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Sponge ecology
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2011
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F. G. Walton Smith
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Project Title: |
Chemical ecology of sponges on Caribbean reefs |
Project Status: |
Submitted |
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Principal Investigator: |
Joseph R. Pawlik, UNC_W |
Project Institution: |
UNC_W |
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Project ID: |
102334 |
Version #: |
1 |
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Date Submitted: |
2/3/2010 3:22:00 PM |
Created By: |
Joseph R. Pawlik |
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Date Last Modified: |
6/29/2010 10:43:00 AM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OCE/BIO - 1029515 - Funded |
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Summary of Field Work: |
This renewal will test the ecosystem model of sponges on Caribbean reefs with three primary objectives. The first is to extend our investigations of top-down control of the sponge community. Using the World Resources Institute “Reefs at Risk” database as a guide, we will predict and compare the community structure of sponges and sponge predators on overfished vs. heavily protected reefs. The under-recognized importance of parrotfish predation on sponges will be studied using video-monitoring experiments. Allelopathic competitive interactions between sponges and corals will continue to be investigated using a modified gel-based field assay and diving-PAM fluorometry to determine the differential effects of sponge metabolites on coral photosynthesis and bleaching. The second objective is to better test a competing hypothesis that bottom-up processes, specifically the availability of picoplankton as food, control reef sponge communities. Predator-exclusion experiments will be conducted that decouple the effects of predation from sponge growth at picoplankton-rich and poor, deep and shallow reef sites. The third objective is to expand investigations of sponge life history trade-offs in resource allocation between chemical defense, growth and reproduction by examining differences in recruitment and succession among sponge communities of known age on the surfaces of artificial reefs. This component builds on our recent discovery of sponge community succession on the deck surface of the 155m long shipwreck Spiegel Grove off Key Largo, Florida, the sequence of which strongly corroborates a resource trade-off between chemical defenses and reproduction or growth. |
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Summary of Facility Requirements: |
Access to pristine reef sites in the Caribbean, particularly the Bahamas Islands, with appropriate permits for manipulative experiments and limited collections. Berths and dry lab space for 12 scientists. Wet lab space. 3 small boats, 4-5 boat engines, diving compressor. |
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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: |
1003532 |
Created By: |
Joseph R. Pawlik |
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Date Last Modified: |
2/3/2010 3:22:00 PM |
Date Submitted: |
2/3/2010 3:22:00 PM |
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Year: |
2011
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Ship/Facility: |
F. G. Walton Smith
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Optimum Start Date:
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7/1/2011 |
Dates to Avoid: |
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Earliest Start Date: |
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Multi-Ship Op: |
No |
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Latest Start Date: |
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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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14 |
0 |
0 |
0 |
14 |
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: |
Proximity -- operations in the Bahamas Islands
UM has permits with Bahamas for collecting and experiments
Need long day length for experiments; fits schedule for faculty who teach |
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Short Description of Op Area
for use in schedules: |
Bahamas |
| Description of Op Area: |
Bahamas |
| Op Area Size/Dia.: |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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Ending
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Foreign Clearance Required? |
Yes |
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: |
Joseph R. Pawlik, UNC_W |
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# in Science Party |
12 |
# 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 |
maximum use of Walton Smith |
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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. |
3 small boats with engines
diving compressor, pref. with nitrox capacity
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
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