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Mandy Joye, Co-Investigator / Associate Professor

« Please Note: Mandy Joye is no longer active on the GCE-LTER Project so contact information may not be accurate (see the GCE Personnel page for an up-to-date list of participants) »

Mandy Joye

Research Emphasis:

Biogeochemistry, including sediment metabolism, sediment and system-level nutrient cycling, benthic microalgal production, groundwater geochemistry and associated nutrient and organic inputs.

Contact Information:

Primary Organization:  University of Georgia

Mailing Address:

Dr. Samantha B. Joye
Dept. of Marine Sciences
University of Georgia
Athens, Georgia 30602-3636

Office Phone:  (706) 542-5893

FAX Number:  (706) 542-5888

E-Mail:  mjoye@uga.edu

Web Page:  http://www.marsci.uga.edu/directory/samantha-b-joye

Other Identity Systems:

LTER:  12377


GCE Data Sets:

HYD-GCES-1401a (Groundwater well pressure, temperature, conductance, salinity and oxygen measurements for GCE-LTER study hammock HN_i_1 from 30-Oct-2008 to 03-Dec-2013)

HYD-GCES-1401b (Groundwater well pressure, temperature, conductance, salinity and oxygen measurements for GCE-LTER study hammock PC_i_29 from 15-Aug-2008 to 13-Dec-2013)

POR-GCES-1401 (High frequency sediment surface temperature measurements at GCE-LTER study hammock PC_i_29 from 15-Aug-2008 to 24-Sep-2012)

NUT-GCEM-0909b (Long-term water quality monitoring on the Altamaha River and major tributaries from September 2000 through April 2009)

NUT-GCEM-0909a (Long-term water quality monitoring in the Altamaha, Doboy and Sapelo sounds and the Duplin River near Sapelo Island, Georgia from May 2001 to August 2009)

(most recent displayed - view all)

GCE Publications and Presentations: (custom bibliography)

Journal Articles

Takagi, K., Hunter, K.S., Cai, W.-J. and Joye, S.B. 2017. Agents of change and temporal nutrient dynamics in the Altamaha River Watershed. Ecosphere. 8(1):33. (DOI: 10.1002/ecs2.1519)

Schutte, C., Joye, S.B., Wilson, A.M., Evans, T., Moore, W.S. and Casciotti, K. 2015. Intense nitrogen cycling in permeable intertidal sediment revealed by a nitrous oxide hotspot. Global Biogeochemical Cycles. 29(10):1584–1598. (DOI: 10.1002/2014GB005052)

Wilson, A.M., Evans, T., Moore, W.S., Schutte, C. and Joye, S.B. 2015. What time scales are important for monitoring tidally influenced submarine groundwater discharge? Insights from a salt marsh. Water Resources Research. 51(6). (DOI: 10.1002/2014WR015984)

Wilson, A.M., Evans, T., Moore, W.S., Schutte, C., Joye, S.B., Hughes, A.H. and Anderson, J. 2015. Groundwater controls ecological zonation of salt marsh macrophytes. Ecology. 96(3):840-849. (DOI: 10.1890/13-2183.1)

Baas, P., Hester, M. and Joye, S.B. 2014. Benthic primary production and nitrogen cycling in Spartina alterniflora marshes: effect of restoration after acute dieback. Biogeochemistry. 117(2-3):511-524. (DOI: 10.1007/s10533-013-9897-2)

Palomo, L., Meile, C. and Joye, S.B. 2013. Drought impacts on biogeochemistry and microbial processes in salt marsh sediments: a flow-through reactor approach. Biogeochemistry. 112(1-3):389-407. (DOI: 10.1007/s10533-012-9734-z)

Schutte, C., Hunter, K.S., McKay, P., Di Iorio, D., Joye, S.B. and Meile, C. 2013. Patterns and controls of nutrient concentrations in a southeastern United States tidal creek. Special Issue: Coastal Long Term Ecological Research. Oceanography. 26(3):12-139. (DOI: http://dx.doi.org/10.5670/oceanog.2013.55)

Segarra, K., Comerford, C., Slaughter, J.B. and Joye, S.B. 2013. Impact of electron acceptor availability on the anaerobic oxidation of methane in coastal freshwater and brackish wetland sediments. Geochimica et Cosmochimica Acta. 115:15 - 30. (DOI: 10.1016/j.gca.2013.03.029)

Segarra, K., Samarkin, V., King, E., Meile, C. and Joye, S.B. 2013. Seasonal variations of methane fluxes from an unvegetatedtidal freshwater mudflat (Hammersmith Creek, GA). Biogeochemistry. 115:349 - 361. (DOI: 10.1007/s10533-013-9840-6)

