, Volume 34, Supplement 1, pp 113–122 | Cite as

Benthic Exchange of C, N, and P Along the Estuarine Ecotone of Lower Taylor Slough, Florida (USA): Effect of Seasonal Flows and Phosphorus Availability

  • Kung Jen Liu
  • Hsiu Ping Li
  • Stephen E. DavisIII
Hydrologic Restoration


The southern Everglades and Florida Bay have experienced a nearly 50 % reduction in freshwater flow resulting in increased salinity and landward expansion of mangrove forest. Given the marine end-member is a natural source of P to this region, it is necessary to understand the interactions between inflows and P availability in controlling the exchange of materials across the mangrove ecotone. From 2007 to 2008, we used sediment core incubations to quantify fluxes of dissolved inorganic N and P and dissolved organic carbon (DOC) in three ecotone areas (dwarf mangrove, pond, and bay). Experiments were repeated seasonally over 2 years involving P-enriched surface water as a factor. We saw consistent uptake of soluble reactive P (SRP), DOC, and nitrate + nitrite (N+N) by the soils/sediments and release of ammonium (NH4 +) from soils/sediments to the water column across all sites and seasons. P enrichment had no discernible effect on DIN or DOC flux, suggesting that rapid P uptake may have been more geochemically mediated. However, uptake of added P occurred across all sites and seasons, reflecting high uptake capacity in this carbonate system and the potential of the mangrove ecotone to sequester P as it becomes more available.


Everglades Nutrient flux Peat soil Sediment Phosphorus Nitrogen Carbon Mangrove Seagrass Nutrient addition 



We would like to acknowledge a NOAA CSCOR grant (NA06NOS4780098) to Texas A&M University that provided much of the funding for this research. Support for this work was provided by Everglades National Park, the Southeast Environmental Research Center, the Florida Coastal Everglades Long-Term Ecological Research program (National Science Foundation cooperative agreements #DEB-1237517 and DBI-0620409), the Everglades Foundation and the South Florida Water Management District. We thank Drs. V. Rivera-Monroy and E. Castañeda-Moya for their valuable insights throughout this project, two anonymous reviewers for their helpful comments and recommendations, and G. Losada for field support. This is contribution number 609 from the Southeast Environmental Research Center at Florida International University.


