Journal ArticleDOI
The selection of sites for paleovegetational studies.
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In this article, a model that describes the relationship between basin size and pollen source area and predicts the proportions of local, extralocal, and regional pollen sampled by lake basins of different size is presented.About:
This article is published in Quaternary Research.The article was published on 1981-07-01. It has received 930 citations till now. The article focuses on the topics: Pollen core.read more
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Pollen representation of vegetation in Quaternary sediments: theory and method in patchy vegetation.
TL;DR: The model demonstrates that when the background pollen is consistent, this proportion is adequate to reflect local vegetation composition, and linear regression and maximum likelihood methods do not provide accurate estimations of pollen productivity and background pollen loading.
Journal ArticleDOI
Pollen Representation, Source Area, and Basin Size: Toward a Unified Theory of Pollen Analysis
TL;DR: In this article, the concept of pollen source area and relative pollen representation is quantified by means of a simple theoretical model. But the model does not consider the effect of the number of sources on the amount of pollen remaining airborne at increasing distances from single sources.
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Quaternary refugia of north european trees
TL;DR: The survival of these trees in southern Europe through a warm stage may be at least as important for long-term Qua- ternary survival in Europe as survival during a cold stage.
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Microscopic charcoal as a fossil indicator of fire
TL;DR: A review of the use of charcoal analysis in palaeoecological reconstructions can be found in this paper, with a special emphasis on analytical techniques and problems of interpretation, as well as theoretical models of dispersal and potential problems associated with postdepositional mixing.
Journal ArticleDOI
Theory of quantitative reconstruction of vegetation I: pollen from large sites REVEALS regional vegetation composition:
TL;DR: In this paper, a model called REVEALS was proposed to estimate regional vegetation composition using pollen from lakes that have small site-to-site variations of pollen assemblages even if vegetation is highly heterogeneous.
References
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Journal ArticleDOI
A history of fire and vegetation in northeastern Minnesota as recorded in lake sediments
TL;DR: A detailed record of the past 1000 yr shows that the average frequency of fire is approximately 60-70 yr, with a range of about 20-100 yr as discussed by the authors, which is consistently higher than that for the last 500 yr, although the fire frequency for the two periods was not appreciably different.
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Changing patterns in the Holocene pollen record of northeastern North America: A mapped summary
TL;DR: In this article, isopoll maps, difference maps, and isochrone maps are used in order to examine the changing patterns within the data set and to study broad-scale and long-term vegetational dynamics.
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Late- and Postglacial Climatic Change in the Northern Midwest, USA: Quantitative Estimates Derived from Fossil Pollen Spectra by Multivariate Statistical Analysis
Thompson Webb,Reid A. Bryson +1 more
TL;DR: Canonical correlation analysis has been used to reconstructing quantitative time series of past climatic variables during the last 15,000 years from fossil pollen spectra collected at three sites in the northern Midwest.
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Evidence for differential pollen preservation in late quaternary sediments in Minnesota
TL;DR: The state of preservation of fossil pollen grains in a variety of sediment types can be described by observing the proportions of grains in each of six preservation classes: (1) corroded, (2) degraded, (3) crumpled and exine thinned, (4) broken, (5) broken and well-preserved) as discussed by the authors.