4.7 Article

Changjiang and Kuroshio contributions to oxygen depletion on the Zhejiang Coast

Related references

Note: Only part of the references are listed.
Review Oceanography

Cross-shelf exchange associated with a shelf-water streamer at the Mid-Atlantic Bight shelf edge

Weifeng (Gordon) Zhang et al.

Summary: This study investigates the significant exchanges between the Mid-Atlantic Bight continental shelf and the neighboring open ocean induced by shelf water streamers generated by Gulf Stream warm-core rings. The satellite-measured data and in situ measurements show the evolution and characteristics of the streamer, including its onshore transport of heat and salt and offshore transport of organic carbon and oxygen.

PROGRESS IN OCEANOGRAPHY (2023)

Article Environmental Sciences

Subsurface oxygen minima regulated by remineralization and bottom flushing along 123°E in the inner East China Sea

Bin Wang et al.

Summary: Based on observation data in the summer of 2014, this study identifies hypoxia in both the bottom and mid-layers off the Changjiang Estuary. Subsurface oxygen minima (SOM) are found in the mid-layer, with lower dissolved oxygen than at the bottom. The study reveals that the subsurface oxygen minima are controlled by remineralization and bottom-flushing effects, with local consumption occurring near the pycnocline layer and oxygen-rich ambient water replenishing the bottom oxygen deficit from south to north.

FRONTIERS IN MARINE SCIENCE (2023)

Article Environmental Sciences

Observed evidence for the impact of coastal currents on the recurrent Noctiluca scintillans blooms in the northwest Indian Ocean coast

Twinkle Sathish et al.

Summary: The study analyzes the recurrent winter blooms of green Noctiluca scintillans in the South Eastern Arabian Sea (SEAS) over the past three consecutive years (2018-2021). The results show that the blooms are driven by coastal currents, which transport the bloom species from the east coast to the west coast of India. This study highlights the importance of oceanic currents in determining phytoplankton blooms in the coastal regions of the north Indian Ocean.

MARINE POLLUTION BULLETIN (2023)

Article Limnology

Effects of dissolved oxygen and nutrients from the Kuroshio on hypoxia off the Changjiang River estuary

Di Tian et al.

Summary: The study revealed that changes in dissolved oxygen (DO) concentration in the Kuroshio have significant impacts on hypoxia in the East China Sea (ECS), while nutrients also play a role in influencing hypoxia to a certain extent. On the other hand, the effect of silicate on hypoxia can be considered negligible.

JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2022)

Article Environmental Sciences

Effects of Algal Blooms on Phytoplankton Composition and Hypoxia in Coastal Waters of the Northern Yellow Sea, China

Xiaohong Sun et al.

Summary: Recent studies have shown that there are occurrences of summer hypoxia and harmful algal blooms in the nearshore of the northern Yellow Sea, with diatoms and dinoflagellates as the dominant groups. A diatom blooming event in March shifted to dinoflagellate dominance throughout the summer but changed back to diatom dominance in September. Hypoxic zones were observed in the bottom water in August, with a clear association with a diatom blooming event in March.

FRONTIERS IN MARINE SCIENCE (2022)

Article Engineering, Environmental

Unexpected high indirect impacts of riverine organic matter to coastal deoxygenation

Wenxia Zhang

Summary: Hypoxia is a major threat to marine ecosystems worldwide. River-delivered organic matter (ROM), a component of eutrophication, contributes to hypoxia formation both directly and indirectly. However, the indirect contribution has been underestimated and overlooked. Using the Changjiang River as a case study, this research found that ROM remineralization contributes 5.4% directly and 7.3% indirectly to total oxygen consumption in hypoxic zones. The indirect contribution persists in a large part of the northwest Pacific marginal seas.

WATER RESEARCH (2022)

Article Engineering, Environmental

Contiguous Low Oxygen Waters between the Continental Shelf Hypoxia Zone and Nearshore Coastal Waters of Louisiana, USA: Interpreting 30 Years of Profiling Data and Three-Dimensional Ecosystem Modeling

Brandon M. Jarvis et al.

Summary: The multidecadal expansion of hypoxia on the northern Gulf of Mexico continental shelf due to anthropogenic nutrient enrichment has caused water quality issues in nearshore coastal waters of Louisiana. Integration of a large hydrographic dataset and a hydrodynamic-biogeochemical model revealed the interconnections of low dissolved oxygen waters across the shelf to the nearshore waters of Louisiana, emphasizing the importance of basin-wide nutrient management strategies to improve coastal water quality in the region.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

Article Meteorology & Atmospheric Sciences

Response of bottom hypoxia off the Changjiang River Estuary to multiple factors: A numerical study

Wenxia Zhang et al.

Summary: The study found that the formation and maintenance of low oxygen offshore of the Changjiang River Estuary occur at high frequencies in certain regions known as bottom hypoxia hotspots, specifically the southern shallow bank and submarine canyon. The spatial extent of bottom hypoxia is significantly sensitive to riverine inputs, particularly changes in river discharge, which have a greater impact on hypoxia over the shallow bank than the submarine canyon. Increasing wind speed can reduce the spatial extent and total volume of bottom hypoxic water, while weakening Kuroshio intrusion can prolong the near-bottom water residence time and increase bottom hypoxia extent.

OCEAN MODELLING (2021)

Review Environmental Sciences

Advances on Coastal and Estuarine Circulations Around the Changjiang Estuary in the Recent Decades (2000-2020)

Zhiqiang Liu et al.