Porubsky, W.P., Joye, S.B., Moore, W.S., Tuncay, K. and Meile, C. 2011. Field measurements and modeling of groundwater flow and biogeochemistry at Moses Hammock, a backbarrier island on the Georgia coast. Biogeochemistry. 104:69-90. (DOI: 10.1007/s10533-010-9484-8)

Wilson, A.M., Moore, W.S., Joye, S.B., Anderson, J. and Schutte, C. 2011. Storm-driven groundwater flow in a salt marsh. Water Resources Research. 47(2):1-11. (DOI: 10.1029/2010WR009496)

Craft, C.B., Clough, J., Ehman, J., Joye, S.B., Park, R., Pennings, S.C., Guo, H. and Machmuller, M. 2009. Forecasting the effects of accelerated sea level rise on tidal marsh ecosystem services. Frontiers in Ecology and the Environment. 7(2):73-78. (DOI: 10.1890/070219)

Craft, C.B., Clough, J., Ehman, J., Joye, S.B., Park, R., Pennings, S.C., Guo, H. and Machmuller, M. 2009. SLR and ecosystem services: a response to Kirwan and Guntenspergen. Frontiers in Ecology and the Environment. 7:127-128.

Edmonds, J.W., Weston, N.B., Joye, S.B., Mou, X. and Moran, M.A. 2009. Microbial Community Response to Seawater Amendment in Low-Salinity Tidal Sediments. Microbial Ecology. 58(3):558-568. (DOI: 10.1007/s00248-009-9556-2)

Lasher, C., Dyszynski, G., Everett, K., Ye, W., Sheldon, W.M. Jr., Joye, S.B., Moran, M.A. and Whitman, W.B. 2009. The diverse bacterial community in intertidal, anaerobic sediments at Sapelo Island, Georgia. Microbial Ecology. 58(2):244-261. (DOI: 10.1007/s00248-008-9481-9)

Porubsky, W.P., Weston, N.B. and Joye, S.B. 2009. Benthic metabolism and the fate of dissolved inorganic nitrogen in intertidal sediments. Estuarine Coastal and Shelf Science. 83(4):392-402. (DOI: 10.1016/j.ecss.2009.04.012)

Weston, N.B., Hollibaugh, J.T. and Joye, S.B. 2009. Population growth away from the coastal zone: Thirty years of land use change and nutrient export from the Altamaha River, GA. Science of the Total Environment. 407:3347-3356. (DOI: 10.1016/j.scitotenv.2008.12.066)

Edmonds, J.W., Weston, N.B., Joye, S.B. and Moran, M.A. 2008. Variation in Prokaryotic Community Composition as a Function of Resource Availability in Tidal Creek Sediments. Applied and Environmental Microbiology. 74(6):1836-1844. (DOI: 10.1128/AEM.00854-07)

Porubsky, W.P., Velasquez, L.E. and Joye, S.B. 2008. Nutrient replete benthic microalgae as a source of labile dissolved organic carbon to coastal waters. Estuaries and Coasts. 31(5):860-876. (DOI: 10.1007/s12237-008-9077-0)

Moore, W.S., Blanton, J.O. and Joye, S.B. 2006. Estimates of flushing times, submarine groundwater discharge, and nutrient fluxes to Okatee Estuary, South Carolina. Journal of Geophysical Research. 111:C09006. (DOI: 10.1029/2005JC003041)

Weston, N.B., Dixon, R.E. and Joye, S.B. 2006. Microbial and geochemical ramifications of salinity intrusion into tidal freshwater sediments. Journal of Geophysical Research. 111:G01009. (DOI: 10.1029/2005JG000071)

Weston, N.B., Porubsky, W.P., Samarkin, V., MacAvoy, S., Erickson, M. and Joye, S.B. 2006. Pore water stoichiometry of terminal metabolic products, sulfate, and dissolved organic carbon and nitrogen in intertidal creek-bank sediments. Biogeochemistry. 77:375-408.

Magalhăes, C.M., Joye, S.B., Moreira, R.M., Wiebe, W.J. and Bordalo, A.A. 2005. Salinity and inorganic nitrogen effects on nitrification and denitrification rates in intertidal sediments and rocky biofilms: Douro River estuary, Portuga. Water Research. 39:1783-1794.

