Climatic and anthropogenic factors driving water quality variability in a shallow coastal lagoon (Aveiro lagoon, Portugal): 1985–2010 data analysis

Marta Rodrigues; Henrique Queiroga; Anabela Oliveira; Vanda Brotas; Maria D. Manso; Marta Rodrigues; Henrique Queiroga; Anabela Oliveira; Vanda Brotas; Maria D. Manso

doi:10.3934/environsci.2016.4.673

AIMS Environmental Science

2016, Volume 3, Issue 4: 673-696. doi: 10.3934/environsci.2016.4.673

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Climatic and anthropogenic factors driving water quality variability in a shallow coastal lagoon (Aveiro lagoon, Portugal): 1985–2010 data analysis

1.
National Laboratory for Civil Engineering, Hydraulics and Environment Department, Estuaries and Coastal Zones Unit, Lisbon, Portugal
2.
University of Aveiro, CESAM & Biology Department, Aveiro, Portugal
3.
National Laboratory for Civil Engineering, Hydraulics and Environment Department, Information Technology in Water and Environment Group, Lisbon, Portugal
4.
University of Lisbon, Faculty of Sciences, MARE, Lisbon, Portugal
5.
University of Aveiro, Physics Department, Aveiro, Portugal

Received: 19 May 2016 Accepted: 17 October 2016 Published: 25 October 2016

Understanding the natural variability of coastal ecosystems, and in particular distinguishing between the natural fluctuations and the ones that are caused by anthropogenic interventions and long-term climatic variability, is a major concern for establishing adequate management and adaptation strategies. The Aveiro lagoon, a shallow coastal lagoon (Portugal), holds one of the largest saltmarshes and saltpans in Europe and is a very important ecosystem from both economic and ecological viewpoints, making the protection of its water masses a requirement. To better understand the variability of its ecosystem, the factors controlling seasonal, inter-annual and long-term variability of the water quality in the Aveiro lagoon were thus analyzed. The statistical analysis was based on a set of climatic, hydrological and water quality observations undertaken between 1985 and 2010. Seasonal variations were mostly related with the seasonal variation of the main climatic and hydrological drivers, while long-term shifts were typically driven by the anthropogenic interventions in the lagoon. After the adoption of secondary treatment for industrial effluents on 1992, a recovery from hypoxia conditions occurred in the upstream area of the lagoon. After 2000 lower concentrations of silicates occurred downstream, and may also derive from some anthropogenic modifications (e.g., shunting of river water to the sewage system, deepening of the inlet) that may have affected the physical dynamics. In the downstream area of the lagoon, chlorophyll a presented a downward trend between 1985 and 2010 and lower concentrations after 2000, which were probably associated with the lower concentrations of silicates. Results from the data analysis showed that the seasonal, inter-annual and long-term trends observed in the Aveiro lagoon depend on the influence of both anthropogenic and climate drivers, putting in evidence the need to combine these different drivers when evaluating and developing management strategies for estuarine ecosystems.
- Long-term variability,
- Chlorophyll a,
- dissolved oxygen,
- nutrients,
- estuaries
Citation: Marta Rodrigues, Henrique Queiroga, Anabela Oliveira, Vanda Brotas, Maria D. Manso. Climatic and anthropogenic factors driving water quality variability in a shallow coastal lagoon (Aveiro lagoon, Portugal): 1985–2010 data analysis[J]. AIMS Environmental Science, 2016, 3(4): 673-696. doi: 10.3934/environsci.2016.4.673

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Abstract

Understanding the natural variability of coastal ecosystems, and in particular distinguishing between the natural fluctuations and the ones that are caused by anthropogenic interventions and long-term climatic variability, is a major concern for establishing adequate management and adaptation strategies. The Aveiro lagoon, a shallow coastal lagoon (Portugal), holds one of the largest saltmarshes and saltpans in Europe and is a very important ecosystem from both economic and ecological viewpoints, making the protection of its water masses a requirement. To better understand the variability of its ecosystem, the factors controlling seasonal, inter-annual and long-term variability of the water quality in the Aveiro lagoon were thus analyzed. The statistical analysis was based on a set of climatic, hydrological and water quality observations undertaken between 1985 and 2010. Seasonal variations were mostly related with the seasonal variation of the main climatic and hydrological drivers, while long-term shifts were typically driven by the anthropogenic interventions in the lagoon. After the adoption of secondary treatment for industrial effluents on 1992, a recovery from hypoxia conditions occurred in the upstream area of the lagoon. After 2000 lower concentrations of silicates occurred downstream, and may also derive from some anthropogenic modifications (e.g., shunting of river water to the sewage system, deepening of the inlet) that may have affected the physical dynamics. In the downstream area of the lagoon, chlorophyll a presented a downward trend between 1985 and 2010 and lower concentrations after 2000, which were probably associated with the lower concentrations of silicates. Results from the data analysis showed that the seasonal, inter-annual and long-term trends observed in the Aveiro lagoon depend on the influence of both anthropogenic and climate drivers, putting in evidence the need to combine these different drivers when evaluating and developing management strategies for estuarine ecosystems.

