Grass, Ingo

[["dc.bibliographiccitation.firstpage","152"],["dc.bibliographiccitation.journal","Agriculture, Ecosystems & Environment"],["dc.bibliographiccitation.lastpage","160"],["dc.bibliographiccitation.volume","280"],["dc.contributor.author","Li, Kevin"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Saintes, Barbara"],["dc.contributor.author","Buchori, Damayanti"],["dc.contributor.author","Grass, Ingo"],["dc.date.accessioned","2019-07-23T07:03:06Z"],["dc.date.available","2019-07-23T07:03:06Z"],["dc.date.issued","2019"],["dc.description.abstract","Oil palm (Elaeis guineensis Jacq) is an economically important crop, yet it plays a major role in tropical deforestation and has significant negative impacts on biodiversity. The ecological drivers of oil palm pollination are still poorly understood, despite pollination being a key ecosystem service for the yield of this multi-billion-dollar industry, with potential links to biodiversity conservation. Here we review biotic and abiotic drivers of pollination and known oil palm pollinators, including local insect species endemic to specific growing regions, and an important, globally-introduced West African weevil (Elaeidobius kamerunicus) whose fluctuating populations have led to concerns about yield and resilience. Future research should clarify pollinator community dynamics to facilitate pollination complementarity, which may strengthen pollination services in regions beyond the oil palm and weevil’s native West African ecosystem. In addition, other interactions such as mutualism, predation, and parasitism are not yet well understood, but could provide further insight into population drivers. Future management research should explore manipulating male palm inflorescence density, a key resource for pollinators, as well as investigate spatial and landscape effects on pollinator populations. Critically, no studies have investigated the effects of climate change on pollination, despite the impacts of rain and temperature on pollination efficiency. A greater understanding of the role of pollinator species and their nonlinear relationships to yield, as well as the complexity of biotic, management, and climate drivers of successful pollination can contribute to a more sustainable oil palm production system that values ecosystem services gained from biodiversity, while also improving producer livelihoods."],["dc.identifier.doi","10.1016/j.agee.2019.05.001"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61858"],["dc.language.iso","en"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B09: Oberirdische Biodiversitätsmuster und Prozesse in Regenwaldtransformations-Landschaften"],["dc.relation.issn","0167-8809"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Critical factors limiting pollination success in oil palm: A systematic review"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1945"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Ecology"],["dc.bibliographiccitation.lastpage","1956"],["dc.bibliographiccitation.volume","98"],["dc.contributor.author","Denmead, Lisa H."],["dc.contributor.author","Darras, Kevin"],["dc.contributor.author","Clough, Yann"],["dc.contributor.author","Diaz, Patrick"],["dc.contributor.author","Grass, Ingo"],["dc.contributor.author","Hoffmann, Munir P."],["dc.contributor.author","Nurdiansyah, Fuad"],["dc.contributor.author","Fardiansah, Rico"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:50:52Z"],["dc.date.available","2017-09-07T11:50:52Z"],["dc.date.issued","2017"],["dc.description.abstract","One of the world's most important and rapidly expanding crops, oil palm, is associated with low levels of biodiversity. Changes in predator communities might alter ecosystem services and subsequently sustainable management but these links have received little attention to date. Here, for the first time, we manipulated ant and flying vertebrate (birds and bats) access to oil palms in six smallholder plantations in Sumatra (Indonesia) and measured effects on arthropod communities, related ecosystem functions (herbivory, predation, decomposition and pollination) and crop yield. Arthropod predators increased in response to reductions in ant and bird access, but the overall effect of experimental manipulations on ecosystem functions was minimal. Similarly, effects on yield were not significant. We conclude that ecosystem functions and productivity in oil palm are, under current levels of low pest pressure and large pollinator populations, robust to large reductions of major predators."],["dc.identifier.doi","10.1002/ecy.1882"],["dc.identifier.gro","3149941"],["dc.identifier.pmid","28464275"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6654"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B09: Oberirdische Biodiversitätsmuster und Prozesse in Regenwaldtransformations-Landschaften"],["dc.relation.issn","0012-9658"],["dc.subject","biodiversity; crop yield; decomposition; ecosystem services; exclosure; exclusion experiment; herbivory; pollination; predation; predators"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","The role of ants, birds and bats for ecosystem functions and yield in oil palm plantations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e01954"],["dc.bibliographiccitation.journal","Ecological Applications : A Publication of the Ecological Society of America"],["dc.contributor.author","Darras, Kevin"],["dc.contributor.author","Batáry, Péter"],["dc.contributor.author","Furnas, Brett J."],["dc.contributor.author","Grass, Ingo"],["dc.contributor.author","Mulyani, Yeni A."],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2019-07-23T06:52:53Z"],["dc.date.available","2019-07-23T06:52:53Z"],["dc.date.issued","2019"],["dc.description.abstract","Autonomous sound recording techniques have gained considerable traction in the last decade, but the question remains whether they can replace human observation surveys to sample sonant animals. For birds in particular, survey methods have been tested extensively using point counts and sound recording surveys. Here, we review the latest evidence for this taxon within the frame of a systematic map. We compare sampling effectiveness of these two survey methods, the output variables they produce, and their practicality. When assessed against the standard of point counts, autonomous sound recording proves to be a powerful tool that samples at least as many species. This technology can monitor birds in an exhaustive, standardized, and verifiable way. Moreover, sound recorders give access to entire soundscapes from which new data types can be derived (vocal activity, acoustic indices). Variables such as abundance, density, occupancy, or species richness can be obtained to yield data sets that are comparable to and compatible with point counts. Finally, autonomous sound recorders allow investigations at high temporal and spatial resolution and coverage, which are more cost effective and cannot be achieved by human observations alone, even though small-scale studies might be more cost effective when carried out with point counts. Sound recorders can be deployed in many places, they are more scalable and reliable, making them the better choice for bird surveys in an increasingly data-driven time. We provide an overview of currently available recorders and discuss their specifications to guide future study designs."],["dc.identifier.doi","10.1002/eap.1954"],["dc.identifier.pmid","31206926"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61854"],["dc.language.iso","en"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B09: Oberirdische Biodiversitätsmuster und Prozesse in Regenwaldtransformations-Landschaften"],["dc.relation.issn","1051-0761"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Autonomous sound recording outperforms human observation for sampling birds: a systematic map and user guide"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]