Tracking Microcystis N and C Uptake from Urea in Whole Lake Water
dc.contributor.author | VandeVusse, Hadley | |
dc.contributor.advisor | Dick, Gregory | |
dc.date.accessioned | 2024-05-31T18:13:52Z | |
dc.date.available | 2024-05-31T18:13:52Z | |
dc.date.issued | 2024-04-25 | |
dc.identifier.uri | https://hdl.handle.net/2027.42/193514 | |
dc.description.abstract | Lake Erie experiences annual summer cyanobacterial harmful algal blooms (cHABs) dominated by the cyanobacterium, Microcystis. Microcystis species are composed of a wide variety of strains, some of which produce the hepatotoxin microcystin. Lake Erie cHABs result from eutrophication driven primarily by agricultural runoff. About 60% of the world’s nitrogen fertilizer is in the form of urea, which has increased ~100-fold in the last four years. Unlike nitrate and ammonia, which are inorganic sources of nitrogen, urea is an organic source. A previous study found that cultured Microcystis can use both nitrogen and carbon from dual-labeled (15N, 13C) urea. To analyze the potential of carbon and nitrogen uptake from urea in uncultured Western Lake Erie Microcystis, we incubated whole lake water samples with dual-labeled urea. The collection of Microcystis strains sampled from the lake did not incorporate carbon but did incorporate nitrogen. Overall, this work provides further evidence that Microcystis uses urea as a source of nitrogen, but that the use of urea as a carbon source may vary across different Microcystis strains and/or environmental conditions. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | Microcystis | en_US |
dc.subject | Lake Erie | en_US |
dc.subject | cHABs | en_US |
dc.subject | urea | en_US |
dc.subject | nitrogen | en_US |
dc.title | Tracking Microcystis N and C Uptake from Urea in Whole Lake Water | en_US |
dc.type | Thesis | |
dc.description.thesisdegreename | Honors (Bachelor's) | |
dc.description.thesisdegreediscipline | Earth and Environmental Sciences | en_US |
dc.description.thesisdegreegrantor | University of Michigan | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/193514/1/VandeVusse_DeepBlue_Thesis.pdf | |
dc.identifier.doi | https://dx.doi.org/10.7302/23157 | |
dc.description.filedescription | Description of VandeVusse_DeepBlue_Thesis.pdf : Thesis | |
dc.working.doi | 10.7302/23157 | en_US |
dc.owningcollname | Honors Theses (Bachelor's) |
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