Migratory seabirds as a tracer of contaminant biotransport
| Project/Area Number |
17K07901
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Aquatic bioproduction science
|
|---|
| Research Institution | University of Tsukuba (2019)
Hokkaido University (2017-2018) |
|---|
Principal Investigator |
SHOJI Akiko 筑波大学, 生命環境系, 准教授 (30792080)
|
|---|
| Project Period (FY) |
2017-04-01 – 2020-03-31
|
| Project Status |
Completed (Fiscal Year 2019)
|
| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
|
|---|
| Keywords | 海鳥 / 物質輸送 / 水銀 / バイオロギング / 海洋生態学 / 汚染物質 / 動物行動 / 安定同位体比分析 / 越冬海域 / 環境汚染物質分析 / 環境汚染 / 海洋生態 / 国際研究者交流（カナダ） |
|---|
| Outline of Final Research Achievements |
Seabirds are being widely used as indicators of marine pollution, including mercury, as they incorporate contaminants during their migration, and hence track contamination levels across wide ranges of space and time. However, the relative role of seabirds’ wintering distribution and habitat in contaminant biotransport remains unclear. Here, we leverage the differential uptake of contaminants across tissues to test if seabirds can record how contaminants vary in space and time. To this effect, we measured mercury concentration in three tissues that are regenerated at different timepoints during wintering, and monitored behaviour with biologging devices for rhinoceros auklets breeding on both sides of the North Pacific. In both populations, mercury concentration in bird tissues correlates with local environmental contamination, highlighting the efficacy of seabirds to estimate mercury distribution at a wide-range of ocean.
|
| Academic Significance and Societal Importance of the Research Achievements |
経済活動の活発化に伴う海洋汚染は国際的に深刻な環境問題であり、海洋生態系及び海洋資源を保全するためにはその解決が急務である。一方、海鳥類が海域から陸上へ汚染物質を運搬していることが指摘されているが、物質輸送のメカニズムについてはほとんどわかっていない。本研究により、その解明方法が示されたとともに、広大な海域に散在する汚染物質の位置の特定について、海鳥類を用いる方法が有効であることがわかった。今後本研究を発展させ、他の海洋動物へのバイオロギング技術の利用、他の体組織の分析を行うことにより、様々な汚染物質の分布状況を調べることが可能であり、海洋汚染問題の解決の一助となることが期待される。
|
Report
(4 results)
Research Products
(22 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Migratory seabirds transport mercury from marine to terrestrial ecosystems2019
Author(s)
Shoji, K.H. Elliott, S. Aris-Brosou, H. Mizukawa, S.M.M. Nakayama, Y. Ikenaka, M. Ishizuka, T, Kuwae, K. Watanabe, J. Escoruela Gonzalez and Y. Watanuki
Organizer
Pacific Seabird Annual Meeting
Related Report
Int'l Joint Research
-
-
[Presentation] 生物を介した水銀物質輸送2018
Author(s)
庄子晶子, Kyle H Elliott, Stephane Aris-Brosou, 水川葉月, 中山翔太, 池中良徳, 石塚真由美, 桑江朝比呂, 渡辺謙太, 綿貫豊
Organizer
日本生態学会
Related Report
-
[Presentation] Migratory seabirds transport mercury from marine to terrestrial ecosystems2018
Author(s)
Shoji, A., K. H. Elliott, S. Aris-Brosou, H. Mizukawa, S. M.M. Nakayama, Y. Ikenaka, M. Ishizuka, T. Kuwae, K. Watanabe, J. Escoruela Gonzalez and Y. Watanuki
Organizer
Pacific Seabird Annual Meeting
Related Report
Int'l Joint Research
-
[Presentation] 海鳥を介した汚染物質輸送2017
Author(s)
庄子晶子, Kyle H Elliott, Stephane Aris-Brosou, 水川葉月, 中山翔太, 池中良徳, 石塚真由美, 桑江朝比呂, 渡辺謙太, 綿貫豊
Organizer
日本鳥学会
Related Report
