Florida Coastal Everglades Long Term Ecological Research
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PAST WORKING GROUPS

Soils and Sediments Working Group
(Phase I, 2000-2006)



Soil core Edward Castaneda retrieving a soils core to assess sedimentation and nutrient accumulation rates in a dwarf mangrove forest
In Phase I of the FCE-LTER project, scientists studied the accumulation of organic matter or nutrient-containing compounds derived from living things in the estuarine ecotones. Organic matter, which occurs in the form of dissolved organic matter or in clumps known as floc, is an important component of ecosystems, providing nutrients to plants and increasing their productivity, or the amount of living material. Numerous primary consumers, such as small fish and shrimp, rely on floc as a primary food source.

In the estuarine ecotones, organic matter can be produced locally as plant matter decays, or it can be delivered by upstream freshwater, groundwater, and ocean water. In Phase I, researchers wanted to find out whether the sources of organic matter differ between the Shark River Slough/Gulf of Mexico ecotone and the Taylor Slough/Florida Bay ecotone and whether patterns of organic matter delivery and accumulation would change once restoration projects that increase freshwater flow are implemented. They believed that an increase in freshwater flow would lead to an increase in organic matter accumulation, which would, in turn, lead to increased productivity.

In addition to examining the effects of freshwater flow on organic matter, FCE-LTER researchers studied the impacts of abiotic factors, such as sea level rise due to climate change and storm deposition, on organic matter dynamics.
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National Science Foundation logo This material is based upon work supported by the National Science Foundation through the Florida Coastal Everglades Long-Term Ecological Research program under Cooperative Agreements #DEB-1237517, #DBI-0620409, and #DEB-9910514. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
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