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dc.contributor.authorMaas, Amy E.  Concept link
dc.contributor.authorWishner, Karen F.  Concept link
dc.contributor.authorSeibel, Brad A.  Concept link
dc.date.accessioned2012-10-18T17:33:08Z
dc.date.available2014-10-22T08:57:23Z
dc.date.issued2011-10
dc.identifier.urihttps://hdl.handle.net/1912/5472
dc.descriptionAuthor Posting. © The Author(s), 2011. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Marine Biology 159 (2012): 1955-1967, doi:10.1007/s00227-012-1982-x.en_US
dc.description.abstractMany pteropod species in the eastern tropical north Pacific Ocean migrate vertically each day, transporting organic matter and respiratory carbon below the thermocline. These migrations take species into cold (15-10ºC) hypoxic water (< 20 µmol O2 kg-1) at depth. We measured the vertical distribution, oxygen consumption and ammonia excretion for seven species of pteropod, some of which migrate and some which remain in oxygenated surface waters throughout the day. Within the upper 200 meters of the water column, changes in water temperature result in a ~60-75% reduction in respiration for most species. All three species tested under hypoxic conditions responded to low O2 with an additional ~35-50% reduction in respiratory rate. Combined, low temperature and hypoxia suppress the metabolic rate of pteropods by ~80-90%. These results shed light on the ways in which expanding regions of hypoxia and surface ocean warming may impact pelagic ecology.en_US
dc.description.sponsorshipThis work was funded by National Science Foundation grants to K. Wishner and B. Seibel (OCE – 0526502 and OCE – 0851043) and to K. Daly (OCE – 0526545), the University of Rhode Island, and the Rhode Island Experimental Program to Stimulate Competitive Research Fellowship program.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.relation.urihttps://doi.org/10.1007/s00227-012-1982-x
dc.titleMetabolic suppression in thecosomatous pteropods as an effect of low temperature and hypoxia in the eastern tropical North Pacificen_US
dc.typePreprinten_US
dc.description.embargo2013-06-30en_US


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