Ecology and conservation of nekton in freshwater wetlands of southern Florida

 

Goal of research

Florida has a rich and quite colorful cultural history, but a central recurring theme is that waves of settlers moved into an area, chased away previous inhabitants, and busily set about reshaping the landscape to accommodate their ever expanding residential and agricultural activities. South Florida is a prime example of this socioeconomical process. Vast areas of "useless" freshwater wetlands were converted for agricultural and residential use and remaining wetlands were radically re-plumbed to facilitate storage and rapid movement of water across a substantially fragmented wetscape. Since at least the publication of River of Grass in 1947 by Marjory Stoneman Douglas, there has been a profound rethinking of the value of the wetscapes of southern Florida and the world's largest ecosystem restoration project is now underway in the Florida Everglades. I began working in the Everglades in 1989 and was fortunate to have the opportunity to work in several other regional wetlands (e.g., headwater marshes of the St. Johns River, Kissimmee River floodplain, Lake Okeechobee littoral marshes) that were undergoing early stages of restoration. The proximate goal of much of this collaborative research has been to gain a better understanding of the basic biology and ecology of aquatic semi-aquatic organisms such as fishes, amphibians, birds, and arthropods that inhabit the freshwater wetlands of southern Florida. However, the ultimate goal of this research has been to develop biological metrics that can be used to evaluate the efficacy of restoration efforts and to better inform decisions concerning management and conservation of freshwater wetscapes such as the Florida Everglades.


 

Overview and key findings

  • Patterns of habitat use in freshwater wetlands.
  • Mechanisms of habitat selection by freshwater nekton.
  • Role of scale in organizing wetland communities.
  • Use of created wetlands.
  • Effects of eutrophication.
  • How to sample little fishes in big wetlands.

 

Collaborators

  • Kim Babbitt, University of New Hampshire
  • Howard Jelks, US Geological Survey
  • Wiley Kitchens, US Geological Survey and University of Florida
  • Carole McIvor, US Geological Survey
  • Steve Miller, St. Johns River Water Management District
  • Joel Trexler, Florida International University

 

Sources of funding

  • South Florida Water Management District
  • St. Johns River Water Management District
  • Environmental Protection Agency

 

Publications


Pictures

 

   
Predators ate a diversity of prey. This image shows gut contents from a single bowfin. This figure shows how multivariate profile of diet of fishes from enhanced pool (B) is distinct from diet of fishes in unenhanced pools (A, C).