Abstract
The effects of salinity on Taxodium distichum seedlings have been well documented, but few studies have examined mature trees in situ. We investigated the environmental drivers of T. distichum growth along a salinity gradient on the Waccamaw (South Carolina) and Savannah (Georgia) Rivers. On each river, T. distichum increment cores were collected from a healthy upstream site (Upper), a moderately degraded mid-reach site (Middle), and a highly degraded downstream site (Lower). Chronologies were successfully developed for Waccamaw Upper and Middle, and Savannah Middle. Correlations between standardized chronologies and environmental variables showed significant relationships between T. distichum growth and early growing season precipitation, temperature, and Palmer Drought Severity Index (PDSI). Savannah Middle chronology correlated most strongly with August river salinity levels. Both lower sites experienced suppression/release events likely in response to local anthropogenic impacts rather than regional environmental variables. The factors that affect T. distichum growth, including salinity, are strongly synergistic. As sea-level rise pushes the freshwater/saltwater interface inland, salinity becomes more limiting to T. distichum growth in tidal freshwater swamps; however, salinity impacts are exacerbated by locally imposed environmental modifications.



References
Anderson CJ, Lockaby BG (2011) Seasonal patterns of river connectivity and saltwater intrusion in tidal freshwater forested wetlands. River Res Appl 28(7):814–826
Brinson MM, Christian RR, Blum LK (1995) Multiple states in the sea-level induced transition from terrestrial forest to estuary. Estuaries 18(4):648–659
Bristol P, Devlin R, Baize D, Boozer A (2005) South Carolina—Savannah River basin facilities water use report 2004. South Carolina Department of Health and Environmental Control, Columbia
Brown S (1981) A comparison of the structure, primary productivity, and transpiration of cypress ecosystems in. Florida Ecol Monogr 51(4):403–427
Conner WH, Askew GR (1992) Response of baldcypress and loblolly pine seedlings to short-term saltwater flooding. Wetlands 12(3):230–233
Conner WH, Doyle TW, Krauss KW (eds) (2007) Ecology of tidal freshwater forested wetlands of the Southeastern United States. Springer Verlag, Dordretcht
Cook E, Krusic P (2005) Program ARSTAN manual tree-ring laboratory, Lamont Doherty earth observatory of Columbia University. Palisades, New York
Cormier N, Krauss KW, Conner WH (2013) Periodicity in stem growth and litterfall in tidal freshwater forested wetlands: influence of salinity and drought on nitrogen recycling. Estuar Coasts 36(3):533–546
Day RH, Williams TM, Swarzenski CM (2007) Hydrology of tidal freshwater forested wetlands of the southeastern United States. In: Conner WH, Doyle TW, Krauss KW (eds) Ecology of tidal freshwater forested wetlands of the Southeastern United States. Springer Verlag, Dordretcht, pp 29–63
Demaree D (1932) Submerging experiments with. Taxodium Ecol 13(3):258–262
Desantis LRG, Bhotika S, Williams K, Putz FE (2007) Sea level rise and drought interactions accelerate forest decline on the gulf coast of Florida. USA Glob Chang Biol 13(11):2349–2360
R Development Core Team (2005) R: A language and environment for statistical computing, reference index version 2.2.1. R foundation for statistical computing, Vienna, Austria. ISBN 3-900051-07-0, URL http://www.R-project.org
Doyle TW, Conner WH, Ratard M, Inabinette LW (2007a) Assessing the impact of tidal flooding and salinity on long-term growth of baldcypress under changing climate and riverflow. In: Conner WH, Doyle TW, Krauss KW (eds) Ecology of tidal freshwater forested wetlands of the Southeastern United States. Springer Verlag, Dordretcht, pp 411–445
Doyle TW, O’Neil CP, Melder MPV, From AS, Palta MM (2007b) Tidal freshwater swamps of the southeastern United States: effects of land use, hurricanes, sea-level rise, and climate change. In: Conner WH, Doyle TW, Krauss KW (eds) Ecology of tidal freshwater forested wetlands of the Southeastern United States. Springer Verlag, Dordretcht, pp 1–28
Duberstein J, Kitchens W (2007) Community composition of select areas of tidal freshwater forest along the Savannah River. In: Conner WH, Doyle TW, Krauss KW (eds) Ecology of tidal freshwater forested wetlands of the Southeastern United States. Springer Verlag, Dordretcht, pp 321–348
Edgar WB (1984) History of Santee Cooper. RL Bryan Company, 1934–1984
Field CB, Mortsch LD, Brklacich M, Forbes DL, Kovacs P, Patz JA et al (2007) North America. In: Parry ML, Canziani OF, Palutikof JP, van der Linden PJ, Hanson CE (eds) Climate change 2007: Impacts, adaptation and vulnerability Contribution of working group II to the fourth assessment report of the Intergovernmental panel on climate change. Cambridge University Press, Cambridge, pp 617–652
Grissino-Mayer HD (2001) Evaluating crossdating accuracy: a manual and tutorial for the computer program COFECHA. Tree-Ring Res 57(2):205–221
