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The Plant Macrofoss...
The Plant Macrofossil Record of Past Lake-Level Changes
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Hannon, G (författare)
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- Gaillard, Marie-Jose (författare)
- Högskolan i Kalmar,Naturvetenskapliga institutionen
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(creator_code:org_t)
- 1997
- 1997
- Engelska.
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Ingår i: Journal of Paleolimnology. - 0921-2728 .- 1573-0417. ; 18:1, s. 15-28
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Plant-macrofossil analysis is one of the most useful biostratigraphical methods for the reconstruction of former lake-level changes. The distribution of submerged, floating-leaved and emergent lake-shore vegetation is mainly dependant on water depth, but water chemistry and nutrient status must also be taken into account when interpreting water-level changes. Lake-level studies should be based on the investigation of several littoral cores along a transect perpendicular to the lake-shore. Multiple cores are essential for separating genuine lake-level changes from other processes influencing the plant-macrofossil record. Physical analyses of sediment stratigraphy provide important additional information to the plant-fossil record, because natural infilling processes and erosion from the catchment must be distinguished from climatic events causing a change in the water level. Here we review several important concepts, including suitability of lakes for lake-level study, the degree of detail required in the analysis, and macrofossil records of lake-level changes, and illustrate those concepts by examples from southern Sweden and Minnesota. We discuss how to reconcile alternative hypotheses for the stratigraphic changes seen in the macrofossil assemblages.
Nyckelord
- Paleoecology
- Paleoekologi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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