| Contributors | Affiliation | Role |
|---|---|---|
| Levin, Lisa A. | University of California-San Diego (UCSD-SIO) | Principal Investigator |
| Rouse, Gregory | University of California-San Diego (UCSD-SIO) | Co-Principal Investigator |
| Copley, Nancy | Woods Hole Oceanographic Institution (WHOI) | BCO-DMO Data Manager |
Species counts (per 200cm2) on rocks that were transplanted between active and inactive areas of Hydrate Ridge North seeps (AT 18-10).
Alvin submersible placed and collected rocks.
Specimens were identified to most specific level possible.
| File |
|---|
seep_transplant.csv (Comma Separated Values (.csv), 123.63 KB) MD5:9105b0b633eb686eb5aea2f0049f4a93 Primary data file for dataset ID 3764 |
| Parameter | Description | Units |
| cruise_id | cruise identification; Atlantis | alphanumeric |
| region | broad area of study | text |
| site | location within region | text |
| station | station name | alphanumeric |
| lat | latitude; West is negative | decimal degrees |
| lon | longitude; North is positive | decimal degrees |
| taxon | taxonomic name | text |
| sample_size | sample size | integer |
| abundance_200sqcm | taxon abundance | per 200 cm^2 |
| abund_stderr | standard error of abundance value | dimensionless |
| abund_pcent | percent taxon abundance of total sample | percent |
| Dataset-specific Instrument Name | Alvin tube core |
| Generic Instrument Name | Alvin tube core |
| Generic Instrument Description | A plastic tube, about 40 cm (16 inches) long, is pushed into the sediment by Alvin's manipulator arm to collect a sediment core. |
| Dataset-specific Instrument Name | Multi Corer |
| Generic Instrument Name | Multi Corer |
| Dataset-specific Description | Ocean Instruments MultiCorer |
| Generic Instrument Description | The Multi Corer is a benthic coring device used to collect multiple, simultaneous, undisturbed sediment/water samples from the seafloor. Multiple coring tubes with varying sampling capacity depending on tube dimensions are mounted in a frame designed to sample the deep ocean seafloor. For more information, see Barnett et al. (1984) in Oceanologica Acta, 7, pp. 399-408. |
| Website | |
| Platform | R/V Atlantis |
| Start Date | 2011-08-31 |
| End Date | 2011-09-08 |
| Description | Cruise information and original data are available from the NSF R2R data catalog. Methods & Sampling Species counts (per 200cm2) on rocks that were transplanted between active and inactive areas of Hydrate Ridge North seeps (AT 18-10). Processing Description AT 15-68 was conducted with ALVIN at the northern, southern and southeast summits of Hydrate Ridge from July 30-Aug. 9, 2010, and AT 18-10 was conducted with ROV Jason, to recover experiments placed at Hydrate Ridge in 2010. |
This RAPID project will conduct 5 submersible or ROV dives to collect a series of colonization experiments deployed in March 2009 on Mound 12 off Costa Rica (997 m). These experiments were deployed opportunistically, and to optimize the information that could be obtained, the PIs needed to recover them within a 12 month time frame. Early colonization of rock, wood, shell and tube substrates will be studied. The microbes, foraminiferans and metazoans present after 6-12 mo will be compared to those colonizing similar experiments to be deployed at Hydrate Ridge, where seeps occur within an oxygen minimum zone. The overall project goal is to integrate physical, geological, chemical and biological data to develop a holistic view of the influence of seep-generated carbonate hard-ground ecosystems on margins.
The objectives of the research are to (a) Compare colonizers at seeps off Costa Rica and Hydrate Ridge to assess the importance of different oxygen regimes in the development of anaerobic methane oxidation, sulfide oxiders and other microbial metabolisms on hard substrates, and to evaluate their roles in driving protozoan and metazoan succession at methane seeps. (b) Deploy a suite of biotic and abiotic substrates to distinguish the specific roles of carbonate substrate from those of other hard substrates (wood, clam and mussel shells, worm tubes) available. (c) Explore the similarity of vent and seep colonization processes by comparing colonization at the Costa Rica seeps, where vent species are common, to the Hydrate Ridge seeps, where they are not. (d) Determine whether there are diagnosable biogeographic isotope or other biomarker signatures from newly recruited Costa Rica microbial, foraminiferal and animal populations at active vs. inactive seeps, and whether these differ from those at Hydrate Ridge.
This research will involve international participation from Costa Rican scientists at the Univ. of Costa Rica.