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Tara expedition

From Wikipedia, the free encyclopedia
Oceanic research expeditions
SchoonerTara.
History
French EnsignFrance
Name
  • Antarctica
  • thenSeamaster
  • currentlyTara
BuilderSFCNVilleneuve-la-Garenne
In service1989
HomeportLorient,France
General characteristics
TypeSchooner
Displacement130 t (130long tons; 290,000 lb)
Length36 m (118 ft)
Sampling devices and working areas on-board SVTara are shown from the vessel's [a] side-view, [b] bird's-eye-view of the deck, and [c] inside-view. They consist of the [1] Continuous Surface Sampling System [CSSS]; [2] Rosette Vertical Sampling System [RVSS]; [3] wet lab and storage in liquid nitrogen; [4] High Volume Peristaltic pump [HVP-PUMP]; [5] dry lab; [6] oceanography engineers data acquisition and processing area; [7] winch; [8] video imaging area; [9] storage areas at room temperature; [10] storage areas at +4 °C and −20 °C; [11] MilliQ water system and AC-s system; [12] diving equipment, flowcytobot and ALPHA instruments; and [13] storage boxes. The flow of seawater from the continuous surface sampling system to the dry lab is shown in blue.[1]
Courtesy of the Tara Oceans Expedition
Sampling route of theTara Oceans Expedition (green track), showing station labels and areas (blue shade) where the annual mean oxygen concentration is <2 mL/L (WOA09), usually corresponding also to high CO2 concentration and low pH.[1]
SchoonerTara in Brest Harbour.

Tara is a French sailing ship used in a series of oceanic research expeditions.[2]

The boat

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Tara is a 36-metre (118 ft) aluminum-hulledschooner, formerly namedAntarctica and thenSeamaster.[3]

Designed by the naval architects Olivier Petit and Luc Bouvet, built in France on the initiative ofJean-Louis Étienne, doctor and explorer, in 1989. The schoonerAntarctica was used from 1991 to 1996 by Jean-Louis Étienne for scientific expeditions inAntarctica, at the Erebus volcano and then wintering at Spitzberg.

Under its former nameSeamaster, it was owned byPeter Blake, who was shot and killed in 2001 by pirates while sailingSeamaster on theAmazon River.[3] Following Blake's death, the yacht was bought byEtienne Bourgois, renamed Tara and dedicated to environmental expeditions.[4]

Expeditions

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Tara Arctic

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The polar schoonerTara set out to drift in the ice for approximately two years from its first departure, late in August 2006. The expedition met with interest in theoceanography community, especially in the context of theInternational Polar Year (2007–2008). DubbedTara Arctic, this voyage ended on February 23, 2008. It was part of the international DAMOCLES (Developing Arctic Modelling and Observing Capabilities for Long-term Environmental Studies) program.

Tara Oceans

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In 2009,Tara started a new expedition, dubbedTara Oceans.[5] It travelled around the world until 2013 to study CO2 capture bymarine microorganisms such asplankton on a global scale. The costs of the expedition were €3 million per year, all from private funds. The expedition was primarily funded by the French fashion designeragnès b.,[6] however, it was a collaborative effort between the Tara Expeditions Foundation, the French National Center for Scientific Research (CNRS) and 17 other international partner institutions.[7] It was able to collect more than 35,000 planktonic samples from 210 stations in every major oceanic region, which through analyses revealed more than 40 million genes, most of which were new to science.[5][8]

The samples were analyzed using a combination of DNA sequencing and microscopy. Of the 40+ million genes identified, the two biggest match domains were 58.8% bacteria and 5.4% viruses. 27.7% were not able to be matched with any currently known domains of life.[9] This fact underscores the vast unknown biological components of the world's oceans.

In addition to uncovering unknown marine biodiversity, theTara Oceans Expedition helped us to understand the role of marine microbes in the global ecosystem, address the impacts of climate change on marine life and improve ocean conservation efforts.

One of the other goals ofTara Oceans was to allow open access archives of both raw and validated data sets to scientists around the world as quickly as possible.[1] Links to all of the data sets can be found athttps://www.ebi.ac.uk/services/tara-oceans-data. As part of the expedition's public outreach efforts, a short series of documentary videos calledThe Plankton Chronicles which merged science and art was created by theVillefranche-sur-Mer Marine Station.[10]

Tara Mediterranean

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Tara Mediterranean was the next expedition that took place over seven months in 2014. It traversed the entire Mediterranean Sea with the goal better understanding the sources, transport, distribution and characteristics of surface floating plastic.[11] One of the major discoveries was that of the 2000 samples taken on the cruise at 300 different sites, all of the samples contained plastic fragments.[12]

Tara Pacific

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Tara Pacific began in May 2016. During this latest voyageTara studiedcoral reefs andplastic pollution.

