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dc.contributor.advisorKing, Ryan Steven, 1972-
dc.contributor.authorShaftel, Rebecca, S.
dc.contributor.otherBaylor University. Dept. of Biology.en
dc.date.accessioned2010-10-08T16:26:59Z
dc.date.available2010-10-08T16:26:59Z
dc.date.copyright2010-08
dc.date.issued2010-10-08T16:26:59Z
dc.identifier.urihttp://hdl.handle.net/2104/8052
dc.descriptionIncludes bibliographical references (p. ).en
dc.description.abstractTerrestrial sources of nitrogen (N), such as N fixed by alder, may be important for sustaining production in headwater streams that typically lack subsidies of nutrients from spawning salmon. High nutrient concentrations in streams increase litter decomposition and can offset the low nutrient quality of grass litter. Alder cover was compared to watershed physiographic variables as predictors of stream N and contrasted over the growing season among 25 headwater streams. Leaf packs of bluejoint grass were deployed for two months across a nutrient gradient of 6 headwater streams. Alder cover explained over 75 – 96% of the variance in stream N. Bluejoint breakdown rates were related to dissolved stream nutrient concentrations and litter quality. A diversity of macroinvertebrate consumers utilized bluejoint for habitat and food. Alder drives stream N concentrations and the breakdown rate of bluejoint, which is an important consumer resource during the summer months when deciduous litter inputs are low.en
dc.description.statementofresponsibilityBy Rebecca S. Shaftel.en
dc.format.extent3244467 bytes
dc.format.extent449681 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.rightsBaylor University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Contact librarywebmaster@baylor.edu for inquiries about permission.en
dc.subjectAlnus.en
dc.subjectTopographic wetness index.en
dc.subjectNitrogen fixation.en
dc.subjectWatershed physiography.en
dc.subjectLeaf decomposition.en
dc.subjectFood quality.en
dc.subjectPhosphorus.en
dc.subjectJuvenile salmonids.en
dc.subjectRiparian wetlands.en
dc.titleAlder cover drives nitrogen availability and decomposition of grass litter in salmon-rearing headwater streams, Kenai Peninsula, Alaska.en
dc.typeThesisen
dc.description.degreeM.S.en
dc.rights.accessrightsWorldwide accessen
dc.contributor.departmentBiology.en


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