scholarly journals Natural gas pipeline between the Japan Sea and the Pacific Ocean connected with natural gas field and LNG receiving terminal in Japan

2008 ◽  
Vol 73 (2) ◽  
pp. 143-151
Author(s):  
Kazuo Yamamoto
Keyword(s):  
Pacific Ocean ◽  
Natural Gas ◽  
Japan Sea ◽  
Gas Pipeline ◽  
Gas Field ◽  
Natural Gas Pipeline ◽  
The Pacific ◽  
The Japan Sea ◽  
The Pacific Ocean

scholarly journals Evidence of clonal propagation in Cryptomeria japonica D. Don distributed on Pacific Ocean side in Japan

2017 ◽  
Vol 66 (1) ◽  
pp. 43-46 ◽  
Author(s):  
Güliz Doğan ◽  
Takumi Tadama ◽  
Hiroki Kohama ◽  
Asako Matsumoto ◽  
Yoshinari Moriguchi
Keyword(s):  
Pacific Ocean ◽  
Cryptomeria Japonica ◽  
Dna Analysis ◽  
Japan Sea ◽  
Regeneration System ◽  
The Pacific ◽  
Miyagi Prefecture ◽  
The Japan Sea ◽  
The Pacific Ocean ◽  
Strong Winds

Abstract Cryptomeria japonica is distributed on the Pacific Ocean side and reproduces only by seedling; however, C. japonica var. radicans is distributed on the Japan Sea side and reproduces by both seedling and layering. Until now, there has been no report that C. japonica on the Pacific Ocean side regenerates by layering. In this study, the regeneration system of C. japonica in a national forest of Miyagi Prefecture Ishinomaki City was investigated using DNA analysis. C. japonica growing in the study plot was divided into seven genets and 40 single ramets, clearly suggesting that C. japonica at this site regenerates not only by seedling, but also by layering. The strong winds and low temperature appear to be key factors in layering reproduction at this site.

scholarly journals Synchrony in the abundance trend of spear squid Loligo bleekeri in the Japan Sea and the Pacific Ocean with special reference to the latitudinal differences in response to the climate regime shift

2013 ◽  
Vol 70 (5) ◽  
pp. 968-979 ◽  
Author(s):  
Yongjun Tian ◽  
Kazuya Nashida ◽  
Hideo Sakaji
Keyword(s):  
Pacific Ocean ◽  
Environmental Factors ◽  
Regime Shift ◽  
Japan Sea ◽  
Climate Regime ◽  
Climate Regime Shift ◽  
The Pacific ◽  
The Japan Sea ◽  
Abundance Trends ◽  
The Pacific Ocean

Abstract Tian, Y., Nashida, K., and Sakaji, H. 2013. Synchrony in the abundance trend of spear squid Loligo bleekeri in the Japan Sea and the Pacific Ocean with special reference to the latitudinal differences in response to the climate regime shift. – ICES Journal of Marine Science, 70: 968–979. Spear squid Loligo bleekeri is widely distributed in the Japanese coastal waters. The fisheries depend largely on four stocks: the southern and northern stocks both in the Japan Sea and the coastal regions of the Pacific. The catch per unit effort (cpue) for the northern stock in the Japan Sea decreased substantially during the 1980s but increased during the 1990s, while the abundance index for the southern stock showed the opposite trend. The cpue for the southern and northern stocks in the Pacific coast showed a similar pattern to that in the Japan Sea. The synchrony in the abundance trends between the Japan Sea and the Pacific Ocean, and latitudinal differences between the northern and southern stocks indicate the impact of the climate regime shift. Generalized additive model analysis identified significant effects of environmental factors. Increased water temperature had a positive effect on the northern stock but a negative effect on the southern stock in the Japan Sea and the Pacific, whereas El Niño–southern oscillation events and the Asian monsoon had additional significant effects on the Pacific stocks. These results suggest that the abundance trends of spear squid were largely forced by environmental factors with latitudinal differences in the response to the climate regime shift.

MATING SUCCESS AND MALE COURTSHIP BEHAVIORS IN THREE POPULATIONS OF THE THREESPINE STICKLEBACK

Behaviour ◽  
2000 ◽  
Vol 137 (7-8) ◽  
pp. 1065-1080 ◽  
Author(s):  
Seiichi Mori ◽  
Masaki Ishikawa
Keyword(s):  
Pacific Ocean ◽  
Mate Choice ◽  
Mating Success ◽  
Japan Sea ◽  
Threespine Stickleback ◽  
Morphological Studies ◽  
The Pacific ◽  
The Japan Sea ◽  
The Pacific Ocean ◽  
Courtship Behaviors

AbstractGenetic and morphological studies indicated the existence of two phylogenetically distinct groups in the threespine stickleback, Gasterosteus aculeatus, around Japan. These two morphotypes were named as the Pacific Ocean group and the Japan Sea group, respectively. In the Pacific Ocean group, there are anadromous populations and populations that reside permanently in freshwater. This study presented the results of mate choice tests among three allopatric populations of Japanese threespine sticklebacks and we found significant evidence of assortative mating. A total of 226 mate choice test was carried out in 1995 and 1996. Ten courtship behaviors were collected and comparisons were made among three intrapopulational pairings. It was concluded that the Pacific Ocean group and the Japan Sea group have distinct behavioral characteristics. We also found effects of male size and female size on the probability of mating success between populations.

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