, Volume 19, Issue 3, pp 740–750 | Cite as

Light requirements of seagrassesHalodule wrightii andSyringodium filiforme derived from the relationship between diffuse light attenuation and maximum depth distribution

  • W. Judson Kenworthy
  • Mark S. Fonseca


The correspondence between maximum depth of growth (Zmax) for two seagrases,Halodule wrightii andSyringodium filiforme, and the attenuation of diffuse photosynthetically active radiation (KdPAR) were evaluated over a 3.5-yr period in the southern Indian River Lagoon, Florida. The lower limit of seagrass depth distribution was controlled by light availability. Both species grew to the same maximum depth, indicating they have similar minimum light requirements. Based on average annual values of KdPAR, estimates of seagrass minimum light requirements ranged from 24% to 37% of the light just beneath the water surface (Io), much hgiehr than a photic zone for many phytoplankton and macroalgae (1–5% incident light). In less transparent waters of Hobe Sound, where turbidity (NTU) and color (Pt-Co) had their highest concentrations, minimum light requirements for growth were greatest. These results suggest that more sophisticated optical models are needed to identify specific water quality constituents affecting the light environment of seagrasses. Water quality criteria and standards needed to protect seagrasses from decreasing water transparency must be based on parameters that can be routinely measured and reasonably managed.


Marine Ecology Progress Series Water Quality Criterion Submerse Aquatic Vegetation Aquatic Botany Light Requirement 
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Literature Cited

