Ecosystem History: Terrestrial and Fresh-Water Ecosystems of southern FloridaEntry ID: USGS_SOFIA_dawmet
Abstract: Analysis of 209 pollen assemblages from surface samples in ten vegetation types in the Florida Everglades form the basis to identify wetland sub-environments from the pollen record. This calibration dataset makes it possible to infer past trends in hydrology and disturbance regime based on pollen assemblages preserved in sediment cores. Pollen assemblages from sediment cores collected in different ... vegetation types throughout the Everglades provide evidence on wetland response to natural fluctuations in climate as well as impacts of human alteration of Everglades hydrology. Sediment cores were located primarily in sawgrass marshes, cattail marshes, tree islands, sawgrass ridges, sloughs, marl prairies, and mangroves. The datasets contain raw data on pollen abundance as well as pollen concentration (pollen grains per gram dry sediment).
This project is designed to document the terrestrial ecosystem history of south Florida and is collaborating with other projects at the USGS and other agencies on Florida Bay, Biscayne Bay, and the Buttonwood Embankment. The specific goals of the project are 1) document the patterns of floral and faunal change at sites throughout southern Florida over the last 150 years; 2) determine whether changes occurred throughout the entire region or whether they were localized; 3) examine the floral and faunal history of the region over the last few millennia; 4) determine the baseline level of variability in the communities prior to significant human activity in the region; and 5) determine whether the fire frequency, extent, and influence can be quantified, and if so, document the fire history for sites in the region. Data generated from this project will be integrated with data from other projects to provide biotic reconstructions for the area at selected time slices and will be useful in testing ecological models designed to predict floral and faunal response to changes in environmental parameters.
Data Set Citation
Dataset Originator/Creator: Debra A. Willard
Dataset Title: Ecosystem History: Terrestrial and Fresh-Water Ecosystems of southern Florida
Dataset Release Date: 2006
Data Presentation Form: spreadsheetOnline Resource: http://sofia.usgs.gov/projects/eh_fleco/
Start Date: 1994-01-01Stop Date: 2007-12-31
Access Constraints None
Use Constraints None. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data.
Data Set Progress
Distribution Format: MS Excel
Role: TECHNICAL CONTACT
Phone: (703) 648-5320
Fax: (703) 648-6953
Email: dwillard at geochange.er.usgs.gov
Email: dwillard at mailrvag2.er.usgs.gov
MS 926A National Center U.S. Geological Survey
Province or State: VA
Postal Code: 20192
Role: DIF AUTHOR
Email: alicia.m.aleman at nasa.gov
Goddard Space Flight Center Code 610.2
Province or State: MD
Postal Code: 20771
Willard, Debra A., Weimer, Lisa M., 997, Palynological Census Data from Surface Samples in South Florida, USGS Open-File Report, 97-0867, Reston, VA, U.S. Geological Survey.
Willard, Debra A., 1997, Pollen Census Data from Southern Florida: Sites Along an Nutrient Gradient in Water Conservation Area 2A, USGS Open-File Report, 97-0497, ... Reston, VA, U.S. Geological Survey.
Willard, Debra A., Bernhardt, Christopher E.; Weimer, Lisa (deceased); Gamez, Desire; Cooper, Sherri R.; Jensen, Jennifer, 2004, Atlas of Pollen and Spores of the Florida Everglades, Palynology, 28, Arlington, TX, American Association of Stratigraphic Palynologists, Posted with permission from Palynology and the American Association of Stratigraphic Palynologists.
Marshall, Curtis H., Pielke, Roger A., Sr.; Steyaert, Louis T.; Willard, Debra A., 200401, The Impact of Anthropogenic Land-Cover Change on the Florida Peninsula Sea Breezes and Warm Season Sensible Weather, Monthly Weather Review, v. 132, n. 1, Boston, MA, American Meterological Society, Permission to post a copy of this work on the SOFIA server has been provided by the American Meterological Society.
Willard, Debra A., Weimer, Lisa M.; Riegel, W. L., 2001, Pollen assemblages as paleoenvironmental proxies in the Florida Everglades, Review of Palaeobotany and Palynology, v. 113, n. 4, Amsterdam, The Netherlands,Elsevier Science B.V., The full article is available via journal subscription or single article purchase. The abstract may be viewed on the Science Direct website by selecting the volume and issue number.
Willard, D. A., Holmes, C. W.; Korvela, M. S.; Mason, D.; Murray, J. B.; Orem, W. H.; Towles, T., 200302, Paleoecological Insights on Fixed Tree Island Development in the Florida Everglades: I. Environmental Controls, Dordrecht, Netherlands, Kluwer Academic Publishers, in Tree Islands of the Everglades, Sklar, F. H. and van der Valk A. (editors).
