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Volume 64 (2010)
- Issue 6 Pages 317-
- Issue 5 Pages 243-
- Issue 4 Pages 183-
- Issue 3 Pages 113-
- Issue 2 Pages 63-
- Issue 1 Pages 1-
Volume 64, Issue 2
Displaying 1-7 of 7 articles from this issue
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Greeting
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Shigeru KATO2010 Volume 64 Issue 2 Pages 63
Published: 2010
Released on J-STAGE: July 21, 2011
JOURNAL FREE ACCESSDownload PDF (1099K)
Special Issue : “Ability to Hide of the Seawater”
Review
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Hideaki Sasaki, Akinobu Oshima, Akio Ishida, Shinichi Nagata2010 Volume 64 Issue 2 Pages 64-69
Published: 2010
Released on J-STAGE: July 21, 2011
JOURNAL FREE ACCESSEscherichia coli is present in the intestinal tracts of warm-blooded animals. Since E. coli cells are released into the environment through feces, they have evolved to possess the ability to adapt various environments such as soil, river, and ocean. The ocean, in particular, is high in salt concentration, and it is a very severe environment for E. coli, but the E. coli adapted to the marine environment, which leads to its ability to gurvive. In this review, we discuss the adaptation mechanism of E. coli cell to a high salt environment. Furthermore, we interpret an outline about the production of useful materials that can be used for high salinity adaptation of E. coli.View full abstractDownload PDF (1481K) -
Joanne E. Morello, Joyce C. Yang2010 Volume 64 Issue 2 Pages 70-78
Published: 2010
Released on J-STAGE: July 21, 2011
JOURNAL FREE ACCESSThere is growing interest in halophytic algae applications in the United States. Indeed, halophytic algae and algae products are more and more a part of everyday American life, from edible seaweeds in sushi restaurants, to the possibility that one day algae products will be the precursors to fuels in cars, trucks, and planes. This review surveys the current applied U.S. research activities on these remarkable organisms- including marine and hypersaline macroalgae, microalgae, and cyanobacteria. For example, marine algae can be used for the remediation of coasts and estuaries, and be the cause of harmful blooms that plague commercial fisheries and coastal communities. Algae are also the source of nutraceuticals that enhance human health, and neurotoxins that could cause fatalities. The body of literature presented here suggests that halophytic algae can simultaneously benefit and devastate the environment, commercial efforts and human health. Current applied halophytic algae research in the US is attempting to harness these properties for commercial use and societal benefit. These efforts indicate that there is much promise for the future development of novel applications and products from halophytic algae.View full abstractDownload PDF (1194K)
Commentary
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Kazuo Watanabe, Akira Kikuchi2010 Volume 64 Issue 2 Pages 79-81
Published: 2010
Released on J-STAGE: July 21, 2011
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—Prospects from Sea Surface Forest of Mangrove—Kazuhiro Sato2010 Volume 64 Issue 2 Pages 82-90
Published: 2010
Released on J-STAGE: July 21, 2011
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Review
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—Detection of Variations of the Surface Ocean Carbon Cycle Based on Long-Term Observational Data—Takashi Midorikawa, Yoshiteru Kitamura2010 Volume 64 Issue 2 Pages 91-98
Published: 2010
Released on J-STAGE: July 21, 2011
JOURNAL FREE ACCESSIn recent years, global warming due to an increase in atmospheric CO2 concentrations is the most urgent concern for maintaining sustainable development in the future. The ocean is one of the most important reservoirs, acting as a sink for the increasing atmospheric CO2. However, there remain considerable uncertainties in estimates of the oceanic CO2 uptake. In the western North Pacific, the Japan Meteorological Agency has periodically conduted on board observations of oceanic CO2 and hydrographic properties from 3° N to 34° N along 137° E every winter since the early 1980s. The 26-year observation records exhibited increasing long-term trends of oceanic CO2 with similar growth rates to those of atmospheric CO2 in the extensive subtropical to equatorial zones, suggesting a persistent invasion of anthropogenic CO2 into the ocean from the atmosphere. The recent uptake of anthropogenic carbon by the ocean has given rise to changes in the chemical equilibrium of the surface ocean CO2 system, resulting in a reduction of seawater pH, i.e., ocean acidification. It is important to fully understand the mechanisms of the changes in the carbonate system responding to the climate shift for future predictions of the role of the western North Pacific in global carbon cycles.View full abstractDownload PDF (1626K)
Original Paper
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—Vertical Profiles of Dissolved Bioactive Trace Metals—Yuzuru Nakaguchi, Akinori Fujita, Yoko Nakagawa, Kiminori Shitashima2010 Volume 64 Issue 2 Pages 99-108
Published: 2010
Released on J-STAGE: July 21, 2011
JOURNAL FREE ACCESSThis paper describes the vertical profiles of dissolved bioactive trace metals such as Fe, Cd, Cu, Ni, Zn and Co in the Western Tropical Pacific Ocean. The behavior and profile of bioactive trace metals were classified into three types. 1) Nutrient type behavior and profile (Cd, Ni). 2) Extremely high concentration at the surface with the concentration decreasing linearly from 10m to the bottom (Cu, Zn), 3) Distribution and behavior are different at each sampling station (Fe, Co). Significant correlations were observed between Cd, Ni and nutrient concentrations. The average concentrations of Cd, Cu, Zn, Ni and Co below 2000m in the Western Tropical Pacific were lower than those in the North Pacific Ocean. The origin of the air mass above 1500m at four stations was off shore. The air mass above 1500m at only one station passed through the New Britain Island. Thus, the dissolved Cu and Zn at the surface might be supplied from materials other than these of terrigenous origin.View full abstractDownload PDF (1524K)
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