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South Florida Water, Sustainability, and Climate Project
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FCE Data Set ID Number: SFWSC_006
Originator(s): Ross Boucek, Jennifer Rehage,
(rbouc003@fiu.edu, rehagej@fiu.edu, )
Title: Trophic transfer of Everglades marsh consumer biomass to Everglades Estuaries (FCE), Everglades National Park, South Florida from December 2010 to Present
Data Set metadata: View metadata as:  HTML (recommended)    Text    XML
Public file download: None Available until November 2016
Data notes: Ph.D. Dissertation Research Data
Private SFWSC file download: None Available until November 2016
Time Period of Content: 17-Dec-2010 to 01-Jul-2013
Abstract: We measured the trophic transfer of secondary consumer biomass from the Everglades marshes to the oligohaline reaches of the Shark River by sampling the diets of four common large bodied piscivorous fishes occurring at the marsh-estuary oligohaline ecotone. The four species sampled were Florida bass (Micropterus floridanus), bowfin (Amia calva), common snook (Centropomus undecimalis), and red drum (Sciaenops ocellatus). We sampled diets via pulsed gastric lavage, a relatively non-lethal and effective sampling technique used to measure trophic interactions. We quantified trophic transfer of marsh biomass to the estuary when a focal piscivore consumed a prey species that was likely a migrant from adjacent marshes. A more detailed description of these methods can be found in citation #28. In the presented data, we combined estimates of relative abundance of piscivores from standardized electrofishing techniques (# of piscivores/ 100 meters of sampled shoreline) with biomass of marsh species consumed in the estuary to calculate the biomass (g) transferred to the estuary per 100 meters of shoreline. These values serve as our index of how much biomass is being exported off of the marsh to the estuary through consumer mediated habitat linkages. An important key finding from this work is that disturbance, in particular drought, can sever this biomass linkage, and conserve biomass export off of karstic wetlands to estuaries through of marsh secondary consumer trophic pathways.
Locations: Shark River Estuary, Everglades National Park, FL US
Column description:
Date YYYY-MM-DD DateTime
Latitude_DD Decimal Degrees Decimal
Longitude_DD Decimal Degrees Decimal
Number of records: 4 Columns by 286 Rows, including Column Header
Public release date: 18-Nov-2016

  This material is based upon work supported by the National Science Foundation under Grant No. EAR-1204762 and the United States Department of Agriculture NIFA Award Number 2012-67003-19862.
  Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.