Trent University Graduate Thesis Collection

Item Description

Identifier

tula:etd

Type

Collection

Language

eng

Extent

1 item

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Displaying 1 - 2 of 2

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Displaying 1 - 2 of 2

ASSESSING THE IMPACT OF ATMOSPHERIC DEPOSITION AND HARVEST INTENSITY ON SOIL ACIDITY AND NUTRIENT POOLS IN PLANTATION FORESTS

Year: 2014, 2014

Member of: Trent University Graduate Thesis Collection

Name(s): Creator (cre): Johnson, James Anthony, Thesis advisor (ths): Aherne, Julian, Degree committee member (dgc): Watmough, Shaun A, Degree committee member (dgc): Huber, Christian, Degree committee member (dgc): Cummins, Thomas, Degree granting institution (dgg): Trent University

Abstract: <p>The objective of this thesis was to assess the influence of anthropogenic sulphur (S) and nitrogen (N) deposition, and harvesting on soil acidity and calcium (Ca<super>2+</super>), magnesium (Mg<super>2+</super>), potassium (K<super>+</super>) and N soil pools in plantation forest soils in Ireland. The response to reductions in anthropogenic S… more

The effects of environmental variables and dissolved organic matter characteristics on the diffusion coefficient of dissolved organic matter using diffusive gradients in thin films

Year: 2014, 2014

Member of: Trent University Graduate Thesis Collection

Name(s): Creator (cre): Balch, Jordan, Thesis advisor (ths): Gueguen, Celine, Degree committee member (dgc): Hickey, Brendan, Degree committee member (dgc): Thompson, Matthew, Degree committee member (dgc): Aherne, Julian, Degree granting institution (dgg): Trent University

Abstract: <p>The efficacy of the diffusive gradients in thin films (DGT) passive samplers to provide accurate measurements of free metal ions and those complexed with dissolved organic matter (DOM) was investigated. DOM controls the diffusive properties of DOM-complexed metal species in natural systems. Knowing the diffusion coeiffiecent (D) for DOM of different molecular weights (MW) and the major… more