Scientia Marina, Vol 77, No S1 (2013)

Spatio-temporal variability of inorganic and organic nutrients in five Galician rias (NW Spain)


https://doi.org/10.3989/scimar.03726.27B

María Dolores Doval
Instituto Tecnológico para el Control del Medio Marino de Galicia (INTECMAR), Spain

Adela López
Instituto Tecnológico para el Control del Medio Marino de Galicia (INTECMAR), Spain

Milagros Madriñán
Instituto Tecnológico para el Control del Medio Marino de Galicia (INTECMAR), Spain

Abstract


The spatial variability of inorganic (nitrate, nitrite, ammonium, phosphate and silicate) and organic (dissolved organic carbon) nutrients in five Galician rias (Vigo, Pontevedra, Arousa, Muros and Ares-Betanzos) was assessed by considering average values for the upwelling and downwelling periods. Inner stations were significantly different from middle and outer stations, especially during the downwelling period. Spatial differences between the five rías, tested by means of a multivariate analysis, were found in both periods. The behaviour of inorganic and organic nutrient variables was also significantly different between periods with and without shellfish harvesting closures due to the occurrence of toxic phytoplankton species.

Keywords


coastal upwelling; nutrient salts; dissolved organic carbon; ria; shellfish harvesting closures

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References


Álvarez-Salgado X.A., Labarta U., Fernández-Reiriz M.J., Figueiras F.G., Rosón G., Piedracoba S., Filgueira R., Cabanas J.M. 2008. Renewal time and the impact of harmful algal blooms on the extensive mussel raft culture of the Iberian coastal upwelling system (NE Europe). Harmful Algae 7: 849-855. http://dx.doi.org/10.1016/j.hal.2008.04.007

Álvarez-Salgado X.A., Gago J., Míguez B.M., Pérez F.F. 2001. Net ecosystem production of dissolved organic carbon in a coastal upwelling system: the Ría de Vigo, Iberian margin of the North Atlantic. Limnol. Oceanogr. 46: 135-147. http://dx.doi.org/10.4319/lo.2001.46.1.0135

Álvarez-Salgado X.A., Rosón G., Pérez F.F., Figueiras F.G., Ríos A.F. 1996. Nitrogen cycling in a estuarine upwelling system, the Ría de Arousa (NW Spain). II. Spatial differences in the short time scale evolution of fluxes and net budgets. Mar. Ecol. Prog. Ser. 135: 275-288. http://dx.doi.org/10.3354/meps135275

Álvarez-Salgado X.A., Gago J., Míguez B.M., Gilcoto M., Pérez F.F. 2000. Surface waters of the NW Iberian margin: Upwelling on the shelf versus outwelling of upwelled waters from the Rías Baixas. Estuar. Coastal Shelf Sci. 51: 821-837. http://dx.doi.org/10.1006/ecss.2000.0714

Anderson D.M., Glibert P.M., Burkholder J.M. 2002. Harmful algal blooms and eutrophication: Nutrient sources, composition and consequences. Estuaries 25: 704-726. http://dx.doi.org/10.1007/BF02804901

Anderson D.M., Pitcher G.C., Estrada M. 2005. The comparative "systems" approach to HAB research. Oceanography 18: 148-157. http://dx.doi.org/10.5670/oceanog.2005.50

Doval M.D., Álvarez-Salgado X.A., Pérez F.F. 1997. Dissolved organic matter in a temperate embayment affected by coastal upwelling. Mar. Ecol. Prog. Ser. 157: 21-37. http://dx.doi.org/10.3354/meps157021

Doval M.D., Nogueira E., Pérez F.F. 1998. Spatio-temporal variability of the thermohaline and biogeochemical properties and dissolved organic carbon in a coastal embayment affected by upwelling: the Ría de Vigo. J. Mar. Syst. 14: 135-150. http://dx.doi.org/10.1016/S0924-7963(97)80256-4

Doval M.D., Moroño A., Pazos Y. 2009. 2007 Galician oceanographic annual report. ISBN: 978-84-613-0956-6. INTECMAR (ed.) 431 pp.

