- Created by Fabio Cabrera , last modified on 07-Nov-16
'The BARKLEY CANYON AND SLOPE DYNAMICS working group is composed of the research community interested or engaged in the analysis of ONC Barkley Canyon and slope data streams. This community shares broad interests in the understanding of physical, geological and biological processes within and surrounding Barkley Submarine Canyon. Examples of physical process are internal tide focusing and propagation, vertical mixing and upwelling triggering. Geological processes include sediment transport, slope instability triggering turbidity events and nepheloid layers. Biological processes include the trapping and concentrating zooplankton layers, dynamic of organic matter pulses to the seafloor affecting benthic community structure and ecosystem functioning. The working group helps the user community to plan for multidisciplinary experiments, share and collaborate in new project ideas, discuss potential publications and prepare for the yearly ONC cruise planning season. The working group is also a virtual space for ONC staff scientists to provide updates on issues with instruments and sensors and quality control of data streams.
Registered Working Group Users | ||
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Annie Mercier, MUN | Kim Juniper, ONC | Neus Campanya i Llovet, MUN |
Akash Sastri, ONC | Karina Ramos Musalem, UBC | Pauline Chauvet, IFREMER |
Andrew R Thurber, OSU | Kristen S Kanes, UVic | Pere Puig, ICM-CSIC |
Craig R Smith, UH Manoa | Laurenz Thomsen, JACOBS | Thomas P Gallagher |
Carol Doya, ICM-CSIC | Lisa A Levin, SCRIPPS | Paul Snelgrove, MUN |
Fabio C De Leo, ONC | Marjolaine Matabos, IFREMER | Rick Thomson, IOS |
Gwyn Lintern, NRCAN | Anna Metaxas, DAL | Susan Allen, UBC |
Jacopo Aguzzi, ICM-CSIC | Martin Heesemann, ONC | Renald Belley, MUN |
Jakob Schwendner, DFKI | Martin Heesemann, ONC | Steve F Mihaly, ONC |
Damianos Chatzievangelou, JACOBS |
WG Main Projects | Initiated | Principal Investigators | Graduate students (HQP) |
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Contribution of biodiversity, functional diversity and environmental variables to benthic flux rates, organic matter remineralization and ecosystem functioning in Northeast Pacific soft-sedimentary habitats. | May 2011 | Paul Snelgrove | Renald Belley |
Pulse-chase sediment enrichment experiment (POD3) | May 2013 | Paul Snelgrove, Kim Juniper | Neus Campanya |
INDEEP colonization-connectivity experiment | May 2013 | Anna Metaxas, Eva Ramirez-Llodra | Pauline Chauvet |
Activity Rhythms of benthic megafauna | 2012 | Jacopo Aguzzi, Marjolaine Matabos | Carol Doya, Damianos Chatzievangelou |
Benthic megafauna biodiversity and dynamics | 2011 | Marjolaine Matabos, Kim Juniper, Anna Metaxas | Pauline Chauvet |
Canyon habitat mapping | 2013 | Anna Metaxas, Marjolaine Matabos | Lia Domke |
Whale bones, wood and carbonate | May 2014 | Craig R. Smith, Lisa Levin, Fabio De Leo | Aharon Fleury |
Overwintering copepods at PODs 1,3 | May 2015 | Fabio De Leo, Akash Sastri, Martin Schewath, Martin Heesmann | Bruno Ogata |
INDEEP Global Freezer Surveys | Sept 2015 | Andrew Thurber, INDEEP working group on Ecosystem Function | |
Whale fall experiment (in proposal stage) | Sept 2015 | Craig R. Smith, Fabio De Leo, Laurenz Thomsen, Tina Treude, Jacopo Aguzzi | |
Sediment dynamics, turbidity events and nepheloid layers | May 2016 | Pere Puig, Albert Palanques |
Publications by the Working Group |
