Previous Research Projects
   
MICROBIAL
MATS IN MANGROVE
BIOCOMPLEXITY
TWIN CAYS, BELIZE
Smithsonian
Institution Environmental
Research Center:
Dr.
Ilka C. Feller, Animal-Plant Interaction Lab
University of Georgia Department
of Marine Sciences:
Dr. Samantha
B. Joye, Biogeochemistry/Molecular
Microbial Ecology Group
Smithsonian Institute Field Site, Carrie Bow Cay, Belize. 2000-2004.
Examined mangrove microbial mat nutrient availability and rates of oxygenic
and anoxygenic photosynthesis and carbon fixation, nitrogen fixation
and denitrification. [More...]
   
MANGROVE
LEAF LEACHING OF CDOM
FLORIDA KEYS, FLORIDA, USA
Environmental
Protection Agency, Ecosystems
Research Division: Dr.
Richard G. Zepp
National
Network for Environmental Management Studies (NNEMS) Fellowship Program
Mote
Marine Laboratory, Summerland Key, FL. 2003-2004.
Examined the production and rate of mangrove leaf leaching and
the impacts of UV and CDOM on coral reef heath. [More...]
   
NUTRIENT
CHEMISTRY OF A SALINE LAKE
MONO LAKE, CALIFORNIA, USA
University
of California, Santa Barbara, Marine
Science Institute: Dr. Robert Jellison
University of Georgia
Department of Marine Sciences:
Dr. Samantha
B. Joye,
Biogeochemistry/Molecular Microbial Ecology Group
Sierra
Nevada Aquatic Research Laboratories, Mammoth Lakes, CA. 2000-2001.
Examined nutrient concentrations and rates of methane cycling
in the water column of a saline lake.
   
BENTHIC
MICROALGAL MAT BIOGEOCHEMISTRY IN SALT MARSHES
LITTLE SATILLA RIVER AND SAPELO ISLAND, GEORGIA, USA
University
of Georgia Department
of Marine Sciences:
Dr. Samantha
B. Joye,
Biogeochemistry/Molecular Microbial Ecology Group
University
of Georgia Marine Institute, Sapelo Island, GA. January, April,
June, July 2001.
Examined nutrient availability and rates of oxygenic and anoxygenic
photosynthesis and carbon fixation, nitrogen fixation and denitrification
in salt marsh microalgal mats at LTER-GCE sites. [More...]
GEORGIA COASTAL ECOSYSTEMS LTER
LITTLE
SATILLA RIVER AND SAPELO ISLAND, GEORGIA, USA
University
of Georgia Department
of Marine Sciences:
Dr. Samantha
B. Joye,
Biogeochemistry/Molecular Microbial Ecology Group
Athens,
GA. June 2000.
Examined nutrient concentrations in groundwater and porewater
and evaluated rates of potential denitrification in marsh sediments
for preliminary SeaGrant proposal data. [More...]
   
NITROGEN
BIOGEOCHEMISTRY
IN THE SCHELDT ESTUARY
BELGIUM AND THE NETHERLANDS
Utrecht
University Department
of Geochemistry: Dr.
Phillippe Van Cappellen
University of Georgia
Department of Marine Sciences:
Dr. Samantha
B. Joye,
Biogeochemistry/Molecular Microbial Ecology Group
Netherlands
Institute of Ecology (NIOO-KNAW), The Netherlands. April 2000.
Measured
nutrient flux and nitrogen cycling rates in sediments from Appels (fresh)
and Waarde (saltwater) banks and marshes, i.e. potential rates of denitrification
and nitrogen fixation and fluxes of nutrients and nitrogen gas.
   