Tara Microbiomes

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Between 2020 and 2023,Tara traveled the South Atlantic, along the coasts of South America and West Africa, and as far as Antarctica,[13] to study the ocean microbiome and its interactions with the climate and pollution.[14][15] The Microbiome Mission has been endorsed by theUNESCO Oceanographic Commission for contributing to the UN Decade of Ocean Science for Sustainable Development.[16]

See also

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References

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  1. ^abcPesant, S., Not, F., Picheral, M., Kandels-Lewis, S., Le Bescot, N., Gorsky, G., Iudicone, D., Karsenti, E., Speich, S., Troublé, R. and Dimier, C. (2015) "Open science resources for the discovery and analysis ofTara Oceans data".Scientific data,2(1): 1–16.doi:10.1038/sdata.2015.23.
  2. ^"Explorer et sensibiliser pour protéger l'Océan | Fondation Tara Océan".Fondation Tara Océan.Archived from the original on 2025-04-05. Retrieved2025-04-12.
  3. ^ab"Sir Peter Blake's former yacht sails into Whangarei".
  4. ^Ainsworth, Claire (5 September 2013)."Systems ecology: Biology on the high seas".Nature.501 (7465):20–23.Bibcode:2013Natur.501...20A.doi:10.1038/501020a.PMID 24005399.
  5. ^ab"Tara Oceans expedition yields treasure trove of plankton data".Science Daily. ScienceDaily. 21 May 2015. Retrieved17 August 2015.
  6. ^Morelle, Rebecca (22 May 2015)."Ocean's hidden world of plankton revealed in 'enormous database'".BBC News.
  7. ^Sunagawa, Shinichi; Acinas, Silvia G.; Bork, Peer; Bowler, Chris; Eveillard, Damien; Gorsky, Gabriel; Guidi, Lionel; Iudicone, Daniele; Karsenti, Eric; Lombard, Fabien; Ogata, Hiroyuki; Pesant, Stephane; Sullivan, Matthew B.; Wincker, Patrick; de Vargas, Colomban (August 2020)."Tara Oceans: towards global ocean ecosystems biology".Nature Reviews Microbiology.18 (8):428–445.doi:10.1038/s41579-020-0364-5.ISSN 1740-1534.PMID 32398798.S2CID 218605895.
  8. ^"Tara Oceans expedition: researchers map the world of plankton".UNESCO. UNESCO. 26 May 2015. Retrieved17 August 2015.
  9. ^Pierella Karlusich, Juan José; Ibarbalz, Federico M.; Bowler, Chris (2020-01-03)."Phytoplankton in the Tara Ocean".Annual Review of Marine Science.12 (1):233–265.Bibcode:2020ARMS...12..233P.doi:10.1146/annurev-marine-010419-010706.ISSN 1941-1405.PMID 31899671.S2CID 209748051.
  10. ^"Plankton Chronicles".Chroniques du Plancton. Retrieved2023-02-19.
  11. ^Pedrotti, Maria Luiza; Lombard, Fabien; Baudena, Alberto; Galgani, François; Elineau, Amanda; Petit, Stephanie; Henry, Maryvonne; Troublé, Romain; Reverdin, Gilles; Ser-Giacomi, Enrico; Kedzierski, Mikaël; Boss, Emmanuel; Gorsky, Gabriel (2022-09-10)."An integrative assessment of the plastic debris load in the Mediterranean Sea".Science of the Total Environment.838 (Pt 1) 155958.Bibcode:2022ScTEn.838o5958P.doi:10.1016/j.scitotenv.2022.155958.ISSN 0048-9697.PMID 35580673.S2CID 248806412.
  12. ^"The plastic plague in the Mediterranean | Tara Mediterranean".Fondation Tara Océan. Retrieved2023-02-19.
  13. ^deborah (2022-02-24)."Antarctica 2022: scientific expedition on Tara | Mission Microbiomes".Fondation Tara Océan.Archived from the original on 2023-10-03. Retrieved2025-04-12.
  14. ^"Understanding the invisible life of the ocean | Mission Microbiomes".Fondation Tara Océan.Archived from the original on 2024-02-29. Retrieved2025-04-12.
  15. ^"Part 3 of the Microbiome mission: the schooner Tara samples the West African coast for 5 months".
  16. ^"La Fondation Tara Océan s'engage avec l'UNESCO pour la Décennie des Nations Unies des Sciences Océaniques au service du développement durable" (in French).Archived from the original on 2023-12-29. Retrieved2025-04-12.

External links

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