  1. American Public Health Association, American Water Resources Association, and Water Pollution Control Federation. 1975. Standard Methods for the examination of Water and Wastewater. 14th edition. American Public Health Associations, Washington, D.C.Google Scholar
  2. Backman, T. W. andT. C. Barilotti. 1976. Irradiation reduction: Effects on standing crops of eelgrass,Zostera marina, in a coastal lagoon.Marine Biology 34:33–44.CrossRefGoogle Scholar
  3. Bulthuis, D. A. 1983. Effects of in situ light reduction on density and growth of the seagrassHeterozostera tasmanica (Martens ex Aschers.) den Hartog in Western Port, Victoria, Australia.Journal of Experimental Marine Biology and Ecology 67:91–103.CrossRefGoogle Scholar
  4. Dawes, C. J. 1987. The dynamic seagrasses of the Gulf of Mexico and Florida coasts.Florida Marine Research Publication 42: 25–38.Google Scholar
  5. De Jonge, V. N. andD. J. De Jonge. 1992. Role of tide, light and fisheries in the decline ofZostera marina L. in the Dutch Wadden Sea.Netherlands Institute of Sea Research 20:161–176.Google Scholar
  6. Dennison, W. C. 1987. Effects of light on seagrass photosynthesis, growth and depth distribution.Aquatic Botany 27:15–26.CrossRefGoogle Scholar
  7. Dennison, W. C. 1991. Photosynthetic and growth responses of tropical and temperature seagrasses in relation to secchi depth, light attenuation and daily light period, p. 133–144.In W. J. Kenworthy andD. E. Haunert (eds.), The Light Requirements of Seagrasses: Proceedings of a Workshop to Examine the Capability of Water Quality Criteria, Standards and Monitoring Programs to Protect Seagrases. National Oceanic and Atmospheric Administration Technical Memorandum NMFS-SEFC-287. Beaufort, North Carolina.Google Scholar
  8. Dennison, W. C., R. J. Orth, K. A. Moore, J. C. Stevenson, V. Carter, S. Kollar, P. W. Bergstrom, andR. A. Batiuk. 1993. Assessing water quality with submersed aquatic vegetation.Bioscience 43:86–94.CrossRefGoogle Scholar
  9. Drew, E. A. 1979. Physiological aspects of primary production in seagrasses.Aquatic Botany 7:139–150.CrossRefGoogle Scholar
  10. Duarte, C. M. 1991. Seagrass depth limits.Aquatic Botany 40: 363–377.CrossRefGoogle Scholar
  11. Dunton, K. H. 1994. Seasonal growth and biomass of the subtropical seagrassHalodule wrightii in relation to continuous measurements of underwater irradiance.Marine Biology 20: 479–489.CrossRefGoogle Scholar
  12. Dunton, K. H. andD. A. Tomasko. 1994. In situ photosynthesis in the seagrassHalodule wrightii in a hypersaline subtropical lagoon.Marine Ecology Progress Series 107:281–293.CrossRefGoogle Scholar
  13. Fonsega, M. S., G. W. Thayer, andW. J. Kenworthy. 1987. The use of ecological data in the implementation and management of seagrass restorations.Florida Marine Research Publication 42:175–188.Google Scholar
  14. Fourqurean, J. W. andJ. C. Zieman. 1991. Photosynthesis, respiration and whole plant carbon budget of the seagrassThalasia testudinum.Marine Ecology Progress Series 69:161–170.CrossRefGoogle Scholar
  15. Gallegos, C. L. 1994. Refining habitat requirements of submersed aquatic vegetation: Role of optical models.Estuaries 17:198–209.CrossRefGoogle Scholar
  16. Gallegos, C. L., D. L. Correll, andJ. W. Pierce. 1990. Modeling spectral diffuse attenuation, absorption, and scattering coefficients in a turbid estuary.Limnology and Oceanography 35: 1486–1502.CrossRefGoogle Scholar
  17. Gallegos, C. L. andW. J. Kenworthy. 1996. Seagrass depth limits in the Indian River Lagoon (Florida, USA): Application of a water quality optical model.Estuarine Coastal Shelf Science 42:267–288.CrossRefGoogle Scholar
  18. Gallegos, M. E., M. Merino, A. Rodriguez, N. Marba, andC. M. Duarte. 1994. Growth patterns and demography of pioneer Caribbean seagrassesHalodule wrightii andSyringodium filiforme.Marine Ecology Progress Series 109:99–104.CrossRefGoogle Scholar
  19. Giesen, W. B. J. T., M. M. van Katwijk, andC. den Hartog. 1990. Eelgrass condition and turbidity in the Dutch Wadden Sea.Aquatic Botany 37:71–85.CrossRefGoogle Scholar
  20. Goldsborough, W. J. andW. M. Kemp. 1988. Light responses of a submersed macrophyte: Implications for survival in turbid tidal water.Ecology 69:1775–1786.CrossRefGoogle Scholar
  21. Gordon, D. M., K. A. Grey, S. C. Chase, andC. J. Simpson. 1994. Changes to the structure and productivity of aPosidonia sinuosa meadow during and after imposed shading.Aquatic Botany 47:265–275.CrossRefGoogle Scholar
