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Plankton patches
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2015
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Endeavor
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Project Title: |
Phytoplankton patchiness and productivity: implications for our understanding of marine food web function and anticipated changes in a changing ocean |
Project Status: |
Submitted |
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Principal Investigator: |
Susanne Menden-Deuer, URI_GSO |
Project Institution: |
URI_GSO |
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Project ID: |
104794 |
Version #: |
1 |
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Date Submitted: |
3/10/2015 11:59:00 AM |
Created By: |
Susanne Menden-Deuer |
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Date Last Modified: |
3/10/2015 2:43:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
INST/URI/GSO - NONE - Funded |
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Summary of Field Work: |
In this project, we propose to use ship time on the R/V Endeavor to test hypotheses about the importance of phytoplankton distribution to zooplankton predation and overall primary productivity, particularly in light of temperature, a major climate change variable.
Phytoplankton are responsible for > 50% of total, annual primary productivity and predation by heterotrophic protists (i.e. microzooplankton) remove on average 65% of this productivity (Calbet & Landry 2004). As we have recently shown in the north east Pacific, patchy phytoplankton distributions are preyed upon at 2-3-fold higher rates than equally abundant but homogeneously distributed phytoplankton (Menden-Deuer & Fredrickson, 2010). Primary productions rates are similarly enhanced within phytoplankton patches (Menden-Deuer 2012). Patch focused grazing alters, immediately the net growth of phytoplankton and ultimately the structure and productivity of marine food webs. The abundance, distribution and production of phytoplankton are projected to change as a function of increasing ocean temperatures. The request for ship time made here aims to quantify the effects of temperature and distribution on food web structure, function and primary production in the highly productive waters of coastal NE waters and Georges Bank.
We propose a cruise covering a transect from Narragansett Bay out to the productive Georges Bank area. Stations are targeted to examine differences between phytoplankton distributions and grazing rates along a transect, including near coastal and further offshore areas (Figure 1). The targeted area encompasses an environmental gradient from highly productive estuarine and coastal waters to deeper shelf waters and back onto the productive Georges Bank, that will help reveal the importance of environmental context for the rate measurements proposed. The research proposed will address important questions regarding the role of temperature in driving primary and export production of plankton and what might be anticipated with respect to changing temperature regimes in the global ocean. These data will be instrumental in seeking funding from federal research agencies, as well as contributing to training students and understanding local RI waters. |
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Summary of Facility Requirements: |
6 days shiptime on Endeavor |
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Summary of other requirements and comments: |
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Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
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Request ID: |
1007675 |
Created By: |
Susanne Menden-Deuer |
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Date Last Modified: |
3/10/2015 11:59:00 AM |
Date Submitted: |
3/10/2015 11:59:00 AM |
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Year: |
2015
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Ship/Facility: |
Endeavor
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Optimum Start Date:
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3/14/2015 |
Dates to Avoid: |
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Earliest Start Date: |
3/14/2015 |
Multi-Ship Op: |
No |
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Latest Start Date: |
3/21/2015 |
Other Ship(s): |
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Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
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6 |
2 |
0 |
0 |
8 |
Repeating Cruise?
(within same year) |
No |
Interval: |
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# of Cruises: |
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Description of Repeating cruise requirements: |
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Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
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Short Description of Op Area
for use in schedules: |
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| Description of Op Area: |
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| Op Area Size/Dia.: |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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41° 27' N
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71° 27' W
map
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Ending
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41° 27' N
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71° 27' 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.) |
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Requested Start Port |
Intermediate Port(s) |
Requested End Port |
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None |
None |
None |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
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Important Info on Working in Foreign Ports
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Chief Scientist: |
Susanne Menden-Deuer, URI_GSO |
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# in Science Party |
16 |
# 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 |
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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. |
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
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