Search by Bookstore
Holdings of Libraries in Japan
This page shows libraries in Japan other than the National Diet Library that hold the material.
Please contact your local library for information on how to use materials or whether it is possible to request materials from the holding libraries.
other
National Institute of Polar Research Repository
DigitalYou can check the holdings of institutions and databases with which Institutional Repositories DataBase(IRDB)(Institutional Repository) is linked at the site of Institutional Repositories DataBase(IRDB)(Institutional Repository).
Search by Bookstore
Bibliographic Record
You can check the details of this material, its authority (keywords that refer to materials on the same subject, author's name, etc.), etc.
- Material Type
- 文書・図像類
- Author/Editor
- Naganobu, MikioKutsuwada, KunioKondoh, JyunyaYoda, Kazuko
- Publication Date
- 2010-11-30
- Publication Date (W3CDTF)
- 2010-11-30
- Text Language Code
- eng
- Target Audience
- 一般
- Note (General)
- Antarctic krill, Euphausia superba Dana, is a keystone species of the Antarctic ecosystem. Environmental and ecological change in Antarctica is one of key issues for the global climate change. An assessment of environmental processes influencing variability of Antarctic krill is important so that krill stock affects the Antarctic ecosystem (Loeb et al., 1997). Naganobu et al. (1999) assessed variability in krill recruitment and density in the Antarctic Peninsula region focusing environmental factors (Fig. 1), including strength of westerly winds determined from sea-level pressure differences across the Drake Passage during 1982-1998 as the Drake Passage Oscillation Index (DPOI) (Fig. 2). They found significant correlation between krill recruitment and DPOI. They also found significant correlation between krill density and ozone depletion. The report of the Intergovernmental Panel on Climate Change (IPCC, 2001) reviewed DPOI and ozone depletion as factors with physical impacts on the biology of the Antarctic Ocean and took interest in its variability in the future. Therefore, we calculated a new time series of DPOI from 1952 to the up-to-date data (2010). In addition, we analyzed relationships between DPOI and oceanic condition (mean temperature from the surface to 200m: MTEM-200) using CTD data with US-AMLR program, NOAA, in the Antarctic Peninsula waters during 1990-2008. As a result, the average DPOI in austral spring had significant correlation with MTEM-200 (Fig. 3). DPOI suggests influence on the variability of oceanic condition and thus for the Antarctic krill ecosystem. On the other hand, Mangel et al. (2010) demonstrated that their modeling results were consistent with the field study of Naganobu et al. (1999) on strong negative correlations between krill density and ozone depletion. Furthermore, the ozone hole has influence on westerly winds and warming over the Southern Ocean (Turner et al. Eds, 2009) and then may cause changes in the Antarctic ecosystem. The Antarctic Peninsula region indicates extraordinary changes of climate warming, ice lost, ocean warming and disturbing krill ecosystem. For comprehensive understanding of interactions between these parameters in this remarkable region, long-term monitoring and analysis of DPOI could be the key environmental index in the Antarctic krill ecosystem under advancing global climate change.第32回極域生物シンポジウム11月30日（火） 国語研究所 ２階講堂
- Access Restrictions
- 限定公開