Budget calculations of nitrogen, phosphorus and BOD5 passing through the Oder estuary

Grelowski, Alfred; Pastuszak, Marianna; Sitek, Stanisław; Witek, Zbigniew

doi:10.1016/s0924-7963(00)00017-8

Cited by 35 publications

(11 citation statements)

References 41 publications

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“…Generally, a nutrient transport outwelling pattern is observed in estuarine systems (Grelowski et al, 2000;Enqvist et al 1996;Rodriguez, 1999;Boynton et al 1995;Dame & Allen, 1996;Uncles et al, 1998b). The Santos Estuarine System follows this pattern as regards salt, DIN and ammonium during periods of high baroclinic influence, such as at the neap tides in dry as well as rainy seasons.…”

Section: Ebbmentioning

confidence: 91%

“…Many authors have, since then, focused on this theme, most of them dealing with temperate estuarine systems, thus contributing to the understanding of the carbon cycle and the eutrophication process in coastal areas. Knowledge regarding temperate estuaries has been greatly increased by the studies of Mitchell et al (1998), Uncles et al (1998a), Grelowski et al (2000), Jiang et al (2000) and Wu et al (2004).…”

Section: Introductionmentioning

confidence: 99%

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Instantaneous transport of salt, nutrients, suspended matter and chlorophyll-a in the tropical estuarine system of Santos

et al. 2005

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A B S T R A C TThe contribution of the polluted São Vicente and Santos estuarine channels to the eutrophication of Santos bay was assessed through the quantification of instantaneous transport of salt, dissolved inorganic nitrogen (DIN) and phosphate, organic and inorganic matter (OSM and ISM) and chlorophyll-a (Chl-a), during dry (austral winter-August/ 1999) and rainy (austral summerJanuary/2000) seasons. Samplings were carried out during spring and neap tides, in flood and ebb phases, in two transversal sections at the mouths of the São Vicente and Santos channels. Instantaneous transport values generally indicated importation of salt to the estuarine channels, exportation of DIN to the bay, mainly as N-NH 4 , at a maximum rate of 1155.1 g s -1 during the rainy season; importation of phosphate during the dry season (maximum of 385 g s -1 ) and exportation of ISM, OSM and Chl-a during periods of greater freshwater discharge. These results demonstrate the great contribution made by the Santos and São Vicente estuaries to the eutrophication of Santos bay, especially in the rainy season. R E S U M OA contribuição dos canais estuarinos de Santos e São Vicente para a eutrofização da baía de Santos foi avaliada quantificando-se o transporte instantâneo de sal, fosfato e nitrogênio inorgânico dissolvido (NID), material em suspensão orgânico (MSO) e inorgânico (MSI) e clorofila-a, durante a estação seca (inverno austral-Agosto/1999) e chuvosa (verão austral-Janeiro/ 2000). As amostragens foram realizadas em períodos de sizígia e quadratura, durante as marés enchentes e vazantes, nas secções transversais das bocas dos canais de São Vicente e Santos. Os valores de transporte instantâneo obtidos durante o período de amostragem indicaram exportação de NID, principalmente sobre a forma de N-NH 4 (valor máximo de 1155,1 g s -1 ) na estação chuvosa; importação de fosfato durante a estação seca (máximo de 385,6 g s -1 ) e exportação de MSI, MSO e clorofila-a em períodos de maior contribuição fluvial. Estes resultados indicam uma importante contribuição dos canais estuarinos de Santos e São Vicente para a eutrofização da baía de Santos, especialmente durante o período chuvoso.

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Section: Ebbmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Instantaneous transport of salt, nutrients, suspended matter and chlorophyll-a in the tropical estuarine system of Santos

et al. 2005

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“…Especially during summer, eutrophication effects, such as cyanobacteria blooms or fish kills due to hypoxia, can cause serious economic damage for tourism (Dolch andSchernewski 2003, Wasmund 2002). Because of the size of the Oder estuary system, its pollution level, and its economic and ecological importance, the Oder estuary system has been intensively investigated with respect to nutrient cycles, budgets, and retention capacity (Lampe 1999, Meyer and Lampe 1999, Grelowski et al 2000, Wielgat and Witek 2004, Pastuszak et al 2005. P load reductions are important for the Baltic Sea but have only limited effect on the eutrophic state of the lagoon.…”

