Atmospheric deposition : testing methods of measurement and measuring rates in Iowa, U.S.A.

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dc.contributor.author Blake, Timothy
dc.date 2019-07-10T02:06:47.000
dc.date.accessioned 2020-06-30T08:11:48Z
dc.date.available 2020-06-30T08:11:48Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2006
dc.date.issued 2006-01-01
dc.description.abstract <p>Eutrophication of aquatic systems by nutrients is a growing problem. Anthropogenic use of the nutrients nitrogen and phosphorus has increased in recent years, impacting many water bodies. Nutrients enter aquatic ecosystems through point source and nonpoint source pollution. One important nonpoint source pathway is atmospheric deposition. Atmospheric deposition of nutrients includes both dry and wet deposition. Dry deposition of nutrients occurs from particles or gas in the atmosphere being deposited to a surface in the absence of precipitation. Wet deposition of nutrients occurs in the form of rain or snow. These pathways of atmospheric transport may have increased rates of nutrient deposition in recent times from anthropogenic disturbances. Despite the importance of atmospheric deposition the literature on atmospheric deposition contains several unanswered methodological problems. Studies often use different methods in measuring atmospheric deposition. Contamination by insects falling into samplers is a frequent problem. There is also debate on whether temporal trends exist. This study investigates some of the different methods of measuring atmospheric deposition, explores the problem of contamination and whether it can be excluded or quantified, and tracks yearly trends and rates of deposition in one of the most agriculturally disturbed regions in the world.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/rtd/18942/
dc.identifier.articleid 19942
dc.identifier.contextkey 14540869
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/18942
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/72897
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/rtd/18942/Blake_ISU_2006_B56.pdf|||Fri Jan 14 21:47:58 UTC 2022
dc.subject.keywords Ecology and Evolutionary Biology
dc.title Atmospheric deposition : testing methods of measurement and measuring rates in Iowa, U.S.A.
dc.type article
dc.type.genre thesis
dspace.entity.type Publication
thesis.degree.discipline Ecology and Evolutionary Biology
thesis.degree.level thesis
thesis.degree.name Master of Science
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