SubCストーリー。海底カメラ天文台がバークレーキャニオンで鯨骨調査を継続
Monitoring how benthic organisms utilize the sparse food resources available in deep-sea settings
Permanent presence on the seafloor allowing for long-term observation
Thanks to SubC Imaging’s Observatory System, researchers are able to establish large-scale patterns of biodiversity and ecosystem function
Led by Professor Craig Smith (University of Hawaii at Manoa), Professor Lisa Levin (Scripps Institution of Oceanography), and Dr. Fabio De Leo (Ocean Networks Canada), the University of Victoria have been using SubC’s Observatory Solution for their underwater study in Barkley Canyon since 2014.
In May 2014, three humpback whale (Megaptera novaeangliae) rib sections, one 20x20x10 block of Douglas Fir (Pseudotsunga meniziesi), and a ~ 30x30x30 block of authigenic carbonate were placed at a depth of 890m inside the Barkley Canyon -- a site at Ocean Networks Canada NEPTUNE subsea camera observatory. The purpose of this scientific experiment is to monitor the changes triggered by the implantation of various organic and inorganic substrates as well as monitor how benthic organisms utilize the sparse food resources available in deepsea settings.
Full Control of Deep-Sea Observations
**バークレーキャニオンのタイムラプス映像は、ビクトリア大学がプロジェクトの一部としてアップグレードした新世代のSubCスマートカメラを使用しています。
2時間ごとのスケジュールで、自律型の海底カメラとLEDが3枚の基板にパンニングし、それぞれ1分間位置を保持したまま5分間の動画を撮影しました。
"2時間ごとに毎日のように実験を記録し、いつでもライトを点灯させて更なる観測を行うことで、深海での観測をコントロールできるようになったのは今回が初めてです。"- ファビオ・デ・レオ博士
Cost Efficient, Long-Term Observation
Setting up a cabled ocean observatory created a permanent presence on the seafloor allowing for long-term observation. This also eliminated the need for costly, more time-consuming monitoring via multiple deployments of ROVs or AUVs in order to gather the data. With the help of the Observatory Solution, the researchers are able to establish large-scale patterns of biodiversity and ecosystem function in areas where there are whale bones.
参考文献
引用します。De Leo, Fabio & Smith, Craig R. & Levin, Lisa & Fleury, Aharon (2016).恒久的酸素最小帯の影響を受けたバークリー海底キャニオンの移植基質における初期底生継代過程, アメリカ地球物理学連合 2016.Bibcode.2016AGUOSME34B0796C
バークリー渓谷の有機物が豊富な鯨骨とウッドフォールの生息地における生物多様性、接続性、生態系機能
https://www.oceannetworks.ca/whalebone-experiment-minimum-oxygen-zone
https://www.oceannetworks.ca/researcher-residence-craig-smith-whale-falls
