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|a Tree Islands in Everglades Landscapes: Current Status, Historical Changes, and Hydrologic Impacts on Population Dynamics and Moisture Relations, First Annual Report |h [electronic resource]. |
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|a Miami, Florida : |b Southeast Environmental Research Center, Florida International University, |c 2005-12-30. |
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|a Please contact the owning institution for licensing and permissions. It is the users responsibility to ensure use does not violate any third party rights. |
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|a In 2005 we initiated a project designed to better understand tree island structure and
function in the Everglades and the wetlands bordering it. Focus was on the raised
portions at the upstream end of the islands, where tropical hardwood species adapted to
well-drained conditions usually are the most prominent component of the vegetation. The
study design is hierarchical, with four levels; in general, a large number of sites is to be
surveyed once for a limited set of parameters, and increasingly small sets of islands are to
be sampled more intensively, more frequently, and for more aspects of ecosystem
function. During the first year of the 3-year study, we completed surveys of 41 Level 1
(i.e., the least intensive level) islands, and established permanent plots in two and three
islands of Levels 2 and 4 intensity, respectively. Tree species richness and structural
complexity was highest in Shark Slough “hammocks”, while islands in Northeast Shark
Slough and Water Conservation Area 3B, which receive heavy human use, were simpler,
more park-like communities. Initial monitoring of soil moisture in Level 4 hammocks
indicated considerable local variation, presumably associated with antecedent rainfall and
current water levels in the adjacent marsh. Tree islands throughout the study area were
impacted significantly by Hurricanes Katrina and Wilma in 2005, but appear to be
recovering rapidly. As the project continues to include more islands and repeated
measurements, we expect to develop a better grasp of tree island dynamics across the
Everglades ecosystem, especially with respect to moisture relations and water levels in
the adjacent marsh. The detailed progress report which follows is also available online at
http://www.fiu.edu/~serp1/projects/treeislands/tree_islands_2005_annual_report.pd |
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|a Electronic reproduction. |c Added automatically, |d 2014. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI14090771/00001 |y Click here for full text |
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|a http://dpanther.fiu.edu/sobek/content/FI/14/09/07/71/00001/Tree Islands in Evergladesthm.jpg |
