1b:I[42426,["/_next/static/immutable/chunks/1xctgzqre-wsy.js","/_next/static/immutable/chunks/06_-wz6pdtp2b.js","/_next/static/immutable/chunks/30e52g49hg40p.js","/_next/static/immutable/chunks/02yq6tul2z-oh.js","/_next/static/immutable/chunks/10bx_ec2vj7n_.js","/_next/static/immutable/chunks/33bfn03fo8xnt.js","/_next/static/immutable/chunks/0tfjf78scu61b.js","/_next/static/immutable/chunks/31xnvej4n1bi9.js"],"default"] 1c:T1254,NSF abstract: If life were to disappear from the deep sea, would we notice? We only have a cursory understanding of this vast region and the connectivity among its communities and the rest of the oceans, and yet the ecosystems of the deep sea have been implicated in the larger function of the global marine ecosystems. We now rely on the deep ocean for food, energy, novel drugs and materials, and for its role in the global cycling of carbon, as well as for supporting services such as habitat creation, nutrient replenishment for shallow waters, and the maintenance of biodiversity. Cold seeps, active areas of the seafloor where methane and other chemicals are released, are key features along the continental margins worldwide. To characterize how methane seep communities interact with the surrounding ecosystems and vice versa, we will study methane seeps off the Pacific coast of Costa Rica in 2017 and 2018. It is the sphere of influence around the seep, both along the seafloor and up into the water column, that we seek to better understand. We will map the structure and the chemistry surrounding these habitats using a novel 3-dimensional framework, combining typical transects with vertical characterizations of the water column just above the seafloor. This will include measurements of methane flux into the water column and changes in the overlying carbonate chemistry and oxygen levels that are critical to our understanding of the effect of warming, oxygen loss and ocean acidification in this region. Within this framework, we will collect seep organisms in sediments and on rocks (including all sizes from microbes to large animals), and transplant some of these from within the area of seep influence to the background deep sea, and vice-versa. Together, these studies will help us to measure the size of the seep sphere of influence, and also demonstrate the role of these seeps within the deep sea and the greater, global, marine ecosystem. We will share this information with a group of teachers during a series of workshops in the San Diego area, at an exhibit at the Birch Aquarium, and through the work of an artist who has worked extensively with marine organisms in extreme environments. Chemosynthetic ecosystems are inextricably linked to the broader world-ocean biome and global biogeochemical cycles in ways that we are just beginning to understand. This research will identify the form, extent, and nature of the physical, chemical, and biological linkages between methane seeps and the surrounding deep-sea ecosystem. The proposed research builds critical understanding of the structural and functional processes that underpin the ecosystem services provided by chemosynthetic ecosystems. We target a critical continental margin, Costa Rica, where methane fates and dynamics loom large and play out in an setting that reflects many oceanographic stressors. We will use quantitative sampling and manipulative studies within a 3-dimensional oceanographic framework. We will ask what are the shapes of the diversity and density functions for organisms of different size classes and trophic position over the transition from the seep habitat through the ecotone to the background deep sea? Further, we will ask how do depth, dissolved oxygen concentrations, pH and carbonate ion availability, relative rates of fluid flux, and substrate (biogenic, authigenic carbonate, sediments) alter these linkages and interactions with the surrounding deep sea? Evidence for distinct transitional communities and biotic patterns in density and alpha and beta diversity will be quantified and placed in a global biogeographic context. All of these investigations will occur across biological size spectra: for microorganisms (archaea, bacteria, microeukaryotes), the macrofauna, and the megafauna that form biogenic habitats. Our research results will be interpreted in the context of potential effects of global ocean change in the equatorial Pacific to determine how the linkages with the surrounding deep sea will be altered as anthropogenic impacts proceed in the future. Related publications: Levin, L.A., V.J. Orphan, G.W. Rouse, W. Ussler, A. E. Rathburn, G. S. Cook, S. Goffredi, E. Perez, A. Waren, B. Grupe, G. Chadwick, B. Strickrott. (2012). A hydrothermal seep on the Costa Rica margin: Middle ground in a continuum of reducing ecosystems. Proc. Royal Soc. B. 279: 2580-88 doi: 10.1098/rspb.2012.0205 Sahling, H., Masson, D. G., Ranero, C. R., Hühnerbach, V., Weinrebe, W., Klaucke, I., & Suess, E. (2008). Fluid seepage at the continental margin offshore Costa Rica and southern Nicaragua. Geochemistry, Geophysics, Geosystems 9: doi: 10.1029/2008GC0019786:["$","$L1b",null,{"dataset":{"_id":"840955","description":"","problem":"","acquisition":"

Locations (decimal lat/long) of hard substrata and pushcore samples collected during cruise AT37-13 and AT42-03. Samples collected using HOV Alvin.

