Diurnal and Tidal Variability in the Photobiology of the Seagrass Halophila johnsonii in a Riverine Versus Marine Habitat
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The threatened seagrass Halophila johnsonii grows intertidally to 3 m deep in river-influenced and marine-influenced habitats. In this study, environmental parameters and photosynthetic characteristics of H. johnsonii were measured hourly for populations from adjacent riverine and marine habitats under opposite tidal regimes (high tide at midday, low tide at midday). The two populations exhibited habitat-specific diurnal responses, which indicate long-term acclimatization to their different environments. During periods with similar bottom irradiances, effective photochemical efficiencies and chlorophyll concentrations were comparatively greater in the riverine population, indicative of low-light acclimation. In addition, ultraviolet pigment absorbance (340–345 nm) was generally greater in the riverine plants and it generally increased following ebb tides and decreasing salinity, suggesting a stress response. Multivariate analyses indicated that photosynthetic characteristics were most dissimilar when environmental conditions were most dissimilar, i.e., riverine plants when low tide occurred at midday compared to marine plants when high tide occurred at midday. Salinity, photosynthetically active radiation, and optical water quality (K 0PAR, S CDOM, and a 412) were most correlated with variability in photosynthetic characteristics. As there is no significant genetic variation among populations of H. johnsonii, the photosynthetic characteristics of the riverine and marine populations we examined reflect acclimation to their respective habitats through a highly phenoplastic physiology.
- Beer, S., B. Vilenkin, A. Weil, A. Veste, L. Susel, and A. Eshel. 1998. Measuring photosynthetic rates in seagrasses by pulse amplitude modulated (PAM) fluorometry. Marine Ecology Progress Series 174: 293–300. CrossRef
- Benjamin, K.J., D.I. Walker, A.J. McComb, and J. Kuo. 1999. Structural response of marine and estuarine plants of Halophila ovalis (R. BR.) Hook. f. to long-term hyposalinity. Aquatic Botany 64: 1–17. CrossRef
- Campbell S., C. Miller, A. Steven, and A. Stephens. 2003. Photosynthetic responses of two temperate seagrasses across a water quality gradient using chlorophyll fluorescence. Journal of Experimental Marine Biology and Ecology 291: 57–78.
- Campbell, S.J., L.J. McKenzie, S.P. Kerville, and J.S. Bité. 2007. Patterns in tropical seagrass photosynthesis in relation to light, depth and habitat. Estuarine, Coastal and Shelf Science 73: 551–562.
- Clark, K.R., and R.N. Gorely. 2006. PRIMER v6: User manual/tutorial, 121. Plymouth: PRIMER-E Ltd.
- Czerny, A.B., and K.H. Dunton. 1995. The effects of in situ light reduction on the growth of two subtropical seagrasses, Thalassia testudinum and Halodule wrightii. Estuaries 18: 418–427. CrossRef
- Dawes, C.J., C.S. Lobban, and D.A. Tomasko. 1989. A comparison of the physiological ecology of the seagrasses Halophila decipiens Ostenfeld and Halophila johnsonii Eiseman from Florida. Aquatic Botany 33: 149–154. CrossRef
- Dawson, S.P., and W.C. Dennison. 1996. Effects of ultraviolet and photosynthetically active radiation on five seagrass species. Marine Biology 125: 629–638. CrossRef
- Dennison, W.C., and R.S. Alberte. 1986. Photoadaptation and growth of Zostera marina L. (eelgrass) transplants along a depth gradient. Journal of Experimental Marine Biology and Ecology 98: 265–282. CrossRef
- Durako, M.J., J.I. Kunzelman, W.J. Kenworthy, and K.K. Hammerstrom. 2003. Depth-related variability in the photobiology of two populations of Halophila johnsonii and Halophila decipiens. Marine Biology 142: 1219–1228.
- Eiseman, N.J., and C. McMillan. 1980. A new species of seagrass, Halophila johnsonii, from the Atlantic coast of Florida. Aquatic Botany 9: 15–19. CrossRef
- Federal Register. 1998. Endangered and threatened species: threatened status for Johnson’s seagrass. 63(177):49035–49041.
- Gallegos, C.L., and W.J. Kenworthy. 1996. Seagrass depth limits in the Indian River Lagoon (Florida, USA): Application of an optical water quality model. Estuarine, Coastal, and Shelf Science 42: 267–288. CrossRef
- Gavin, N.M., and M.J. Durako. 2011. Localization and antioxidant capacity of flavonoids from intertidal and subtidal Halophila johnsonii and Halophila decipiens. Aquatic Botany 95: 242–247. CrossRef
- Genty, B., J.M. Briantais, and N.R. Baker. 1989. The relationship between the quantum yield of photosynthetic electron transport and quenching of chlorophyll fluorescence. Biochemica and Biophysica Acta 990: 87–92. CrossRef
- Gould, K.S., D.N. Kuhn, D.W. Lee, and S.F. Oberbauer. 1995. Why leaves are sometimes red. Nature 378: 241–242. CrossRef
- Gould, K.S., K.R. Markham, R.H. Smith, and J.J. Goris. 2000. Functional role of anthocyanins in the leaves of Quintinia serrata A. Cunn. Journal of Experimental Botany 51: 1107–1115. CrossRef
- Hall, L.M., M.D. Hanisak, and R.W. Virnstein. 2006. Fragments of the seagrasses Halodule wrightii and Halophila johnsonii as potential recruits in Indian River Lagoon, Florida. Marine Ecology Progress Series 310: 109–117. CrossRef
- Harborne, J.B., and C.A. Williams. 2000. Advances in flavonoid research since 1992. Phytochemistry 55: 481–504. CrossRef
- Hillman, K., A.J. McComb, and D.I. Walker. 1995. The distribution, biomass and primary productivity of the seagrass Halophila ovalis in the Swan/Canning Estuary, Western Australia. Aquatic Botany 51: 1–54. CrossRef
- Jeffrey, S.W., and G.F. Humphrey. 1975. New spectrophotometric equations for determining chlorophylls a, b, c 1, and c 2 in higher plants, algae, and natural phytoplankton. Biochemie Physiologie Pflanz 167: 191–194.
