Beckschäfer, Philip

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","iForest - Biogeosciences and Forestry"],["dc.bibliographiccitation.lastpage","11"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Beckschäfer, Philip"],["dc.contributor.author","Fehrmann, Lutz"],["dc.contributor.author","Harrison, Rhett D."],["dc.contributor.author","Xu, Jianchu"],["dc.contributor.author","Kleinn, Christoph"],["dc.date.accessioned","2017-09-07T11:47:03Z"],["dc.date.available","2017-09-07T11:47:03Z"],["dc.date.issued","2013"],["dc.description.abstract","Canopy leaf area, frequently quantified by the Leaf Area Index (LAI), serves as the dominant control over primary production, energy exchange, transpiration, and other physiological attributes related to ecosystem processes. Maps depicting the spatial distribution of LAI across the landscape are of particularly high value for a better understanding of ecosystem dynamics and processes, especially over large and remote areas. Moreover, LAI maps have the potential to be used by process models describing energy and mass exchanges in the biosphere/atmosphere system. In this article we assess the applicability of the RapidEye satellite system, whose sensor is optimized towards vegetation analyses, for mapping LAI along a disturbance gradient, ranging from heavily disturbed shrub land to mature mountain rainforest. By incorporating image texture features into the analysis, we aim at assessing the potential quality improvement of LAI maps and the reduction of uncertainties associated with LAI maps compared to maps based on Vegetation Indexes (VI) solely. We identified 22 out of the 59 image features as being relevant for predicting LAI. Among these, especially VIs were ranked high. In particular, the two VIs using RapidEye’s RED-EDGE band stand out as the top two predictor variables. Nevertheless, map accuracy as quantified by the mean absolute error obtained from a 10-fold cross validation (MAE_CV) increased significantly if VIs and texture features are combined (MAE_CV = 0.56), compared to maps based on VIs only (MAE_CV = 0.62). We placed special emphasis on the uncertainties associated with the resulting map addressing that map users often treat uncertainty statements only in a pro-forma manner. Therefore, the LAI map was complemented with a map depicting the spatial distribution of the goodness-of-fit of the model, quantified by the mean absolute error (MAE), used for predictive mapping. From this an area weighted MAE (= 0.35) was calculated and compared to the unweighted MAE of 0.29. Mapping was done using randomForest, a widely used statistical modeling technique for predictive biological mapping."],["dc.identifier.doi","10.3832/ifor0968-006"],["dc.identifier.gro","3149244"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5900"],["dc.language.iso","en"],["dc.notes.intern","Kleinn Crossref Import"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","1971-7458"],["dc.title","Mapping Leaf Area Index in subtropical upland ecosystems using RapidEye imagery and the randomForest algorithm"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","23"],["dc.bibliographiccitation.issue","01"],["dc.bibliographiccitation.journal","Open Journal of Forestry"],["dc.bibliographiccitation.lastpage","29"],["dc.bibliographiccitation.volume","03"],["dc.contributor.author","Beckschäfer, Philip"],["dc.contributor.author","Mundhenk, Philip"],["dc.contributor.author","Kleinn, Christoph"],["dc.contributor.author","Ji, Yinqiu"],["dc.contributor.author","Yu, Douglas W."],["dc.contributor.author","Harrison, Rhett D."],["dc.date.accessioned","2017-09-07T11:47:09Z"],["dc.date.available","2017-09-07T11:47:09Z"],["dc.date.issued","2013"],["dc.identifier.doi","10.4236/ojf.2013.31005"],["dc.identifier.fs","601773"],["dc.identifier.gro","3149275"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10723"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5934"],["dc.notes","Funded by Advisory Group on Inter- national Agricultural Research (BEAF) at the German Agency for International Cooperation (GIZ) within the German Minis- try for Economic Cooperation (BMZ) (project number 08.7860.3-001.00 “Making the Mekong Con- nected”—MMC)."],["dc.notes.intern","Kleinn Crossref Import"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","public"],["dc.notes.submitter","chake"],["dc.publisher","Scientific Research Publishing, Inc,"],["dc.relation.issn","2163-0429"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","Enhanced Structural Complexity Index: An Improved Index for Describing Forest Structural Complexity"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","410"],["dc.bibliographiccitation.journal","Ecological Indicators"],["dc.bibliographiccitation.lastpage","425"],["dc.bibliographiccitation.volume","102"],["dc.contributor.author","Kukunda, Collins B."],["dc.contributor.author","Beckschäfer, Philip"],["dc.contributor.author","Magdon, Paul"],["dc.contributor.author","Schall, Peter"],["dc.contributor.author","Wirth, Christian"],["dc.contributor.author","Kleinn, Christoph"],["dc.date.accessioned","2020-11-05T14:56:53Z"],["dc.date.available","2020-11-05T14:56:53Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1016/j.ecolind.2019.02.056"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/68383"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-352.4"],["dc.relation.issn","1470-160X"],["dc.title","Scale-guided mapping of forest stand structural heterogeneity from airborne