References

[1]	Barbier EB, Hacker SD, Kennedy C, et al. (2011) The value of estuarine and coastal ecosystem services. Ecol Monogt 81: 169-193. doi: 10.1890/10-1510.1
[2]	Pickney JL, Paerl HW, Tester P, et al. (2001) The role of nutrient loading and eutrophication in estuarine ecology. Environ Health Persp 109: 699-706.
[3]	Cloern JE (2001) Our evolving conceptual model of the coastal eutrophication problem. Mar Ecol Prog Ser 210: 223-253. doi: 10.3354/meps210223
[4]	Paerl HW, Dyble J, Moisander PH, et al. (2003) Microbial indicators of aquatic ecosystem change: current applications to eutrophication studies. FEMS Microbiol Ecol 46: 233-246. doi: 10.1016/S0168-6496(03)00200-9
[5]	Burkholder JM, Tomasko DA, Touchette BW (2007) Seagrasses and eutrophication. J Exp Mar Biol Ecol 350: 46-72. doi: 10.1016/j.jembe.2007.06.024
[6]	Gameiro C, Cartaxana P, Brotas V (2007) Environmental drivers of phytoplankton distribution and composition in Tagus Estuary, Portugal. Estuar Coast Shelf S 75: 21-34. doi: 10.1016/j.ecss.2007.05.014
[7]	Yin K, Qian PY, Chen JC, et al. (2004) Dynamics of nutrients and phytoplankton biomass in the Pearl River estuary and adjacent waters of Hong Kong during summer: preliminary evidence for phosphorus and silicon limitation. Mar Ecol Prog Ser 194: 295-305.
[8]	Queiroga H, Almeida MJ, Alpuim T, et al. (2006) Wind and tide control of megalopal supply to estuarine crab populations on the Portuguese west coast. Mar Ecol Prog Ser 307: 21-36. doi: 10.3354/meps307021
[9]	Baumert HZ, Petzoldt T (2008) The role of temperature, cellular quota and nutrient concentrations for photosynthesis, growth and light–dark acclimation in phytoplankton. Limnologica 38: 313-326. doi: 10.1016/j.limno.2008.06.002
[10]	Statham PJ (2012) Nutrients in estuaries—An overview and the potential impacts of climate change. Sci Total Environ 434: 213-227.
[11]	Kotta I, Simm M, Põllupüü M (2009) Separate and interactive effects of eutrophication and climate variables on the ecosystems elements of the Gulf of Riga. Estuar Coast Shelf S 84: 509-518.
[12]	Scanes P, Coade G, Doherty M, et al. (2007) Evaluation of the utility of water quality based indicators of estuarine lagoon condition in NSW, Australia. Estuar Coast Shelf S 74: 306-319.
[13]	Gameiro C, Brotas V (2010) Patterns of phytoplankton variability in the Tagus Estuary. Estuar Coast 33: 311-323. doi: 10.1007/s12237-009-9194-4
[14]	Ferreira JG, Simas T, Nobre A, et al. (2003) Identification of sensitive areas and vulnerable zones in transitional and coastal portuguese systems, INAG, Lisbon, Portugal, 151 pp.
[15]	Lopes CB, Pereira ME, Vale C, et al. (2007) Assessment of spatial environmental quality status in Ria de Aveiro. Sci Mar 71: 293-304.
[16]	Rebelo JE (1992) The ichthyofauna and abiotic hydrological environment of the Ria de Aveiro, Portugal. Estuar Coast 15: 403-413. doi: 10.2307/1352787
[17]	Almeida MA, Cunha MA, Alcântara F (2005) Relationship of bacterioplankton production with primary production and respiration in a shallow estuarine system (Ria de Aveiro, NW Portugal). Microbiol Res 160: 315-328. doi: 10.1016/j.micres.2005.02.005
[18]	Resende P, Azeiteiro U, Pereira MJ (2005) Diatom ecological preferences in a shallow temperate estuary (Ria de Aveiro, Western Portugal). Hydrobiologia 544: 77-88. doi: 10.1007/s10750-004-8335-9
[19]	Lopes CB, Lillebø AI, Dias JM, et al. (2007) Nutrient dynamics and seasonal succession of phytoplankton assemblages in a Southern European Estuary: Ria de Aveiro, Portugal. Estuar Coast Shelf S 71: 480-490.
[20]	Sampaio L (2001) Processo sucessional de recolonização dos fundos dragados da Ria de Aveiro após o desassoreamento: comunidades macrobentónicas. MsC Thesis, University of Aveiro, 2001, Aveiro, Portugal, 87 pp.
