Late Glacial to Holocene coastal changes of SE Rügen Island (Baltic Sea, NE Germany)

Hoffmann, Gösta; Barnasch, Jens

doi:10.1007/s00027-005-0763-8

Cited by 8 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…, Table ). Diagrams from coastal areas and large river valleys were excluded, as Baltic Sea transgressions may have substantially changed relief and substrate patterns since the Younger Dryas (Hoffmann & Barnasch ; Lampe ) and inwashed pollen may obscure the regional pollen signal. In addition, very small sites with prevailing (extra)local pollen deposition were excluded.…”

Section: Methodsmentioning

confidence: 99%

Younger Dryas cold stage vegetation patterns of central Europe – climate, soil and relief controls

Theuerkauf

Joosten

2012

Boreas

View full text Add to dashboard Cite

In the north Atlantic region the final period of the last ice age saw abrupt shifts between near present‐day warm and near ice age cold conditions, ending with the cold Younger Dryas. The effects of the cold periods may have been more severe in the vicinity of the Atlantic Ocean than in continental Europe. We use pollen percentage and influx data combined with data on substrate and relief to reconstruct spatially explicit vegetation composition, patterns and development during the Younger Dryas, with special focus on to the forest/non‐forest transition across NE Germany. Opposing trends, such as birch pollen percentages sharply increasing but accumulation rates sharply decreasing northwards, underline pitfalls in the interpretation of pollen percentage data in tree‐line situations. The combined approach reveals a sharp ecotone. Pine declined on northern sites, possibly because of permafrost formation, but was hardly affected in the south. Birch also declined in the south, possibly because of the severe winter cold. Cold‐adapted trees did not enter forest gaps. The cooling had little impact on herbal vegetation. Steppe elements (grasses, Artemisia) were largely restricted to south‐exposed slopes and did not benefit from the cooling – patches of steppe vegetation were even less abundant than during the preceding warm periods. The approach of combining fossil pollen data, including accumulation rates, with data on the contemporary distribution of substrate and relief allowed unprecedented spatial resolution to be reached in the reconstruction of Younger Dryas vegetation patterns.

show abstract

Section: Methodsmentioning

confidence: 99%

Younger Dryas cold stage vegetation patterns of central Europe – climate, soil and relief controls

Theuerkauf

Joosten

2012

Boreas

View full text Add to dashboard Cite

show abstract

“…yr bp ; Merkt & Müller, 1999). The test set excludes pollen diagrams from coastal areas and large river valleys, where Baltic Sea transgressions since the Allerød may have substantially changed substrate distributional patterns (Hoffmann & Barnasch, 2005; Lampe, 2005) or where pollen influx from rivers may have influenced the pollen assemblages. Also excluded are sites for which lithology or macrofossil content indicate that they might have been peatlands during the Allerød and hence may have supported a local vegetation of Pinus or Betula (Michaelis, 2002).…”

Section: Methodsmentioning

confidence: 99%

Substrate dependency of Lateglacial forests in north‐east Germany: untangling vegetation patterns, ecological amplitudes and pollen dispersal in the past by downscaling regional pollen

Theuerkauf¹,

Joosten

2009

Journal of Biogeography

View full text Add to dashboard Cite

Aim Palynology has revealed that during the Lateglacial Allerød period, Pinus and Betula dominated the forests of north-east Germany. Because of implicit restrictions, however, palynology fails to reconstruct in detail the distributional patterns and whether monospecific or mixed forests prevailed. Here we test the hypothesis that the distributional patterns of Pinus and Betula were largely determined by substrate.Location Fifteen sites in north-east Germany.Methods As pollen data reflect the abundance of taxa around a sample site, our hypothesis implies that the abundance of e.g. Pinus pollen should reflect the abundance of substrate types that are favoured by Pinus. (In order to differentiate clearly between taxa and pollen types, the latter are displayed in small capitals.) We analysed the percentage of Pinus and Betula pollen from an interval in the Allerød, and their relationship to the present-day proportion of the two dominant substrate types (sand and boulder clay). The substrate proportion was determined in rings from 1 to 50 km around all sites, using four distance-weighting functions.Results Pollen percentages of Pinus are linearly related to the proportion of sand, and Betula percentages to the proportion of boulder clay. The highest coefficients of determination (r 2 = 0.89 and 0.91, respectively) were observed for radii of c. 30 km, with distance weighting by 1 and 1/d. Main conclusionsThe present-day distributional pattern of substrate types strongly indicates the distributional pattern of Pinus and Betula in north-east Germany in the Allerød. Assuming that the pattern of substrates remained broadly constant, Pinus dominated on sand and Betula on boulder clay. Our new method thus enables us to refine significantly the reconstruction of habitat characteristics and distributional patterns of taxa in the Lateglacial and Holocene, independent of their present-day ecological amplitudes. The good performance of the distance-weighting functions 1 and 1/d indicates that the pollen source area of a site has rather discrete boundaries determined by convective air movements during daytime. Within these boundaries, pollen is evenly distributed over various distances. This implies that light pollen types are transported further than predicted by Sutton's equation on particle dispersal.

show abstract

Holocene Evolution of the Southern Baltic Sea Coast and Interplay of Sea-Level Variation, Isostasy, Accommodation and Sediment Supply

Lampe

Naumann

Meyer

et al. 2011

The Baltic Sea Basin

View full text Add to dashboard Cite

Late Glacial to Holocene coastal changes of SE Rügen Island (Baltic Sea, NE Germany)

Cited by 8 publications

References 13 publications

Younger Dryas cold stage vegetation patterns of central Europe – climate, soil and relief controls

Younger Dryas cold stage vegetation patterns of central Europe – climate, soil and relief controls

Substrate dependency of Lateglacial forests in north‐east Germany: untangling vegetation patterns, ecological amplitudes and pollen dispersal in the past by downscaling regional pollen

Holocene Evolution of the Southern Baltic Sea Coast and Interplay of Sea-Level Variation, Isostasy, Accommodation and Sediment Supply

Contact Info

Product

Resources

About