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Biodiversity and Succession in the Deep Ocean

Biodiversity and Succession in the Deep Ocean. By Group B21: Brendan Schmidt, Sam Starcevic, Jimmy Nguyen. Introduction: Ecological Succession. Primary succession Secondary succession Ex: lava flow vs. forest fire. Source: http ://www.physicalgeography.net/fundamentals/9i.html.

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Biodiversity and Succession in the Deep Ocean

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  1. Biodiversity and Succession in the Deep Ocean By Group B21: Brendan Schmidt, Sam Starcevic, Jimmy Nguyen

  2. Introduction: Ecological Succession • Primary succession • Secondary succession • Ex: lava flow vs. forest fire Source: http://www.physicalgeography.net/fundamentals/9i.html

  3. Introduction: Hydrothermal Vents • Key role in evolution • Hot beds of bacterial activity • Hot vents each have a lifetime and eventually become inactive Source: http://www.ceoe.udel.edu/deepsea/level-2/geology/vents.html

  4. Introduction: Sylvanet al.Experiment • Provide evidence that ecological succession occurs at hydrothermal vents after active state • Two sequencing techniques • Comparison of biodiversity of inactive and active vents Source: http://www.pmel.noaa.gov/pubs/outstand/embl1429/north.shtml

  5. Data/Results • Rarefaction Curves • Biodiversity of Inactive Vents • Comparison to Active Vents Source: http://mbio.asm.org/content/3/1/e00279-11.full.pdf+html

  6. Data/Results Source: http://mbio.asm.org/content/3/1/e00279-11.full.pdf+html • Bacterial Populations are Significantly Different • Alpha-, Beta-, Delta-, andGammaproteobacteria dominate • Lack of Epsilonproteobacteria and Aquificae

  7. What Does it Mean? • Proteobacteria in vents recovered after cessation of venting • Composition different from active vents • Evidence reveals diverse set of geochemical transformations Source: http://mbio.asm.org/content/3/1/e00279-11.full

  8. Conclusion • Like in Jurassic Park, Life finds a way. Source: http://thatwasjunk.com/2010/12/27/my-favorite-movies-7-jurassic-park/

  9. Literature Citations • 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. • . "Ecological Succession." . Pennsylvania State University, 2002. Web. 29 Sep 2012. <http://www.psu.edu/dept/nkbiology/naturetrail/succession.htm>. • . "Hydrothermal Vents." Voyage to the Deep. University of Delaware College of Marine Studies, n.d. Web. 29 Sep 2012. <http://www.ceoe.udel.edu/deepsea/level-2/geology/vents.html>.

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