Trent University Graduate Thesis Collection

Item Description
Identifier
tula:etd
Type
Collection
Language
eng
Extent
1 item
Rights
Copyright for all items in the Trent University Graduate Thesis Collection is held by the author, with all rights reserved, unless otherwise noted.
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Widespread changes in growth, diet and depth distribution of lake whitefish (Coregonus clupeaformis) in the Great Lakes are linked to invasive dreissenid mussels

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Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Fera, Shannon A., Thesis advisor (ths): Dunlop, Erin, Thesis advisor (ths): Ridgway, Mark, Degree committee member (dgc): Dillon, Peter, Degree granting institution (dgg): Trent University
Abstract: <p>Recent declines in growth and condition of Great Lakes' lake whitefish (Coregonus clupeaformis) have been linked to ecosystem-wide changes stemming from the invasion of dreissenid mussels. To test the influence of invasive mussels on this commercially important coregonid species, we collected archived scale samples from ten Great Lake locations and analyzed long-term changes in… more
Full Text: Widespread changes in growth, diet and depth distribution of lake whitefish (Coregonus clupeaformis) in the Great Lakes are linked to invasive dreissenid mussels A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the …

Carbon and Nitrogen Isotope Changes in Streams along an Agricultural Gradient

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Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Graham, Lisa, Thesis advisor (ths): Xenopoulos, Marguerite, Degree committee member (dgc): Dunlop, Erin, Degree committee member (dgc): Fox, Michael, Degree granting institution (dgg): Trent University
Abstract: <p>Nitrogen is a major constituent of agricultural fertilizers, and nitrogen inputs to stream water via runoff and groundwater lead to a variety of negative environmental impacts. In order to quantify the movement of nitrogen through aquatic food webs, fourteen streams with varying land uses across South-Central Ontario were sampled for two species of fish, freshwater mussels, and water for… more
Full Text:   CARBON  AND  NITROGEN  ISOTOPE  CHANGES  IN  STREAMS  ALONG  AN   AGRICULTURAL  GRADIENT   A  Thesis  submitted  to  the  Committee  on  Graduate  Studies   in  Partial  Fulfillment  of  the  Requirements  for  the  Degree  of  Master  of  Science   in …