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Chatzievangelou, D., Doya, C., Thomsen, L., Purser, A., Aguzzi, J., 2016. High-Frequency Patterns in the Abundance of Benthic Species near a Cold-Seep – An Internet Operated Vehicle Application. PlosONE: doi:10.1371/journal.pone.0163808 http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0163808 Belley, R., Snelgrove, P.V.R., Archambault, P., Juniper, S.K., 2016. Environmental Drivers of Benthic Flux Variation and Ecosystem Functioning in Salish Sea and Northeast Pacific Sediments. Plos ONE: DOI: 10.1371/journal.pone.0151110 http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0151110 Doya, C, Aguzzi, J, Pardo, M, Matabos, M, Company, JB, Costa, C, Mihaly, S, Canals, M, 2014. Diel behavioral rhythms in sablefish (Anoplopoma fimbria) and other benthic species, as recorded by the Deep-sea cabled observatories in Barkley canyon (NEPTUNE-Canada). Journal of Marine Systems, 130: 69-78. Matabos, M, Bui, AOV, Mihály, S, Aguzzi, J, Juniper, SK, Ajayamohan, RS, 2014. High-frequency study of epibenthic megafaunal community dynamics in Barkley Canyon: A multi-disciplinary approach using the NEPTUNE Canada network. Journal of Marine Systems, 130: 56-68. Juniper, SK, Matabos, M, Mihály, S, Ajayamohan, RS, Gervais, F, Bui, AOV, 2013. A year in Barkley Canyon: A time-series observatory study of mid-slope benthos and habitat dynamics using the NEPTUNE Canada network. Deep-Sea Research Part II: Topical Studies in Oceanography, 92: 114-123. Purser, A, Thomsen, L, Barnes, C, Best, M, Chapman, R, Hofbauer, M, Menzel, M, Wagner, H, 2013. Temporal and spatial benthic data collection via an internet operated Deep Sea Crawler. Methods in Oceanography, 5: 1-18. Thomsen, L, Barnes, C, Best, M, Chapman, R, Pirenne, B, Thomson, R, Vogt, J, 2012. Ocean circulation promotes methane release from gas hydrate outcrops at the NEPTUNE Canada Barkley Canyon node. Geophysical Research Letters, 39 (16): L16605, DOI: 10.1029/2012GL052462. |
ONC Staff Scientists managing this group:
(contact one of us if you wish to become part of this working group)
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Document repository (shared documents - accessible only by participants):
File | Modified | |
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PNG File bc_wg_banner image.png | 16-Apr-15 by Fabio Cabrera | |
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PDF File Whale fall project in Barkley Canyon.pdf | 22-May-15 by Fabio Cabrera | |
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PDF File Smith and De Leo Barkley Canyon bone wood proposal.pdf | 22-May-15 by Fabio Cabrera | |
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JPEG File POD1_November_2014_4.jpeg | 11-Jun-16 by Fabio Cabrera | |
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JPEG File POD1_November_2014.jpeg | 11-Jun-16 by Fabio Cabrera | |
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JPEG File POD1_November_2014_3.jpeg | 11-Jun-16 by Fabio Cabrera | |
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JPEG File POD1_November_2014_2.jpeg | 11-Jun-16 by Fabio Cabrera | |
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JPEG File POD2_Nov_2014_2.jpeg | 11-Jun-16 by Fabio Cabrera | |
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JPEG File POD2_Nov_2014_3.jpeg | 11-Jun-16 by Fabio Cabrera | |
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JPEG File POD2_Nov_2014.jpeg | 11-Jun-16 by Fabio Cabrera | |
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PNG File image2016-11-7 12:20:40.png | 07-Nov-16 by Fabio Cabrera | |
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7 Comments
Fabio Cabrera
April 16, 2015 - First day of implementing/testing the ONC working group web-pages
Fabio Cabrera
Barkley Node will be repaired on May 8th, 2015, with the CS Wave Venture ship
Fabio Cabrera
another test
Fabio Cabrera
Dear Barkley Canyon Working group members,
here is the official announcement for the 2016 INCISE International Submarine Canyon Symposium to be co-hosted by ONC here in Victoria. Hopefully you will be able to attend!
