Oxygen depletion off the Changjiang (Yangtze River) Estuary

Li, Daoji; Zhang, Jing; Huang, Daji; Wu, Ying; Liang, J.

doi:10.1360/02yd9110

Cited by 256 publications

(197 citation statements)

References 15 publications

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“…In the case of the Northern Gulf of Mexico, the load of dissolved nitrogen from the Mississippi River seems most important (Justic et al, 2003), which emphasizes that eutrophication and hypoxia can be related through the complex mechanisms driving cycling of nutrients and microbial processes in coastal environments. There are comparable examples in the discharges of the Changjiang (Yangtze River) into the East China Sea (Li et al, 2002).…”

Section: Understanding the Causes Of Coastal Hypoxiamentioning

confidence: 95%

“…Hypoxia that develops in coastal areas off the river mouths, notably the Mississippi River, Changjiang (Yangtze River), Pearl River (Zhujiang), Danube River, and Susquehanna River (Zaitsev, 1992;Turner and Rabalais, 1994;Li et al, 2002;Rabalais et al, 2002;Yin et al, 2004;Hagy et al, 2004;Black Sea Commission, 2008), usually has been related to anthropogenic activities in the catchment areas on land. In particular, changes in land-use and agriculture (e.g.…”

Section: Hypoxia Off River Mouths and In Estuariesmentioning

confidence: 99%

“…125-150 µM) (cf. Li et al, 2002;Zhang et al, 2007). Mesoscale intrusions of subsurface suboxic waters from the Rim Current of the Black Sea general circulation system also episodically modulate the near-bottom oxygen structure of northwestern shelf (Black Sea Commission, 2008).…”

Section: Hypoxia Off River Mouths and In Estuariesmentioning

confidence: 99%

“…Chesapeake Bay) (Kemp et al, 2005), and more recently off large rivers in East Asia (cf. Li et al, 2002). In view of the adverse effects of coastal hypoxia on marine life, the Scientific Committee on Oceanic Research (SCOR) constituted a Working Group (i.e.…”

Section: Introductionmentioning

confidence: 99%

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Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development

et al. 2010

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Abstract. Hypoxia has become a world-wide phenomenon in the global coastal ocean and causes a deterioration of the structure and function of ecosystems. Based on the collective contributions of members of SCOR Working Group #128, the present study provides an overview of the major aspects of coastal hypoxia in different biogeochemical provinces, including estuaries, coastal waters, upwelling areas, fjords and semi-enclosed basins, with various external forcings, ecosysCorrespondence to: J. Zhang (jzhang@sklec.ecnu.edu.cn) tem responses, feedbacks and potential impact on the sustainability of the fishery and economics. The obvious external forcings include freshwater runoff and other factors contributing to stratification, organic matter and nutrient loadings, as well as exchange between coastal and open ocean water masses. Their different interactions set up mechanisms that drive the system towards hypoxia. Coastal systems also vary in their relative susceptibility to hypoxia depending on their physical and geographic settings. It is understood that coastal hypoxia has a profound impact on the sustainability of ecosystems, which can be seen, for example, by the change in the food-web structure and system function; other Published by Copernicus Publications on behalf of the European Geosciences Union. 1444 J. Zhang et al.: Natural and human-induced hypoxia and consequences for coastal areas influences include compression and loss of habitat, as well as changes in organism life cycles and reproduction. In most cases, the ecosystem responds to the low dissolved oxygen in non-linear ways with pronounced feedbacks to other compartments of the Earth System, including those that affect human society. Our knowledge and previous experiences illustrate that there is a need to develop new observational tools and models to support integrated research of biogeochemical dynamics and ecosystem behavior that will improve confidence in remediation management strategies for coastal hypoxia.

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Section: Understanding the Causes Of Coastal Hypoxiamentioning

confidence: 95%

Section: Hypoxia Off River Mouths and In Estuariesmentioning

confidence: 99%

Section: Hypoxia Off River Mouths and In Estuariesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development

et al. 2010

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“…For example, the population living in the coastal regions of China increased to 529 million in 2000 from 243 million in 1952 (National Census Reports of China, 2000). In recent years, the warning signs of ecological deterioration, such as algal blooms, fishery collapse, hypoxia and now jellyfish blooms have increased significantly in Chinese seas (Li et al, 2002;Tang et al, 2003Tang et al, , 2006Liu et al, 2009;Zhang et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Jellyfish blooms in China: Dominant species, causes and consequences

Dong

Chen

Keesing

2010

Marine Pollution Bulletin

337

193

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Spring carbonate chemistry dynamics of surface waters in the northern East China Sea: Water mixing, biological uptake of CO₂, and chemical buffering capacity

et al. 2014

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We investigated sea surface total alkalinity (TAlk), dissolved inorganic carbon (DIC), dissolved oxygen (DO), and satellite-derived chlorophyll-a in the connection between the Yellow Sea and the East China Sea (ECS) during April to early May 2007. In spring, Changjiang dilution water (CDW), ECS offshore water, and together with Yellow Sea water (YSW) occupied the northern ECS. Using 16 day composite satellite-derived chlorophyll-a images, several algal blooms were identified in the CDW and ECS offshore water. Correspondingly, biological DIC drawdown of 73 6 20 lmol kg 21 , oversaturated DO of 10-110 lmol O 2 kg 21 , and low fugacity of CO 2 of 181-304 latm were revealed in these two waters. YSW also showed CO 2 uptake in spring, due to the very low temperature. However, its intrusion virtually counteracted CO 2 uptake in the northern ECS. In the CDW and the ECS offshore water, Revelle factor was 9.3-11.7 and 8.9-10.6, respectively, while relatively high Revelle factor values of 11.4-13.0 were revealed in YSW. In the ECS offshore water, the observed relationship between DIC drawdown and oversaturated DO departed from the Redfield ratio, indicating an effect of chemical buffering capacity on the carbonate system during air-sea reequilibration. Given the fact that the chemical buffering capacity slows down the air-sea reequilibration of CO 2 , the early spring DIC drawdown may have durative effects on the sea surface carbonate system until early summer. Although our study is subject to limited temporal and spatial coverage of sampling, these insights are fundamental to understanding sea surface carbonate chemistry dynamics in this important ocean margin.

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Oxygen depletion off the Changjiang (Yangtze River) Estuary

Cited by 256 publications

References 15 publications

Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development

Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development

Jellyfish blooms in China: Dominant species, causes and consequences

Spring carbonate chemistry dynamics of surface waters in the northern East China Sea: Water mixing, biological uptake of CO₂, and chemical buffering capacity

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Oxygen depletion off the Changjiang (Yangtze River) Estuary

Cited by 256 publications

References 15 publications

Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development

Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development

Jellyfish blooms in China: Dominant species, causes and consequences

Spring carbonate chemistry dynamics of surface waters in the northern East China Sea: Water mixing, biological uptake of CO2, and chemical buffering capacity

Contact Info

Product

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Spring carbonate chemistry dynamics of surface waters in the northern East China Sea: Water mixing, biological uptake of CO₂, and chemical buffering capacity