Abstract
Since the 1970s, southwestern Georgia has seen significant decreases in annual stream flows and changes in seasonal rainfall patterns (i.e., slightly wetter winters and drier springs) that have implications for leaf breakdown processes in wetlands. In four separate study years (1999–2002), we examined leaf breakdown processes in two types of forested wetlands, floodplain and depressional. Using a reciprocal transfer design, litter bags containing black gum (Nyssa syhatica biflora) and water tupelo (Nyssa aquatica) were placed in three wetlands of each type. We predicted open wetlands (floodplain) would have faster breakdown rates than isolated wetlands (depressional), and water tupelo leaves acquired from high-nutrient wetlands (floodplain) would be less refractory and decompose faster than black gum leaves obtained from low-nutrient wetlands (depressional). There was no consistent pattern of one wetland type having faster breakdown rates than the other. Breakdown of water tupelo (k = −0.57 to −1.77 yr−1) was faster than black gum (k = −0.53 to −1.31 yr−1) in three out of eight instances (i.e., same wetland type and year); otherwise, no difference was detected between species. Results from the drier years (1999, 2000, and 2001) suggest that litter species was more important than wetland type in determining P levels in litter and in some instances N concentrations, but in the wetter year (2002) N and P patterns in litter differed by wetland type. This multiyear study allowed us to conclude that in drought years, moisture levels primarily influenced breakdown of organic matter, but in years with prolonged flooding, faster breakdown rates occurred in the wetland type and litter species with the higher nutrient levels. A 1.4 to 3-fold difference in breakdown rates among study years (for the same wetland type and litter) suggest that caution should be used in making conclusions based on a single decomposition study.
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Literature Cited
Andersen, D. C. and S. M. Nelson. 2003. Effects of river flow regime on cottonwood leaf litter dynamics in semi-arid northwestern Colorado. The Southwestern Naturalist 48: 188–201.
Barlocher, F., R. J. Mackay, and G. B. Wiggins. 1978. Detritus processing in a temporary vernal pool in southern Ontario. Archiv für Hydrobiologie 81: 269–95.
Battle, J. M. and S. W. Golladay. 2001. Hydroperiod influence on breakdown of leaf litter in cypress-gum wetlands. American Midland Naturalist 146: 128–45.
Battle, J. M., S. W. Golladay, and B. Clayton. 2001. Aquatic macroinvertebrates and water quality characteristics in five wetland types: preliminary results on biomonitoring. p. 333–36. In K. J. Hatcher (ed.) Proceedings of the 2001 Georgia Water Resources Conference. Athens, GA, USA.
Bedford, B. L., M. R. Walbridge, and A. Aldous. 1999. Patterns in nutrient availability and plant diversity of temperate North American wetlands. Ecology 80: 2151–69.
Brinson, M. M. 1977. Decomposition and nutrient exchange of litter in an alluvial swamp forest. Ecology 58: 601–9.
Brinson, M. M. 1990. Riverine forests. p. 87–141. In A. E. Lugo, M. Brinson, and S. Brown (eds.) Forested Wetlands. Ecosystems of the World No. 15. Elsevier, NY, USA.
Craft, C. B. and W. P. Casey. 2000. Sediment and nutrient accumulation in floodplain and depressional freshwater wetlands of Georgia, USA. Wetlands 20: 323–32.
Cuffney, T. F. and J. B. Wallace. 1987. Leaf litter processing in Coastal Plain streams and floodplains of southeastern Georgia, U.S.A. Archiv für Hydrobiologie/Supplement 76: 1–24.
Day, Jr., F. P. 1982. Litter decomposition rates in the seasonally flooded Great Dismal Swamp. Ecology 63: 670–78.
Day, Jr., F. P. 1983. Effects of flooding on leaf litter decomposition in microcosms. Oecologia 56: 180–84.
Duever, M. J., J. E. Carlson, and L. A. Riopelle. 1975. Ecosystem analysis at Corkscrew Swamp. p. 627–725. In H. T. Odum, K. C. Ewel, J. W. Ordway, and M. K. Johnston (eds.) Cypress Wetlands for Water Management, Recycling and Conservation. Second Annual Report NSF (RANN) and Rockefeller Foundation, Gainesville: Center for Wetlands, University of Florida, FL, USA.
Goering, H. K. and P. J. Van Soest. 1970. Forage fiber analyses (apparatus, reagents, procedures, and some applications). USDA Agricultural Handbook 379.
Hayes, L. R., M. L. Maslia, and W. C. Meeks. 1983. Hydrology and Model Evaluation of the Principal Artesian Aquifer, Dougherty Plain, Southwest Georgia. United States Geological Survey, Atlanta, GA, USA.
