Giesecke, Thomas

[["dc.bibliographiccitation.firstpage","259"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Vegetation History and Archaeobotany"],["dc.bibliographiccitation.lastpage","270"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Pidek, Irena A."],["dc.contributor.author","Svitavska-Svobodova, Helena"],["dc.contributor.author","van der Knaap, Willem O."],["dc.contributor.author","Noryskiewicz, Agnieszka M."],["dc.contributor.author","Filbrandt-Czaja, Anna"],["dc.contributor.author","Noryskiewicz, Bozena"],["dc.contributor.author","Latalowa, Malgorzata"],["dc.contributor.author","Zimny, Marcelina"],["dc.contributor.author","Swieta-Musznicka, Joanna"],["dc.contributor.author","Bozilova, Elissaveta"],["dc.contributor.author","Tonkov, Spassimir"],["dc.contributor.author","Filipova-Marinova, Mariana V."],["dc.contributor.author","Poska, Anneli"],["dc.contributor.author","Giesecke, Thomas"],["dc.contributor.author","Gikov, Aleksander"],["dc.date.accessioned","2018-11-07T08:41:10Z"],["dc.date.available","2018-11-07T08:41:10Z"],["dc.date.issued","2010"],["dc.description.abstract","Annual pollen-accumulation rates (PAR) of Fagus (beech) obtained within the framework of the Pollen Monitoring Programme (PMP) were analyzed in pollen traps along a N-S transect from the Baltic Sea to the Black Sea in different European vegetation units. The study regions are situated in the lowlands of northern Poland, the uplands of SE Poland, the Czech Krkonoe Mts, the Czech umava Mts, the Swiss Jura Mts, the Swiss Alps, the Bulgarian Rila Mts and the Bulgarian Strandzha Mts. Most time series are 10 or 11 years long, some are 5-16 years long. Inter-annual fluctuations in Fagus PAR were analyzed and compared with seed mast years. Years with high Fagus PAR and others with low Fagus PAR occurred most frequently in parallel within each region and often in two neighbouring regions. 2006 was exceptional as it had a very high Fagus sylvatica pollen deposition in all study regions and it was also a mast year. In Bulgaria, the trend in the 5 years of Fagus orientalis PAR in the Strandzha Mts differed from that of F. sylvatica PAR in the Rila Mts. Aiming at establishing the relationship between average Fagus PAR and tree cover, differences in Fagus PAR (averaged per pollen trap) were related in each region to the proportion of beech trees in the vegetation within 2 km of the pollen traps, the distance to the nearest pollinating Fagus tree, regional or local presence of beech forests, the degree of landscape openness, and the size of forest opening in which a trap is situated. Average Fagus PAR was found to track the regional abundance of beech trees in the vegetation, not the distance of the nearest Fagus tree. Regional occurrence of beech-dominated forests was reflected by a Fagus PAR of ca. 1,400 grains cm(-2) year(-1), local abundance very close to pollen traps by ca. 2,400 grains, small patches of forest with admixture of Fagus by ca. 170-220 grains, and scarcity or absence of Fagus by ca. 40 grains or less."],["dc.description.sponsorship","PMP Sheila Hicks"],["dc.identifier.doi","10.1007/s00334-010-0248-0"],["dc.identifier.isi","000280825200003"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7644"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19409"],["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","Variation in annual pollen accumulation rates of Fagus along a N-S transect in Europe based on pollen traps"],["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","271"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Vegetation History and Archaeobotany"],["dc.bibliographiccitation.lastpage","283"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Pardoe, Heather S."],["dc.contributor.author","Giesecke, Thomas"],["dc.contributor.author","van der Knaap, Willem O."],["dc.contributor.author","Svitavska-Svobodova, Helena"],["dc.contributor.author","Kvavadze, Eliso V."],["dc.contributor.author","Panajiotidis, Sampson"],["dc.contributor.author","Gerasimidis, Achilles"],["dc.contributor.author","Pidek, Irena A."],["dc.contributor.author","Zimny, Marcelina"],["dc.contributor.author","Swieta-Musznicka, Joanna"],["dc.contributor.author","Latalowa, Malgorzata"],["dc.contributor.author","Noryskiewicz, Agnieszka M."],["dc.contributor.author","Bozilova, Elissaveta"],["dc.contributor.author","Tonkov, Spassimir"],["dc.contributor.author","Filipova-Marinova, Mariana V."],["dc.contributor.author","van Leeuwen, Jacqueline F. N."],["dc.contributor.author","Kalnina, Laimdota"],["dc.date.accessioned","2018-11-07T08:41:10Z"],["dc.date.available","2018-11-07T08:41:10Z"],["dc.date.issued","2010"],["dc.description.abstract","This paper compares pollen spectra derived from modified Tauber traps and moss samples from a selection of woodland types from Bulgaria, the Czech Republic, Georgia, Greece, Poland, Switzerland and Wales. The study examines the representation of individual taxa in the two sampling media and aims to ascertain the duration of pollen deposition captured by a moss. The latter aim was pursued through the calculation of dissimilarity indexes to assess how many years of pollen deposited in a pollen trap yield percentage values that are most similar to those obtained from the moss. The results are broadly scattered; the majority of moss samples being most similar to several years of pollen deposition in the adjacent trap. For a selection of samples, a comparison of the pollen accumulation rate in pollen traps with the pollen concentration in the moss per unit surface indicates that the entrapment and/or preservation of individual pollen types in the moss differ from that in the pollen trap. A comparison of the proportion of different taxa in the moss with the pollen spectrum of 2 years of pollen deposition in the trap also revealed large differences. There is a tendency for bisaccate grains such as Pinus and Picea to have a higher representation in moss than in traps but there is considerable regional variation. The results indicate that pollen proportions from moss samples often represent the pollen deposition of one area over several years. However, bisaccate pollen grains tend to be over-represented in moss samples compared to both pollen traps and, potentially, lake sediments."],["dc.identifier.doi","10.1007/s00334-010-0258-y"],["dc.identifier.isi","000280825200004"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7640"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19410"],["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","Comparing pollen spectra from modified