Part of a paper in prep looking at non-analogue vegetation in the past.
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Goringetal_NonAnalogueAssemblages.Rmd
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README.md
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README.md

Community dissassembly: Looking for rapid regional turnover in the pollen record and the development of non-analogue vegetation.

Paper in progress

This code is part of an ongoing research project to attempt to understand the ecological and climatic associates of non-analogue vegetation. Traditionally researchers have looked at non-analogue associations with regards to modern pollen assemblages. This paper uses the neotoma package (hosted here) to download records from the Neotoma Paleoecological Database and then to check for the presence of non-analogue pollen assembages between 500 year time periods. The modern data will be used to establish cut-offs or quantiles for dissimilarity measures, but the real measures will be within samples between time periods.

Development by

Simon Goring - University of Wisconsin-Madison, Department of Geography

Currently implemented in code:

  • README - This readme file.
  • load_datasets.R - uses the neotoma package get_download to return all pollen cores using the Neotoma API.
  • all_sites_compiled.RData - all of the pollen sites from Neotoma have been compiled into a single large table using the load_datasets.R file.

Coming soon

  • Figures outlined in RMarkdown
  • Text to accompany figures
  • Code implementation of modern and paleo-dissimilarities.