Tappin, A. D. 2002. An examination of the fluxes of nitrogen and phosphorous in temperate and 
tropical estuaries: Current estimates and uncertainties. Estuarine, Coastal and Shelj Science 
55:885-901. 
Thayer G.W., D.A. Wolfe, and R.B. Williams. 1975. The impact of man on seagrass systems. 
American Scientist 63:288-296. 
The Research Group. 2005. Oregon marine recreational fisheries economic contributions in 2004. 
Prepared for Oregon Department of Fish and Wildlife and Oregon Coastal Zone Management 
Association. 
Thiel, M. and L. Watling. 1998. Effects of green algal mats on infaunal colonization of a New England 
mud flat - long-lasting but highly localized effects. Hvdrobiologia 375/376:177-189. 
Thom, R.M., L.D. Antrim, A.B. Borde, W.W. Gardiner, D.K. Shreffler, P.G. Farley, J.G. Norris, S. 
Wyllie Echeverria, and T.P. McKenzie. 1998. Puget Sound’s eelgrass meadows Factors 
contributing to depth distribution and spatial patchiness. Puget Sound Research ’98 
Proceedings. March 12-13, 1998 Seattle, WA. 
Thom, R.M., T.L. Parkwell, D.K. Niyogi, and D.K. Shreffler. 1994. Effects of graveling on the 
primary productivity, respiration and nutrient flux of two estuarine tidal flats. Marine Biology 
118:329-341. 
Thrush, S.F. 1986. The sublittoral macrobenthic community structure of an Irish sea-lough: effect of 
decomposing accumulations of seaweed. Journal of Experimental Marine Biology and Ecology 
96:199-212. 
Tjepkema, J.D., C.R. Schwintzer, R.H. Burris, G.V. Johnson, and W.B. Silvester. 2000. Natural 
abundance of 15 N in actinorhizal plants and nodules. Plant and Soil 219:285-289. 
Tubbs, C.R. 1977. Wildlife and waders in Langstone Harbour. British Birds 70:177-199. 
Tubbs, C.R. and J.M. Tubbs. 1980. Wader and Shelduck feeding distribution in Langstone Harbour, 
Hampshire. Bird Study 27:239-248. 
Tubbs, C.R. and J.M. Tubbs. 1983. Macroalgal mats in Langstone Harbour, Hampshire, England. 
Marine Pollution Bulletin 14:148-149. 
Underwood, G.J.C., and J. Kromkamp. 1999. Primary production by phytoplankton and 
microphytobenthos in estuaries. In: D.B. Nedwell and D.G. Raffaelli (eds.). Nutrients in 
estuaries . Academic Press, N.Y., pp. 93-153. 
U.S. Environmental Protection Agency. 2000. Ambient Water Quality Criteria Recommendations. 
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