Abstract
Seasonal measurements of plankton (phytoplankton and bacteria) biomass and abundance, primary production, and nutrient demand were conducted in the coastal waters of southwestern New Brunswick (SWNB) in 2000–2002 to investigate the far-field effects of finfish (salmon) aquaculture on the pelagic ecosystem. Plankton biomass and production varied seasonally with peak concentrations and activity in summer–fall and lows in winter. Nutrient demand followed a similar pattern with nitrogen (nitrate and ammonium) turnover times ranging from greater than a week in winter to less than a few days in summer. Ammonium concentrations were elevated at the aquaculture sites relative to control sites, however, effects on other nutrients, phytoplankton biomass, bacterial abundance, and primary production were not discernible despite the significant flux of nutrients into the system from finfish farming. Several lines of evidence point to the conclusion that primary production in SWNB is under light rather than nutrient control and that phytoplankton there have limited capacity to process additional nutrients produced as aquaculture in the region expands. The ratio of bacterial abundance to phytoplankton biomass (B/P ratio) is proposed as an easily measured water-quality indicator for assessing the trophic balance (autotrophy vs. heterotrophy) of the pelagic ecosystem in coastal waters.
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References
Fisheries and Oceans Canada (2003) Can Tech Rep Fish Aquat Sci 2489
Black KD (2001) Environmental Impacts of Aquaculture. CRC Press, Boca Raton, Florida
Fisheries and Oceans Canada (2003) Can Tech Rep Fish Aquat Sci 2450
Rosenthal H, Scarratt DJ, McInerney-Northcott M (1995) In: Boghen (ed) Cold-Water Aquaculture in Atlantic Canada, 2nd ed. Can Inst Res Reg Dev, Univ. Moncton. Tribune Press, Sackville, p 451
Nixon SW (1995) Ophelia 41:199
Rabalais NN, Nixon SW (2002) Estuaries 25:639
Smayda TJ (1989) In: Cosper EM, Bricelj VM, Carpenter EJ (eds) Novel Phytoplankton Blooms. Springer, Berlin Heidelberg New York, p 449
Cloern JE (2001) Mar Ecol Prog Ser 210:223
Kepkay PE, Harrison WG, Bugden JBC (2005) Ecosystem indicators of water quality part I. Oxygen product and oxygen demand (this volume)
Fisheries and Oceans Canada (2003) Can Tech Rep Fish Aquat Sci 2352
Fisheries and Oceans Canada (2003) Can Tech Rep Fish Aquat Sci 2411
Hecky RE, Kilham K (1988) Limnol Oceanogr 33:796
Howarth RW (1988) Ann Rev Ecol Syst 19:89
Trites R, Garrett C (1983) In: Thomas M (ed) Marine and coastal systems of the Quoddy Region. Can Spec Pub Fish Aq Sci 64:9
Greenberg DA, Shore JA, Page FH, Dowd M (2004) Ocean Modelling (In Press)
Strain PM, Hargrave BT (2005) Salmon aquaculture, nutrient fluxes and ecosystem processes in southwestern New Brunswick (this volume)
Li WKW, Martin JL, Ringuette MM (2002) In: Hargrave BT (ed) Environmental Studies for Sustainable Aquaculture (ESSA): 2002 Workshop Report. Can Tech Rep Fish Aquat Sci 2411:49
Therriault J-C, Petrie B, Pepin P, Gagnon J, Gregory D, Helbig J, Herman A, Lafaivre D, Mitchell M, Pelchat B, Runge J, Sameoto D (1998) Can Tech Rep Hydrogr Ocean Sci 194
Harrison G, Sameoto D, Spry J, Pauley K, Maass H, Soukhovtsev V (2002) Can Sci Advis Sec Res Doc 2002/056
Grasshoff K (1983) Methods of Seawater Analysis, 2nd Ed. Verlag Chemie, Weinheim, FRG
Holm-Hansen O, Lorenzen CJ, Holmes RW, Strickland JDH (1965) J Cons Perm Int Explor Mer 30:3
Sharp JH (1974) Limnol Oceanogr 19:984
Li WKW, Dickie PM (2001) Cytometry 44:236
Dugdale RC, Wilkerson FP (1986) Limnol Oceanogr 31:673
Redfield AC, Ketchum BH, Richards FA (1963) The influence of organisms on the composition of seawater. In: Hill MN (ed) The Sea, Vol. 2. Wiley Interscience, New York, p 26
Gowen RJ, Bradbury NB (1987) Oceanogr Mar Biol Ann Rev 25:563
Ackefors H, Enell M (1994) J Appl Ichthyol 10:225
Seitzinger SP, Kroeze C, Bouwman AF, Caraco N, Dentener F, Styles RV (2002) Estuaries 25:640
Strain PM, Wildish DJ, Yeats PA (1995) Mar Poll Bull 30:253
Page FH, Losier R, McCurdy P, Greenberg D, Chaffey J, Chang B (2005) Dissolved oxygen and salmon cage culture in the southwestern New Brunswick portion of the Bay of Fundy (this volume)
Wildish DJ, Keizer PD, Wilson AJ, Martin JL (1993) Can J Fish Aquat Sci 50:303
Sakami T, Abo K, Takayanagi K, Toda S (2003) Est Coast Shelf Sci 56:111
L'Helguen S, Madec C, Le Corre P (1996) Est Coast Shelf Sci 42:803
Fisheries and Oceans Canada (2003) Can Tech Rep Fish Aquat Sci 2356
Li WKW (2003) Bedford Basin plankton monitoring program. Workshop on Repairing Environmental Damage to the Halifax Harbour Watershed, Halifax Harbour Watershed Restoration Coalition, Dalhousie University, April 2003
Martin JL, LeGresley MM, Strain PM, Clement P (1999) Can Tech Rep Fish Aq Sci 2265
Martin JL, LeGresley MM, Strain PM (2001) Can Tech Rep Fish Aq Sci 2349
Jerlov NG (1976) Marine optics. Elsevier, Amsterdam
Platt T, Sathendranath S, Caverhill CM, Lewis MR (1988) Deep-Sea Res I 35:885
Monbet Y (1992) Estuaries 15:563
Cloern JE (1999) Aquat Ecol 33:3
Auffrey LM, Robinson SMC, Barbeau MA (2002) In: Hargrave BT (ed) Environmental Studies for Sustainable Aquaculture (ESSA): 2002 Workshop Report. Can Tech Rep Fish Aquat Sci 2411:84
Robinson SMC, Auffrey LM, Barbeau MA (2005) Far-field impacts of eutrophication on the intertidal zone in the Bay of Fundy with emphasis on the soft-shell clam, Mya arenaria (this volume) In: Hargrave BT (ed) Environmental Effects of Marine Finfish Aquaculture. The Handbook of Environmental Chemistry, Vol 5. Springer, Berlin Heidelberg New York
Li WKW, Head EJH, Harrison WG (2004) Deep-Sea Res (In Press)
Kirchman DL (2000) In: Kirchman DL (ed) Microbial Ecology of the Oceans. Wiley-Liss, New York, p 261
Silvert W, Sowles JW (1996) J Appl Ichthyol 12:75
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Harrison, W., Perry, T., Li, W. Ecosystem Indicators of Water Quality Part I. Plankton Biomass, Primary Production and Nutrient Demand . In: Hargrave, B.T. (eds) Environmental Effects of Marine Finfish Aquaculture. Handbook of Environmental Chemistry, vol 5M. Springer, Berlin, Heidelberg. https://doi.org/10.1007/b136004
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DOI: https://doi.org/10.1007/b136004
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