Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/19192
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Kramer, James R. | - |
dc.contributor.author | Mayer, Tatiana | - |
dc.date.accessioned | 2016-05-03T15:43:23Z | - |
dc.date.available | 2016-05-03T15:43:23Z | - |
dc.date.issued | 1984-09 | - |
dc.identifier.uri | http://hdl.handle.net/11375/19192 | - |
dc.description.abstract | <p> The forms of phosphorus in sediments of acid and non-acid shield lakes were determined in order to assess the effects of lake acidification on the mobility of sediment phosphorus. Sediment phosphorus is conveniently classified into three categories: non-apatite inorganic phosphorus (NAI-P), apatite-P and organic P. The distribution of P between different categories was found to be dependent on the lithology of the lake basin, the pH in the water column, and the redox conditions.</p> <p> More than 90% of inorganic P in shield lake sediments was in the NAI-P category, associated presumably with hydrated Fe and Al oxides. Organic P accounted for more than 40% of total P in sediments of acid lakes, which is proportionally higher than that found in sediments of neutral lakes. Bioavailable P, a measure of the fraction of sediment inorganic P readily available for biological utilization, amounted to ~70% of NAI-P, similar to that found in hard water lakes.</p> <p> A series of experiments was designed to investigate the immobilization of P from solution. The uptake of P by solid phase was explained by an adsorption mechanism. The quantitative estimates of phosphate sorption parameters for sediments of acid and non-acid lakes show that mineralogical and chemical characteristics of sediments are more important than the pH of water in determining their efficiency of P removal. Therefore, acidification of lakes does not significantly influence the uptake of P by sediments.</p> | en_US |
dc.language.iso | en_US | en_US |
dc.subject | phosphorus, mobility, lacustrine, sediments, lake, acidification | en_US |
dc.title | Phosphorus Mobility in Lacustrine Sediments Upon Lake Acidification | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | Geology | en_US |
dc.description.degreetype | Thesis | en_US |
dc.description.degree | Master of Science (MSc) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Mayer_Tatiana_1984Sept_Masters..pdf | 3.45 MB | Adobe PDF | View/Open |
Items in MacSphere are protected by copyright, with all rights reserved, unless otherwise indicated.