Summary: The circulation in the Changjiang Estuary and adjacent East China Sea and Yellow Sea coastal waters is influenced by a complex interplay of winds, tides, riverine discharge, and shelf currents, resulting in a dynamic and diverse marine environment. Seasonal discharge and winds in the Changjiang Estuary lead to the formation of a seasonal Changjiang River plume, which is impacted by various factors when exported offshore, showing notable seasonality and spatial irregularities. Tides and bathymetry irregularities play critical roles in determining cross-shelf exchanges of water mass and momentum, with a year-round upslope intrusion of shelf waters along the pathway of the ECS coastal current.

FRONTIERS IN MARINE SCIENCE (2021)

Article Environmental Sciences

Impact of upwelling on phytoplankton blooms and hypoxia along the Chinese coast in the East China Sea

Chung-Chi Chen et al.

Summary: This study evaluates the simultaneous occurrences of phytoplankton blooms, hypoxia, and upwelling along the Zhejiang coast in the East China Sea. Upwelling uplifted bottom water to bring phytoplankton blooms and hypoxia, increasing the threat to marine life. High concentrations of nitrate and phosphate in the hypoxic regions may enhance phytoplankton blooms and worsen hypoxia.

MARINE POLLUTION BULLETIN (2021)

Article Environmental Sciences

Impact of Submesoscale Vertical Advection on Primary Productivity in the Southern East China Sea

Qicheng Meng et al.

JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES (2020)

Article Environmental Sciences

Riverine and Oceanic Nutrients Govern Different Algal Bloom Domain Near the Changjiang Estuary in Summer

Lingjing Xu et al.

JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES (2020)

Review Geosciences, Multidisciplinary

Drivers and mechanisms of ocean deoxygenation

Andreas Oschlies et al.

NATURE GEOSCIENCE (2018)

Review Multidisciplinary Sciences

Declining oxygen in the global ocean and coastal waters

Denise Breitburg et al.

SCIENCE (2018)

Article Oceanography

Transient Hypoxia Extent Off Changjiang River Estuary due to Mobile Changjiang River Plume

Wenxia Zhang et al.

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS (2018)

Article Oceanography

Offshore detachment of the Changjiang River plume and its ecological impacts in summer

Qinsheng Wei et al.

JOURNAL OF OCEANOGRAPHY (2017)

Article Geosciences, Multidisciplinary

Upper ocean O2 trends: 1958-2015

Takamitsu Ito et al.

GEOPHYSICAL RESEARCH LETTERS (2017)

Article Geosciences, Multidisciplinary

Double SST fronts observed from MODIS data in the East China Sea off the Zhejiang-Fujian coast, China

Shuangyan He et al.

JOURNAL OF MARINE SYSTEMS (2016)

Article Multidisciplinary Sciences

Nutrient Loads Flowing into Coastal Waters from the Main Rivers of China (2006-2012)

Yindong Tong et al.

SCIENTIFIC REPORTS (2015)

Article Marine & Freshwater Biology

Looming hypoxia on outer shelves caused by reduced ventilation in the open oceans: Case study of the East China Sea

Hon-Kit Lui et al.

ESTUARINE COASTAL AND SHELF SCIENCE (2014)

Article Geosciences, Multidisciplinary

A model study of the response of hypoxia to upwelling-favorable wind on the northern Gulf of Mexico shelf

Yang Feng et al.

JOURNAL OF MARINE SYSTEMS (2014)

Review Environmental Sciences

Hypoxia in the changing marine environment

J. Zhang et al.

ENVIRONMENTAL RESEARCH LETTERS (2013)

Article Environmental Sciences

Annual cycle of hypoxia off the Changjiang (Yangtze River) Estuary

Baodong Wang et al.

MARINE ENVIRONMENTAL RESEARCH (2012)

Article Oceanography

Low oxygen and high inorganic carbon on the Vancouver Island Shelf

L. Bianucci et al.

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS (2011)

Article Chemistry, Multidisciplinary

Hypoxia off the Changjiang (Yangtze River) Estuary: Oxygen depletion and organic matter decomposition

Zhuo-Yi Zhu et al.

MARINE CHEMISTRY (2011)

Article Oceanography

Sea-surface temperature fronts in the Yellow and East China Seas from TRMM microwave imager data

Daji Huang et al.

DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2010)

Article Geosciences, Multidisciplinary

Chemical and physical fronts in the Bohai, Yellow and East China seas

Chen-Tung Arthur Chen

JOURNAL OF MARINE SYSTEMS (2009)

Article Environmental Sciences

Hydromorphological mechanisms leading to hypoxia off the Changjiang estuary

Baodong Wang

MARINE ENVIRONMENTAL RESEARCH (2009)

Review Ecology

Effects of natural and human-induced hypoxia on coastal benthos

L. A. Levin et al.

BIOGEOSCIENCES (2009)

Review Multidisciplinary Sciences

Spreading dead zones and consequences for marine ecosystems

Robert J. Diaz et al.

SCIENCE (2008)

Article Environmental Sciences

Hypoxia in the East China Sea: One of the largest coastal low-oxygen areas in the world

Chung-Chi Chen et al.

MARINE ENVIRONMENTAL RESEARCH (2007)

Article Geosciences, Multidisciplinary

Summer hypoxia adjacent to the Changjiang Estuary

Hao Wei et al.

JOURNAL OF MARINE SYSTEMS (2007)

Article Geosciences, Multidisciplinary

Tidally induced upwelling off Yangtze River estuary and in Zhejiang coastal waters in summer

Lv Xingang et al.

SCIENCE IN CHINA SERIES D-EARTH SCIENCES (2007)

Article Oceanography

Phytoplankton production during a summer coastal upwelling in the East China Sea

YLL Chen et al.

CONTINENTAL SHELF RESEARCH (2004)

Article Oceanography

Structure and eastward extension of the Changjiang River plume in the East China Sea

HJ Lie et al.

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS (2003)