Magalhăes, C.M., Wiebe, W.J., Joye, S.B. and Bordalo, A.A. 2005. Inorganic Nitrogen Dynamics in Intertidal Rocky Biofilms and Sediments of the Douro River Estuary (Portugal). Estuaries, 28(4): 592-607.

Weston, N.B. and Joye, S.B. 2005. Temperature-driven decoupling of key phases of organic matter degradation in marine sediments. Proceedings of the National Academy of Sciences (USA). 102(47):17036-17040.

Moore, W.S., Krest, J., Taylor, G., Roggenstein, E., Joye, S.B. and Lee, R.Y. 2002. Thermal evidence of water exchange through a coastal aquifer: implications for nutrient fluxes. Geophysical Research Letters. 29(14):1704. (DOI: 10.1029/2002GL014923)

Books and Book Sections

Pennings, S.C., Alber, M., Alexander, C.R. Jr., Booth, M.G., Burd, A.B., Cai, W.-J., Craft, C.B., DePratter, C., Di Iorio, D., Hollibaugh, J.T., Hopkinson, C.S., Joye, S.B., Meile, C., Moore, W.S., Silliman, B.R., Thompson, V.D. and Wares, J.P. 2012. South Atlantic Tidal Wetlands. Pages 45-61 in: Batzer, D.P. and Baldwin, A. (editors). Wetland Habitats of North America: Ecology and Conservation Concerns. University of California Press, Berkeley, California.

Joye, S.B., Cook, P. and de Beer, D. 2009. Biogeochemical dynamics of coastal tidal flats. Pages 345-374 in: Perillo, G., Cahoon, D. and Brinson, M. (editors). Coastal Wetlands: An Integrated Ecosystem Approach. Elsevier, Amsterdam, The Netherlands.

Joye, S.B. and Anderson, I. 2008. Nitrogen Cycling in Estuarine and Nearshore Sediments. Pages 867-915 in: Capone, D.G., Bronk, D.A., Mulholland, M.A. and Carpenter, E.J. (editors). Nitrogen in the Marine Environment, Second Edition. Elsevier Inc. (DOI: 10.1016/B978-0-12-372522-6.00019-0)

Joye, S.B., Bronk, D.A., Koopmans, D. and Moore, W.S. 2006. Potential for groundwater-derived carbon, nitrogen and phosphorus inputs to coastal ecosystems in South Carolina and Georgia. Pages 139-167 in: Kleppel, G.S., DeVoe, M.R. and Rawson, M.V. (editors). Implications of Land Use Change to Coastal Ecosystems. Springer-Verlag, New York.

Joye, S.B., Porubsky, W.P., Weston, N.B. and Lee, R.Y. 2003. Benthic microalgal production and nutrient dynamics in intertidal sediments. Pages 67-70 In: Rullkötter, J. (editor), BioGeoChemistry of Tidal Flats. Forschungszentrum Terramare Berichte Nr. 12, Proceedings of a Workshop held at the Hanse Institute of Advanced Study, Delmenhorst, Germany.

Joye, S.B. 2002. Denitrification in the Marine Environment. Collins, G. (editor). Encyclopedia of Environmental Microbiology. John Wiley & Sons, Inc., New York.

Conference Papers (Peer Reviewed)

Weston, N.B., Hollibaugh, J.T., Sandow, J. and Joye, S.B. 2003. Nutrients and dissolved organic matter in the Altamaha river and loading to the coastal zone. Hatcher, K.J. (editor). Proceedings of the 2003 Georgia Water Reseurces Conference. Institute of Ecology, University of Georgia, Athens, Georgia.

Conference Posters and Presentations

Schutte, C., Meile, C., Di Iorio, D., McKay, P., Hunter, K.S., Blanton, J.O. and Joye, S.B. 2012. Poster: Physical and biogeochemical patterns in a saltmarsh/river system (Duplin River, GA). 2012 LTER ASM.

Schutte, C., Meile, C., Di Iorio, D., McKay, P., Joye, S.B., Blanton, J.O. and Schalles, J.F. 2011. Poster: Physical and biogeochemical patterns in the Duplin saltmarsh river system: preliminary results. LTER Science Council Meeting, Jekyll Island, GA.

Comerford, C., Joye, S.B. and Weston, N.B. 2009. Presentation: Biogeochemical ramifications of salinity intrusion into freshwater wetlands. LTER Review Meeting 2009.

Hester, M.W., Mendelssohn, I.A., Alber, M. and Joye, S.B. 2009. Presentation: Effects of sudden salt marsh dieback and Spartina alterniflora stem density on ecosystem services in tidal salt marshes of Georgia and Louisiana, USA. Coastal and Estuarine Research Federation meeting, November 2009, Portland, Oregon.