Tauber traps and moss samples: examples from a selection of woodlands across Europe"],["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","247"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Vegetation History and Archaeobotany"],["dc.bibliographiccitation.lastpage","258"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Giesecke, Thomas"],["dc.contributor.author","Fontana, Sonia L."],["dc.contributor.author","van der Knaap, Willem O."],["dc.contributor.author","Pardoe, Heather S."],["dc.contributor.author","Pidek, Irena A."],["dc.date.accessioned","2018-11-07T08:41:09Z"],["dc.date.available","2018-11-07T08:41:09Z"],["dc.date.issued","2010"],["dc.description.abstract","Pollen monitoring has become a standard investigation method for researchers in several disciplines; among them are Quaternary palynologists, who conduct experiments in order to gain insights that will help to interpret the content of pollen in sediments. A review of the literature shows how these experiments diversified during the 1920s and 1930s with an array of different research questions, ranging from pollination biology to hay fever studies. Quaternary palynologists gained renewed interest with the possibility of radiocarbon dating late Quaternary sediments and obtaining accumulation rates. Also, the comprehensive model of pollen deposition and the pollen budget studies by H. Tauber encouraged researchers to conduct similar experiments using the same type of pollen trap, which became the main trapping device for Quaternary palynologists. The high precipitation in the tropics inspired the development of alternative designs. The equipment used to assess the pollen content in the air has evolved from simple gravity devices to different types of apparatus using a vacuum pump or revolving rods that collect the pollen on impact. Silicone impregnated filters exposed perpendicularly to the wind can also yield a volumetric assessment and have proven useful in areas with a low content of pollen in the air. The literature review is followed by a brief account of the developments which established the basis for the formation of a group of scientists monitoring the pollen deposition at a network of sites using standard pollen traps, the Pollen Monitoring Programme (PMP). Over the last 15 years the network has collected a large dataset, which is now available to answer a number of research questions. A summary of selected regions and environments, for which pollen monitoring results are available, is provided to serve as a complement to the investigations mentioned above and to provide an overview that may stimulate new research."],["dc.identifier.doi","10.1007/s00334-010-0261-3"],["dc.identifier.isi","000280825200002"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/4980"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19408"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0939-6314"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","From early pollen trapping experiments to the Pollen Monitoring Programme"],["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"]]

[["dc.bibliographiccitation.firstpage","285"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Vegetation History and Archaeobotany"],["dc.bibliographiccitation.lastpage","307"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","van der Knaap, Willem O."],["dc.contributor.author","van Leeuwen, Jacqueline F. N."],["dc.contributor.author","Svitavska-Svobodova, Helena"],["dc.contributor.author","Pidek, Irena A."],["dc.contributor.author","Kvavadze, Eliso V."],["dc.contributor.author","Chichinadze, Maia"],["dc.contributor.author","Giesecke, Thomas"],["dc.contributor.author","Kaszewski, Boguslaw Michal"],["dc.contributor.author","Oberli, Florencia"],["dc.contributor.author","Kalnina, Laimdota"],["dc.contributor.author","Pardoe, Heather S."],["dc.contributor.author","Tinner, Willy"],["dc.contributor.author","Ammann, Brigitta"],["dc.date.accessioned","2018-11-07T08:41:11Z"],["dc.date.available","2018-11-07T08:41:11Z"],["dc.date.issued","2010"],["dc.description.abstract","Annual PAR (pollen accumulation rates; grains cm(-2) year(-1)) were studied with modified Tauber traps situated in ten regions, in Poland (Roztocze), the Czech Republic (two regions in Krkonoe, two in umava), Switzerland (4 regions in the Alps), and Georgia (Lagodekhi). The time-series are 10-16 years long, all ending in 2007. We calculated correlations between pollen data and climate. Pollen data are PAR summarized per region (4-7 traps selected per region) for each pollen type (9-14 per region) using log-transformed, detrended medians. Climate data are monthly temperature and precipitation measured at nearby stations, and their averages over all possible 2- to 6-month windows falling within the 20-month window ending with August, just prior to the yearly pollen-trap collection. Most PAR/climate relationships were found to differ both among pollen types and among regions, the latter probably due to differences among the study regions in the habitats of plant populations. Results shared by a number of regions can be summarized as follows. Summer warmth was found to enhance the following year's PAR of Picea, Pinus non-cembra, Larix and Fagus. Cool summers, in contrast, increase the PAR of Abies, Alnus viridis and Gramineae in the following year, while wet summers promote PAR of Quercus and Gramineae. Wetness and warmth in general were found to enhance PAR of Salix. Precipitation was found to be more important for PAR of Alnus glutinosa-type than temperature. Weather did not have an impact on the PAR of Gramineae, and possibly of Cyperaceae in the same year. Care is advised when extrapolating our results to PAR in pollen sequences, because there are large errors associated with PAR from sediments, due to the effects of taphonomy and sedimentation and high uncertainty in dating. In addition, in pollen sequences that have decadal to centennial rather than near-annual resolution, plant-interaction effects may easily out-weigh the weather signal."],["dc.identifier.doi","10.1007/s00334-010-0250-6"],["dc.identifier.isi","000280825200005"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/4978"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19411"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1617-6278"],["dc.relation.issn","0939-6314"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Annual pollen traps reveal the complexity of climatic control on pollen productivity in Europe and the Caucasus"],["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"]]