Abstract
The stable nitrogen isotope ratios of some biota have been used as indicators of sources of anthropogenic nitrogen. In this study the relationships of the stable nitrogen isotope ratios of marsh plants, Iva frutescens (L.), Phragmites australis (Cav.) Trin ex Steud, Spartina patens (Ait.) Muhl, Spartina alterniflora Loisel, Ulva lactuca (L.), and Enteromorpha intestinalis (L.) with wastewater nitrogen and land development in New England are described. Five of the six plant species (all but U. lactuca) showed significant relationships of increasing δ 15N values with increasing wastewater nitrogen. There was a significant (P < 0.0001) downward shift in the δ 15N of S. patens (6.0 ± 0.48‰) which is mycorrhizal compared with S. alterniflora (8.5 ± 0.41‰). The downward shift in δ 15N may be caused by the assimilation of fixed nitrogen in the roots of S. patens. P. australis within sites had wide ranges of δ 15N values, evidently influenced by the type of shoreline development or buffer at the upland border. In residential areas, the presence of a vegetated buffer (n = 24 locations) significantly (P < 0.001) reduced the δ 15N (mean = 7.4 ± 0.43‰) of the P. australis compared to stands where there was no buffer (mean = 10.9 ± 1.0‰; n = 15). Among the plant species, I. frutescens located near the upland border showed the most significant (R 2 = 0.64; P = 0.006) inverse relationship with the percent agricultural land in the watershed. The δ 15N of P. australis and I. frustescens is apparently an indicator of local inputs near the upland border, while the δ 15N of Spartina relates with the integrated, watershed-sea nitrogen inputs.
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References
Aravena, R., Evans, L., & Cherry, J. A. (1993). Stable isotopes of oxygen and nitrogen in source identification of nitrate from septic systems. Ground Water, 31, 180–186.
Bertness, M. D. Ewanchuk, P., & Silliman, B. R. (2002). Anthropogenic modification of New England salt marsh landscapes. In Proceedings of the NationalAcademy of Sciences of the United States of America, 99, 1395–1398.
Burke, D. J. (2001). The interaction between the grass Spartina patens, N-fixing bacteria and vesicular arbuscular mycorrhizae in a northeastern salt marsh. PhD thesis, Rutgers University (New Brunswick, NJ, p.146)
Burke, D. J., Hamerlynck, E. P., & Hahn, D. (2002). Effect of arbuscular mycorrhizae on soil microbial populations and associated plant performance of the salt marsh grass Spartina patens. Plant and Soil, 239, 141–154.
Chambers, R. M., Meyerson, L. A., & Saltonstall, K. (1999). Expansion of Phragmites australis into tidal wetlands of North America. Aquatic Botany, 64, 261–273.
Cloern, J. E., Canuel, E. A., & Harris, D. (2002). Stable carbon and nitrogen isotope composition of aquatic and terrestrial plants of the San Francisco Bay estuarine system. Limnology and Oceanography, 47, 713–729.
Cole, M. L., Valiela, I., Kroeger, K. D., Fry, B., Tomasky, G. L., Cebrian, et al. (2004). Assessment of the isotopic method to indicate anthropogenic eutrophication in coastal lagoons. Journal of Environmental Quality, 33, 124–132.
Currin, C. A., Newell, S. Y., & Paerl, H. W. (1995). The role of standing dead Spartina alterniflora and benthic microalgae in salt marsh food webs; considerations based on multiple stable isotope analysis. Marine Ecology Progress Series, 121, 99–116.
Desbonnet, A., Lee, V., Pogue, P., Reis, S., Boyd, J., Willis, J., et al. (1995). Development of coastal vegetated buffer programs. Coastal Management, 23, 91–109.
Emery, N., Ewanshuk, P., & Bertness, M. D. (2001). Nutrients, mechanisms of competition and the zonation of plants across salt marsh landscapes. Ecology, 82, 2471–2485.
Gormly, J. R., & Spalding R. F. (1979). Sources and concentrations of nitrate nitrogen in groundwater of the central Platte region, Nebraska. Ground Water, 17, 291–301.
Kreitler, C. W., Ragone S., & Katz, B. G. (1978). 15N/14N ratios of ground water nitrate, Long Island, NY. Ground Water, 16, 404–409.
Lambert, A. M. (2005). Native and exotic Phragmites australis in Rhode Island: Distribution and differential resistance to insect herbivores. PhD dissertation, University of Rhode Island.
Levine, J., Brewer, S. J., & Bertness, M. D. (1998). Nutrient availability and the zonation of marsh plant communities. Journal of Ecology, 86, 285–292.
Mariotti, A. (1983). Atmospheric nitrogen is a reliable standard for natural 15N abundance measurements. Nature, 303, 685–687.
McClelland, J. W., & Valiela, I. (1998). Linking nitrogen in estuarine producers to land-derived sources. Limnology and Oceanography, 43, 577–585.
McClelland, J. W., Valiela, I., & Michener, R. H. (1997). Nitrogen-stable isotope signatures in estuarine food webs: A record of increasing urbanization in coastal watersheds. Limnology and Oceanography, 42, 930–937.
Meyerson, L. A., Saltonstall, K., Windham, L., Kiviat, E., & Findlay, S. (2000). A comparison of Phragmites australis in freshwater and brackish marsh environments in North America. Wetlands Ecology and Management, 8, 89–103.
Minchinton, T. E., & Bertness, M. D. (2003). Disturbance-mediated competition and the spread of Phragmites australis in a coastal marsh. Ecological Applications, 13, 1400–1416.
Pruell, R. J., Taplin, B. K., Lake, J. L., & Jayaraman, S. (2006). Nitrogen isotope ratios in estuarine biota collected along a nutrient gradient in Narragansett Bay, Rhode Island, USA. Marine Pollution Bulletin, 52, 612–620.
Saltonstall, K., Peterson, P. M., & Soreng, R. J. (2004). Recognition of Phragmites australis subsp. Americanus (Poaceae: Arundinoideae) in North America: Evidence from morphological and genetic analyses. SIDA, Contributions to Botany, 21, 683–692.
Silliman, B. R., & Bertness, M. D. (2004). Shoreline development drives invasion of Phragmites australis and the loss of plant diversity on New England salt marshes. Conservation Biology, 18, 1424–1434.
Valiela, I., Collins, G., Kremer, J., Lajtha, K., Geist, M., Seely, B., et al. (1997). Nitrogen loading from coastal watersheds to receiving estuaries: New method and application. Ecological Applications, 7, 358–380.
Valiela, I., Geist, M., McClelland, J., & Tomasky, G. (2000). Nitrogen loading from watersheds to estuaries: Verification of the Waquot Bay nitrogen loading model. Biogeochemistry, 49, 277–293.
Wigand, C., Comeleo, R., McKinney, R., Thursby, G., Chintala, M., & Charpentier, M. (2001). Outline of a new approach to evaluate ecological integrity of salt marshes. Human and Ecological Risk Assessment, 7, 1541–1554.
Wigand, C., McKinney, R., Chintala, M., Charpentier, M., & Thursby, G. (2003). Relationships of nitrogen loadings, residential development, and physical characteristics with plant structure in New England salt marshes. Estuaries, 26, 1494–1504.
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Wigand, C., McKinney, R.A., Cole, M.L. et al. Varying Stable Nitrogen Isotope Ratios of Different Coastal Marsh Plants and Their Relationships with Wastewater Nitrogen and Land Use in New England, USA. Environ Monit Assess 131, 71–81 (2007). https://doi.org/10.1007/s10661-006-9457-5
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DOI: https://doi.org/10.1007/s10661-006-9457-5