[21]	Dias JM, Lopes JF (2006) Implementation and assessment of hydrodynamic, salt and heat transport models: the case of Ria de Aveiro Lagoon (Portugal). Environ Modell Softw 21: 1-15.
[22]	Dias JM, Lopes JF, Dekeyser I (2000) Tidal propagation in Ria de Aveiro Lagoon, Portugal. Phys Chem Earth Pt B 25: 369-374. doi: 10.1016/S1464-1909(00)00028-9
[23]	Moreira MH, Queiroga H, Machado MM, et al. (1993) Environmental gradients in a southern europe estuarine system: Ria de Aveiro, Portugal. Implications for soft bottom macrofauna colonization. Netherlands J Aquat Ecol 27: 465-482.
[24]	Palma C, Valença M, Silva PP, et al. (2000) Monitoring the quality of the marine environment. J Environ Monit 2: 512-516. doi: 10.1039/b002781m
[25]	Borges C, Valença M, Palma C, et al. (2011) Monitorização da qualidade ambiental das águas da Ria de Aveiro. In: Almeida A, Alves FL, Bernardes C, Dias JM, Gomes NCM, Pereira E, Queiroga H, Serôdio J, Vaz N (Eds.), Actas das Jornadas da Ria de Aveiro, 265-273.
[26]	McQuarters-Gollop A, Mee LD, Raitsos DE, et al. (2008) Non-linearities, regime shifts and recovery: the recent influence of climate on Black Sea chlorophyll. J Marine Syst 74: 649-658. doi: 10.1016/j.jmarsys.2008.06.002
[27]	Rodionov SN (2004) A sequential algorithm for testing climate regime shifts. Geophys Res Lett 31: 1-4.
[28]	Rodionov SN, Overland JE (2005) Application of a sequential regime shift detection method to the Bering Sea ecosystem. ICES J Mar Sci 62: 328-332. doi: 10.1016/j.icesjms.2005.01.013
[29]	Morrison DF (1976) Multivariate statistical methods. McGraw-Hill, NY, USA, 415 pp.
[30]	Beaugrand G, Reid PC, Ibañez F, et al. (2002) Reorganization of North Atlantic marine copepod biodiversity and climate. Science 296: 1692-1694. doi: 10.1126/science.1071329
[31]	Nezlin NP, Kamer K, Hyde J, et al. (2009) Dissolved oxygen dynamics in a eutrophic estuary, Upper Newport Bay, California. Estuar Coast Shelf S 82: 139-151.
[32]	Harding Jr LW (1994) Long-term trends in the distribution of phytoplankton in Chesapeake Bay: roles of light, nutrients and streamflow. Mar Ecol Prog Ser 104: 267-291. doi: 10.3354/meps104267
[33]	Cabeçadas G, Nogueira M, Brogueira MJ (1999) Nutrient dynamics and productivity in three European estuaries. Mar Pollut Bull 38: 1092-1096. doi: 10.1016/S0025-326X(99)00111-3
[34]	Barbosa AB, Domingues RB, Galvão HM (2010) Environmental forcing of phytoplankton in a Mediterranean Estuary (Guadiana Estuary, South-western Iberia): a decadal study of anthropogenic and climatic influences. Estuar Coast 33: 324-341. doi: 10.1007/s12237-009-9200-x
[35]	Caetano M, Raimundo J, Nogueira M, et al. (2016) Defining benchmark values for nutrients under the Water Framework Directive: Application in twelve Portuguese estuaries. Mar Chem 185: 27-37. doi: 10.1016/j.marchem.2016.05.002
[36]	Da Silva JF, Duck RW, Hopkins TS, et al., Evaluation of the nutrient inputs to a coastal lagoon: the case of the Ria de Aveiro, Portugal. Nutrients and Eutrophicatio in Estuaries and Coastal Waters. Springer Netherlands, 2002: 379-385.
[37]	Plano de Gestão das Bacias Hidrográficas dos rios Vouga, Mondego e Lis integrados na Região Hidrográfica 4 (2012) Parte 2—Caracterização Geral e Diagnóstico, Parte 2.2—Poluição difusa. Administração da Região Hidrográfica do Centro, IP: Ministério da Agricultura, Mar, Ambiente e Ordenamento de Território, 63 pp.
[38]	Clemêncio C, Viegas M, Nadai H (2014) Nitrogen and phosphorus discharge of animal origin in the Baixo Vouga: A spatial data analysis. Sci Total Environ 490: 1091-1098. doi: 10.1016/j.scitotenv.2014.05.016
[39]	Ramos M, Almeida M, Silva PA, et al. (2003) Modelling study of the dispersal of pollutants at São Jacinto submarine outfall (Aveiro, Portugal), In: Brebbia CA, Almorza D, Lopez-Aguayo F (Eds.), Coastal Engineering VI, WITPRESS, 133-141.
