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Assembly of Woodfall
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2019
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Pelican
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Project Title: |
The energetic assembly of biological communities: a test with deep-sea woodfalls |
Project Status: |
Submitted |
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Principal Investigator: |
Craig R. McClain, Louisiana |
Project Institution: |
LUMCON |
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Project ID: |
105132 |
Version #: |
6 |
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Date Submitted: |
1/15/2016 10:32:00 AM |
Created By: |
Craig R. McClain |
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Date Last Modified: |
2/22/2018 3:22:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OCE/BIO - 1634586 - Funded |
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Summary of Field Work: |
Wood packets will be deployed at three different sites at approximately 2000m. 12 wood falls of varying sizes and wood type (2 types) will be deployed at each locality (24 wood
deployments at 3 localities). Deployments will occur along the central California coast.
Two research cruises are planned. In the early 2017 wood treatments will be deployed. The
deployment cruise is expected to last 8 days including 3 contingency days. Two of these days
are transit to/from port at San Francisco. The 24 wood bundles at each deployment site will
be carried to the seafloor on a benthic elevator. An ROV/submersible will deploy and
position the wood bundles at the site. The remaining time on the dive will be spent taking
sediment cores and conducting video transects for benthic megafauna. To conduct all of the
operations at a single site should take no more than 8-9 hours of bottom time, with early
morning elevator deployment and evening elevator recovery. The three deployment areas
are 100km apart ensuring that transit can occur overnight (this assumes a 8.15 knots and
conservative estimate for the research vessel is 11 knots).
Each piece of wood will be deployed in synthetic fiber mesh bag sewn around the wood.
This will allow for retrieval of wood deployments after they begin to deteriorate. Each log will
also be equipped with polypropylene rope handle to allow for the manipulator to grab
deployments. Each wood deployment will be marked with a number for identification.
Retrieval will occur in the mid 2018. Again, based on previous work retrieval and
background sampling at each site is estimated to take a single day. Wood bundles will be
places on a benthic elevator for retrieval. As part of PI McClain’s prior work, 300 µm mesh
bags with sealable closing lids were developed and successfully used with an ROV. These
ensure wood bundles remain intact and loss of the wood fall community during retrieval and
cross contamination among different treatments is kept at minimum. In addition during
retrieval dives, 3 cores (7-cm diameter) per log will be taken of the sediment surrounding the
deployments as well as 100-m video transects around and away from the deployment site.
Given the importance of the retrieval, extra contingency days are built in to make the cruise
length 10 days.
Off San Francisco Bay
2000m 37.89394 123.59637
North of Monterey Canyon
2000m 37.19855 123.24230
South of Monterey Canyon
2000m 36.32569 122.43706
******Special Note and Update: The nature of the field work is experimental and not location dependent. The basic requirement is three locations at similar depths (greater or equal to 1000m and ~100km apart). Any ROV/HOV that has two manipulator arms and reaching 1000m can be utilized. The ocean or region is also flexible, e.g. the Pacific is proposed but the Gulf of Mexico or other regions are equally desirable. Deployment date is flexible but retrieval needs to be ~1.5 years after deployment. A benthic elevator deployment and retrieval is required at each site. |
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Summary of Facility Requirements: |
Either a ROV or Submersible is required that can obtain 1000 meter depth (2000m originally proposed). Two manipulator arms as well as bioboxes and canisters are required. Core tubes are required on either the ROV/submersible or on a benthic elevator. A benthic elevator deployment and retrieval is required at each site.
******Special Note and Update: The nature of the field work is experimental and not location dependent. The basic requirement is three locations at similar depths (greater or equal to 1000m and ~100km apart). Any ROV/HOV that has two manipulator arms and reaching 1000m can be utilized. The ocean or region is also flexible, e.g. the Pacific is proposed but the Gulf of Mexico or other regions are equally desirable. Deployment date is flexible but retrieval needs to be ~1.5 years after deployment. A benthic elevator deployment and retrieval is required at each site. |
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Summary of other requirements and comments: |
The work can be piggy backed with other projects.