Willard, D. A., Orem, W. H., 2003, Tree Islands of the Florida Everglades - A Disappearing Resource, U.SGS Open-File Report, 03-26, Reston, VA, U.S. Geological Survey.
Bernhardt, C. E., Willard, D. A.; Marot, M.; Holmes, C. W., 2004, Anthropogenic and natural variation in Ridge and Slough pollen assemblages, USGS Open-File Report, 2004-1448, Reston, VA, U.S. Geological Survey.
Willard, D. A., Holmes, C. W.; Weimer, L. M., 2001, The Florida Everglades Ecosystem: Climatic and Anthropogenic Impacts over the Last Two Millenia, Bulletins of American Paleontology, v. 361, Ithica, NY, Paleontological Research Institute, in Paleoecology of South Florida, B. R. Wardlaw, ed.
Grimm, E. C., 1992, CONISS: a Fortran 77 program for stratigraphically constrained cluster analysis by the mothod of incremental sum of squares, Computers & Geosciences, v. 13, issue 1, Amsterdam, The Netherlands, Elsevier Science, Ltd. The abstract may be viewed online at the Science Direct website. The full article is available for purchase from the Science Direct website.
Traverse, A., 1988, Paleopalynology, Boston, MA, Unwin Hyman.
Stockmarr, J., 1971, Tablets with spores used in absolute pollen analysis, Pollen et Spores, v. 13, Paris, France, Museum national d'histoire naturelle.
Overpeck, J. T., Webb, III, T.; Prentice, I. C., 1985, Quantitative interpretation of fossil pollen spectra: Dissimilarity coefficients and the method of modern analogs, Quaternary Research, v 23, issue 1, Amsterdam, Netherlands, Elsevier Science, Ltd., The abstract may be viewed online at the Science Direct website. The full article is available for purchase from the Science Direct website.
Willard, D. A., 2004, Tree Islands of the Florida Everglades - Long-term stability and response to hydrologic change, USGS Fact Sheet, 2004-3095, Reston, VA, U.S. Geological Survey.
Bernhardt, C.E, Willard, D. A., 2007, Marl prairie vegetation response to 20th century hydrologic change, USGS Open-File Report, 2006-1355, Reston, VA, U.S. Geological Survey.
Willard, D. A., Cronin, T. M., 2007, Paleoecology and ecosystem restoration: case studies from Chesapeake Bay and the Florida Everglades, Frontiers in Ecology and the Environment, vol. 5, issue 9, Ithica, NY, Ecological Society of America, The full article is available via journal subscription or single article purchase. The abstract may be viewed at the URL below by selecting the article.
Willard, D. A., Bernhardt, C. E.; Holmes, C. W.; Landacre, B.; Marot, M., 2006, Response of Everglades tree islands to environmental change, Ecological Monographs, v. 76, n. 4, Ithica, NY, Ecological Society of America, The full article is available via journal subscription or single article purchase. The abstract may be viewed at the URL below by selecting the article. http://www.esajournals.org/perlserv/?request=get-toc&issn=0012-9615...
Langeland, K., 1990, Exotic Woody Plant Control Florida, Circular, 868, Florida, Florida Coooperative Extension Service.
Flynn, W. W., 1968, the determination of low levels of polonium-210 in environmental materials, Analytica Chimica Acta, v. 43, Amsterdam, The Netherlands, Elsevier B. V., The abstract may be viewed online at the Science Direct website. The full article is available for purchase from the Science Direct website.
Stuiver, M., Reimer, P. J., 1993, Extended 14C database and revised CALIB 3.0 14C age calibration program, Radiocarbon, v. 35, n. 1.
Talma, A. S., Vogel, J. C., 1993, A simplified approach to calibrating C14 dates, Radiocarbon, v. 35, n. 2, Tucson, AZ, University of Arizona.
Benninghoff, W. S.,1962, Calculation of pollen and spore density in sediments by addition of exotic pollen in known quantities, Pollen et Spores, v. 4, Paris, France, Museum national d'histoire naturelle.
Maher, L. J., Jr, 1981, Statistics for microfossil concentration measurements employing samples spiked with marker, Review of Palaeobotany and Palynology, v. 32, issues 2-3, Amsterdam, The Netherlands, Elsevier Science B. V., The full article is available via journal subscription or single article purchase. The abstract may be viewed on the Science Direct website by selecting the volume and issue number.
Stockmarr, J., 1973, Determination of spore concentration with an electronic particle counter, Arbog, v. 1972, p. 87-89, Copenhagen, Denmark, Danmarks Geologiske Undersogelse.
Vogel, J. C., Fuls, A.; Visser, E,; Becker, B., 1993, Pretoria Calibration Curve for Short Lived Samples, Radiocarbon, v. 35, n. 1, Tucson, Arizona, University of Arizona.
Creation and Review Dates
DIF Creation Date: 2008-04-28
Last DIF Revision Date: 2009-06-02