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BCO-DMO processing notes:

Changed parameter names to comply with database requirements
Adjusted longitude locations to fit general location (added -)
Changed, to ; to comply with database requirements
Added 6 more locations after processing other datasets that showed the first datafile was incomplete.
Removed duplicate row with Alvin_Dive_Sample_Number == 4912_rock_1-A

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Sample type : push core or hard substrate

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text description of type of sample collected (rock, bio, fluid, etc)

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Alvin dive number and sample number

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text description of type of sample collected (rock, bio, fluid, etc)

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Latitude of sample location, south is negative

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latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes

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Longitude of sample location, west is negative

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longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes

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Cruise ID: AT37-13 or AT42-03

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cruise identifier, e.g. en9402 R/V Endeavor cruise 9402

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A related dataset that is supplanted, displaced, or superseded by this dataset because of a correction.

\n","relation_desc":"This dataset \"Hard Substrates and Push Core Sampling Locations, AT37-13 & AT42-03\" replaces dataset \"AT37-13 Push Core Sampling Locations\".","citation":"Levin, L., Rouse, G. (2020) Locations of sediment push cores collected during R/V Atlantis cruise AT37-13 in the Pacific Ocean off Costa Rica from May to June 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-01-09 doi:10.1575/1912/bco-dmo.750284.1"},{"_id":"750308","name":"[DEPRECATED] AT37-13 Hard Substrata Sampling Locations","url":"","relation_type":"Replaces Old Versions","type_desc":"

A related dataset that is supplanted, displaced, or superseded by this dataset because of a correction.

\n","relation_desc":"This dataset \"Hard Substrates and Push Core Sampling Locations, AT37-13 & AT42-03\" replaces dataset AT37-13 Hard Substrata Sampling Locations","citation":"Levin, L., Rouse, G. (2020) Locations of hard substrata collected during R/V Atlantis cruise AT37-13 in the Pacific Ocean off Costa Rica from May to June 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-01-09 doi:10.1575/1912/bco-dmo.750308.1"},{"_id":"750091","name":"Macrofauna Sediment Community Matrix, AT37-13 & AT42-03","url":"","relation_type":"IsReferencedBy","type_desc":"

A dataset that was used as a source of information.

\n","relation_desc":"This dataset provides extra information on the sampling locations","citation":"Levin, L. A., Rouse, G. (2021) Matrix of taxon by sample for sediment push cores collected by HOV Alvin during R/V Atlantis cruise AT37-13 and AT42-03 in the Pacific margin of Costa Rica in 2017 and 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2) Version Date 2021-03-17 doi:10.26008/1912/bco-dmo.750091.2"},{"_id":"842061","name":"Push Core Faunal & Environmental Characteristics","url":"","relation_type":"IsReferencedBy","type_desc":"

A dataset that was used as a source of information.

\n","relation_desc":"This dataset provides extra information on the sampling locations.","citation":"Levin, L. A., Rouse, G., Ashford, O. S. (2021) Macrofaunal diversity and abundance characteristics of sediment push cores collected by HOV Alvin during R/V Atlantis cruise AT37-13 and AT42-03 in the Pacific margin of Costa Rica in 2017 and 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-02-25 doi:10.26008/1912/bco-dmo.842061.1"},{"_id":"747699","name":"Hard Substrates Community Matrix, AT37-13 & AT42-03","url":"","relation_type":"IsReferencedBy","type_desc":"

A dataset that was used as a source of information.

\n","relation_desc":"Sampling locations","citation":"Levin, L. A., Rouse, G., Pereira, O. S. (2021) Matrix of taxon by sample for hard substrates collected by HOV Alvin during R/V Atlantis cruise AT37-13 and AT42-03 in the Pacific margin of Costa Rica in 2017 and 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2) Version Date 2021-03-16 doi:10.26008/1912/bco-dmo.747699.2"}],"services":[{"grouping":"","items":[{"name":"View Data","description":"An in-browser view of the primary tabular data file","url":"https://www.bco-dmo.org/dataset/840955/data/view","contentType":"text/html","actionType":"view"}]},{"grouping":"Metadata","items":[{"name":"HTML","description":"A simple HTML page of the dataset metadata","url":"https://www.bco-dmo.org/dataset/840955/description","contentType":"text/html","actionType":"view"},{"name":"PDF","description":"A PDF of the HTML dataset metadata","url":"https://www.bco-dmo.org/dataset/840955/Dataset_description.pdf","contentType":"application/pdf","actionType":"download"},{"name":"ISO 19115-2 (NOAA Profile)","description":"","url":"https://www.bco-dmo.org/dataset/840955/iso","contentType":"application/xml","actionType":"download"}]}],"programs":[],"projects":[{"_id":"648472","name":"Collaborative research: Quantifying the biological, chemical, and physical linkages between chemosynthetic communities and the surrounding deep sea","acronym":"Costa Rica Seeps","description":"$1c"}],"archives":[{"id_value":"10.26008/1912/bco-dmo.840955.1","url":"https://doi.org/10.26008/1912/bco-dmo.840955.1","date_assigned":"2021-04-22","version_date":"2021-02-19","archiver":"Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)","archiver_id":"272"}],"license":{"name":"Creative Commons Attribution 4.0","id":"CC-BY-4.0","uri":"https://creativecommons.org/licenses/by/4.0/","spdxUri":"https://spdx.org/licenses/CC-BY-4.0"},"metrics":{"views":{"count":208},"downloads":{"count":343}}},"fileId":"903263"}]