By Debra A. Willard and Lisa M. Weimer
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Introduction
Understanding the distribution and abundance of pollen of various plants in modern
sediments and their relationship to source plant distribution and abundance is critical for accurate
interpretation of past vegetational patterns reconstructed from down-core sediments. Such
evidence is particularly important for work supporting restoration efforts, in which palynological
and paleobotanical analyses are used to reconstruct vegetational response to environmental
changes and to guide restoration goals for a sustainable ecosystem. Such work is ongoing in
south Florida, and this report summarizes the preliminary results from the first 28 of 80 surface
samples collected throughout the historic Everglades, from the Water Conservation Areas south
to Florida Bay. These data form a regional database of pollen distribution and abundance in
surface sediments in the major vegetational types over most of the historic Everglades and
supplements earlier work by Riegel (1965), covering an area from the Shark River Slough into
Whitewater Bay. Such data have been used in other studies to identify modern analogs for down-core
assemblages, improving the accuracy of vegetational interpretation from the pollen record
(Overpeck, and others, 1985, 1992). Ultimately, this complete dataset will be used for statistical
comparison with down-core pollen assemblages from the historic Everglades to determine
which, if any, modern samples are close modern analogs to those deposited over the last few
thousand years. This report presents assemblage data generated to date and describes the
relationship between taxonomic abundance in the pollen record and standing vegetation based on
this initial dataset.
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Last Updated 05.17.99