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Environ Sci Pollut Res Int
2016 Jan 01;232:1300-11. doi: 10.1007/s11356-015-5363-0.
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The impact of mariculture on nutrient dynamics and identification of the nitrate sources in coastal waters.
Kang P
,
Xu S
.
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Reclamation along coastal zones is a method that has been used to relieve the problems of strained resources and land. Aquaculture, as one of the major man-made activities in reclamation areas, has an environmental impact on coastal waters. The effluents from aquaculture ponds are known to enrich the levels of nutrients such as nitrogen and phosphate. The goals of the present study are to evaluate the environmental impact of mariculture on coastal waters in the east coast of Laizhou Bay, China, and to identify the nitrate sources. Monitoring the concentrations of dissolved nitrogen and phosphate was used to assess their impact on the water quality of coastal waters. A dual isotope (δ(15)N-NO3(-) and δ(18)O-NO3(-)) approach was used to identify the nitrate sources. Higher dissolved nitrogen concentrations (NH4(+) and NO3(-)) than PO4(3-) concentrations associated with enriched δ(15)N-NO3(-) values were observed in the drainage channels, sea cucumber ponds, and groundwater, which indicated that aquaculture activity has more influence on nitrogen nutrients than on phosphate nutrients. In this coastal area with seawater intrusion, nitrogen released from sea cucumber ponds accumulated in nearshore water and migrated in the offshore direction in groundwater currents. This behavior results in nitrogen enrichment in groundwater within the hinterland. Isotopic data indicate that mixing of multiple nitrate sources exists in groundwater, and nitrogen from mariculture is the main source.
Barnes,
Land-use controls on sources and processing of nitrate in small watersheds: insights from dual isotopic analysis.
2010, Pubmed
Barnes,
Land-use controls on sources and processing of nitrate in small watersheds: insights from dual isotopic analysis.
2010,
Pubmed
Burford,
A synthesis of dominant ecological processes in intensive shrimp ponds and adjacent coastal environments in NE Australia.
2003,
Pubmed
Casciotti,
Measurement of the oxygen isotopic composition of nitrate in seawater and freshwater using the denitrifier method.
2002,
Pubmed
Costanzo,
Assessing the influence and distribution of shrimp pond effluent in a tidal mangrove creek in north-east Australia.
2004,
Pubmed
Costanzo,
A new approach for detecting and mapping sewage impacts.
2001,
Pubmed
Dierberg,
Issues, Impacts, and Implications of Shrimp Aquaculture in Thailand.
1996,
Pubmed
Hollocher,
Source of the oxygen atoms of nitrate in the oxidation of nitrite by Nitrobacter agilis and evidence against a P-O-N anhydride mechanism in oxidative phosphorylation.
1984,
Pubmed
Kaushal,
Tracking nonpoint source nitrogen pollution in human-impacted watersheds.
2011,
Pubmed
Liu,
Using 15N, 17O, and 18O to determine nitrate sources in the Yellow River, China.
2013,
Pubmed
Páez-Osuna,
The environmental impact of shrimp aquaculture: a global perspective.
2001,
Pubmed
Sigman,
A bacterial method for the nitrogen isotopic analysis of nitrate in seawater and freshwater.
2001,
Pubmed
Smith,
Influence of fresh water, nutrients and DOC in two submarine-groundwater-fed estuaries on the west of Ireland.
2012,
Pubmed
Suzuki,
Economic and geographic backgrounds of land reclamation in Japanese ports.
2003,
Pubmed
Thomas,
Spatial and temporal extension of eutrophication associated with shrimp farm wastewater discharges in the New Caledonia lagoon.
2010,
Pubmed
Wexler,
Isotopic signals of summer denitrification in a northern hardwood forested catchment.
2014,
Pubmed
Wexler,
Catchment-scale quantification of hyporheic denitrification using an isotopic and solute flux approach.
2011,
Pubmed
Widory,
Tracking the sources of nitrate in groundwater using coupled nitrogen and boron isotopes: a synthesis.
2005,
Pubmed
Xue,
Present limitations and future prospects of stable isotope methods for nitrate source identification in surface- and groundwater.
2009,
Pubmed
Zhao,
[Annual cycle and budgets of nutrients in the Bohai Sea].
2002,
Pubmed