  1. Agawin NS, Duarte CM, Fortes MD (1996) Nutrient limitation of Philippine seagrasses (Cape Bolinao, NW Philippines): in situ experimental evidence. Marine Ecology Progress Series 138:233–243CrossRefGoogle Scholar
  2. Alongi DM (1996) The dynamics of benthic nutrient pools and fluxes in tropical mangrove forests. Journal of Marine Research 54:123–148CrossRefGoogle Scholar
  3. APHA (1998) Standard Methods for the Examination of Water and Wastewater, 20th Ed. American Public Health AssociationGoogle Scholar
  4. Boto KG, Wellington JT (1988) Seasonal variations in concentrations and fluxes of dissolved organic and inorganic materials in a tropical, tidally-dominated, mangrove waterway. Marine Ecology Progress Series 50:151–160CrossRefGoogle Scholar
  5. Briceño HO, Boyer JN (2010) Climatic controls on phytoplankton biomass in a sub-tropical estuary, Florida Bay, USA. Estuaries and Coasts 33:541–553CrossRefGoogle Scholar
  6. Castañeda-Moya E, Twilley R, Rivera-Monroy VH, Zhang K, Davis SE, Ross M (2010) Spatial patterns of sediment deposition in mangrove forests of the Florida coastal Everglades after the passage of Hurricane Wilma. Estuaries and Coasts 33:45–58CrossRefGoogle Scholar
  7. Childers DL, Boyer JN, Davis SE, Madden CJ, Rudnick DT, Sklar FH (2006) Relating precipitation and water management to nutrient concentrations in the oligotrophic “upside-down” estuaries of the Florida Everglades. Limnology and Oceanography 51:602–616CrossRefGoogle Scholar
  8. Craft CB, Richardson CJ (1997) Relationships between soil nutrients and plant species composition in Everglades peatlands. Journal Of Environmental Quality 26:224–232CrossRefGoogle Scholar
  9. Davis SE, Childers DL, Day JW, Rudnick DT, Sklar FH (2001a) Wetland-water column exchanges of carbon, nitrogen, and phosphorus in a southern Everglades dwarf mangrove. Estuaries 24:610–622CrossRefGoogle Scholar
  10. Davis SE, Childers DL, Day JW, Rudnick DT, Sklar FH (2001b) Nutrient dynamics in vegetated and unvegetated areas of a southern Everglades mangrove creek. Estuarine, Coastal and Shelf Science 52:753–768CrossRefGoogle Scholar
  11. Davis SE, Childers DL, Day JW, Rudnick DT, Sklar FH (2003) Factors affecting the concentration and flux of materials in two southern Everglades mangrove wetlands. Marine Ecology Progress Series 253:85–96CrossRefGoogle Scholar
  12. Davis SE, Childers DL, Noe GB (2006) The contribution of leaching to the rapid release of nutrients and carbon in the early decay of wetland vegetation. Hydrobiologia 569:87–97CrossRefGoogle Scholar
  13. Feller IC (1995) Effects of nutrient enrichment on growth and herbivory of dwarf red mangrove (Rhizophora mangle). Ecological Monographs 65:477–505CrossRefGoogle Scholar
  14. Feller IC, McKee K, Whigham D, O’Neill J (2003) Nitrogen vs phosphorus limitation across an ecotonal gradient in a mangrove forest. Biogeochemistry 62:145–175CrossRefGoogle Scholar
  15. Ferdie M, Fourqurean JW (2004) Responses of seagrass communities to fertilization along a gradient of relative availability of nitrogen and phosphorus in a carbonate environment. Limnology and Oceanography 49:2082–2094CrossRefGoogle Scholar
  16. Gardner WS, McCarthy MJ (2009) Nitrogen dynamics at the sediment–water interface in shallow, sub-tropical Florida Bay: Why denitrification efficiency may decrease with increased eutrophication. Biogeochemistry 95:185–198CrossRefGoogle Scholar
  17. Gardner WS, Seitzinger SP, Malczyk JM (1991) The effects of sea salts on the forms of nitrogen released from estuarine and freshwater sediments: Does ion pairing affect ammonium flux? Estuaries 14:157–166CrossRefGoogle Scholar
  18. Hittle C, Patino E, Zucker M (2001) Freshwater flow from estuarine creeks into northeastern Florida Bay. USGS Water-Resources Investigations Report 01–4164Google Scholar
  19. Kelble CR, Johns EM, Nuttle WK, Lee TN, Smith RH, Ortner PB (2007) Salinity patterns of Florida Bay. Estuarine, Coastal and Shelf Science 71:318–334CrossRefGoogle Scholar
  20. Koch MS, Snedaker SC (1997) Factors influencing Rhizophora mangle L. seedling development in Everglades carbonate soils. Aquatic Botany 59:87–98CrossRefGoogle Scholar
  21. Koch GR, Childers DL, Staehr PA, Price R, Davis SE, Gaiser E (2012) Hydrological conditions control P loading and aquatic metabolism of an oligotrophic, subtropical estuary. Estuaries and Coasts 35(1):292–307CrossRefGoogle Scholar
  22. Lee SY (1995) Mangrove outwelling: a review. Hydrobiologia 295:203–212CrossRefGoogle Scholar
  23. Marshall FE, Wingard GL, Pitts P (2009) A simulation of historic hydrology and salinity in Everglades National Park: coupling paleoecologic assemblage data with regression models. Estuaries and Coasts 32:37–53CrossRefGoogle Scholar
