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Response of ammonium uptake to carbo...

Meyer, Anna DeForest.

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Response of ammonium uptake to carbon availability in an agriculturally influenced first order stream.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Response of ammonium uptake to carbon availability in an agriculturally influenced first order stream./
作者:	Meyer, Anna DeForest.
面頁冊數:	59 p.
附註:	Source: Masters Abstracts International, Volume: 53-06.
Contained By:	Masters Abstracts International53-06(E).
標題:	Biogeochemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1526048
ISBN:	9781321340518

Response of ammonium uptake to carbon availability in an agriculturally influenced first order stream.
Meyer, Anna DeForest.

Response of ammonium uptake to carbon availability in an agriculturally influenced first order stream. - 59 p.

Source: Masters Abstracts International, Volume: 53-06.

Thesis (M.S.)--University of New Hampshire, 2014.

This item must not be sold to any third party vendors.

Ammonium dynamics are directly linked to other nitrogen (N) species and the carbon cycle. Nitrification of ammonium can provide an energy source, and assimilatory uptake of ammonium provides a nitrogen source to both heterotrophic and autotrophic organisms. To understand the role of dissolved organic carbon (DOC) as a potential driver of ammonium uptake in headwater streams with high N inputs, Tracer Addition for Spiraling Curve Characterization slug injection experiments were conducted in an agricultural stream under different concentrations of DOC. On all six experiment days there was a strong, positive linear relationship between ammonium concentration and areal uptake. The elevated DOC treatment affected ammonium uptake kinetics infrequently and inconsistently. A decrease in nitrate concentration coincided with the slug injection on each experiment day. Possible mechanisms for the decrease in nitrate include suppression of nitrification and anammox.

ISBN: 9781321340518Subjects--Topical Terms:

545717
Biogeochemistry.

Response of ammonium uptake to carbon availability in an agriculturally influenced first order stream.
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245 1 0 $a Response of ammonium uptake to carbon availability in an agriculturally influenced first order stream.
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500 $a Source: Masters Abstracts International, Volume: 53-06.
500 $a Adviser: William H. McDowell.
502 $a Thesis (M.S.)--University of New Hampshire, 2014.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a Ammonium dynamics are directly linked to other nitrogen (N) species and the carbon cycle. Nitrification of ammonium can provide an energy source, and assimilatory uptake of ammonium provides a nitrogen source to both heterotrophic and autotrophic organisms. To understand the role of dissolved organic carbon (DOC) as a potential driver of ammonium uptake in headwater streams with high N inputs, Tracer Addition for Spiraling Curve Characterization slug injection experiments were conducted in an agricultural stream under different concentrations of DOC. On all six experiment days there was a strong, positive linear relationship between ammonium concentration and areal uptake. The elevated DOC treatment affected ammonium uptake kinetics infrequently and inconsistently. A decrease in nitrate concentration coincided with the slug injection on each experiment day. Possible mechanisms for the decrease in nitrate include suppression of nitrification and anammox.
590 $a School code: 0141.
650 4 $a Biogeochemistry. $3 545717
650 4 $a Water resources management. $3 794747
650 4 $a Environmental science. $3 677245
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