Ecological Indicators for Assessing and Communicating Seagrass Status and Trends in Florida Bay§ Christopher J
Ecological Indicators 9S (2009) S68–S82 Contents lists available at ScienceDirect Ecological Indicators journal homepage: www.elsevier.com/locate/ecolind Ecological indicators for assessing and communicating seagrass status and trends in Florida Bay§ Christopher J. Madden a,*, David T. Rudnick a, Amanda A. McDonald a, Kevin M. Cunniff b, James W. Fourqurean c a Everglades Division, South Florida Water Management District, 8894 Belvedere Rd., West Palm Beach, FL 33411, USA b R.C.T. Engineering, Inc., 701 Northpoint Parkway, West Palm Beach, FL 33407, USA c Dept. of Biological Sciences and Southeast Environmental Research Center, Florida International University, Miami, FL 33199, USA ARTICLE INFO ABSTRACT Article history: A suite of seagrass indicator metrics is developed to evaluate four essential measures of seagrass Received 23 April 2008 community status for Florida Bay. The measures are based on several years of monitoring data using the Received in revised form 20 January 2009 Braun-Blanquet Cover Abundance (BBCA) scale to derive information about seagrass spatial extent, Accepted 11 February 2009 abundance, species diversity and presence of target species. As ecosystem restoration proceeds in south Florida, additional freshwater will be discharged to Florida Bay as a means to restore the bay’s hydrology Keywords: and salinity regime. Primary hypotheses about restoring ecological function of the keystone seagrass Florida Bay community are based on the premise that hydrologic restoration will increase environmental variability Seagrass and reduce hypersalinity. This will create greater niche space and permit multiple seagrass species to co- Status Indicators exist while maintaining good environmental conditions for Thalassia testudinum, the dominant climax Thalassia seagrass species.
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