  22. Hall, M. O., D. A. Tomasko, and F. X. Courtney. 1991. Responses ofThalassia testudinum to in situ light reduction, p. 85–94.In W. J. Kenworthy and D. E. Haunert (eds.), The Light Requirements of Seagrasses: Proceedings of a Workshop to Examine the Capability of Water Quality Criteria, Standards and Monitoring Programs to Protect Seagrasses, National Oceanic and Atmospheric Administration Technical Memorandum NMFS-SEFC-287. Beaufort, North Carolina.Google Scholar
  23. Iverson, R. L. andH. F. Bittaker. 1986. Seagrass distribution in the eastern Gulf of Mexico.Estuarine Coastal and Shelf Science 22:577–602.CrossRefGoogle Scholar
  24. Kenworthy, W. J. 1992. Protecting fish and wildlife habitat through a better understanding of the minimum light requirements of subtropical-tropical seagrasses in the southeastern United States and Caribbean basin. Ph.D. Thesis, North Carolina State University, Raleigh, North Carolina.Google Scholar
  25. Kenworthy, W. J. and D. E. Haunert. 1991. The light requirements of seagrasses: Proceedings of a workshop to examine the capability of water quality criteria, standards and monitoring programs to protect seagrasses. National Oceanic and Atmospheric Administration Technical Memorandum NMES-SEFC-287.Google Scholar
  26. Kirk, J. T. O. 1983. Light and photosynthesis in aquatic ecosystems. Cambridge University Press, Cambridge.Google Scholar
  27. Kirk, J. T. O. 1988. Optical water quality—What does it mean and how should we measure it?Journal of the Water Pollution Control Federation 60:194–197.Google Scholar
  28. Kraemer, G. P. andR. S. Alberte. 1993. Age-related patterns of metabolism and biomass in subterranean tissues ofZostera marina (eelgrass).Marine Ecology Progress Series 95:193–203.CrossRefGoogle Scholar
  29. Lefebvre, L. W. and J. A. Powell. 1990. Manatee grazing impacts on seagrasses in Hobe Sound and Jupiter Sound, January–February 1989. Final Report to the Marine Mammal Commission, Contract #T6223915-2.Google Scholar
  30. McPherson, B. F. andR. L. Miller. 1987. The vertical attenuation of light in Charlotte Harbor, a shallow, subtropical estuary, southwestern Florida.Estuarine Coastal Shelf Science 25: 721–737.CrossRefGoogle Scholar
  31. Miller, R. L. andB. F. McPherson. 1995. Modeling photosynthetically active radiation in water of Tampa Bay, Florida, with emphasis on the geometry of incident irradiance.Estuarine Coastal Shelf Science 40:359–377.CrossRefGoogle Scholar
  32. Morel, A. 1978. Available, usable, and stored radiant energy in relation to marine photosynthesis.Deep-Sea Research 25:673–688.CrossRefGoogle Scholar
  33. Morris, L. J. andD. A. Tomasko. 1993. Proceedings and conclusions of workshops on: Submerged aquatic vegetation initiative and photosynthetically active radiation. Special Publication SJ93-SP13. St. Johns River Water Management District, Palatka, Florida.Google Scholar
  34. National Technical Adwisory Committee to the Secretary of the Interior. 1968. Report of the Committee on Water Quality Criteria. United States Government Printing Office, Washington, D.C. Document 0-287-250.Google Scholar
  35. Neverauskas, V. P. 1968. Response of aPosidonia community to prolonged reduction in light.Aquatic Botany 31:361–366.CrossRefGoogle Scholar
  36. Olesen, B. andK. Sand-Jensen. 1993. Seasonal acclimatization of eelgrassZostera marina growth to light.Marine Ecology Progress Series 94:91–99.CrossRefGoogle Scholar
  37. Onuf, C. P. 1991. Light requirements ofHalodule wrightii, Syringodium filiforme, andHalophila engelmanni in a heterogeneous and variable environment inferred from long-term monitoring, p. 95–105.In W. J. Kenworthy and D. E. Haunert (eds.), The Light Requirements of Seagrasses: Proceedings of a Workshop to Examine the Capability of Water Quality Criteria, Standards and Monitoring Programs to Protect Seagrasses. National Oceanic and Atmospheric Administration Technical Memorandum NMFS-SEFC-287.Google Scholar
  38. Onuf, C. P. 1994. Seagrasses, dredging and light in Laguna Madre, Texas, U.S.A..Estuarine Coastal and Shelf Science 39:75–91.CrossRefGoogle Scholar
  39. Pangallo, R. A. andS. S. Bell. 1988. Dynamics of the above-ground and belowground structure of the seagrassHaladule wrightii.Marine Ecology Progress Series 43:297–301.CrossRefGoogle Scholar
