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Sawgrass (Cladium jamaicense) responses as early indicators of low-level phosphorus enrichment in the Florida Everglades

Abstract

Anthropogenic phosphorus (P) inputs to the Florida Everglades have produced dramatic changes in the wetland vegetation of this otherwise oligotrophic system. While the proliferation of undesirable plant species in response to enrichment has been well documented, nutrient-related changes in the physiological and morphological attributes of existing vegetation, prior to any shifts in species composition or changes in the spatial extent of certain taxa, have yet to be adequately characterized. In this experiment, three sawgrass-dominated areas were enriched with P for 3 years at rates of 0.4 g P/m2/year (HP), 0.1 g P/m2/year (LP), or 0 g P/m2/year (controls) to assess potential impacts of P-enriched discharges from stormwater treatment areas into the Everglades. Elevated concentrations of TP in rhizomes and leaves and reduced ratios of leaf N:P were detected in HP plants within ~1 year at most sites. Live leaf densities, plant heights, and plant densities of the HP groups were generally higher than LP and control groups after 2 years, a pattern that was evident even after major fire events. Total aboveground biomass was significantly elevated in both HP and LP treatments at two of the three sites after 3 years. No change in species composition was detected during the study. Planned hydrologic restoration measures will increase P loads into parts of the Everglades that have not previously experienced anthropogenic P enrichment. Monitoring native vegetation such as sawgrass can be a sensitive and relatively robust means of detecting unintended P enrichment in these areas prior to shifts in vegetation community composition or changes in area cover of key species.

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References

  1. Box GEP (1954a) Some theorems on quadratic forms applied in the study of analysis of variance problems: I. Effect of inequality of variances in the one-way classification. Ann Math Stat 25:290–302

  2. Box GEP (1954b) Some theorems on quadratic forms applied in the study of analysis of variance problems: II. Effect of inequality of variances and of correlation of errors in the two-way classification. Ann Math Stat 25:484–498

  3. Box GEP, Anderson SL (1955) Permutation theory in the derivation of robust criteria and the study of departures from assumptions. J Royal Stat Soc 17:1–34

  4. Chiang C, Craft CB, Rogers DW, Richardson CJ (2000) Effects of 4 years of nitrogen and phosphorus additions on Everglades plant communities. Aquat Bot 68:61–78

  5. Chimney MJ, Goforth G (2001) Environmental impacts to the Everglades ecosystem: a historical perspective and restoration strategies. Water Sci Tech 44:93–100

  6. Corstanje R, Grunwald S, Reddy KR, Osborne TZ, Newman S (2006) Assessment of the spatial distribution of soil properties in a Northern Everglades marsh. J Environ Qual 35:938–949

  7. Craft C, Vymazal J, Richardson C (1995) Response of Everglades plant communities to nitrogen and phosphorus additions. Wetlands 15:258–271

  8. Craft C, Krull K, Graham S (2007) Ecological indicators of nutrient enrichment, freshwater wetlands, Midwestern United States (U.S.). Ecological Indicators 7:733–750

  9. Crozier GE, Gawlik DE (2001) Avian response to nutrient enrichment in an oligotrophic wetland, the Florida Everglades. Condor 104:631–642

  10. Daoust R, Childers D (2004) Effects of low-level phosphorus additions on two freshwater Everglades wetland communities. In: Determination of the effects of phosphorus addition on several Everglades marsh communities, M.S. Thesis, Florida International University, Miami, FL, pp 82–159

  11. Davis SM (1994) Phosphorus inputs and vegetation sensitivity in the Everglades. In: Davis SM, Ogden JC (eds) Everglades: the ecosystem and its restoration. St. Lucie Press, Delray Beach, FL, pp 357–378

  12. Detenbeck NE, Galatowitsch SM, Atkinson J, Ball H (1999) Evaluating perturbations and developing restoration strategies for inland wetlands in the Great Lakes Basin. Wetlands 19:789–820

  13. Fong P, Boyer KE, Zedler JB (1998) Developing an indicator of nutrient enrichment in coastal estuaries and lagoons using tissue nitrogen content of the opportunistic alga, Enteromorpha intestinalis (L. Link). J Exp Mar Biol Ecol 231:63–80

  14. Galatowitsch SM, van der Valk AG (1996) Characteristics of recently restored wetlands in the prairie pothole region. Wetlands 16:75–83

  15. Hinkle RL, Mitsch WJ (2005) Salt marsh vegetation recovery at salt hay farm wetland restoration sites on Delaware Bay. Ecol Eng 25:240–251

  16. Hsu PL (1938) Contributions to the theory of Student’s t test as applied to the problem of two samples. Stat Res Mem 2:1–24

  17. KunSeop L, Short FT, Burdick DM (2004) Development of a nutrient pollution indicator using the seagrass, Zostera marina, along nutrient gradients in three New England estuaries. Aquat Bot 78:197–216

  18. Leeds JA, Smith SM, Garrett PB (2002) Seedbanks and their potential role in the vegetation dynamics of a Northern Everglades Marsh. Fla Sci 65:16–34

  19. Lindman HR (1974) Analysis of variance in complex experimental designs. W. H. Freeman & Co., San Francisco

  20. McCormick PV, Newman S, Miao S, Gawlik DE, Marley D (2002) Effects of anthropogenic phosphorus inputs on the Everglades. In: Porter JW, Porter KG (eds) The Everglades, Florida bay and coral reefs of the Florida keys: an ecosystem sourcebook. CRC Press, Boca Raton, FL, p 83

  21. Miao SL, Sklar FH (1998) Biomass and nutrient allocation of sawgrass and cattail along a nutrient gradient in the Florida Everglades. Wetl Ecol Manage 5:245–263

