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dc.contributor.authorMcQuillen, Ian
dc.date.accessioned2015-10-14T22:15:49Z
dc.date.available2015-10-14T22:15:49Z
dc.date.issued2015-06
dc.identifier.urihttp://hdl.handle.net/1773/34225
dc.descriptionSenior thesis written for Oceanography 445en_US
dc.description.abstract[author abstract] Fine scale zooplankton patchiness is an important component of similarly scaled trophic interactions. There are biological and physical drivers of patchiness--this study focused on the physical component, specifically the circulation patterns formed around sills. During a research cruise to Nootka Sound, British Colombia, 200 kHz sonar was used to collect data from zooplankton backscatterers including copepods and euphausiids. Raw sonar data was binned and a variance:mean ratio was calculated to assess zooplankton patchiness. Transects of patchiness over sills and flat bathymetry were compared, revealing higher peak patchiness over sills and more vertically stratified patchiness in flat sections. Subsampling from zooplankton layers revealed that patchiness was higher in proximity to sills when compared to flat-bathymetry sites.en_US
dc.description.sponsorshipUniversity of Washington School of Oceanographyen_US
dc.language.isoen_USen_US
dc.subjectMarine zooplankton - ecologyen_US
dc.subjectSonaren_US
dc.subjectSubmarine topography - British Columbia - Nootka Sounden_US
dc.titleThe effects of sill-circulation on zooplankton patchinessen_US
dc.typeOtheren_US


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