Climatic Change

, Volume 107, Issue 1–2, pp 81–108 | Cite as

Sea level rise and South Florida coastal forests

  • Amartya K. Saha
  • Sonali Saha
  • Jimi Sadle
  • Jiang Jiang
  • Michael S. Ross
  • René M. Price
  • Leonel S. L. O. Sternberg
  • Kristie S. Wendelberger
Article

Abstract

Coastal ecosystems lie at the forefront of sea level rise. We posit that before the onset of actual inundation, sea level rise will influence the species composition of coastal hardwood hammocks and buttonwood (Conocarpus erectus L.) forests of the Everglades National Park based on tolerance to drought and salinity. Precipitation is the major water source in coastal hammocks and is stored in the soil vadose zone, but vadose water will diminish with the rising water table as a consequence of sea level rise, thereby subjecting plants to salt water stress. A model is used to demonstrate that the constraining effect of salinity on transpiration limits the distribution of freshwater-dependent communities. Field data collected in hardwood hammocks and coastal buttonwood forests over 11 years show that halophytes have replaced glycophytes. We establish that sea level rise threatens 21 rare coastal species in Everglades National Park and estimate the relative risk to each species using basic life history and population traits. We review salinity conditions in the estuarine region over 1999–2009 and associate wide variability in the extent of the annual seawater intrusion to variation in freshwater inflows and precipitation. We also examine species composition in coastal and inland hammocks in connection with distance from the coast, depth to water table, and groundwater salinity. Though this study focuses on coastal forests and rare species of South Florida, it has implications for coastal forests threatened by saltwater intrusion across the globe.

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Amartya K. Saha
    • 1
  • Sonali Saha
    • 2
  • Jimi Sadle
    • 3
  • Jiang Jiang
    • 4
  • Michael S. Ross
    • 5
  • René M. Price
    • 5
  • Leonel S. L. O. Sternberg
    • 4
  • Kristie S. Wendelberger
    • 6
  1. 1.Southeast Environmental Research CenterFlorida International UniversityMiamiUSA
  2. 2.The Institute for Regional ConservationMiamiUSA
  3. 3.Everglades National ParkHomesteadUSA
  4. 4.Dept. of BiologyUniversity of MiamiCoral GablesUSA
  5. 5.Southeast Environmental Research Center and Dept. of Earth and EnvironmentFlorida International UniversityMiamiUSA
  6. 6.Curriculum for the Environment and EcologyUniversity of North Carolina, Chapel HillChapel HillUSA

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