SALT-WATER
INTRUSION AND COASTAL SEDIMENT NUTRIENT FLUXES GEORGIA AND SOUTH CAROLINA,
USA
University
of Georgia Department
of Marine Sciences:
Dr. Samantha
B. Joye,
Biogeochemistry/Molecular Microbial Ecology Group
University
of Georgia, Athens, GA. Fall 1999 - Winter 2000.
Examined the effects of salinity changes on coastal sediment
nutrient adsorption and desorption in sediments from the Satilla River,
Lake Herrick, Horse Pond, Savannah, and Woodbine, GA and North Inlet,
SC. [More...]
NUTRIENT
FLUXES DUE TO BIOTURBATION
SAPELO ISLAND, GEORGIA, USA
University
of Georgia Department
of Marine Sciences: Dr.
Ming-Yi Sun,
Dr. Samantha
B. Joye,
Biogeochemistry/Molecular Microbial Ecology Group
University
of Georgia, Athens, GA. Fall 1999.
Examined nutrient profiles and fluxes from Sapelo Island, GA,
cores exposed to various regimes of physical mixing and bioturbation
from shrimps, crabs or worms.
NUTRIENT
CHEMISTRY IN SUBTERRANEAN COASTAL AQUIFERS
LONG BAY, SOUTH CAROLINA, USA
University
of South Carolina Department
of Geological Sciences:
Dr. Willard S. Moore
University of Georgia
Department of Marine Sciences:
Dr. Samantha
B. Joye,
Biogeochemistry/Molecular Microbial Ecology Group
University
of South Carolina, Columbia, SC. Fall 1999.
Examined nutrient chemistry of South Carolina coastal aquifers.
[More...]
GROUNDWATER
NUTRIENT CHEMISTRY
SAPELO ISLAND, GEORGIA, USA
University
of Georgia Department
of Marine Sciences:
Dr. Samantha
B. Joye,
Biogeochemistry/Molecular Microbial Ecology Group
Georgia Institute of Technology
School of Earth & Atmospheric
Sciences:
Dr. Carolyn
Ruppel, Geophysics
University
of Georgia Marine Institute, Sapelo Island, GA. Athens,
GA. August 1999.
Examined
nutrient chemistry of groundwater on Sapelo Island, GA. [More...]
INFLUENCE
OF LAND-USE ON GROUNDWATER NUTRIENTS
SAPELO ISLAND, GEORGIA, USA
Georgia
Sea Grant College Program
University
of Georgia Department
of Marine Sciences:
Dr.
Samantha B. Joye,
Biogeochemistry/Molecular Microbial Ecology Group
University
of Georgia, Athens, GA. Summer 1999.
Coastal Management Internship. Examined the influence of land-use
on groundwater-derived nutrients and organic inputs to the South Atlantic
Bight. Sapelo Island and Satilla River groundwater nutrients were analyzed
and marsh sediments were assayed for potential denitrification rates.
   
SALT
MARSH DENITRIFICATION
SIPPEWISSETT AND WAQUOIT BAY MARSHES, MASSACHUSETTS, USA
University
of Georgia Department
of Marine Sciences:
Dr. Samantha
B. Joye,
Biogeochemistry/Molecular Microbial Ecology Group
Marine Biological Laboratory
Boston University Marine Program:
Dr.
Ivan Valiela, Valiela Lab
Marine Biological Laboratory, Woods
Hole, MA. Summer
1999.
Compared potential denitrification rates and groundwater nutrient
concentrations in Sippewissett fertilisation plots to Waquoit Bay subestuaries.
  
POTENTIAL
RATES OF DENITRIFICATION ACROSS GALVESTON BAY
GALVESTON
BAY, TEXAS, USA
University
of Georgia Department
of Marine Sciences:
Dr. Samantha
B. Joye,
Biogeochemistry/Molecular Microbial Ecology Group
Texas A&M University at Galveston,
Galveston, TX. Fall 1998 - Spring 1999.
Examined
potential rates of denitrification under varying concentrations of nitrate,
sulfide and glucose.
[More...]
DENITRIFICATION
IN COASTAL GROUNDWATER
University
of Virginia Department of
Environmental Sciences:
Dr. Aaron L. Mills, Laboratory
of Microbial Ecology
University
of Virginia, Charlottesville, VA. Spring 1998.
Independent Study. Studied denitrification in coastal groundwater.
   
DENITRIFICATION
(N2 AND N2O) AND NUTRIENT LOADING
WAQUOIT BAY, MASSACHUSETTS, USA
Marine
Biological Laboratory Boston
University Marine Program:
Dr.
Ivan Valiela, Valiela Lab
University of Georgia
Department of Marine Sciences:
Dr.
Samantha B. Joye, Joye
Biogeochemistry/Molecular Microbial Ecology Group
Marine
Biological Laboratory, Woods Hole, MA. Summer 1997.
Research
Experiences for Undergraduates Internship. Compared the production of
nitrous oxide (N2O) and dinitrogen (N2) gases
using the acetylene inhibition technique in salt marsh sediments fringing
three Waquoit Bay (MA, USA) estuaries receiving different loads of land-derived
nitrogen. [More...]
TREE
GROWTH AND PRECIPITATION
CHARLOTTESVILLE, VIRGINIA, USA
University
of Virginia Department of
Environmental Sciences: Dr.
Thomas M. Smith
University
of Virginia, Charlottesville, VA. Summer 1996-Spring 1997.
Independent
Study. Correlated annual forest tree growth with local precipitation.
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