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Biodiversity and Succession in the Deep Ocean

Biodiversity and Succession in the Deep Ocean. Group B22 Rachael Luetschwager, Jhon Magdaleno, Samantha Walker, Zhe Liu. Introduction. Sylvan et al. ‘s work focuses on hydrothermal vents Support a large amount of life Bacteria use chemosynthesis highly toxic chemicals

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Biodiversity and Succession in the Deep Ocean

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  1. Biodiversity and Succession in the Deep Ocean Group B22 Rachael Luetschwager, Jhon Magdaleno, Samantha Walker, Zhe Liu

  2. Introduction • Sylvan et al. ‘s work focuses on hydrothermal vents • Support a large amount of life • Bacteria use chemosynthesis • highly toxic chemicals • Rich community of individuals and species • Most of the research performed on active vents. Cited: (Van Dover, 2000)

  3. Introduction • The bacteria are the primary producers • utilize toxic compounds • Chemosynthesis • Tube Worms, Limpets, Clams, Mussels all consumers • Crabs • Lots of prey attracts predators • This ecosystem is dependent on the Bacteria Cited: indiana.edu

  4. Refraction Curves for Inactive Sulfide Samples

  5. Bacterial Distribution Among The Different Samples Percentage of bacteria present

  6. Data Comparison of bacterial distribution between Inactive chimneys to Active chimneys Percentage of bacteria present Inactive chimney pyrotags (n=206,647) Inactive chimneys full-length (n=452) Active chimneys full-length (n= 834)

  7. Discussion • Comparable to other studies • Largest noted differences were higher percentages of • Epsilonproteobacteria • Members of the phylum Bacteroidetes • V6 tag sequencing possibly comparable with full-length sequencing • Future Studies • Flurescence in situ hybridization

  8. Conclusion Discovery of the persistence of life in inactive hydrothermal vents shows how entire ecosystems can adapt to a changing environment. The bacteria (primary producers) living in the vents switched from requiring heat to sustain themselves, to requiring the chemicals from the vent.

  9. Works Cited Huse, Susan M., Les Dethlefsen, David Mark Welch, and Mitchell L. Sogin. "Exploring Microbial Diversity and Taxonomy Using SSU RRNA Hypervariable Tag Sequencing." PLOS Genetics:. N.p., n.d. Web. 02 Oct. 2012.<http://www.plosgenetics.org/article/info%3Adoi%2F10.1371%2Fjournal.pgen.1000255>. Sylvan JB, Toner BM, Edwards KJ. 2012. Life and death of deep-sea vents: bacterial diversity and ecosystem succession on inactive hydrothermal sulfides. mBio 3(1): e00279-11. doi:10.1128/mBio.00279-11. Van Dover, C. (2000). The Ecology of Deep-Sea Hydrothermal Vents Princeton, New Jersey: Princeton University Press. http://www.indiana.edu/~g105lab/images/gaia_chapter_13/vent_communities.htm

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