Cheers,
Fabio
_____________________________
"Dear submarine canyon enthusiasts,
it is our pleasure to announce the 3rd INCISE International Submarine Canyon Symposium to take place in Victoria, British Columbia, from 25 to 27 July 2016. The symposium website url is below and contains basic information about the venue, travel and accommodation options. Ocean Networks Canada, an initiative of University of Victoria that operates the NE Pacific regional (NEPTUNE) cabled observatory is co-hosting the event with the INCISE network.
http://incise2016.oceannetworks.ca/
The symposium scientific committee is currently working on the scientific program and defining the keynote speakers. Registration and abstract submission will be open early in 2016.
Please forward this announcement to any colleagues that may not have been in close contact with the INCISE community, and mark your calendars! We are looking forward to see you in Victoria during the beautiful summer of British Columbia, and to learn and share new insights and state-of-the-art research and knowledge about submarine canyons.
Best regards,
Fabio De Leo
Veerle Huvenne,
Jaime Davies
Pere Puig
& the local organizing committee.
p.s – any inquires about the symposium please contact submarinecanyons.network@gmail.com or fdeleo@uvic.ca"
Fabio Cabrera
Dear Barkley Canyon Working Group Members,
I call your attention for the second circular announcing that registration and abstract submission is now open for the 3rd INCISE International Submarine Canyon Symposium, to be held here in Victoria, 25-27 of July this year. I encourage those who are working with ONC data from Barkley Canyon to submit abstracts. We will tentatively have a dedicated session for Barkely Canyon.
More info in our website: http://incise2016.oceannetworks.ca/
Best regards to all,
Fabio
Fabio Cabrera
Dear Barkley Canyon research community (benthic ecologists),
as you should be aware, the Barkley node and extension cables were fixed a few weeks back with joint efforts of E/V Nautilus/ROV Hercules and the cable ship Wave Venture. While power and communications are back, most of our instrument platforms are going back in the water only next week, in operations aboard the R/V Sikuliaq and using the ROV Jason.
This message concerns the deployments of seafloor cameras at POD2 (slope), POD1 (canyon axis) and POD4 (canyon flank). There are two slight modifications to the cameras that I want to call your attention to and get your feed back if you think it may affect your research:
1) removal of scaling PVC poles. The poles are acting as ‘artificial substrate’ attractors to both sessile and mobile fauna, disturbing the natural conditions of the background benthic community. The effect is clear in both sites, POD2 in the slope and POD1 in the canyon axis (pics attached). In POD3/POD4 we got rid of the poles in 2014 because of the colonization experiment packages (whalebones/wood/carbonate). Without the poles we can still get the scaling in the second plane axis by knowing the height of the camera (and of the lasers) above the seabed and the tilt angle of the camera (data we store reliably in our data base). Simple trigonometry. With camera aperture angles and also height above seafloor we can also construct perspective grids. Therefore, I suggest we remove those poles from the field of view of the camera avoiding this artifact in faunal abundance counts.
2) Rising the camera from 70 to 85 cm above the seabed. This is an option that will enhance the spectrum of possible field of views. The camera currently sits really low in the tripod after accounting for a long mounting bracket (~ 35 cm) plus the Pan and Tilt device (another ~40 cm). See attached images as well. And if we consider that we may still loose 3-5 cm as the tripod sinks into the muddy sediment of Barkley, the camera height above seabed maybe reduced even to to 65-67 cm. The tripod leg mountings offer the possibility of bringing it one level up, adding this 15 cm of clearance between the camera and the seafloor. Taking close-up footage will still be possible, just by tilting the camera downwards a bit. You may think this may represent an issue in the continuity of the time-series but considering the scaling aspect that I just mentioned above, we would be abe to extract comparable faunal densities with previous years of the time-series.
Please provide your feedback on those points at your earliest convenience, as the Skuliaq departs this Sunday with scheduled Barkley servicing early next week.
Best regards,
Fabio
Fabio Cabrera
'Artificial substrate' attraction effect of the scaling poles on the benthic fauna (Images from PODs 1 and 2). Related to the previous message.