The bacterial diversity and community composition altered in the oxygen minimum zone of the Tropical Western Pacific Ocean

2021 ◽  
Author(s):  
Qiqi Sun ◽  
Jinming Song ◽  
Xuegang Li ◽  
Huamao Yuan ◽  
Qidong Wang
Keyword(s):  
Pacific Ocean ◽  
Bacterial Diversity ◽  
Community Composition ◽  
Oxygen Minimum Zone ◽  
Western Pacific ◽  
Western Pacific Ocean ◽  
Tropical Western Pacific ◽  
Minimum Zone ◽  
Oxygen Minimum

scholarly journals The OMZ and Its Influence on POC in the Tropical Western Pacific Ocean: Based on the Survey in March 2018

2021 ◽  
Vol 9 ◽  
Author(s):  
Jun Ma ◽  
Jinming Song ◽  
Xuegang Li ◽  
Qidong Wang ◽  
Guorong Zhong ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Water Column ◽  
Water Depth ◽  
Western Pacific ◽  
Western Pacific Ocean ◽  
Rapid Decomposition ◽  
Tropical Western Pacific ◽  
Water Columns ◽  
Minimum Zone ◽  
The Vertical Distribution

The hypoxia problem in the ocean is worsening, and the oxygen minimum zone (OMZ) continues to expand. The Tropical Western Pacific Ocean is one of the most sensitive areas in response to climate change and human activities, and the OMZ in this area has also expanded significantly. Based on a survey conducted in March 2018, the characteristics of OMZ in the Kocebu seamount area of the Tropical Western Pacific Ocean and its biogeochemical effects are discussed. The results showed that DO in the Kocebu seamount area first decreased and then increased, and the lowest value was 2.49 mg/L at a water depth of 750 m. Based on the oxycline and the threshold of 3.20 mg/L, OMZ in this area was located in the water column of 590–1,350 m. With the increase in water depth, the POC concentration decreased gradually and remained stable in the water column deeper than 1,000 m. The presence of OMZ reduced the decomposition rate of POC, causing more POC to sink into deeper waters. 38.77% of POC was decomposed in the water column of 150–300 m, whereas only 16.25% of POC was decomposed in the OMZ. In contrast to the vertical distribution of POC, δ13C-POC decreased rapidly in the water columns of 100–150 and 300–500 m, indicating the rapid decomposition of POC. This result suggests that POC and δ13C-POC should be combined in the evaluation of POC decomposition.

Vertical cloud properties in the tropical western Pacific Ocean: Validation of the CCSR/NIES/FRCGC GCM by shipborne radar and lidar

2008 ◽  
Vol 113 (D24) ◽  
Author(s):  
Hajime Okamoto ◽  
Tomoaki Nishizawa ◽  
Toshihiko Takemura ◽  
Kaori Sato ◽  
Hiroshi Kumagai ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Western Pacific ◽  
Western Pacific Ocean ◽  
Cloud Properties ◽  
Tropical Western Pacific

Bacterial vertical and horizontal variability around a deep seamount in the Tropical Western Pacific Ocean

2020 ◽  
Vol 158 ◽  
pp. 111419
Author(s):  
Qiqi Sun ◽  
Jinming Song ◽  
Xuegang Li ◽  
Huamao Yuan ◽  
Jun Ma ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Western Pacific ◽  
Western Pacific Ocean ◽  
Tropical Western Pacific

Poecilostomatoid Copepods associated with the Scleractinian coral Acropora in the tropical western Pacific Ocean

1993 ◽  
Vol 7 (4) ◽  
pp. 805 ◽  
Author(s):  
AG Humes
Keyword(s):  
Pacific Ocean ◽  
Scleractinian Coral ◽  
New Records ◽  
New Caledonia ◽  
Marshall Islands ◽  
Western Pacific ◽  
Western Pacific Ocean ◽  
New Genera ◽  
Tropical Western Pacific ◽  
Enewetak Atoll

Nine new lichomolgid copepods, including two new genera, Ecphysarion and Unicispina, are described, all associated with various species of the scleractinian genus Acropora in New Caledonia, at Ceram and Obi in the Moluccas, and at Enewetak Atoll in the Marshall Islands: Schedomolgus idanus, S. majusculus, S. insignellus, S. exiliculus, Scyphuliger eumorphus, S. aristoides, Ecphysarion ampullulum, E. spinulatum, and Unicispina latigenitalis. New records are given for Ecphysarion lobophomm (Humes & Ho, 1968), comb. nov., Scyphuliger concavipes Humes, 1991, S. manifestus Humes, 1991, and S. tenuatus (Humes, 1990).

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