  22. Mushet DM, Euliss NH Jr, Shaffer TL (2002) Floristic quality assessment of one natural and three restored wetland complexes in North Dakota, USA. Wetlands 22:126–138

  23. Newman S, Grace JB, Koebel JW (1996) Effects of nutrients and hydroperiod on Typha, Cladium, and Eleocharis: implications for Everglades restoration. Ecol Appl 6:774–783

  24. Newman S, Kumpf H, Laing JA, Kennedy WC (2001) Decomposition Responses to Phosphorus Enrichment in an Everglades (USA) Slough. Biogeochem 54:229–250

  25. Newman S, McCormick PV, Miao SL, Laing JA, Kennedy WC, O’Dell MB (2004) The effect of phosphorus enrichment on the nutrient status of a northern Everglades slough. Wetl Ecol Manage 12:63–79

  26. Noe GB, Childers DL, Edwards AL, Gaiser E, Jayachandran K, Lee D, Meeder J, Richards J, Scinto LJ, Trexler JC, Jones RD (2002) Short-term changes in phosphorus storage in an oligotrophic Everglades wetland ecosystem receiving experimental nutrient enrichment. Biogeochem 59:239–267

  27. Pietro K, Bearzotti R, Chimney M, Germain G, Iricanin N, Piccone T, SamFilippo K (2006) STA performance, compliance and optimization. Chapter 4. 2006 South Florida environmental report. South Florida Water Management District, West Palm Beach, FL

  28. Posey MH, Alphin TD, Powell CM (1997) Plant and infaunal communities associated with a created marsh. Estuaries 20:42–47

  29. RECOVER (2004) CERP Monitoring and assessment plan: part 1 monitoring and supporting research: restoration coordination and verification (RECOVER): Jacksonville, Fl, United States Army Corps of Engineers, and West Palm Beach, Fl, South Florida Water Management District. Available online: http://www.evergladesplan.org/pm/recover/recover_map.cfm

  30. Rutchey K, Vilchek L (1999) Air photointerpretation and satellite imagery analysis techniques for mapping cattail coverage in a northern Everglades impoundment. Photogramm Eng Rem Sens 65:185–191

  31. Sklar F, McVoy C, Zanzee R, Gawlik DE, Tarboton K, Rudnick D, Miao S (2002) The effects of altered hydrology on the Everglades. In: Porter JS, Porter KG (eds) The Everglades, Florida bay and coral reefs of the Florida keys: an ecosystem sourcebook. CRC Press, Boca Raton, FL, p 39

  32. Smith SM, Newman S (2001) Growth of southern cattail (Typha domingensis, Pers.) in response to fire-related soil conditions in a northern Everglades marsh. Wetlands 21:363–369

  33. Smith SM, Garrett PB, Leeds JA, McCormick PV (2000) Evaluation of a non-destructive field method for estimating live and dead aboveground biomass in monospecific wetland macrophyte stands using a hand-held digital camera. Aquat Bot 67:69–77

  34. Smith SM, Newman S, Garrett PB, Leeds JA (2001) Effects of above- and below-ground fire on soils of a northern Everglades marsh. J Environ Qual 30:1998–2005

  35. Stein ED, Ambrose RF (1998) A rapid impact assessment method for use in a regulatory context. Wetlands 18:379–392

  36. Teal JM, Weishar L (2005) Ecological engineering, adaptive management and restoration management in Delaware Bay salt marsh restoration. Ecol Eng 25:304–314

  37. United States Army Corps of Engineers (1994) Clean Water Act Section 404 Permit. No. 199404532. U.S. Army Corps of Engineers. Jacksonville District, Jacksonville, FL

  38. Urban N, Davis SM, Aumen N (1993) Fluctuations in sawgrass and cattail densities in Everglades Water Conservation Area 2A under varying nutrient, hydrologic and fire regimes. Aquat Bot 46:203–223

  39. van der Valk AG, Rosburg TR (1997) Seed bank composition along a phosphorus gradient in the northern Florida Everglades. Wetlands 17:228–236

  40. Visser JM, Sasser CE, Chabrek RH, Linscombe RG (1999) Long-term vegetation change in Louisiana tidal marshes. Wetlands 19:168–175

  41. Weieher E, Wisheu IC, Keddy PA, Moore DRJ (1996) Establishment, persistence, and management implications of experimental wetland plant communities. Wetlands 16:208–218

  42. Weinstein MP, Balletto JH, Teal JM, Ludwig DF (1997) Success criteria and adaptive management for a large-scale wetland restoration project. Wetl Ecol Manage 4:111–127

  43. Wigand C, McKinney RA, Cole ML, Thursby GB, Cummings J (2007) Varying stable nitrogen isotope ratios of different coastal marsh plants and their relationships with wastewater nitrogen and land use in New England, USA. Env Mon Assess 131:71–81

  44. Wu Y, Sklar FH, Rutchey K (1997) Analysis and simulations of fragmentation patterns in the Everglades. Ecol Appl 7:268–276

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Acknowledgement

This work was funded by the South Florida Water Management District, 3301 Gun Club Road, West Palm Beach, FL 33406.

Author information

Correspondence to Stephen M. Smith.

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Smith, S.M., Leeds, J.A., McCormick, P.V. et al. Sawgrass (Cladium jamaicense) responses as early indicators of low-level phosphorus enrichment in the Florida Everglades. Wetlands Ecol Manage 17, 291–302 (2009). https://doi.org/10.1007/s11273-008-9107-5

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Keywords

  • Ecological indicators
  • Everglades
  • Phosphorus
  • Plant morphology
  • Sawgrass
  • Vegetation community
  • Wetlands