Joye, S.B., Hyacinthe, C., Samarkin, V., Baas, P. and Hester, M.W. 2009. Presentation: Biogeochemical signatures and microbial activity in sediments recovering from salt marsh dieback. Coastal and Estuarine Research Federation Conference, November 2009, Portland, Oregon.

Palomo, L., Hyacinthe, C. and Joye, S.B. 2009. Presentation: Drought impacts on biogeochemistry and microbial processes in salt marsh sediments. Coastal and Estuarine Research Federation Conference, November 2009, Portland, Oregon.

Schutte, C., Moore, W.S., Wilson, A.M. and Joye, S.B. 2009. Poster: Mechanisms for variability in groundwater nutrient flux to estuaries and the coastal ocean. LTER All Scientists Meeting, September 13-17, 2009, Estes Park, Colorado.

Wilson, A.M., Anderson, J., Moore, W.S., Schutte, C. and Joye, S.B. 2009. Presentation: Storm-driven groundwater flow and nutrient transport in a barrier island. American Geophysical Union, Fall Meeting, December 2009, San Francisco, California.

Alber, M., Schaefer, S.C., Pomeroy, L.R., Sheldon, J.E. and Joye, S.B. 2008. Presentation: Nitrogen inputs to the Altamaha River estuary (Georgia, USA): a historic analysis. American Society of Limnology and Oceanography, 3/08, Orlando, FL.

Segarra, K., Samarkin, V. and Joye, S.B. 2008. Presentation: Competition between methanogens and iron reducing bacteria in freshwater sediments. Gordon Research Conference on Microbial Metabolism of C1 Compounds, Lewiston Maine.

Edmonds, J. W., Weston, N. B., Mou, X., Joye, S. B., and Moran, M.A. 2007. Presentation: Rising sea levels and salinity intrusion into tidal freshwater marshes: Shifting microbial communities and pathways of organic matter mineralization. ASLO Aquatic Sciences Meeting, Santa Fe NM, February 2007.

Hester, M.W., Mendelssohn, I.A., Alber, M. and Joye, S.B. 2007. Presentation: Climate-Linked Alteration of Ecosystem Services in Tidal Salt Marshes of Georgia and Louisiana: Preliminary Findings. Estuarine Research Federations 2007 Annual Meeting, 4-8 November 2007, Providence, Rhode Island.

Joye, S.B., Hunter, K.S., Bernier, M., Craft, C. 2007. Presentation: Salinity-driven patterns in sediment biogeochemistry and microbial activity in Georgia coastal estuaries. 10th International Symposium on the Biogeochemistry of Wetlands, 1-4 April 2007, Annapolis, Maryland.

Porubsky, W.P., Meile, C. and Joye, S.B. 2007. Poster: Variations in groundwater biogeochemistry and flow on Moses Hammock (Sapelo Island, GA): Field measurements, laboratory assays, and modeling. American Society of Limnology and Oceanography 2007 Aquatic Sciences Meeting, 4-9 February 2007, Santa Fe, New Mexico.

Porubsky, W.P., Meile, C. and Joye, S.B. 2007. Presentation: Using field measurements, laboratory assays and modeling to examine flow conditions and variations in groundwater biogeochemistry. Estuarine Research Federation 2007 Annual Meeting, 4-8 November 2007, Providence, Rhode Island.

Segarra, K., Samarkin, V. and Joye, S.B. 2007. Presentation: Temperature driven variations in terminal metabolism in methanogenic freshwater sedments. Estuarine Research Federation 2007 Annual Meeting, 4-8 November 2007, Providence, Rhode Island.

Weston, N.B., Vile, M.A., Velinksy, D.J., Joye, S.B. and Neubauer, S.C. 2007. Presentation: Rising sea levels and salinity intrusion into tidal freshwater marshes: Shifting microbial communities and pathways of organic matter mineralization. ASLO Aquatic Sciences Meeting, Santa Fe NM, February 2007.

Weston, N.B., Vile, M.A., Velinksy, D.J., Joye, S.B. and Neubauer, S.C. 2007. Presentation: Shifting pathways and magnitude of organic matter mineralization in tidal freshwater marshes following sea-level rise. Estuarine Research Federation 2007 Annual Meeting, 4-8 November 2007, Providence, Rhode Island.

Porubsky, W.P., Meile, C. and Joye, S.B. 2006. Poster: Nutrient dynamics in the hammock subsurface: The impact of flow and reactions on coastal groundwater biogeochemistry. Academy of the Environment Meeting, October 2006, Athens, Georgia.