[40]	Sobrinho JL, Nutrient balance in the continental shelf along the Aveiro region. MsC Thesis Thesis, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal.
[41]	Ji ZG (2008) Hydrodynamics and water quality—Modeling rivers, lakes and estuaries. Wiley, USA, 2008.
[42]	Rocha C, Galvão H, Barbosa A (2002) Role of transient silicon limitation in the development of cyanobacteria blooms in the Guadiana estuary, south-western Iberia. Mar Ecol Prog Ser 228: 35-45. doi: 10.3354/meps228035
[43]	Li M, Xu K, Watanabe M, et al. (2007) Long-term variations in dissolved silicate, nitrogen, and phosphorus flux from the Yangtze River into the East China Sea and impacts on estuarine ecosystem. Estuar Coast Shelf S 71: 3-12.
[44]	Plano de Bacia Hidrográfica do Rio Vouga (1999) Plano de Bacia Hidrográfica do Rio Vouga. Anexo 10, Qualidade dos Meios Hídricos. Consórcio: Ambio, CHIRON, Agri.Pro, Drena, HCL, FBO Consultores, 160 pp.
[45]	Portucel Soporcel (2009) Monografia da fábrica de Cacia—2009. Portocel-Soporcel, 2009.
[46]	Silva A, Leitão P (2011) Simulação das condições hidromorfológicas da barra da Ria de Aveiro e respectivos impactes nos prismas de maré. In: Almeida A, Alves FL, Bernardes C, Dias JM, Gomes NCM, Pereira E, Queiroga H, Serôdio J, Vaz N (Eds.), Actas das Jornadas da Ria de Aveiro, 30-36.
[47]	Araújo IB, Dias JM, Pugh DT (2008) Model simulations of tidal changes in a coastal lagoon, the Ria de Aveiro (Portugal). Cont Shelf Res 28: 1010-1025. doi: 10.1016/j.csr.2008.02.001
[48]	Valiela I, Costa JE (1988) Eutrophication of Buttermilk Bay, a cape cod coastal embayment: Concentrations of nutrients and watershed nutrient budgets. EnvironManage 12: 539-553.
[49]	Ruiz A, Franco J, Villate F (1998) Microzooplankton grazing in the Estuary of Mundaka, Spain, and its impact on phytoplankton distribution along the salinity gradient. Aquat Microb Ecol 14: 281-288.
[50]	Pereira E, Lopes CB, Duarte AC (2011) Monitorização do estado trófico da Ria de Aveiro no intervalo temporal entre 2000 e 2004: implicações na evolução da qualidade da água. In: Almeida A, Alves FL, Bernardes C, Dias JM, Gomes NCM, Pereira E, Queiroga H, Serôdio J, Vaz N (Eds.), Actas das Jornadas da Ria de Aveiro, 258-264.
[51]	Ferreira JG, Wolff WJ, Simas TC, et al. (2005) Does biodiversity of estuarine phytoplankton depend on hydrology? Ecol Model 187: 513-523. doi: 10.1016/j.ecolmodel.2005.03.013
[52]	Padersen MF, Borum J (1996) Nutrient control of algal growth in estuarine waters. Nutrient limitation and the importance of nitrogen requirements and nitrogen storage among phytoplankton and species of macroalgae. Mar Ecol Prog Ser 142: 261-272.
[53]	Yin K, Qian PY, Chen JC, et al. (2000) Dynamics of nutrients and phytoplankton biomass in the Pearl River estuary and adjacent waters of Hong Kong during summer: preliminary evidence for phosphorus and silicon limitation. Mar Ecol Prog Ser 194: 295-305.
[54]	Dortch Q, Whitledge TE (1992) Does nitrogen or silicon limit phytoplankton production in the Mississippi River plume and nearby regions? Cont Shelf Res 12: 1293-1309. doi: 10.1016/0278-4343(92)90065-R
[55]	Fisher TR, Harding Jr. LW, Stanley DW, et al. (1988) Phytoplankton, nutrients, and turbidity in the Chesapeake, Delaware, and Hudson estuaries. Estuar Coast Shelf S 27: 61-93.
[56]	Alpine AE, Cloern JE (1988) Phytoplankton growth rates in a light-limited environment, San Francisco Bay. Mar Ecol-Prog Ser 44: 167-173.
[57]	Gameiro C, Zwolinski J, Brotas V (2011) Light control on phytoplankton production in a shallow and turbid estuarine system. Hydrobiologia 669: 249-263. doi: 10.1007/s10750-011-0695-3
[58]	Martins V, Jesus CC, Abrantes I, et al. (2009) Suspended particulate matter vs. bottom sediments in a mesotidal lagoon (Ria de Aveiro, Portugal). J Coastal Res 56: 1370-1374.

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