  40. Parsons, T. R., M. Takahashi, andB. Hargrave. 1984. Biological Oceanographic Processes. Pergamon Press, Oxford.Google Scholar
  41. Phillips, R. C. andR. R. Lewis. 1983. Influence of environmental gradients on variations in leaf widths and transplant success in North American seagrasses.Marine Technology Society Journal 17:59–68.Google Scholar
  42. Pregnall, A. M., R. D. Smith, T. A. Kursar, andR. S. Alberte. 1984. Metabolic adaptation ofZostera marina (eelgrass) to diurnal periods of root anoxia.Marine Biology 83:141–147.CrossRefGoogle Scholar
  43. Pulich, W. M. 1982. Edaphic factors related to shoalgrass (Halodule wrightii Aschers.) production.Botanica Marina 25:467–475.CrossRefGoogle Scholar
  44. SAS. 1990. Procedures Guide, Version 6, Third edition. SAS Institute, Gary, North Carolina.Google Scholar
  45. Short, F. T., J. Montgomery, C. F. Zimmermann, andC. A. Short. 1993. Production and nutrient dynamics of aSyringodium filiforme Kutz. seagrass bed in Indian River Lagoon, Florida.Estuaries 16:323–334.CrossRefGoogle Scholar
  46. Smith, R. D., A. M. Pregnall, andR. S. Alberte. 1988. Effects of anaerobiosis on root metabolism of the seagrassZostera marina L. (eelgrass).Marine Biology 98:131–141.CrossRefGoogle Scholar
  47. Sokal, R. R. andF. J. Rohlf. 1981. Biometry, 2nd ed. W. H. Freeman and Company, New York, New York, 859 p.Google Scholar
  48. Strickland, J. D. H. and T. R. Parsons. 1968. A Practical Handbook of Seawater Analysis. Fisheries Research Board of Canada, Bulletin No. 167. Ottawa, Canada.Google Scholar
  49. Tomasko, D. A. andC. J. Dawes. 1989. Evidence for physiological integration between shaded and unshaded short shoots ofThalassia testudinum.Marine Ecology Progress Series 54:299–305.CrossRefGoogle Scholar
  50. Thompson, M. J. 1978. Species composition and distribution of seagrass beds in the Indian River Lagoon, Florida.Florida Scientist 41:90–96.Google Scholar
  51. Tomlinson, P. B. 1974. Vegetative morphology and meristem dependence—The foundation of productivity in seagrasses.Aquaculture 4:107–130.CrossRefGoogle Scholar
  52. United States Environmental Protection Agency. 1976. Quality Criteria for Water. United States Environmental Protection Agency, Washington, D.C.Google Scholar
  53. Vincente, V. P. andJ. A. Rivera. 1982. Depth limits of the seagrassThalassia testudinum (Konig) in Jobos and Guayanilla Bays, Puerto Rico.Caribbean Journal of Science 17:73–77.Google Scholar
  54. Virnstein, R. W. andK. D. Cairns. 1986. Seagrass maps of the Indian River Lagoon. Final Report to the Coastal Zone Management Program. Florida Department of Environmental Regulation, Tallahassee, Florida.Google Scholar
  55. Williams, S. L. 1988. Disturbance and recovery of a deep-water Caribbean seagrass bed.Marine Ecology Progress Series 42:63–71.CrossRefGoogle Scholar
  56. Zieman, J. C. 1982. The ecology of the seagrasses of south Florida: A community profile. United States Fish and Wildlife Service, Office of Biological Services, FWS/OBS-82/25. Washington, D.C.Google Scholar
  57. Zieman, J. C. and R. T. Zieman. 1989. The ecology of the seagrass meadows of the west coast of Florida: A community profile. United States Fish and Wildlife Service Biological Services Report 85 (7.25). Washington, D.C.Google Scholar
  58. Zimmerman, R. C., R. D. Smith, andR. S. Alberte. 1989. Thermal acclimation and whole-plant carbon balance inZostera marina L. (eelgrass).Journal of Experimental Marine Biology and Ecology 130:93–109.CrossRefGoogle Scholar
  59. Zimmerman, R. C., J. L. Reguzzoni, S. Wyllie-Echeverria, M. Josselyn, andR. S. Alberte. 1991. Assessment of environmental suitability for growth ofZostera marina L. (eelgrass) in San Francisco Bay.Aquatic Botany 39:353–366.CrossRefGoogle Scholar
  60. Zimmerman, R. C., A. Cabello-Pasini, andR. S. Alberte. 1994. Modeling daily carbon gain of aquatic macrophytes from quantum flux measurements: A comparative analysis.Marine Ecology Progress Series 114:185–196.CrossRefGoogle Scholar

Copyright information

© Estuarine Research Federation 1996

Authors and Affiliations

  • W. Judson Kenworthy
    • 1
  • Mark S. Fonseca
    • 1
  1. 1.Beaufort Laboratory Southeast Fisheries Science Center National Marine Fisheries ServiceNational Oceanic and Astmospheric AdministrationBeaufort

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