An estimation of nutrient fluxes via submarine groundwater discharge into the Sanggou Bay—A typical multi-species culture ecosystem in China

Wang, Xilong; Du, Jinzhou; Ji, Tao; Wen, Tao; Liu, Sumei; Zhang, Jing

doi:10.1016/j.marchem.2014.07.002

Cited by 62 publications

(25 citation statements)

References 46 publications

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“…These ratios deviated significantly from the Redfield ratio, indicating that aquaculture activities have significantly influenced nutrient cycling in the bay. Wang et al (2014) estimated that approximately 4.76 × 10 7 mol mo −1 of DIN and 5.58 × 10 6 mol mo −1 of PO 4 3− are input from fertilizer and feed, based on protein data of shellfish and kelp in the bay during summer being used to construct a mass balance. Based on their data, fertilizer and feed would be the major source of nutrients in the bay.…”

Section: Nutrient Fluxes From the Bay To The Yellow Seamentioning

confidence: 99%

Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China

Li¹,

Liu²,

Zhang³

et al. 2016

Aquacult. Environ. Interact.

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Field observations were made from 2012 to 2014 at an integrated multi-trophic aquaculture (IMTA) site in Sanggou Bay (SGB), China, to characterize the nutrients associated with aquaculture activities, and to assess the effects of aquaculture on nutrient cycles in the bay. Dissolved inorganic and organic nutrient levels were measured in rivers, groundwater, and SGB. Seasonal variations in nutrient concentrations were detected in the rivers, particularly enrichment of dissolved inorganic nitrogen (DIN) and silicate (DSi). Nutrient concentrations showed considerable seasonal variation, with higher and significantly different concentrations occurring in autumn than in the other seasons. The composition and distribution of nutrients were also affected by the species being cultured. Dissolved organic nitrogen and phosphorus (DON and DOP) accounted for 27 to 87% of total dissolved nitrogen and 34 to 81% of total dissolved phosphorus, respectively. Phosphorus may be a potentially limiting nutrient for phytoplankton growth in summer. Nutrient budgets were developed based on a simple steady-state box model. These showed that bivalve aquaculture was the major source of PO 4 3− (contributing 64% of total influx) and led to increased riverine fluxes of PO 4 3− . The results indicated that substantial quantities of nitrogen and DSi accumulated in sediments or were transformed into other forms (e.g. phytoplankton cell composition or particles). Large quantities of DIN and PO 4 3− were removed from the bay through harvesting of seaweeds and bivalves, which represented up to 64 and 81% of total outflux, respectively. The results show that aquaculture activities play the most important role in nutrient cycling in SGB.

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Section: Nutrient Fluxes From the Bay To The Yellow Seamentioning

confidence: 99%

Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China

Li¹,

Liu²,

Zhang³

et al. 2016

Aquacult. Environ. Interact.

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“…DISe was > 25 nmol l −1 in the sample from Stn GW-1, while it was < 6 nmol l −1 in samples from Stns GW-2 and GW-3 ( Table 2). The low concentrations of 226 Ra in sample GW-1 (Wang et al 2014) indicates the low activity of rock-water interactions. More over, the dissolved inorganic arsenic concentration was nearly 10 times higher in sample GW-1 than samples GW-2 and GW-3 (Li et al 2014).…”

Section: Groundwater Input Of Selenium To Sanggou Baymentioning

confidence: 95%

“…The submarine groundwater discharge into the bay during summer is (9.45 to 11.20) × 10 9 m 3 yr −1 , as determined by calculation based on the nonconservative inventory of 226 Ra and 228 Ra (Wang et al 2014). As submarine groundwater discharge includes recycled seawater (75 to 90%) as well as fresh groundwater (Moore 1996), the hypothesis of groundwater discharge over the whole bay-instead of just along the shoreline -overestimates the discharge volume.…”

Section: Inputs Of Selenium To Sanggou Baymentioning

confidence: 99%

Influence of mariculture on the distribution of dissolved inorganic selenium in Sanggou Bay, northern China

Chang¹,

Zhang²,

Qu³

et al. 2016

Aquacult. Environ. Interact.

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Selenium is known as a 'double-edged sword' element on account of its dual beneficial and toxic effects on organisms, depending on its concentration and chemical form. Dissolved inorganic selenium (DISe) concentration in the water column and selenium content in biological species were investigated in a typical aquacultural area in Sanggou Bay, China. In addition to sampling within Sanggou Bay, the main sources of DISe into Sanggou Bay were sampled to estimate selenium transport from different sources. Results showed that DISe and selenite [Se(IV)] concentrations averaged, respectively, 0.69 nmol l −1 and 0.28 nmol l −1

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“…In the last few decades, nutrients transporting from land to ocean have increased as a result of anthropogenic activities (Diaz and Rosenberg 1995;Soetaert and Middelburg 2006;Elsdon et al 2009;Ouyang 2012;Wang et al 2014;Gaume et al 2016). In coastal environments globally, this has triggered eutrophication and hypoxia (Rabalais and Turner 1996;Seitzinger et al 2010).…”

Section: Introductionmentioning

confidence: 99%

“…There are four different methods to quantify SGD Wang et al 2014): (1) groundwater flow 1 3 13 Page 2 of 11 models, (2) seepage meters, (3) natural tracers including nutrients, trace elements, radioisotopes, salinity and major ion chemistry and (4) water budget and Darcy law method. Groundwater modeling is applied in quantifying SGD by observation, measurements and mathematical methods (Cox et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Measurement of submarine groundwater discharge using diverse methods in Coleroon Estuary, Tamil Nadu, India

et al. 2018

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Submarine groundwater discharge (SGD) is described as submarine inflow of fresh and brackish groundwater from land into the sea. The release of sewages from point and non-point source pollutants from industries, agricultural and domestic activities gets discharged through groundwater to ocean creating natural disparity like decreasing flora fauna and phytoplankton blooms. Hence, to quantify fluxes of SGD in coastal regions is important. Quantification of SGD was attempted in Coleroon estuary, India, using three dissimilar methods like water budget, Darcy law and manual seepage meter. Three seepage meters were installed at two prominent litho units (alluvium and fluvio marine) at a distance of (0-14.7 km) away from Bay of Bengal. The water budget and Darcy law-quantified submarine seepage at a rate of 6.9 × 10 6 and 3.2 × 10 3 to 308.3 × 10 3 m 3 year −1 , respectively, and the seepage meter quantified seepage rate of 0.7024 m h −1 at an average. Larger seepage variations were isolated from three different techniques and the seepage rates were found to be influenced by hydrogeological characteristics of the litho units and distance from the coast.

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An estimation of nutrient fluxes via submarine groundwater discharge into the Sanggou Bay—A typical multi-species culture ecosystem in China

Cited by 62 publications

References 46 publications

Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China

Sources and export of nutrients associated with integrated multi-trophic aquaculture in Sanggou Bay, China

Influence of mariculture on the distribution of dissolved inorganic selenium in Sanggou Bay, northern China

Measurement of submarine groundwater discharge using diverse methods in Coleroon Estuary, Tamil Nadu, India

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