Hicks, D. W. and S. W. Golladay. 2006. Impacts of agricultural pumping on selected streams in southwestern Georgia. Submitted to Georgia Environmental Protection Division, Atlanta, GA, USA. Publication of the Jones Ecological Research Center, Newton, GA, USA.
Lachat Instruments. 1992. Total phosphorus in kjeldahl digests. QuikChem method 13-115-01-1-B. Lachat Instruments, Milwaukee, WI, USA.
Lee, A. A. and P. A. Bukaveckas. 2002. Surface water nutrient concentrations and litter decomposition rates in wetlands impacted by agriculture and mining activities. Aquatic Botany 74: 273–85.
Lockaby, B. G., A. L. Murphy, and G. L. Somers. 1996. Hydroperiod influences on nutrient dynamics in decomposing litter of a floodplain forest. Soil Science Society of America Journal 60: 1267–72.
Melillo, J. M., J. D. Aber, A. E. Linkins, A. Ricca, B. Fry, and K. J. Nadelhoffer. 1989. Carbon and nitrogen dynamics along the decay continuum: plant litter to soil organic matter. Plant Soil 115: 189–98.
National Climate Data Center. 2005. ClimVis, drought database. http://www.ncdc.noaa.gov/oa/climate/onlineprod/drought/main.html Accessed 8 August 2005.
Neatrour, M. A., J. H. Jones, and E. F. Benfield. 2004. Correlations between soil nutrient availability and fine-root biomass at two spatial scales in forested wetlands with contrasting hydrologic regimes. Canadian Journal of Forest Research 35: 2934–41.
Neatrour, M. A., J. R. Webster, and E. F. Benfield. 2004. The role of floods in particulate organic matter dynamics of a southern Appalachian river-floodplain ecosystem. Journal of North American Benthological Society 23: 198–213.
Neckles, H. A. and C. Neill. 1994. Hydrologic control of litter decomposition in seasonally flooded prairie marshes. Hydrobiologia 286: 155–65.
Nessel, J. 1978. Distribution and dynamics of organic matter and phosphorus in a sewage enriched cypress stand. M.S. Thesis. University of Florida, Gainesville, FL, USA.
Olson, J. S. 1963. Energy storage and the balance of producers and decomposers in ecological systems. Ecology 44: 322–32.
Qualls, R. G. and C. J. Richardson. 2000. Phosphorus enrichment affects litter decomposition, immobilization, and soil microbial phosphorus in wetland mesocosms. Soil Science Society of America Journal 64: 799–808.
Shure, D. J., M. R. Gottschalk, and K. A. Parsons. 1986. Litter decomposition processes in a floodplain forest. American Midland Naturalist 115: 314–27.
Suberkropp, K. and E. Chauvet. 1995. Regulation of leaf breakdown by fungi in streams: influences of water chemistry. Ecology 76: 1433–45.
Vogt, K. A., C. C. Grier, and D. J. Vogt. 1986. Production, turnover, and nutrient dynamics of above- and belowground detritus of world forests. Advances in Ecological Research 15: 303–77.
Watt, K. M. and S. W. Golladay. 1999. Organic matter dynamics in seasonally-inundated forested wetlands of the Gulf Coastal Plain. Wetlands 19: 139–48.
Webster, J. R. and E. F. Benfield. 1986. Vascular plant break-down in freshwater ecosystems. Annual Review of Ecology and Systematics 17: 567–94.
Wharton, C. H. and M. M. Brinson. 1979. Characteristics of southeastern river systems. p. 32–40. In R. R. Johnson and J. F. McCormick (eds.) Strategies for Protection and Management of Floodplain Wetlands and Other Riparian Ecosystems. U.S. Forest Service General Technical Report WO-12.
Yates, R. F. K. and F. P. Day, Jr. 1983. Decay rates and nutrient dynamics in confined and unconfined leaf litter in the Great Dismal Swamp. American Midland Naturalist 110: 37–45.
Zar, J. H. 1984. Biostatistical Analysis, second edition. Prentice-Hall, Inc., Englewood Cliffs, NJ, USA.
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Battle, J.M., Golladay, S.W. How hydrology, habitat type, and litter quality affect leaf breakdown in wetlands on the Gulf Coastal Plain of Georgia. Wetlands 27, 251–260 (2007). https://doi.org/10.1672/0277-5212(2007)27[251:HHHTAL]2.0.CO;2
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DOI: https://doi.org/10.1672/0277-5212(2007)27[251:HHHTAL]2.0.CO;2