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Environmental management scenarios: Ecological implications

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Abstract

The measure of whether a management scenario is capable of establishing regional-scale ecosystem sustainability is the degree to which it recovers the historical characteristics of the regional landscape mosaic. This study examines the ability of alternate management scenarios to recover the defining ecological features of the Everglades and South Florida landscape. Five conceptual scenarios are evaluated for recovering and sustaining the ecological characteristics of the wetland systems in South Florida. First, the regional-scale physical characteristics are identified that created and supported the major organizing and driving forces in the predrainage Everglades and Big Cypress basins. Eight hypotheses are proposed to explain how human-caused modifications to these defining characteristics have been responsible for the substantial level of ecological deterioration that has been documented in South Florida wetlands during the last century. The restoration scenarios are evaluated on their proposed ability to correct the physical and biological problems identified by the hypotheses. Our assessment of the five scenarios shows that all would improve the problems addressed by the eight hypotheses, as all could more effectively move increased volumes of water across broader expanses of contiguous wetlands than do existing management programs. This would result in longer hydroperiods over larger areas, reflecting historical patterns. Two of the scenarios would be successful in increasing flows into Florida Bay and the Gulf coast estuaries because removing internal structures increases the spatial extent of the upstream areas that could be devoted to natural hydropatterns.

The benefits of eastern boundary buffer zones include improved flow into the Taylor Slough basin. Using Lake Okeechobee as a site for increased water storage, followed by the addition of eastern buffer zones and portions of the Everglades Agricultural Area, would produce increased flexibility in providing the storage capacity required to meet sustainability goals. Scenarios with maximum areas of buffer not only are more successful in reducing groundwater seepage losses to the east but also are more likely to reduce the level of nutrients and other contaminants entering the natural wetlands.

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Authors and Affiliations

  1. South Florida Water Management District, Office of the Executive Director, 3301 Gun Club Road, P.O. Box 24680, West Palm Beach, FL, 33416-4680, USA

    John C. Ogden

  2. U.S. Dept. of Commerce, NOAA/National Marine Fisheries Service, Miami, FL, 33149, USA

    Joan A. Browder

  3. Center for Marine and Environmental Analyses, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, 33149, USA

    John H. Gentile

  4. Department of Zoology, University of Florida, Gainesville, FL, 32611, USA

    Lance H. Gunderson

  5. Everglades National Park, SFNRC, 40001 State Road 9336, Homestead, FL, 33034, USA

    Robert Fennema

  6. Division of Applied Marine Physics, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, 33149, USA

    John Wang

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  1. John C. Ogden
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  2. Joan A. Browder
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  3. John H. Gentile
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  4. Lance H. Gunderson
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  5. Robert Fennema
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  6. John Wang
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Ogden, J.C., Browder, J.A., Gentile, J.H. et al. Environmental management scenarios: Ecological implications. Urban Ecosystems 3, 279–303 (1999). https://doi.org/10.1023/A:1009508718195

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