Hackney CT, Avery GB, Leonard LA, Posey M, Alphin T (2007) Biological, chemical, and physical characteristics of tidal freshwater swamp forests of the lower Cape Fear River/Estuary, North Carolina. In: Conner WH, Doyle TW, Krauss KW (eds) Ecology of tidal freshwater forested wetlands of the Southeastern United States. Springer Verlag, Dordretcht, pp 183–221
Hesse I, Day J, Doyle T (1998) Long-term growth enhancement of baldcypress (Taxodium distichum) from municipal wastewater application. Environ Manag 22(1):119–127
Hook DD (1984) Waterlogging tolerance of lowland tree species of the south. South J Appl For 8(3):136–149
International Paper (2013) Georgetown Retrieved 9-15-2013, from http://www.internationalpapercom/US/EN/Company/Facilities/Georgetownhtml
Krauss KW, Duberstein JA (2010) Sapflow and water use of freshwater wetland trees exposed to saltwater incursion in a tidally influenced. SC Watershed Can J Forest Res 40(3):525–535
Krauss KW, Duberstein JA, Doyle TW, Conner WH, Day RH, Inabinette LW et al (2009) Site condition, structure, and growth of baldcypress along tidal/non-tidal salinity gradients. Wetlands 29(2):505–519
Lemlich SK, Ewel KC (1984) Effects of wastewater disposal on growth rates of cypress trees. J Environ Qual 13(4):602–604
Mortl A, Munoz-Carpena R, Li Y (2006) Hydroperiod and soil water salinity in the bald cypress floodplains of the Loxahatchee River Paper presented at the Hydrology and Management of Forested Wetlands, Proceedings of the International Conference, New Bern, North Carolina, 395–402
Odum WE, Smith III TJ Hoover JK, McIvor CC (1984) Ecology of tidal freshwater marshes of the United States east coast: A community profile, us fish and wildlife service, FWS/OBS-83/17
Palta MM, Doyle TW, Jackson CR, Meyer JL, Sharitz RR (2012) Changes in diameter growth of Taxodium distichum in response to flow alterations in the Savannah River. Wetlands 32:59–71
Pearlstine LG, Kitchens WM, Latham PJ, Bartleson RD (1993) Tide gate influences on a tidal marsh. JAWRA J Am Water Resour Assoc 29(6):1009–1019
Pezeshki S (1990) A comparative study of the response of Taxodium distichum and Nyssa aquatica seedlings to soil anaerobiosis and salinity. For Ecol Manag 33:531–541
Pezeshki S, Patrick W, DeLaune R, Moser E (1989) Effects of waterlogging and salinity interaction on. Nyssa Aquat Seedlings Forest Ecol Manag 27(1):41–51
Regent Instruments (2005) WinDENDRO user manual http://www.regentinstrumentscom/assets/references.html
Rheinhardt RD, Hershner C (1992) The relationship of below-ground hydrology to canopy composition in five tidal freshwater swamps. Wetlands 12(3):208–216
Ross MS, O’Brien JJ, Sternberg LSL (1994) Sea-level rise and the reduction in pine forests in the. Florida Keys Ecol Appl 4(1):144–156
Sharitz RR, Lee LC (1985) Limit on regeneration process in southeastern riverine wetlands. In: Riparian ecosystems and their management: Reconciling conflicting uses USDA forest service, Fort Collins, CO, General Technical Report RM-120, 139–143
Sharitz RR, Irwin JE, Christy EJ (1974) Vegetation of swamps receiving reactor effluents. Oikos 25:7–13
South Carolina Department of Health and Environmental Control (2007) Watershed water quality assessment: PeeDee River basin No 005–07 Columbia. Bureau of Water, SC
Speer JH (2010) Fundamentals of tree-ring research tucson. University of Arizona Press, AZ
Stahle DW, Cleaveland MK (1992) Reconstruction and analysis of spring rainfall over the southeastern US for the past 1000 years. Bull Am Meteorol Soc 73(12):1947–1961
Stahle DW, Cleaveland MK, Hehr JG (1988) North Carolina climate changes reconstructed from tree rings: AD 372 to 1985. Science 240(4858):1517–1519
Stokes MA, Smiley TL (1996) An introduction to tree-ring dating tucson. University of Arizona Press, AZ
Williams K, Ewel KC, Stumpf RP, Putz FE, Workman TW (1999) Sea-level rise and coastal forest retreat on the west coast of Florida. USA Ecol 80(6):2045–2063
Yanosky T, Hupp C, Hackney C (1995) Chloride concentrations in growth rings of Taxodium distichum in a saltwater-intruded estuary. Ecol Appl 5(3):785–792
Young P, Keeland B, Sharitz R (1995) Growth response of baldcypress [Taxodium distichum (L) Rich.] to an altered hydrologic regime. Am Midl Nat 133:206–212
Acknowledgments
We thank William H. Conner, L. Wayne Inabinette, Jamie A. Duberstein, Jason K. Sullivan, and Nicole Cormier for assistance with core collections. We thank William Russell Webb (Savannah NWR) and M. Craig Sasser (Waccamaw NWR) for allowing access to refuge lands. This research was supported by the U.S. Geological Survey Climate and Land Use Change Research and Development Program. Any use of trade, product, or firm names if for descriptive purposes only and does not imply endorsement by the U.S. Government.
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Thomas, B.L., Doyle, T. & Krauss, K. Annual Growth Patterns of Baldcypress (Taxodium distichum) Along Salinity Gradients. Wetlands 35, 831–839 (2015). https://doi.org/10.1007/s13157-015-0659-x
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DOI: https://doi.org/10.1007/s13157-015-0659-x