decreased with land‐use intensity. High forest cover in the surrounding landscape led to higher predation rates, while local structural parameters remained more important. The predator community was arthropod‐dominated across all land‐use types with ants responsible for between 33% and 69% of all predation events. Overall predator composition in old‐growth and forest fragments differed from all other land‐use types. Predation by Gryllacrididae (Orthoptera) was lower in all land‐use types, including forest‐derived vanilla, than in old‐growth forest and forest fragments, where they were important contributors to total predation. Vertebrate predation was low throughout. Synthesis and applications. Forested habitats feature higher predation rates and different predator compositions than other land‐use systems. Maintaining or restoring tree‐ and understorey‐rich vanilla agroforestry represents a viable tool in landscape conservation programmes as it has the potential to contribute to the conservation of predation as an important ecosystem function in both forest‐ and fallow‐derived agroforests. However, vanilla agroforestry has limited value in conserving forest‐specialized predator communities. While the establishment of tree‐rich agroforests on former fallow land is favourable for conservation ecosystem functioning, further forest transformation should be avoided."],["dc.description.abstract","Forested habitats feature higher predation rates and different predator compositions than other land‐use systems. Maintaining or restoring tree‐ and understorey‐rich vanilla agroforestry represents a viable tool in landscape conservation programmes as it has the potential to contribute to the conservation of predation as an important ecosystem function in both forest‐ and fallow‐derived agroforests. However, vanilla agroforestry has limited value in conserving forest‐specialized predator communities. While the establishment of tree‐rich agroforests on former fallow land is favourable for conservation ecosystem functioning, further forest transformation should be avoided. image"],["dc.description.sponsorship","Volkswagen Foundation http://dx.doi.org/10.13039/501100001663"],["dc.identifier.doi","10.1111/1365-2664.13766"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83629"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1365-2664"],["dc.relation.issn","0021-8901"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited."],["dc.title","Decreasing predation rates and shifting predator compositions along a land‐use gradient in Madagascar's vanilla landscapes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Nature Communications"],["dc.bibliographiccitation.volume","13"],["dc.contributor.author","Wurz, Annemarie"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Martin, Dominic Andreas"],["dc.contributor.author","Osen, Kristina"],["dc.contributor.author","Rakotomalala, Anjaharinony A. N. A."],["dc.contributor.author","Raveloaritiana, Estelle"],["dc.contributor.author","Andrianisaina, Fanilo"],["dc.contributor.author","Dröge, Saskia"],["dc.contributor.author","Fulgence, Thio Rosin"],["dc.contributor.author","Soazafy, Marie Rolande"],["dc.contributor.author","Grass, Ingo"],["dc.date.accessioned","2022-09-01T09:50:00Z"],["dc.date.available","2022-09-01T09:50:00Z"],["dc.date.issued","2022"],["dc.description.abstract","Abstract\n Resolving ecological-economic trade-offs between biodiversity and yields is a key challenge when addressing the biodiversity crisis in tropical agricultural landscapes. Here, we focused on the relation between seven different taxa (trees, herbaceous plants, birds, amphibians, reptiles, butterflies, and ants) and yields in vanilla agroforests in Madagascar. Agroforests established in forests supported overall 23% fewer species and 47% fewer endemic species than old-growth forests, and 14% fewer endemic species than forest fragments. In contrast, agroforests established on fallows had overall 12% more species and 38% more endemic species than fallows. While yields increased with vanilla vine density and length, non-yield related variables largely determined biodiversity. Nonetheless, trade-offs existed between yields and butterflies as well as  reptiles. Vanilla yields were generally unrelated to richness of trees, herbaceous plants, birds, amphibians, reptiles, and ants, opening up possibilities for conservation outside of protected areas and restoring degraded land to benefit farmers and biodiversity alike."],["dc.description.sponsorship"," Volkswagen Foundation https://doi.org/10.13039/501100001663"],["dc.description.sponsorship"," Deutscher Akademischer Austauschdienst https://doi.org/10.13039/501100001655"],["dc.identifier.doi","10.1038/s41467-022-30866-8"],["dc.identifier.pii","30866"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/113596"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-597"],["dc.relation.eissn","2041-1723"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Win-win opportunities combining high yields with high multi-taxa biodiversity in tropical agroforestry"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Diversity & Distributions"],["dc.contributor.author","Raveloaritiana, Estelle"],["dc.contributor.author","Wurz, Annemarie"],["dc.contributor.author","Grass, Ingo"],["dc.contributor.author","Osen, Kristina"],["dc.contributor.author","Soazafy, Marie Rolande"],["dc.contributor.author","Martin, Dominic A."],["dc.contributor.author","Faliniaina, Lucien"],["dc.contributor.author","Rakotomalala, Nantenaina H."],["dc.contributor.author","Vorontsova, Maria