LiDAR"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Liu, X. W."],["dc.contributor.author","Chesters, D."],["dc.contributor.author","Dai, Q. Y."],["dc.contributor.author","Niu, Z. Q."],["dc.contributor.author","Beckschäfer, P."],["dc.contributor.author","Martin, K."],["dc.contributor.author","Zhu, C. D."],["dc.date.accessioned","2020-12-10T18:10:06Z"],["dc.date.available","2020-12-10T18:10:06Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1038/s41598-017-05262-8"],["dc.identifier.eissn","2045-2322"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/73849"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Integrative Profiling of Bee Communities from Habitats of Tropical Southern Yunnan (China)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","228"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","iForest - Biogeosciences and Forestry"],["dc.bibliographiccitation.lastpage","237"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Beckschäfer, Philip"],["dc.contributor.author","Seidel, Dominik"],["dc.contributor.author","Kleinn, Christoph"],["dc.contributor.author","Xu, Jianchu"],["dc.date.accessioned","2017-09-07T11:47:10Z"],["dc.date.available","2017-09-07T11:47:10Z"],["dc.date.issued","2013"],["dc.description.abstract","At least 10 different methods to determine exposure for hemispherical photographs were used by scientists in the last two decades, severely hampering comparability among studies. Here, an overview of the applied methods is reported. For the standardization of photographic exposure, a time-consuming reference measurement in the open land towards the unobstructed sky was required so far. The two Histogram Methods proposed here make use of the technical advances of digital cameras which enable users to assess a photograph’s histogram directly at the location of measurement. This avoids errors occurring due to variations in sky lighting happening in the time span between taking the reference measurement and reaching the sample location within the forest. The Histogram Methods speed up and simplify taking hemispherical photographs, and introduce an objectively applicable, standardized approach. We highlight the importance of correct exposure by quantifying the overestimation of gap fraction resulting from auto-exposed photographs under a wide range of canopy openness situations. In our study, gap fraction derived from auto-exposed photographs reached values up to 900% higher than those derived from non-overexposed photographs. By investigating the size of the largest gap per photograph and the number of small gaps (gaps contributing less than 0.1% to gap fraction), we concluded that the overestimation of gap fraction resulted mainly from the overexposure of vegetation surrounding large gaps."],["dc.identifier.doi","10.3832/ifor0957-006"],["dc.identifier.gro","3149269"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5927"],["dc.language.iso","en"],["dc.notes.intern","Kleinn Crossref Import"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","1971-7458"],["dc.title","On the exposure of hemispherical photographs in forests"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0150062"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","PLOS ONE"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Chen, Huafang"],["dc.contributor.author","Yi, Zhuang-Fang"],["dc.contributor.author","Schmidt-Vogt, Dietrich"],["dc.contributor.author","Ahrends, Antje"],["dc.contributor.author","Beckschäfer, Philip"],["dc.contributor.author","Kleinn, Christoph"],["dc.contributor.author","Ranjitkar, Sailesh"],["dc.contributor.author","Xu, Jianchu"],["dc.date.accessioned","2017-09-07T11:47:05Z"],["dc.date.available","2017-09-07T11:47:05Z"],["dc.date.issued","2016"],["dc.identifier.doi","10.1371/journal.pone.0150062"],["dc.identifier.gro","3149256"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12927"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5913"],["dc.notes.intern","Kleinn Crossref Import"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","public"],["dc.notes.submitter","chake"],["dc.publisher","Public Library of Science (PLoS)"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Pushing the Limits: The Pattern and Dynamics of Rubber Monoculture Expansion in Xishuangbanna, SW China"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","iForest - Biogeosciences and Forestry"],["dc.bibliographiccitation.lastpage","5"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Nölke, Nils"],["dc.contributor.author","Beckschäfer, Philip"],["dc.contributor.author","Kleinn, Christoph"],["dc.date.accessioned","2017-09-07T11:47:05Z"],["dc.date.available","2017-09-07T11:47:05Z"],["dc.date.issued","2014"],["dc.identifier.doi","10.3832/ifor1129-007"],["dc.identifier.gro","3149254"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5911"],["dc.notes.intern","Kleinn Crossref Import"],["dc.notes.status","public"],["dc.notes.submitter","chake"],["dc.publisher","Italian Society of Sivilculture and Forest Ecology (SISEF)"],["dc.relation.issn","1971-7458"],["dc.title","Thermal canopy photography in forestry - an alternative to optical cover photography"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","13764"],["dc.bibliographiccitation.issue","24"],["dc.bibliographiccitation.journal","Ecology and Evolution"],["dc.bibliographiccitation.lastpage","13775"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Chesters, Douglas"],["dc.contributor.author","Beckschäfer, Philip"],["dc.contributor.author","Orr, Michael C."],["dc.contributor.author","Adamowicz, Sarah