Show simple item record

dc.contributor.authorIkeda, Greg
dc.date.accessioned2012-08-24T22:30:16Z
dc.date.available2012-08-24T22:30:16Z
dc.date.issued2012-06
dc.identifier.urihttp://hdl.handle.net/1773/20479
dc.descriptionSenior thesis written for Oceanography 444en_US
dc.description.abstract[Author's Abstract] Nutrients in the ocean are used by plankton at the bottom of the food web, which act as food for progressively larger organisms. In particular, nitrogen based nutrients are often in short supply, limiting the growth of the plankton. The process of denitrification converts these nutrients into nitrogen gas which escapes into the air, preventing them from being used. Denitrification can be broken into two processes, known as heterotrophic denitrification and the anammox reaction, which are both driven by bacteria. This study focused on these two processes in attempt to show which of them removes more nitrogen from the water. To do so, each nutrient was tagged with an isotope tracer and injected into bags of seawater. As the nutrients incubate in the bag, the bacteria inside converted the tagged nutrients into tagged nitrogen gas, which was measured using a mass spectrometer. The amount of nitrogen gas produced from each process is an indicator of the rates of heterotrophic denitrification and the anammox reaction. This information allows for an interpretation of each process’ contribution to nitrogen removal in the ocean.en_US
dc.language.isoen_USen_US
dc.relation.ispartofseriesProceedings from the University of Washington School of Oceanography Senior Thesis, Academic Year 2011-2012;
dc.subjectDenitrificationen_US
dc.subjectWater -- Nitrogen content -- Eastern Tropical North Pacific Ocean -- Observationsen_US
dc.titleComparative examination of processes affecting the marine Nitrogen cycle of the ETNPen_US
dc.typeArticleen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record