Glibert P.M., Seitzinger S., Heil C.A., Burkholder J.M., Parrow M.W., Codispoti L.A., Kelly V. 2005. The role of eutrophication in the Global Proliferations of Harmful Algal Blooms. Oceanography 8: 198-209. http://dx.doi.org/10.5670/oceanog.2005.54

Granéli E., Carlsson P., Legrand C. 1999. The role of C, N, and P in dissolved and particulate organic matter as a nutrient source for phytoplankton growth, including toxic species. Aquatic Ecol. 33: 17-27. http://dx.doi.org/10.1023/A:1009925515059

Fraga F. 1967. Hidrografía de la Ría de Vigo con especial referencia a los compuestos de nitrógeno. Invest. Pesq. 31: 145-259.

Fraga F., Margalef R. 1979. Las Rías Gallegas. In: Universidad de Santiago de Compostela (ed.), Estudio y explotación del mar en Galicia. Santiago de Compostela, pp 101-121.

Hansen H.P., Grassoff K. 1983. Automated chemical analysis. In: K. Grasshoff, M. Ehrhardt and K. Kremling (eds). Methods of seawater analysis. Verlag Chemie, Weinheim, pp 347-395.

ICES WGHABD Report. 2005. ICES-IOC Working Group on Harmful Algal Bloom Dynamics Reports (WGHABD). April 2005, Norway 42 pp.

ICES WGHABD Report. 2006. ICES-IOC Working Group on Harmful Algal Bloom Dynamics Reports (WGHABD). April 2006, Poland 49 pp.

ICES WGHABD Report. 2007. ICES-IOC Working Group on Harmful Algal Bloom Dynamics Reports (WGHABD). April 2007, Latvia 49 pp.

ICES WGHABD Report. 2008. ICES-IOC Working Group on Harmful Algal Bloom Dynamics Reports (WGHABD). March 2008, Galway 49 pp.

Kudela R., Pitcher G., Probyn T., Figueiras F.G., Moita T., Trainer V. 2005. Harmful Algal Blooms in Coastal Upwelling Systems. Oceanography 8: 184-197. http://dx.doi.org/10.5670/oceanog.2005.53

Pazos Y., Moroño A., Doval M.D. 2008. 2006 Galician oceanographic annual report. ISBN: 978-84-612-9809-9. INTECMAR (ed.) 423 pp.

Prego R. 1993. Biogeochemical pathways of phosphate in a Galician ría (north-western Iberian Península). Estuar. Coastal Shelf Sci. 37: 437-451. http://dx.doi.org/10.1006/ecss.1993.1066

Prego R. 1994. Nitrogen interchanges generated by biogeochemical processes in a Galician ría. Mar. Chem. 45: 167-176. http://dx.doi.org/10.1016/0304-4203(94)90100-7

Prego R., Barciela M.C., Varela M. 1999. Nutrients dynamics in the Galician coastal area (Northwestern Iberian Península): Do the Rías Bajas receive more nutrients salts than the Rías Altas? Cont. Shelf Res. 19: 317-334. http://dx.doi.org/10.1016/S0278-4343(98)00099-5

Smayda T.J. 1990. Novel and nuisance phytoplankton blooms in the sea: Evidence for a global epidemic. In: Graneli E., Sundström B., Edler L., Anderson D.M. (eds), Toxic Marine Phytoplankton. Elsevier, New York, Usa, pp 29-40.

Souto C., Gilcoto M., Fariña-Busto L., Pérez F.F. 2003. Modeling the residual circulation of a coastal embayment affected by wind-driven upwelling: circulation of the Ría de Vigo (NW Spain). J. Geophys. Res. 108: 3340. http://dx.doi.org/10.1029/2002JC001512

Thompson M., Wood R. 1993. International Harmonized Protocol for Proficiency Testing of (Chemical) Analytical Laboratories. Journal of AOAC International 76 (4).

Wash JJ. 1991. Importance of continental margins in the marine biogeochemical cycling of carbon and nitrogen. Nature 350: 53-55. http://dx.doi.org/10.1038/350053a0

Wollast R. 1998.Evaluation and comparison of the global carbon cycle in the coastal zone and in the open ocean. In: Brink K.H., Robinson A.R. (eds), The Sea. John Wiley, Hoboken N.Y., pp 213-252.

Wooster W.S, Bakun A., McClain D.R. 1976. The seasonal upwelling cycle along the eastern boundary of the North Atlantic. J. Mar. Res. 34: 131-141.




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