******Special Note and Update: The nature of the field work is experimental and not location dependent. The basic requirement is three locations at similar depths (greater or equal to 1000m and ~100km apart). Any ROV/HOV that has two manipulator arms and reaching 1000m can be utilized. The ocean or region is also flexible, e.g. the Pacific is proposed but the Gulf of Mexico or other regions are equally desirable. Deployment date is flexible but retrieval needs to be ~1.5 years after deployment. A benthic elevator deployment and retrieval is required at each site. |
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Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
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Request ID: |
1008218 |
Created By: |
Craig R. McClain |
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Date Last Modified: |
2/22/2018 3:22:00 PM |
Date Submitted: |
1/15/2016 10:32:00 AM |
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Year: |
2019
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Ship/Facility: |
Pelican
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Optimum Start Date:
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2/10/2019 |
Dates to Avoid: |
NA |
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Earliest Start Date: |
1/30/2019 |
Multi-Ship Op: |
No |
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Latest Start Date: |
3/15/2019 |
Other Ship(s): |
NA |
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Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
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24 |
4 |
2 |
4 |
34 |
Repeating Cruise?
(within same year) |
Yes |
Interval: |
20 |
# of Cruises: |
2 |
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Description of Repeating cruise requirements: |
Recovery of wood fall packages deployed in the previous year require more time intensive ROV use. This also applies to the post-dive processing, storage and preservation of wood fall packages. It would be favorable to recover half of the packages in late February or early March so that processing and storage can be competed prior to the recovery of the additional experiments in early April. The second cruise would then be used to recover the remaining wood fall packages. We request two 12 day cruises with 2 days of MOB and 1 day of DEMOB. Transit days for each cruise would be two days, one day out and one day in to port. |
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
Dates requested allow 1.5 years for experimental deployment. October is ideal for recovery since it coincides with decreased ship use and favorable weather in the northern Gulf of Mexico. Deployment of these wood fall experiments used the R/V Pelican, we fear however that recovery will be a much more arduous task both for the ROV needed and the amount of science personnel required to process wood packages. Our current request asks for the Pelican but a larger ship is an option that we are open to for the recovery cruises. |
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Short Description of Op Area
for use in schedules: |
NE GoM |
| Description of Op Area: |
Northeast Gulf of Mexico continental slope |
| Op Area Size/Dia.: |
190 |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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29.253787° N
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90.661143° W
map
29° 15.22722' N
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90° 39.66858' W
map
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Ending
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29.253789° N
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90.661143° W
map
29° 15.22734' N
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90° 39.66858' W
map
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Show Degrees Minutes |
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Foreign Clearance Required? |
No |
Coastal States:
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 Important Info on Foreign Research Clearances
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Are you or any member in your science party bringing in any science equipment items which are regulated for export by the International Traffic in Arms Regulations (ITAR) and/or the Export Administration Regulations (EAR)?
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No |
If yes, have you applied for the necessary permits through your export control office?
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No |
| Questions about ITAR/EAR regulations?
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Comments about foreign clearance requirements or
description of any other special permitting requirements
(e.g., MMPA, ESA, IHA, Marine Sanctuaries, etc.) |
NA |
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Requested Start Port |
Intermediate Port(s) |
Requested End Port |
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Cocodrie, LA, USA |
None, |
Cocodrie, LA, USA |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
Cocodrie is the home of the R/V Pelican and LUMCON |
Important Info on Working in Foreign Ports
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Chief Scientist: |
Craig R. McClain, Louisiana |
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# in Science Party |
14 |
# of different science teams |
1 |
# Marine Technicians to be
provided by ship operator:
(include in science party total)
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1 |
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Explanation of Science Party Requirements and Technician Requirements |
The science team represents PI, co-PI, graduate student, one undergraduate, and photographer (needed for outreach component). Additional member is required operator provided technician. |
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 Dynamic Positioning | ADCP | Multibeam | Seismic |
| Dredging/Coring/Large Dia. Trawl Wire | Stern A-frame | Fiber Optic (.681) | 0.680 Coax Wire |
| SCUBA Diving | Radioisotope use - briefly describe | NO Radioisotope use/Natural level work | Other Operator Provided Inst. - Describe |
| 0 PI-Provided Vans - briefly describe | MOCNESS | | |
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Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling. |
ROV/Submersible and Benthic Elevator
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
Deployment retrieval requires ROV/HOV and benthic elevator at each site. Cold lab van requested for processing wood falls and sediment cores. |
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