Behling, Hermann

[["dc.bibliographiccitation.firstpage","83"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Vegetation History and Archaeobotany"],["dc.bibliographiccitation.lastpage","96"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Schueler, Lisa"],["dc.contributor.author","Behling, Hermann"],["dc.date.accessioned","2018-11-07T08:58:57Z"],["dc.date.available","2018-11-07T08:58:57Z"],["dc.date.issued","2011"],["dc.description.abstract","Despite the dominance of grasslands during the last glacial period, especially in South America, the highly uniform morphology of Poaceae pollen grains has so far allowed only very few palynological studies based on Poaceae pollen. In our study we compare two methods of distinguishing between South American grassland ecosystems based on quantitative morphology of Poaceae pollen grains. We investigated data sets from Paramo in southern Ecuador, Campos de Altitude and Campos in south-eastern and southern Brazil as well as data sets from the Pampa in Argentina by measuring the pollen grain length, grain width, pore diameter and annulus width. Firstly we investigated the potential influence of chemical treatment of pollen grains on pollen grain size as well as the measurement setting for defining the boundary conditions for using Poaceae pollen grains in a palaeoecological investigation. Finally the measured pollen grain parameters were analyzed by comparison of average grain length using statistical tests. This approach reveals highly significant differences in average grain size between all grassland ecosystems. Assuming that a certain grain size range can be assigned to a certain Poaceae taxon, conclusions about differences and similarities in taxa composition can be derived. We used two methods of multivariate data analysis. One uses the pollen grain parameters directly for a Principle Component Analysis (PCA). The other is an already established method in grassland ecology which defines parameter based pollen grain types to investigate similarities between grassland ecosystems. Both approaches confirm the results of the grain length analysis. In this work we demonstrate that the method we developed has the potential to provide acquisition of so far inaccessible information on spatial and temporal patterns and dynamics of South American grasslands."],["dc.identifier.doi","10.1007/s00334-010-0265-z"],["dc.identifier.isi","000287141800001"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/6605"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23773"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0939-6314"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Poaceae pollen grain size as a tool to distinguish past grasslands in South America: a new methodological approach"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","702"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","The Holocene"],["dc.bibliographiccitation.lastpage","713"],["dc.bibliographiccitation.volume","24"],["dc.contributor.author","Schueler, Lisa"],["dc.contributor.author","Hemp, Andreas"],["dc.contributor.author","Behling, Hermann"],["dc.date.accessioned","2018-11-07T09:39:25Z"],["dc.date.available","2018-11-07T09:39:25Z"],["dc.date.issued","2014"],["dc.description.abstract","Modern pollen-rain studies are crucial for the calibration and interpretation of fossil pollen records. In East Africa, numerous pollen records provide important insights into the impact of human populations and climate change on tropical ecosystems. However, the confident use of fossil pollen data to reconstruct vegetation and climate dynamics requires well-founded knowledge regarding the relationship between pollen deposition and modern-day vegetation, which is still deficient for large parts of the African continent and non-existent for the tropical East African Mountains. In this study, we investigated the relationship between vegetation and modern pollen-rain along the elevational gradient of Kilimanjaro. We apply multivariate data analysis to assess the relationship between vegetation and modern pollen-rain and quantify the representativeness of forest zones. We further assessed the taxonomic level needed for differentiation between forest zones based on the modern pollen-rain assemblage, biodiversity patterns and pollen and spore drift. In the montane vegetation of Kilimanjaro, it is sufficient to analyse the pollen-rain on plant family level in order to derive the forest zone of the surrounding vegetation. Along this elevational gradient, pollen and spore dispersal is strongly influenced by regional wind patterns, but their deposition reflects the diversity patterns of the surrounding vegetation. This study represents the first statistical analysis of pollen vegetation relationship along an elevational gradient in Africa. Hence, this paper improves confidence in interpretation of palynological records from the tropical East African Mountains and may refine past climate reconstructions for a more accurate comparison of data and modelling."],["dc.description.sponsorship","German Research Foundation (DFG) [BE 2116/15-1]; University of Bayreuth"],["dc.identifier.doi","10.1177/0959683614526939"],["dc.identifier.isi","000337573000007"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13048"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33275"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Sage Publications Ltd"],["dc.relation.issn","1477-0911"],["dc.relation.issn","0959-6836"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Relationship between vegetation and modern pollen-rain along an elevational gradient on Kilimanjaro, Tanzania"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","97"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Vegetation History and Archaeobotany"],["dc.bibliographiccitation.lastpage","108"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Schueler, Lisa"],["dc.contributor.author","Behling, Hermann"],["dc.date.accessioned","2018-11-07T08:58:58Z"],["dc.date.available","2018-11-07T08:58:58Z"],["dc.date.issued","2011"],["dc.description.abstract","During the Quaternary, in particular during glacial times, different grassland ecosystems played a much larger role and had a significantly larger distribution. Little is known yet about past development, biodiversity and dynamics of grassland ecosystems. In this innovative study, we attempt to distinguish between different South American grassland types in space and time based on morphological pollen grain characteristics of Poaceae. For this purpose > 60-80 Poaceae pollen grains of 20 grassland samples were measured using their length, width and pore diameter as well as annulus width. Samples were taken from five sites in wet Paramo vegetation from the Late Pleistocene to the Late Holocene in South Ecuador and from two sites in the south-eastern Brazilian highlands (Campos do Altitude) of the same period. Additionally, we investigated two samples from a Pampa site as well as six samples from one Campos grassland site in southern Brazil from the Late Pleistocene to the Late Holocene. Subsets of samples of the Campos grasslands and of the Paramo were investigated in order to retrieve more detailed information on patterns within these vegetation types. Multivariate data analysis of the complete data set shows changes in taxonomic composition along an elevational gradient in the Paramo grasslands. Our results reveal a highly dynamic development of the individual grassland types; they also provide interesting information on Poaceae taxa composition patterns, development and possibly changes in biodiversity within these ecosystems. Moreover, our data provide an indication about the origin and dynamics of the Campos ecosystems in the southern Brazilian highlands during the Late Pleistocene and the Holocene before and after the onset of human activities."],["dc.identifier.doi","10.1007/s00334-010-0264-0"],["dc.identifier.isi","000287141800002"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/6604"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23774"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0939-6314"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Characteristics of Poaceae pollen grains as a tool to assess palaeoecological grassland dynamics in South America"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]