  24. Nielsen OI, Koch MS, Madden CJ (2007) Inorganic phosphorus uptake in a carbonate-dominated seagrass ecosystem. Estuaries and Coasts 30(5):827–839Google Scholar
  25. Nixon SW (1980) Between coastal marshes and coastal waters: A review of twenty years of speculation and research on the role of salt marshes in estuarine productivity and water chemistry. In: Hamilton P, MacDonald KB (eds) Estuarine and Wetland Processes. Plenum Press, New YorkGoogle Scholar
  26. Orth RJ, Carruthers TB, Dennison WC, Duarte CM, Fourqurean JW, Heck KL, Hughes R, Kendick GA, Kenworthy WJ, Olyarnik S, Short FT, Waycott M, Williams SL (2006) A global crisis for seagrass ecosystems. Bioscience 56(12):987–996CrossRefGoogle Scholar
  27. Ovalle ARC, Rezende CE, Lacerda LD, Silva CAR (1990) Factors affecting the hydrochemistry of a mangrove tidal creek, Sepetiba Bay, Brazil. Estuarine, Coastal and Shelf Science 31:639–650CrossRefGoogle Scholar
  28. Price RM, Swart PK, Fourqurean JW (2006) Coastal groundwater discharge: an additional source of phosphorus for the oligotrophic wetlands of the Everglades. Hydrobiologia 569:23–36CrossRefGoogle Scholar
  29. Reddy KR (1982) Mineralization of nitrogen in organic soils. Soil Science Society of America Journal 46:561–566CrossRefGoogle Scholar
  30. Rivera-Monroy VH, Day JW, Twilley RR, Vera-Herrera F, Coronado-Molina C (1995) Flux of nitrogen and sediment in a fringe mangrove forest in Terminos Lagoon, Mexico. Estuarine, Coastal and Shelf Science 40:139–160CrossRefGoogle Scholar
  31. Rivera-Monroy VH, Twilley RR, Davis SE, Childers DL, Simard M, Chambers R, Jaffe R, Boyer JN, Rudnick DT, Zhang K, Castañeda-Moya E, Ewe SM, Price RM, Coronado-Molina C, Ross M, Smith TJ, Michot B, Meselhe E, Nuttle W, Troxler TG, Noe GB (2011) The role of the Everglades Mangrove Ecotone Region (EMER) in regulating nutrient cycling and wetland productivity in south Florida. Critical Reviews in Environmental Science and Technology 41:633–669CrossRefGoogle Scholar
  32. Ross MS, Meeder JF, Sah JP, Ruiz PL, Telesnicki GL (2000) The southeast saline Everglades revisited: 50 years of coastal vegetation change. Journal of Vegetation Science 11:101–112CrossRefGoogle Scholar
  33. Rysgaard S, Risgaard-Petersen N, Sloth NP, Jensen K, Nielsen LP (1994) Oxygen regulation of nitrification and denitrification in sediments. Limnology and Oceanography 39:1643–1652CrossRefGoogle Scholar
  34. Rysgaard S, Thastum P, Dalsgaard T, Christensen PB, Sloth NP (1999) Effects of salinity on NH4 + adsorption capacity, nitrification, and denitrification in Danish estuarine sediments. Estuaries 22:21–30CrossRefGoogle Scholar
  35. Saha AK, Moses C, Price RM, Engel V, Smith TJ, Anderson G (2012) A hydrological budget (2002–2008) for a large subtropical wetland ecosystem indicates marine groundwater discharge accompanies diminished freshwater flow. Estuaries and Coasts 35(2):459–474CrossRefGoogle Scholar
  36. Seitzinger SP, Nixon SW, Pilson MQ (1984) Denitrification and nitrous oxide production in a coastal marine ecosystem. Limnology and Oceanography 29:73–83CrossRefGoogle Scholar
  37. Seitzinger SP, Gardner WS, Spratt AK (1991) The effect of salinity on ammonium sorption in aquatic sediments: Implications for benthic nutrient recycling. Estuaries 14:167–174CrossRefGoogle Scholar
  38. Smith TJ, Hudson HH, Robblee MB, Powell GVN, Isdale PJ (1989) Freshwater flow from the Everglades to Florida Bay: A historical reconstruction based on fluorescent banding in the coral Solenatrea bournoni. Bulletin Of Marine Science 44:274–282Google Scholar
  39. Twilley RR (1995) Properties of mangrove ecosystems related to the energy signature of coastal environments. In: Hall CAS (ed) Maximum Power: The Ideas and Applications of H.T. Odum. University Press of Colorado, NiwotGoogle Scholar
  40. Valiela I, Bowen JL, York JK (2001) Mangrove forests: one of the world’s threatened major tropical environments. Bioscience 51(10):807–815CrossRefGoogle Scholar
  41. Zapata-Rios X, Price RM (2012) Estimates of groundwater discharge to a coastal wetland using multiple techniques: Taylor Slough, Everglades National Park, USA. Hydrogeology Journal 20(8):1651–1668CrossRefGoogle Scholar

Copyright information

© Society of Wetland Scientists 2013

Authors and Affiliations

  • Kung Jen Liu
    • 1
  • Hsiu Ping Li
    • 1
  • Stephen E. DavisIII
    • 1
    • 2
  1. 1.Department of Wildlife & Fisheries SciencesTexas A&M UniversityCollege StationUSA
  2. 2.Palmetto BayUSA

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