| Project/Area Number |
07045033
|
|---|
| Research Category |
Grant-in-Aid for international Scientific Research
|
| Allocation Type | Single-year Grants |
|---|
| Section | University-to-University Cooperative Research |
|---|
| Research Field |
General fisheries
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
OHTANI Kiyotaka Hokkaido University, Faculty of Fisheries, Professor, 水産学部, 教授 (40001606)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
ONISHI Hiroji Hokkaido University, Faculty of Fisheries, Instructor, 水産学部, 助手 (80241371)
SHIGA Nanobu Hokkaido University, Faculty of Fisheries, Lecturer, 水産学部, 講師 (30091466)
NAKATANI Toshikuni Hokkaido University, Faculty of Fisheries, Associate Professor, 水産学部, 助教授 (80188979)
SAITOH Sei-ichi Hokkaido University, Faculty of Fisheries, Associate Professor, 水産学部, 助教授 (70250503)
SAKURAI Yasunori Hokkaido University, Faculty of Fisheries, Associate Professor, 水産学部, 助教授 (30196133)
|
|---|
| Project Period (FY) |
1995 – 1997
|
| Keywords | Bering Sea / Biological Production / Climate Change / Walleye Pollock / Marine Environment / Chlorophyll / Zooplankton / Bentic marine community |
|---|
| Research Abstract |
During Bering Sea surveys by the T/S Oshoro-Maru of Hokkaido University in the summers of 1995,1996 and 1997, we conducted a joint study of the bioclimatology in the Bering Ses with sientists from the University of Alaska, Fairbanks. In this study, we examined the relationship between the physical environment, production structure and recruitment of keystone species, including walleye pollock Theragra chalcogramma, related to recent climatic changes in th Bering Sea ecosystem. The results will be published in teh Memories of the Faculty of Fisheries.Hokkaido University, in the summer of 1998. A summary of our joint study is as follows :
1. We studied coastal upwelling in the St.Lawrence Island Polynya in the summers of 1994 and 1995 by satellite and ship observations.
2, We clarified interannual variation and vertical distribution of appendicularians in the St.Lawrence Island Shelf in summer.
3. We examined biophysical processes relevant to recruitment dynamics of walleye pollock in the eastern Bering Sea during the summers of 1995,1996 and 1997. We will present a conceptual model of factors influencing pollock recruitment in this area.
4. We clarified the effect of temperature and salinity on development and survival of eggs and larvae of Arctic cod, Boreogadus saida as an indicator species related to climatic change in the Berin Sea.
5. We studied the bottom fish composition and food habits in the southern water off the St.Lawrence Island in the Bering Sea.
|
