scholarly journals Interdecadal change in the upper water column environment and spring diatom community structure in the Japan Sea: an early summer hypothesis

2002 ◽  
Vol 231 ◽  
pp. 23-35 ◽  
Author(s):  
S Chiba ◽  
T Saino
Keyword(s):  
Community Structure ◽  
Water Column ◽  
Japan Sea ◽  
Early Summer ◽  
Interdecadal Change ◽  
Diatom Community ◽  
The Japan Sea

scholarly journals Spatial variations in zooplankton community structure along the Japanese coastline in the Japan Sea: influence of the coastal current

Ocean Science ◽  
2018 ◽  
Vol 14 (3) ◽  
pp. 355-369 ◽  
Author(s):  
Taketoshi Kodama ◽  
Taku Wagawa ◽  
Naoki Iguchi ◽  
Yoshitake Takada ◽  
Takashi Takahashi ◽  
...  
Keyword(s):  
Community Structure ◽  
Zooplankton Community ◽  
Japan Sea ◽  
Spatial Variations ◽  
The West ◽  
Zooplankton Community Structure ◽  
Japanese Coast ◽  
Toyama Bay ◽  
The Japan Sea ◽  
Water Species

Abstract. This study evaluates spatial variations in zooplankton community structure and potential controlling factors along the Japanese coast under the influence of the coastal branch of the Tsushima Warm Current (CBTWC). Variations in the density of morphologically identified zooplankton in the surface layer in May were investigated for a 15-year period. The density of zooplankton (individuals per cubic meter) varied between sampling stations, but there was no consistent west–east trend. Instead, there were different zooplankton community structures in the west and east, with that in Toyama Bay particularly distinct: Corycaeus affinis and Calanus sinicus were dominant in the west and Oithona atlantica was dominant in Toyama Bay. Distance-based redundancy analysis (db-RDA) was used to characterize the variation in zooplankton community structure, and four axes (RD1–4) provided significant explanation. RD2–4 only explained < 4.8 % of variation in the zooplankton community and did not show significant spatial difference; however, RD1, which explained 89.9 % of variation, did vary spatially. Positive and negative species scores on RD1 represent warm- and cold-water species, respectively, and their variation was mainly explained by water column mean temperature, and it is considered to vary spatially with the CBTWC. The CBTWC intrusion to the cold Toyama Bay is weak and occasional due to the submarine canyon structure of the bay. Therefore, the varying bathymetric characteristics along the Japanese coast of the Japan Sea generate the spatial variation in zooplankton community structure, and dominance of warm-water species can be considered an indicator of the CBTWC.

Biomarker records of phytoplankton productivity and community structure changes in the Japan Sea over the last 166 kyr

2011 ◽  
Vol 30 (19-20) ◽  
pp. 2666-2675 ◽  
Author(s):  
Lei Xing ◽  
Rongping Zhang ◽  
Yanguang Liu ◽  
Xiaochen Zhao ◽  
Sumei Liu ◽  
...  
Keyword(s):  
Community Structure ◽  
Japan Sea ◽  
Phytoplankton Productivity ◽  
Structure Changes ◽  
The Japan Sea

scholarly journals Spatial variations in zooplankton community structure along the Japanese coastline in the Japan Sea: influence of the coastal current

2017 ◽  
Author(s):  
Taketoshi Kodama ◽  
Taku Wagawa ◽  
Naoki Iguchi ◽  
Yoshitake Takada ◽  
Takashi Takahashi ◽  
...  
Keyword(s):  
Community Structure ◽  
Zooplankton Community ◽  
Japan Sea ◽  
Spatial Variations ◽  
Coastal Current ◽  
The West ◽  
Zooplankton Community Structure ◽  
Japanese Coast ◽  
Toyama Bay ◽  
The Japan Sea

Abstract. This study evaluates spatial variations in zooplankton community structure and potential controlling factors along the Japanese coast under the influence of the coastal branch of the Tsushima Warm Current (CBTWC). Variations in the density of morphologically-identified zooplankton in the surface layer in May were investigated for a 15-year period. The density of zooplankton (individuals per cubic meter) varied between sampling stations, but there was no consistent west–east trend. Instead, there were different zooplankton community structures in the west and east, with that in Toyama Bay particularly distinct: Corycaeus affinis and Calanus sinicus were dominant in the west and Oithona atlantica was dominant in Toyama Bay. Distance-based redundancy analysis (db-RDA) was used to characterize the variation in zooplankton community structure, and four axes (RD1–4) provided significant explanation. RD2–4 only explained

scholarly journals Genome Sequence of Piezophilic Bacterium Desulfovibrio profundus Strain 500-1, Isolated from a Deep Sediment Layer in the Japan Sea

2017 ◽  
Vol 5 (44) ◽  
Author(s):  
Stéphanie Fouteau ◽  
Thomas Guerin ◽  
Ghislaine Magdelenat ◽  
Marie Roumagnac ◽  
Manon Bartoli ◽  
...  
Keyword(s):  
Water Column ◽  
Genome Sequence ◽  
Japan Sea ◽  
Sediment Layer ◽  
Circular Chromosome ◽  
Content Type ◽  
Deep Sediment ◽  
The Japan Sea

ABSTRACT Piezophilic Desulfovibrio profundus strain 500-1 was isolated in the Japan Sea from a sediment layer at 500-m depth under a water column of 1,000 m. Here, we report the genome sequence of this strain, which includes a 4,168,905-bp circular chromosome and two plasmids of 42,836 bp and 6,167 bp.

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