Abstract
We examined the importance of nitrogen inputs from groundwater and runoff in a small coastal marine cove on Cape Cod, MA, USA. We evaluated groundwater inputs by three different methods: a water budget, assuming discharge equals recharge; direct measurements of discharge using bell jars; and a budget of water and salt at the mouth of the Cove over several tidal cycles. The lowest estimates were obtained by using a water budget and the highest estimates were obtained using a budget of water and salt at the Cove mouth. Overall there was more than a five fold difference in the freshwater inputs calculated by using these methods.
Nitrogen in groundwater appears to be largely derived from on site septic systems. Average nitrate concentrations were highest in the region where building density was greatest. Nitrate in groundwater appeared to behave conservatively in sandy sediments where groundwater flow rates were high (> 11/m2/h), indicating that denitrification was not substantially reducing external nitrogen loading to the Cove.
Nitrogen inputs from groundwater were approximately 300 mmol-N/m3/y of Cove water. Road runoff contributed an additional 60 mmol/m3/y. Total nitrogen inputs from groundwater and road runoff to this cove were similar in magnitude to river dominated estuaries in urbanized areas in the United States.
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References
Afghan BK & Ryan JF (1975) A modified procedure for the determination of nitrate in sediments and some natural waters. Environ. Lett. 9: 59–73
Aubrey DG & Speer PE (1984) A study of nonlinear tidal propagation in shallow inlet/estuarine systems. Part I: observations. Est. Coast. Shelf. Sci. 21: 185–205
Belfit G (pers. comm.) Cape Cod Planning and Economic Development Commission. Nov. 1, 1983 memo to Arthur Gaines re: nitrogen loading to Town Cove
Bokuniewicz HJ & Zeitlin MJ (1980) Characteristics of the groundwater seepage into Great South Bay Special Report 35. SUNY: Marine Research Center, p 32
Bokuniewicz HJ (1980) Groundwater seepage into Great South Bay, New York. Estuar. Coast. Shelf. Sci. 10: 437–444
Boynton WR, Kemp WM & Keefe CW (1982) A comparative analysis of nutrients and other factors influencing estuarine phytoplankton production. In: Kennedy VS (Ed) Estuarine Comparisons (pp 69–90). New York: Academic Press
CCPEDC (1978) Cape Cod Planning and Economic Development Commission. Draft EIS and proposed 208 water quality management plan for Cape Cod. 1st District Court House, Barnstable, Massachusetts. ca 500 pp
Capone DG & Bautista MF (1985) A groundwater source of nitrate in nearshore marine sediments. Nature 313: 214–216
D'Elia CF, Webb KL & Porter JW (1981) Nitrate rich groundwater inputs to Discovery Bay, Jamaica: a significant source of N to local coral reefs? Bull. Mar. Sci 3: 903–910
EPA (1980) On site wastewater treatment and disposal: design manual. US EPA Office of Water Program Operations EPA 25/1-80-012, 391 pp
Flipse WJ, Katz BG, Lindner JB & Markel R (1984) Sources of nitrate in groundwater in a sewered housing development, central Long Island, New York. Ground Water 22: 418–426
Guswa JH & LeBlanc DR (1981) Digital models of groundwater flow in the Cape Cod aquifer system, Massachusetts. Water Resources: US Geological Survey, p 129
Howarth RW (1988) Nutrient limitation of net primary production in marine ecosystems. Ann. Rev. of Ecology and Systematics 19: 89–110
Hubbert MK (1940) The theory of groundwater motion. J. Geol. 48: 785–944
Johannes RE (1980) The ecological significance of the submarine discharge of groundwater. Marine Ecology Progress Series 3: 365–373
Lee DR (1976) A device for measuring seepage flux in lakes and estuaries. Limnol. & Oceanogr. 22: 140–147
McBride MS & Pfannkuch HO (1975) The distribution of seepage within lakes. J. of Res. of the U.S. Geological Survey 3 no. 5: 505–512
NADP (1982–1983) National Atmospheric Deposition Program. Truro station National Weather Service (1982–1983). WS Form E-15 data sheets for WSMO Chatham, Chatham, Mass
Nixon SW & Pilson MEQ (1983) Nitrogen in estuarine and coastal marine ecosystems. In: Carpenter EJ & Capone DG (Eds) Nitrogen in the Marine Environment (pp 565–648) New York: Academic Press
Persky JH (1986) The relation of ground-water quality to housing density, Cape Cod, Massachusetts. In: Water-Resources Investigation Report. Boston, MA: US Geological Survey, p22
Sewell PL (1982) Urban groundwater as a possible nutrient source for an estuarine benthic algal bloom. Estuar. Coastal Shelf. Sci. 15: 569–576
Shaw RD & Prepas EE (1989) Anomalous, short-term influx of water into seepage meters. Limnol. Oceanogr. 34: 1343–1351
Slater JM & Capone DG (1987) Denitrification in aquifer soil and nearshore marine sediments influenced by groundwater nitrate. Appl. & Env. Micro. 53: 1292–1297
Solorzano L (1969) Determination of ammonia in natural waters by the phenolhypochlorite method. Limnology & Oceanography 14: 799–800
Strahler AN (1966) A Geologist's View of Cape Cod. Garden City, NY: Natural History Press, p 115
Strickland JDH & Parsons TR (1972) A practical handbook of seawater analysis. Ottawa: Fish. Res. Bd. Canada, Bull No. 167, p 310
Trudell MR, Gillham RW & Cherry JA (1986) An in-situ study of the occurrence and rate of denitrification in a shallow unconfined sand aquifer. J. Hydrology 83: 251–268
US Department of Interior (1974) Water Measurement Manual, 2nd edition. Revised reprint. US Govt. printing Office, Denver, CO, 327 pp
Valiela I & Costa JE (1988) Eutrophication of Buttermilk Bay, a Cape Cod coastal embayment: Concentrations of nutrients and watershed nutrient budgets. Environmental Management 12: 539–551
Welsh BL, Whitlatch RB & Bohlen WF (1982) Relationship between physical characteristics and organic carbon sources as a basis for comparing estuaries in southern New England. In: Kennedy VS (Ed) Estuarine Comparisons (pp53–). New York: Academic Press
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Giblin, A.E., Gaines, A.G. Nitrogen inputs to a marine embayment: the importance of groundwater. Biogeochemistry 10, 309–328 (1990). https://doi.org/10.1007/BF00003150
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DOI: https://doi.org/10.1007/BF00003150