scholarly journals A 5-year study of the influence of the northeast and southwest monsoons on copepod assemblages in the boundary coastal waters between the East China Sea and the Taiwan Strait

2006 ◽  
Vol 28 (10) ◽  
pp. 943-958 ◽  
Author(s):  
Jiang-Shiou Hwang ◽  
Sami Souissi ◽  
LI-Chun Tseng ◽  
Laurent Seuront ◽  
François G. Schmitt ◽  
...  
Keyword(s):  
East China Sea ◽  
Coastal Waters ◽  
Taiwan Strait ◽  
East China ◽  
The East China Sea ◽  
China Sea ◽  
The Taiwan Strait

scholarly journals Water Exchange across Isobaths over the Continental Shelf of the East China Sea

2017 ◽  
Vol 47 (5) ◽  
pp. 1043-1060 ◽  
Author(s):  
Jing Zhang ◽  
Xinyu Guo ◽  
Liang Zhao ◽  
Yasumasa Miyazawa ◽  
Qun Sun
Keyword(s):  
Continental Shelf ◽  
East China Sea ◽  
Water Exchange ◽  
Bottom Layer ◽  
Taiwan Strait ◽  
East China ◽  
The East China Sea ◽  
China Sea ◽  
The Taiwan Strait ◽  
The Kuroshio

AbstractOnshore and offshore currents and the associated volume transport across three isobaths (50, 100, and 200 m) over the continental shelf of the East China Sea were examined using daily reanalysis data in 1993–2012. After being averaged along the isobaths, the velocities across 100 and 50 m are onshore in the bottom layer but offshore in the surface layer. In contrast, those across the 200-m isobath are onshore in the surface and bottom layers but without a clear direction in the midlayer, suggesting a three-layer structure. The surface offshore current across the 100-m isobath mainly arises from the Taiwan Strait Current, while the surface onshore current across the 200-m isobath mainly arises from the Kuroshio, both of which converge in the area between the 100- and 200-m isobaths and flow toward the Tsushima Strait. The control of bottom Ekman dynamics on the onshore bottom currents is important at the 100-m isobath, partly important at the 200-m isobath, and slightly important at the 50-m isobath. The seasonal variations of onshore and offshore currents in the surface layers across the three isobaths are likely caused by local winds, the Taiwan Strait Current, and the Changjiang discharge, while those in midlayer across the 200-m isobath demonstrate a strong geostrophic control and can be interpreted from a traditional viewpoint on the Kuroshio intrusion over the entire water column across the shelf slope. The close connection of bottom onshore currents across the three isobaths suggests that the bottom layer is an important pathway for water exchange of shelf water and the open sea.

Alkaline phosphatase activities and regulation in three harmful Prorocentrum species from the coastal waters of the East China Sea

2019 ◽  
Vol 79 (2) ◽  
pp. 459-471 ◽  
Author(s):  
Linjian Ou ◽  
Xianling Qin ◽  
Xiaoyong Shi ◽  
Qingliang Feng ◽  
Shuwen Zhang ◽  
...  
Keyword(s):  
Alkaline Phosphatase ◽  
East China Sea ◽  
Coastal Waters ◽  
East China ◽  
The East China Sea ◽  
Phosphatase Activities ◽  
China Sea

Secular Changes in the Tidal Amplitude and Influence of Sea-Level Rise in the East China Sea

2014 ◽  
Vol 9 (1) ◽  
pp. 48-54 ◽  
Author(s):  
Akira Tai ◽  
◽  
Kaori Tanaka ◽  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
East China Sea ◽  
Measurement Data ◽  
East China ◽  
Tidal Amplitude ◽  
The East China Sea ◽  
Secular Changes ◽  
China Sea ◽  
The Taiwan Strait

The characteristics of secular changes in M2tidal amplitude in the East China Sea and the effect of projected sea level rise on tide amplitude were studied. Based on measurement data analysis, it was clarified that rapid sea level rise and M2tidal amplitude decrease had been observed at observatories that face the East China Sea around 1998. The change in M2tidal amplitude of the East China Sea by sea level rise was then studied in numerical experiments. And results showed that tidal amplitude increased on the west coast of the Korean Peninsula and the Taiwan Strait. A similar study was conducted for the Yatsushiro Sea and the Ariake Sea, which showed the highest M2tidal amplitude in Japan. As a result, it was found that M2tidal amplitude increased in the whole bays, which was against resonance tide theory. It was shown that mean sea level rise and M2tidal amplitude increase and decrease affected by sea level rise must be considered when predicting the risk of seashore disaster by global warming.

Morphology and molecular analyses of a newClytiaspecies (Cnidaria: Hydrozoa: Campanulariidae) from the East China Sea

2014 ◽  
Vol 95 (2) ◽  
pp. 289-300 ◽  
Author(s):  
Jinru He ◽  
Lianming Zheng ◽  
Wenjing Zhang ◽  
Yuanshao Lin ◽  
Wenqing Cao
Keyword(s):  
New Species ◽  
East China Sea ◽  
Coastal Waters ◽  
Phylogenetic Analyses ◽  
Coi Gene ◽  
East China ◽  
The East China Sea ◽  
Separate Species ◽  
Molecular Analyses ◽  
China Sea

The near-cosmopolitan genusClytiais abundantly found in coastal waters, but difficulties of identification in this genus make nearly all species records of medusae suspect. Complex life histories, ambiguous taxonomic characters, and phenotypic plasticity pose serious problems for accurate species-level identifications and future revisions ofClytiaspecies. In the present study, morphological investigations and molecular analyses ofClytiaspecimens from the coastal waters of the East China Sea revealedClytia gulangensissp. nov. as a new species. DNA barcoding based on the mitochondrial cytochrome oxidase I (COI) gene supported the new species as a separate species withinClytia, and phylogenetic analyses based on mitochondrial 16S rDNA and nuclear 18S rDNA further confirmed this new species to be a distinct lineage. Moreover, detailed observation of medusae and polyps of this species showed sufficient morphological differences from otherClytiaspecies for a diagnosis. Our results indicated that life cycle and DNA-based studies should be a standard approach in future biodiversity investigations ofClytiaspecies.

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