S."],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Rakouth, Bakolimalala"],["dc.date.accessioned","2021-04-14T08:28:20Z"],["dc.date.available","2021-04-14T08:28:20Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1111/ddi.13226"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82571"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1472-4642"],["dc.relation.issn","1366-9516"],["dc.title","Land‐use intensification increases richness of native and exotic herbaceous plants, but not endemics, in Malagasy vanilla landscapes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","icad.12580"],["dc.bibliographiccitation.firstpage","606"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Insect Conservation and Diversity"],["dc.bibliographiccitation.lastpage","620"],["dc.bibliographiccitation.volume","15"],["dc.contributor.affiliation","Grass, Ingo; 3\r\nEcology of Tropical Agricultural Systems\r\nUniversity of Hohenheim\r\nStuttgart Germany"],["dc.contributor.affiliation","Lees, David C.; 4\r\nDepartment of Life Sciences\r\nNatural History Museum\r\nSouth Kensington, London UK"],["dc.contributor.affiliation","Rakotomalala, Anjaharinony A. N. A.; 1\r\nAgroecology\r\nUniversity of Göttingen\r\nGöttingen Germany"],["dc.contributor.affiliation","Sáfián, Szabolcs; 6\r\nInstitute of Silviculture and Forest Protection, Faculty of Forestry\r\nUniversity of Sopron\r\nSopron Hungary"],["dc.contributor.affiliation","Martin, Dominic Andreas; 7\r\nBiodiversity, Macroecology and Biogeography\r\nUniversity of Göttingen\r\nGöttingen Germany"],["dc.contributor.affiliation","Osen, Kristina; 9\r\nTropical Silviculture and Forest Ecology\r\nUniversity of Göttingen\r\nGöttingen Germany"],["dc.contributor.affiliation","Loos, Jacqueline; 10\r\nFaculty of Sustainability\r\nLeuphana University Lüneburg\r\nLüneburg Germany"],["dc.contributor.affiliation","Benasoavina, Evrard; 11\r\nDiversity Turn in Land Use Science\r\nCoordination office\r\nSambava Madagascar"],["dc.contributor.affiliation","Alexis, Theudy; 12\r\nNatural and Environmental Sciences\r\nRegional University Centre of the SAVA Region (CURSA)\r\nAntalaha Madagascar"],["dc.contributor.affiliation","Tscharntke, Teja; 1\r\nAgroecology\r\nUniversity of Göttingen\r\nGöttingen Germany"],["dc.contributor.author","Wurz, Annemarie"],["dc.contributor.author","Grass, Ingo"],["dc.contributor.author","Lees, David C."],["dc.contributor.author","Rakotomalala, Anjaharinony A. N. A."],["dc.contributor.author","Sáfián, Szabolcs"],["dc.contributor.author","Martin, Dominic Andreas"],["dc.contributor.author","Osen, Kristina"],["dc.contributor.author","Loos, Jacqueline"],["dc.contributor.author","Benasoavina, Evrard"],["dc.contributor.author","Alexis, Theudy"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2022-06-01T09:39:29Z"],["dc.date.available","2022-06-01T09:39:29Z"],["dc.date.issued","2022"],["dc.date.updated","2022-11-11T13:14:14Z"],["dc.description.abstract","Abstract\r\n\r\nThe conversion of tropical forests into agriculture reduces biodiversity dramatically. However, species might differ in their responses, depending on their habitat specialisation and geographic origin. In this study, we assess how butterfly assemblages differ between old‐growth forests, forest fragments, forest‐derived vanilla agroforests, fallow‐derived vanilla agroforests, woody fallows, herbaceous fallows, and rice paddies in Madagascar.\r\nWe recorded 88 butterfly species, of which 65 species are endemic to Madagascar. Land‐use types with woody vegetation sustained many endemic (mean: 6.8 species) and forest butterfly species (mean: 4.8 species). Rice paddies and herbaceous fallows were richer in open‐land species (mean: 7.6 species) and poorer in forest species (mean: 1.7 species) compared to other land‐use types. Compared to herbaceous fallows, fallow‐derived vanilla agroforests hosted more endemic (+164%) and forest (+239%) species. Richness of open‐land species in forest‐derived vanilla agroforests was six times higher than in forest fragments.\r\nOverall, 27% of species occurred exclusively in one land‐use type and 19% of all species when old‐growth forests were excluded. We found the highest number of exclusive species in forest‐derived vanilla agroforests.\r\nWe conclude that all studied land‐use types contribute to butterfly conservation in our study region. Especially the woody vegetation in forest fragments, vanilla agroforests, and woody fallows supports a high butterfly diversity and is pivotal for maintaining a broad diversity of forest butterflies in the agricultural matrix. Our study highlights the importance of preserving the diversity of small‐scale land‐use types, including agroforestry, forests and fallow land in this tropical biodiversity hotspot."],["dc.description.abstract","Land‐use types with woody vegetation host a high diversity of endemic and forest butterflies and rice paddies and herbaceous fallows are rich in open‐land butterflies.\r\nFallow‐derived vanilla agroforests hosted more endemic and forest species compared to herbaceous fallows and rice paddies.\r\nPreserving a diversity of small‐scale land‐use types, including agroforestry, forests and fallow land is important to maintain a broad diversity of butterflies\r\n\r\n\r\n\r\nimage\r\n\r\nIcons created by Made, Linseed Studio and Shashank Singh from the Noun Project"],["dc.description.sponsorship","Niedersächsisches Vorab of Volkswagen Foundation"],["dc.identifier.doi","10.1111/icad.12580"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/108490"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-572"],["dc.publisher","John Wiley & Sons, Ltd."],["dc.relation.eissn","1752-4598"],["dc.relation.issn","1752-458X"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited."],["dc.title","Land‐use change differentially affects endemic, forest and open‐land butterflies in Madagascar"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]