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Multidisciplinary reconstructions in palaeoecology --
Title
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Title:
Multidisciplinary reconstructions in palaeoecology --
Subtitle
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Subtitle:
the diversity of ways and means
Series
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Series:
Vegetation History and Archaeobotany
Volume
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Volume:
15 (4)
Publication Type
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Publication Type:
Journal
Editor
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Editor:
Felix Bittmann
Issue Editor
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Issue Editor:
Willem O Knaap, van der
Willy Tinner
André F Lotter
Sheila P Hicks
Publisher
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Publisher:
Springer
Year of Publication
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Year of Publication:
2006
Note
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Note:
Is Portmanteau: 1
Source
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Source:
BIAB (The British & Irish Archaeological Bibliography (BIAB))
Relations
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Relations:
URI:
http://www.springerlink.com/content/0939-6314
Created Date
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Created Date:
31 Jul 2007
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Abstract
Multidisciplinary reconstructions in palaeoecology --; the diversity of ways and means
0
Special issue dedicated to Professor Brigitta Amman; contributions include
Multi-proxy studies in palaeolimnology
Hilary H Birks
H J B Birks
235 - 251
multi-proxy studies are becoming increasingly common in palaeolimnology. Eight basic requirements and challenges for a multi-proxy study are outlined in this essay -- definition of research questions, leadership, site selection and coring, data storage, chronology, presentation of results, numerical tools and data interpretation. The nature of proxy data is discussed in terms of physical proxies and biotic proxies. Loss-on-ignition changes and the use of transfer functions are reviewed as examples of problems in the interpretation of data from multi-proxy studies. The importance of pollen analysis and plant macrofossil analysis in multi-proxy studies is emphasised as lake history cannot be interpreted without knowledge of catchment history. Future directions are outlined about how multi-proxy studies can contribute to understanding biotic responses to environmental change
When no pollen does not mean no trees
Sheila P Hicks
253 - 261
the question is addressed of what signal, if any, appears in the pollen record when trees are present in the vegetation without producing pollen or with no pollen being recorded. Four scenarios are envisaged: (i) the number of trees in the landscape are very few and scattered, (ii) the trees are too young to produce pollen, (iii) climate conditions are unfavourable for the trees to produce pollen and (iv) the trees are cut or damaged so that they do not flower. Each of these is considered in terms of pollen accumulation rates (PARs) and present theories and models of pollen dispersal. Examples are provided for the forest limit areas of the northern boreal trees in Finnish Lapland using data of pollen deposition monitored by pollen traps and results from the high temporal resolution (near annual) analyses of peat profiles. The relevance of the results to questions such as finds of spruce macrofossils in the Swedish mountains, the 8200 cal b.p. cold event, the migration of species/vegetation succession, and widespread damage to trees are all considered. It is concluded that although these situations are sometimes `invisible' or misrepresented when pollen assemblages are expressed in the traditional percentage manner, they are often revealed by PARs. The fact that the pollen assemblage reflects a much wider regional area than is often understood can strengthen signals which have a regional impact, such as those which are climate induced, but may obscure events which affect only a limited spatial area or occur as small patches in the landscape