J."],["dc.contributor.author","Chun, Kwok‐Pan"],["dc.contributor.author","Zhu, Chao‐Dong"],["dc.date.accessioned","2020-12-10T14:06:04Z"],["dc.date.available","2020-12-10T14:06:04Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1002/ece3.5795"],["dc.identifier.eissn","2045-7758"],["dc.identifier.issn","2045-7758"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17118"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/69766"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Climatic and vegetational drivers of insect beta diversity at the continental scale"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","20150275"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1694"],["dc.bibliographiccitation.journal","Philosophical Transactions of the Royal Society B: Biological Sciences"],["dc.bibliographiccitation.lastpage","8"],["dc.bibliographiccitation.volume","371"],["dc.contributor.author","Drescher, Jochen"],["dc.contributor.author","Rembold, Katja"],["dc.contributor.author","Allen, Kara"],["dc.contributor.author","Beckschäfer, Philip"],["dc.contributor.author","Buchori, Damayanti"],["dc.contributor.author","Clough, Yann"],["dc.contributor.author","Faust, Heiko"],["dc.contributor.author","Fauzi, Anas M."],["dc.contributor.author","Gunawan, Dodo"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Irawan, Bambang"],["dc.contributor.author","Jaya, I. Nengah Surati"],["dc.contributor.author","Klarner, Bernhard"],["dc.contributor.author","Kleinn, Christoph"],["dc.contributor.author","Knohl, Alexander"],["dc.contributor.author","Kotowska, Martyna M."],["dc.contributor.author","Krashevska, Valentyna"],["dc.contributor.author","Krishna, Vijesh V."],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Lorenz, Wolfram"],["dc.contributor.author","Meijide, Ana"],["dc.contributor.author","Melati, Dian Nuraini"],["dc.contributor.author","Nomura, Miki"],["dc.contributor.author","Pérez-Cruzado, César"],["dc.contributor.author","Qaim, Matin"],["dc.contributor.author","Siregar, Iskandar Z."],["dc.contributor.author","Steinebach, Stefanie"],["dc.contributor.author","Tjoa, Aiyen"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Wick, Barbara"],["dc.contributor.author","Wiegand, Kerstin"],["dc.contributor.author","Kreft, Holger"],["dc.contributor.author","Scheu, Stefan"],["dc.date.accessioned","2017-08-25T10:13:33Z"],["dc.date.available","2017-08-25T10:13:33Z"],["dc.date.issued","2016"],["dc.description.abstract","Tropical lowland rainforests are increasingly threatened by the expansion of agriculture and the extraction of natural resources. In Jambi Province, Indonesia, the interdisciplinary EFForTS project focuses on the ecological and socio-economic dimensions of rainforest conversion to jungle rubber agroforests and monoculture plantations of rubber and oil palm. Our data confirm that rainforest transformation and land use intensification lead to substantial losses in biodiversity and related ecosystem functions, such as decreased above- and below-ground carbon stocks. Owing to rapid step-wise transformation from forests to agroforests to monoculture plantations and renewal of each plantation type every few decades, the converted land use systems are continuously dynamic, thus hampering the adaptation of animal and plant communities. On the other hand, agricultural rainforest transformation systems provide increased income and access to education, especially for migrant smallholders. Jungle rubber and rubber monocultures are associated with higher financial land productivity but lower financial labour productivity compared to oil palm, which influences crop choice: smallholders that are labour-scarce would prefer oil palm while land-scarce smallholders would prefer rubber. Collecting long-term data in an interdisciplinary context enables us to provide decision-makers and stakeholders with scientific insights to facilitate the reconciliation between economic interests and ecological sustainability in tropical agricultural landscapes."],["dc.identifier.doi","10.1098/rstb.2015.0275"],["dc.identifier.fs","619787"],["dc.identifier.gro","3150104"],["dc.identifier.pmid","27114577"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14226"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6835"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | A | A03: Untersuchung von Land-Atmosphäre Austauschprozesse in Landnutzungsänderungs-Systemen"],["dc.relation","SFB 990 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.relation","SFB 990 | B | B05: Land use patterns in Jambi - quantification of structure, heterogeneity and changes of vegetation and land use as a basis for the explanation of ecological and socioeconomic functions"],["dc.relation","SFB 990 | B | B08: Struktur und Funktion des Zersetzersystems in Transformationssystemen von Tiefland-Regenwäldern"],["dc.relation","SFB 990 | B | B09: Oberirdische Biodiversitätsmuster und Prozesse in Regenwaldtransformations-Landschaften"],["dc.relation","SFB 990 | B | B10: Landschaftsbezogene Bewertung der ökologischen und sozioökonomischen Funktionen von Regenwald- Transformationssystemen in Sumatra (Indonesien)"],["dc.relation","SFB 990 | C | C07: Einflussfaktoren von Landnutzungswandel und sozioökonomische Auswirkungen für ländliche Haushalte"],["dc.relation","SFB 990 | Z | Z02: Central Scientific Support Unit"],["dc.relation.issn","0962-8436"],["dc.relation.orgunit","Abteilung Ökosystemmodellierung"],["dc.relation.orgunit","Department für Agrarökonomie und Rurale Entwicklung"],["dc.relation.orgunit","Abteilung Bioklimatologie"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Ecological and socio-economic functions across tropical land use systems after rainforest conversion"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

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