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Why Are There Penguins At The Equator?

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When nutrients from the ocean depths reach the sunlit surface (like in the Galapagos), life is more productive.

LEARN MORE


To learn more about this topic, start your googling with these keywords:

  • Net Primary Production (NPP): the amount of primary production that organisms do, minus the amount of carbon they use up to do so (by respiring)
  • Phytoplankton: microscopic green algae that live in water and get energy through photosynthesis. Learn more here: https://oceanservice.noaa.gov/facts/phyto.html
  • Primary Production: the synthesis of organic chemicals from carbon dioxide (mostly happens through photosynthesis)
  • Upwelling: the motion of cooler, usually nutrient-rich, water towards the ocean surface

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Script Writer: Alex Reich Script Editor: Kate Yoshida Video Illustrator: Arcadi Garcia Video Director: Alex Reich & Emily Elert Video Narrator: Emily Elert With Contributions From: Henry Reich, Ever Salazar, Peter Reich, David Goldenberg Music by: Nathaniel Schroeder

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REFERENCES


Ainley, David. Personal Communication, 2018.

Baker, A. J., et al. 2006. Multiple gene evidence for expansion of extant penguins out of Antarctica due to global cooling. Proc of Royal Soc B: Biol Sci, 273 (1582), 11-17. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1560011/

Behrenfeld, M. J., et al. 2006. Climate-driven trends in contemporary ocean productivity. Nature, 444(7120), 752. https://www.nature.com/articles/nature05317

Boersma, Dee. Personal Communication, 2018.

Boyd, P.W., et al. 2014. Cross-chapter box on net primary production in the ocean. In: Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects. Contribution of Working Group II to the Fifth Assessment Report of the IPCC [Field, C.B., et al (eds.)]. Cambridge University Press, Cambridge, UK & New York, NY, USA, pp. 133-136.

Dybdahl, Mark. Personal Communication, 2018.

Falkowski, P. G., et al. 1998. Biogeochemical controls and feedbacks on ocean primary production. Science, 281(5374), 200-206. https://goo.gl/1P7b69

Field, C. B., et al. 1998. Primary production of the biosphere: integrating terrestrial and oceanic components. Science, 281(5374), 237-240. https://cloudfront.escholarship.org/dist/prd/content/qt9gm7074q/qt9gm7074q.pdf

Karnauskas, K. B., et al. 2017. Paleoceanography of the eastern equatorial Pacific over the past 4 million years and the geologic origins of modern Galapagos upwelling. Earth and Planetary Science Letters, 460, 22-28. https://doi.org/10.1016/j.epsl.2016.12.005

LaRue, Michelle. Personal Communication, 2018.

Kallmeyer, Jens. Personal Communication, 2018.

Pockalny, Robert. Personal Communication, 2018.

Sigman, D. M. & Hain, M. P. 2012. The Biological Productivity of the Ocean. Nature Education Knowledge 3(10):21. https://www.nature.com/scitable/knowledge/library/the-biological-productivity-of-the-ocean-70631104

Stock, Charlie. Personal Communication, 2018.

Galapagos penguin diet https://neotropical.birds.cornell.edu/Species-Account/nb/species/galpen1/foodhabits

Penguin diet https://seaworld.org/en/animal-info/animal-infobooks/penguin/appendix

Cromwell Current & Galapagos: http://www.iflscience.com/environment/new-study-may-reveal-how-galapagos-islands-became-so-biodiverse/

Penguin distribution: https://seaworld.org/en/animal-info/animal-infobooks/penguin/appendix , http://www.penguins.cl/penguins-region.htm

Ocean productivity: https://ci.coastal.edu/~sgilman/770productivitynutrients.htm

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