Edmonds, J.W., Weston, N.B., Joye, S.B. and Moran, M.A. 2004. Presentation: Changes in Microbial Community Structure and Activity in Response to Fluctuations in Organic Carbon Pools in Salt Marsh Sediments. Annual Meeting of the American Society of Microbiology. American Society of Microbiology, June, 2004, Atlanta, Georgia.

Joye, S.B., Lee, R.Y., Porubsky, W.P. and Weston, N.B. 2004. Presentation: Environmental Controls On Denitrification In Temperate And Tropical Shallow Sediments. ASLO Aquatic Sciences Meeting. American Society of Limnology and Oceanography, 2004, Salt Lake City, Utah.

Weston, N.B. and Joye, S.B. 2004. Presentation: Seasonal patterns of coupling between hydrolytic/fermentative and terminal metabolic microbial communities in an estuarine sediment. ASLO Aquatic Sciences Meeting. American Society of Limnology and Oceanography, 2004, Salt Lake City, Utah.

Joye, S.B. 2003. Presentation: Benthic primary production and nutrient dynamics in intertidal sediments. Workshop on Tidal Flat Biogeochemistry, Hanse Institute of Advanced Study. May 2003, Delmenhorst, Germany.

Joye, S.B., Weston, N.B., Porubsky, W.P. and Moore, W.S. 2003. Presentation: Groundwater as source of nutrients and organic matter to freshwater and marine ecosystems. ASLO Aquatic Sciences Meeting. February, 2003, Salt Lake City, UT.

Porubsky, W.P., Weston, N.B. and Joye, S.B. 2003. Poster: Examination of denitrification and dissimilatory nitrate reduction to ammonium as pathways for the reduction of inorganic nitrogen in saltmarsh sediment. 17th Biennial Conference of the Estuarine Research Federation. September 2003, Seattle, WA.

Porubsky, W.P., Weston, N.B., Lee, R. and Joye, S.B. 2003. Poster: Diel and seasonal patterns of benthic fluxes of nutrients, gases, and dissolved organics from temperate intertidal sediments of Georgia and South Carolina. Long Term Ecological Research All Scientists Meeting. September 2003, Seattle, WA.

Porubsky, W.P., Weston, N.B., Lee, R.Y. and Joye, S.B. 2003. Poster: Diel and seasonal patterns of benthic fluxes of nutrients, gases, and dissolved organics from temperate intertidal sediments of Georgia and South Carolina. SECOS Meeting. January 2003, Charleston, SC.

Weston, N.B., Porubsky, W.P. and Joye, S.B. 2003. Presentation: Shallow marsh groundwater biogeochemistry and organic matter lability. ASLO Aquatic Sciences meeting. February 2003, Salt Lake City, UT.

Weston, N.B., Porubsky, W.P., Joye, S.B., Samarkin, V. and Erickson, M. 2003. Poster: Porewater Stoichiometry of Terminal Metabolic Products, Sulfate, and Dissolved Organic Carbon and Nitrogen in Estuarine Sediments. Long Term Ecological Research Program All Scientists Meeting. September 2003, Seattle, WA.

Porubsky, W.P., Weston, N.B. and Joye, S.B. 2002. Presentation: Redox control of benthic fluxes of nutrients and dissolved organics from coastal sediments. ASLO Summer Meeting. American Society of Limnology and Oceanography, June, 2002, Victoria, British Columbia.

Weston, N.B., Porubsky, W.P. and Joye, S.B. 2002. Presentation: Seasonal patterns of porewater nutrients, dissolved organics, redox species and gases in estuarine sediments. ASLO Summer Meeting. American Society of Limnology and Oceanography, June, 2002, Victoria, British Columbia.

Joye, S.B., Weston, N.B. and MacAvoy, S.E. 2001. Presentation: Groundwater inputs and sediment biogeochemical processes in Georgia and South Carolina coastal ecosystems. Biannual Meeting of the Estuarine Research Federation. Estuarine Research Federation, November, 2001, St. Petersburg, Florida.

Lee, R.Y., Wooller, M.J., Fogel, M.L. and Joye, S.B. 2001. Presentation: Ecosystem controls on nitrogen, carbon, and oxygen cycling in temperate and tropical intertidal sediments. American Society of Limnology and Oceanography. American Society of Limnology and Oceanography, November, 2001.

LTER
NSF

This material is based upon work supported by the National Science Foundation under grants OCE-9982133, OCE-0620959 and OCE-1237140. 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.