- Kahn, A.E. 2008. Physiological ecology of the seagrass Halophila johnsonii Eiseman in marine and riverine influenced environments. Ph.D. Dissertation, UNCW Library Archive. http://dl.uncw.edu/etd/2008-3/r1/kahna/amandakahn.pdf.
- Kahn, A.E., and M.J. Durako. 2009a. Wavelength-specific photosynthetic responses of Halophila johnsonii from marine versus river influenced habitats. Aquatic Botany 91: 245–249. CrossRef
- Kahn, A.E., and M.J. Durako. 2009b. Photosynthetic tolerances to desiccation of the co-occurring seagrasses Halophila johnsonii and Halophila decipiens. Aquatic Botany 90: 195–198. CrossRef
- Kahn, A.E., and M.J. Durako. 2008. Photophysiological responses of Halophila johnsonii to experimental hyposaline and hyper-CDOM conditions. Journal of Experimental Marine Biology and Ecology 367: 230–235. CrossRef
- Kenworthy, W.J. 1992. The distribution, abundance and ecology of Halophila johnsonii Eiseman in the lower Indian River, Florida. Final Report to the Office of Protected Resources, National Marine Fisheries Services, Silver Spring, 80 pp.
- 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. NOAA Technical Memorandum NMFS-SEFC-250, Washington, DC.
- Kieber, R.J., X. Zhou, and K. Mopper. 1990. Formation of carbonyl compounds from UV-induced photodamage of humic substances in natural water: Fate of riverine carbon in the sea. Limnology and Oceanography 35: 1503–1515. CrossRef
- Kirk, J.T. 1994. Light and photosynthesis in aquatic ecosystems, 2nd ed, 22. Cambridge: Cambridge University Press. CrossRef
- Kunzelman, J.I., M.J. Durako, W.J. Kenworthy, A. Stapleton, and J.L.C. Wright. 2005. Irradiance-induced changes in the photobiology of Halophila johnsonii. Marine Biology 148: 241–250. CrossRef
- Melton, R.S. 2004. Assessment of genetic variation in the threatened seagrass Halophila johnsonii using amplified fragment length polymorphism (AFLP). An honor’s thesis for the University of North Carolina Wilmington.
- Meng, Y., A.J. Krzysiak, M.J. Durako, J.I. Kunzelman, and J.L.C. Wright. 2008. Flavones and flavone glycosides from sea grass Halophila johnsonii. Phytochemistry 69: 2603–2608. CrossRef
- Ralph, P.J. 1999. Photosynthetic response of Halophila ovalis (R. Br.) Hook. f. to combined environmental stress. Aquatic Botany 65: 83–96. CrossRef
- Tattini, M., C. Galardi, P. Pinelli, R. Massai, D. Remorini, and G. Agati. 2004. Differential accumulation of flavonoids and hydroxycinnamates in leaves of Ligustrum vulgare under excess light and drought stress. New Phytology 163: 547–561. CrossRef
- Tomasko, D.A. 1992. Variation in growth form of shoal grass (Halodule wrightii) due to changes in the spectral composition of light below a canopy of turtle grass (Thalassia testudinum). Estuaries 15: 214–217. CrossRef
- Torquemada, Y.F., M.J. Durako, and J.L.S. Lizaso. 2005. Effects of salinity and possible interactions with temperature and pH on growth and photosynthesis of Halophila johnsonii Eiseman. Marine Biology 148: 251–260. CrossRef
- Virnstein, R.W., and L.J. Morris. 2007. Distribution and abundance of Halophila johnsonii in the Indian River Lagoon: An update. Technical Memorandum No. 51, St. Johns River Water Management District, Palatka, 16 pp.
- Yamasaki, H., Y. Sakihama, and N. Ikehara. 1997. Flavonoid-peroxidase reaction as a detoxification mechanism of plant cells against H2O2. Plant Physiology 115: 1405–1412.
- York, R.A., M.J. Durako, W.J. Kenworthy, and D.W. Freshwater. 2008. Megagametogenesis in Halophila johnsonii, a threatened seagrass with no known seeds, and the seed-producing Halophila decipiens (Hydrocharitaceae). Aquatic Botany 88: 277–282. CrossRef
- Zanardi-Lamardo, E., C.A. Moore, and R.D. Zika. 2004. Seasonal variations in molecular mass and optical properties of chromophoric dissolved organic material in coastal waters of southwest Florida. Marine Chemistry 89: 37–54. CrossRef
- Diurnal and Tidal Variability in the Photobiology of the Seagrass Halophila johnsonii in a Riverine Versus Marine Habitat
Estuaries and Coasts
Volume 36, Issue 2 , pp 430-443
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- Halophila johnsonii
- Physiological plasticity
- Author Affiliations
- 1. Department of Biology and Marine Biology, University of North Carolina Wilmington, 601 South College Road, Wilmington, NC, 28403, USA
- 2. Florida Fish and Wildlife Conservation Commission, FAU HBOI, 5600 US1, Ft. Pierce, FL, 34946, USA