Section: Introductionmentioning

confidence: 99%

Zebra Mussel Farming in the Szczecin (Oder) Lagoon: Water-Quality Objectives and Cost-Effectiveness

Schernewski¹,

Stybel²,

Neumann³

2012

E&S

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ABSTRACT. The Oder (Szczecin) Lagoon in the southern Baltic Sea is a heavily eutrophicated and degraded coastal ecosystem. We applied a systems approach framework to critically evaluate whether existing water-management measures achieve waterquality objectives for the river and lagoon systems. Our simulations reveal that the existing water-quality objectives for the river and the coastal waters are not sufficiently complementary. We suggest new water-quality threshold concentrations, which are in agreement with the European Water Framework Directive, and we calculate acceptable maximum nutrient loads for the Oder River. These calculations suggest that external nutrient-load reductions in the river basin alone seem insufficient to achieve good water quality in the lagoon. A comprehensive eutrophication management approach should also include internal nutrientretention and nutrient-removal measures in the lagoon. We focus on mussel farming, i.e., that of zebra mussels, Dreissena polymorpha, because they are efficient in removing nutrients and improving water transparency in the Oder Lagoon. For this purpose, the ecosystem model ERGOM is extended by a mussel module and an economic model. The economic model describes costs and benefits of mussel cultivation depending on the the farm size. We included additional potential sources of income such as water-quality tax or emission certificates. The simulations show that mussel farming in the lagoon is a suitable supportive measure and, at a load-reduction target of 50% or more, it is a cost-efficient measure for removing nutrients and for implementing the Baltic Sea Action Plan. In the Oder Lagoon, mussel farming could potentially remove nearly 1000 t of N (70 t of P)/year, or about 2% of the present N and P loads, and it would have the additional benefit of improving water transparency.

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“…Generally, independent research is to collect the primary dataset, but more dependent publications would consider multi-aquatic ecosystems and international collaborations. For example, total 24 articles referring to all the six aquatic ecosystems were found and most of them focused on eutrophication (Grelowski et al, 2000;Smith, 2003;Davis and Koop, 2006) and phytoplankton dynamics (Costa et al, 2009;Sin et al, 2013;Zhu et al, 2013) in different aquatic ecosystems. And the most number of countries, where authors belonging to, was from an article "Deep carbon export from a Southern Ocean ironfertilized diatom bloom" published in Nature reached 14 countries, which was funded internationally and carried out during RV Polarstern cruise ANT XXI/3 (Smetacek et al, 2012).…”

Section: Discussion Research Trend Based On Publicationsmentioning

confidence: 99%

A bibliometric analysis of scientific trends in phytoplankton research

Wang

Liu

et al. 2015

Ann. Limnol. - Int. J. Lim.

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-We summarize the scientific trends in phytoplankton studies between 1991 and 2013 based on bibliometric analysis. The annual publication output on phytoplankton demonstrated a rapid linear increasing tendency during the past two decades, and its contribution to total scientific articles remained below 10%. Under the context of fast scientific research development, the yearly numbers of dependent publications (in terms of multi-aquatic ecosystems and international collaborations) indicate a linear increasing trend. The variations of keywords associated with research regions are mainly contributed by geographic adjacent countries, which are also generally the top contributors. Various trends of all the keywords relating to research methods, research contents and environmental factors indicate that phytoplankton studies carried out on large scale and long term are showing a significantly ascending trend, while traditional and local scale studies are showing a descending trend.

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Budget calculations of nitrogen, phosphorus and BOD5 passing through the Oder estuary

Cited by 35 publications

References 41 publications

Instantaneous transport of salt, nutrients, suspended matter and chlorophyll-a in the tropical estuarine system of Santos

Instantaneous transport of salt, nutrients, suspended matter and chlorophyll-a in the tropical estuarine system of Santos

Zebra Mussel Farming in the Szczecin (Oder) Lagoon: Water-Quality Objectives and Cost-Effectiveness

A bibliometric analysis of scientific trends in phytoplankton research

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