NDLI: Long-term changes of dissolved oxygen, hypoxia, and the responses of the ecosystems in the East China Sea from 1975 to 1995

Please wait, while we are loading the content...

Temporal variability in physicochemical properties, phytoplankton standing crop and primary production for 7 years (2002–2008) in the neritic area of Sagami Bay, Japan

Coupled climate-society modeling of a realistic scenario to achieve a sustainable Earth

ENSO-induced interannual variability in the southeastern South China Sea

Algorithm for estimating sea surface temperatures based on Aqua/MODIS global ocean data. 1. Development and validation of the algorithm

Journal of Oceanography : Volume 66

Journal of Oceanography : Volume 65

Journal of Oceanography : Volume 64

Journal of Oceanography : Volume 63

Journal of Oceanography : Volume 62

Journal of Oceanography : Volume 61

Journal of Oceanography : Volume 60

Journal of Oceanography : Volume 59

Journal of Oceanography : Volume 58

Journal of Oceanography : Volume 57

Journal of Oceanography : Volume 56

Journal of Oceanography : Volume 55

Journal of Oceanography : Volume 54

Journal of Oceanography : Volume 53

Long-term changes of dissolved oxygen, hypoxia, and the responses of the ecosystems in the East China Sea from 1975 to 1995

Content Provider	Springer Nature Link
Author	Ning, X. Lin, C. Su, J. Liu, C. Hao, Q. Le, F.
Copyright Year	2011
Abstract	Observation data obtained in the 32°N transect (transect E) in 1975–1995 were used to analyze the long-term changes in dissolved oxygen (DO) concentration and near-bottom hypoxic water in the East China Sea (ECS). A declining trend in annual average DO concentration and the degree of DO saturation was observed. Consequently, the apparent oxygen utilization in the western waters of transect E was on the rise. There was a seasonal hypoxic phenomenon in near-bottom water in the western water of transect E. The width of hypoxic water formed in summer gradually extended eastward along the continental shelf (transect E) at the rate of 3.12 km year$^{−1}$. Three potential reasons might have caused the formation and maintenance of near-bottom hypoxic water. First, the special hydrological topography and hypoxic deep water of the Taiwan Warm Current provided a backdrop for the hypoxic zone. Second, in summer, the strength of water column stratification restricts water exchange. Third is the occurrence and decay of the phytoplankton bloom. In surface water, nutrient concentrations increased gradually, and chlorophyll (Chl a), primary production, and phytoplankton biomass in summer increased. On the other hand, the community structure of phytoplankton, zooplankton, and zoobenthos became simple. Blooming phytoplankton consumed plenty of nutrients in the surface, but the upwelling of nutritious bottom water was suppressed by the strong thermocline. As a result, sinking of phytoplankton was enhanced because of nutrient deficiency. In recent years, a serious lack of zoobenthos in the study area corresponded to a higher degree of hypoxia. This phenomenon would have a major effect on the evolution of ecological dynamic systems in the ECS.
Starting Page	59
Ending Page	75
Page Count	17
File Format	PDF
ISSN	09168370
Journal	Journal of Oceanography
Volume Number	67
Issue Number	1
e-ISSN	1573868X
Language	English
Publisher	Springer Japan
Publisher Date	2011-02-25
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Dissolved oxygen Hypoxia Long-term change Ecosystem responses Changjiang Estuary East China Sea Freshwater & Marine Ecology Oceanography
Content Type	Text
Resource Type	Article
Subject	Oceanography

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

The temporal-spatial distribution and changes of dissolved oxygen in the Changjiang Estuary and its adjacent waters for the last 50 a

Comparison of the effects of short-term UVB radiation exposure on phytoplankton photosynthesis in the temperate Changjiang and subtropical Zhujiang estuaries of China

Contrasting chemical and isotopic compositions of organic matter in Changjiang (Yangtze River) estuarine and East China Sea shelf sediments

Seasonal variations of particulate silicon in the Changjiang (Yangtze River) Estuary and its adjacent area

Long-term bottom water warming in the north Ross Sea

Nitrate δ $^{15}$N and δ $^{18}$O evidence for active biological transformation in the Changjiang Estuary and the adjacent East China Sea

Clarifying Water Column Respiration and Sedimentary Oxygen Respiration Under Oxygen Depletion Off the Changjiang Estuary and Adjacent East China Sea

Spatial distribution and deposition history of nonylphenol and bisphenol A in sediments from the Changjiang River (Yangtze River) Estuary and its adjacent East China Sea

Effect of regional warming on the abundance of Pseudeuphausia sinica Wang et Chen (Euphausiacea) off the Changjiang River (Yangtze River) Estuary

Long-term changes of dissolved oxygen, hypoxia, and the responses of the ecosystems in the East China Sea from 1975 to 1995

Similar Documents

The temporal-spatial distribution and changes of dissolved oxygen in the Changjiang Estuary and its adjacent waters for the last 50 a

Comparison of the effects of short-term UVB radiation exposure on phytoplankton photosynthesis in the temperate Changjiang and subtropical Zhujiang estuaries of China

Contrasting chemical and isotopic compositions of organic matter in Changjiang (Yangtze River) estuarine and East China Sea shelf sediments

Seasonal variations of particulate silicon in the Changjiang (Yangtze River) Estuary and its adjacent area

Long-term bottom water warming in the north Ross Sea

Nitrate δ $^{15}$N and δ $^{18}$O evidence for active biological transformation in the Changjiang Estuary and the adjacent East China Sea

Clarifying Water Column Respiration and Sedimentary Oxygen Respiration Under Oxygen Depletion Off the Changjiang Estuary and Adjacent East China Sea

Spatial distribution and deposition history of nonylphenol and bisphenol A in sediments from the Changjiang River (Yangtze River) Estuary and its adjacent East China Sea

Effect of regional warming on the abundance of Pseudeuphausia sinica Wang et Chen (Euphausiacea) off the Changjiang River (Yangtze River) Estuary

Long-term changes of dissolved oxygen, hypoxia, and the responses of the ecosystems in the East China Sea from 1975 to 1995