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synthesis of sediment production, transport, and accumulation >
1999 proposal
USGS Geologic Division
Project chief:
Robert B. Halley
Mail address: USGS 600 4th St. S., St. Petersburg, FL, 33701
Program(s): Integrated Natural Resource Science Program
Program element(s)/task(s) (show percent distribution if more
than one element/task). If submitting to more than one program, include
element(s)/tasks from each program here:
Element 1; Task 1.7 Aspects of Florida Bay, Florida Keys and the Coral
Reefs
BACKGROUND NARRATIVES
Project objectives and strategy: More detailed/technical than
the project summary, describing BRIEFLY the technical goals and approaches
to be used over the lifetime of the project.
South Florida Ecosystem Restoration projects by Halley, Stumpf, Prager,
Hansen, Holmes and Orem all deal with complementary aspects of sedimentation
in the Bay. These can be interrelated by use of a sediment budget because
95-99% of the sediment in the Bay is produced by organisms that live in
the environment. Individual project elements include the following processes:
1) modem rates of carbonate sediment production from radiocarbon measurements
and geochemical measurements (Halley), mineralogical and chemical composition
(Orem, Prager, Holmes) processes of erosion and deposition (Prager), resuspension
and transport (Prager, Stumpf), recent deposition (Holmes) and the geography
and geometry of net accumulation (Hansen, Halley). Carbonate productivity
in the Bay can be calculated using three methods. Stockman et. al (1967)
used accumulated sediments and dating to determine rates of sediment production.
Stockman et. al (1967) and Boscence (1989, 1995) used a standing crop and
turnover rate to determine short-term productivity. Large discrepancies
exist between the long-term and short-term productivity measures. Halley,
in complementary project, is using geochemical methods to determine short-term
productivity and carbonate precipitation. This geochemical validation and
proposed sediment budget will indicate whether there has been a long-term
change in the productivity of the Bay or if current processes can account
for the differences in apparent sediment production and accumulation.
Boscence, D. 1989a. Biogenic carbonate production in Florida Bay. Bull.
Mar. Sci. 44(1): 419-433
Stockman, K.W., R.N. Ginsburg, and E.A. Shinn. 1967, The production
of lime mud by algae in South Florida. J. Sediment Petrol. 37(2): 633-648.
Potential impacts and major products: The anticipated product
is a color circular describing sedimentation in the Bay and relating it
to the health and productivity of the Bay as well as to long-term changes
in the Bay, particularly as they relate to sea-level rise, increased freshwater
flows into the Bay and Bay circulation.
Collaborators;
Clients:
WORK PLAN
Time line (FY 1999 to project end): List MAJOR tasks and deliverables
by fiscal year and indicate key staff responsible for each.
FY 1999;
FY2000
Draft ready by the end of FY 1999
Publication through the review and publication process during FY 2000
Outreach activities: Describe plans to address client requirements,
decisions, and deadlines.
Client requirements will continue to be met through continued regular
client meetings, through direction from the Florida Bay Interagency Science
Program Management Council, and through continued interaction with collaborators
and clients listed above in the first section. Communication of results
takes place through the Florida Bay Interagency Science Program Management
Council to the Task Force.
Distribution plan will be developed in FY 2000
Proposersí previous experience in the projectís topic or geographic
area: Proposer has four yearís intensive study of sedimentation in
Florida Bay and 23 years of general knowledge about South Florida environments.
In addition he is a member of the interagengy Florida Bay Science Program
Management Council and has been for the last 4 years. As such he is responsible
for having knowledge of the management goals of the program and helps guide
his agencyís participation toward those goals.
PROJECT SUPPORT REQUIREMENTS
Halley (carbonate sedimentation, overall coordination, FY 1999, 2000)
Other required expertise for which no individual has been identified
(list by fiscal year for duration of project): none
Major equipment/facility needs (list by fiscal year for duration
of project): none
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U.S. Department of the Interior, U.S. Geological Survey, Center for Coastal Geology This page is: http://sofia.usgs.gov/proposals/1999/sedsynthp99.html Comments and suggestions? Contact: Heather Henkel - Webmaster Last updated: 11 October, 2002 @ 09:31 PM (KP) |