Pore Water Concentrations of Nitrogen From N-Addition Plots in an Alberta Peatland, 2011-2015
Development of the oil sands has led to increasing atmospheric N deposition, with values as high as 17 kg N ha -1 yr -1 ; regional background levels <2 kg N ha -1 yr -1 . Bogs, being ombrotrophic, may be especially susceptible to increasing N deposition. To examine responses to N deposition, over...
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2019
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dataone:https://pasta.lternet.edu/package/metadata/eml/edi/373/1 2024-06-03T18:46:50+00:00 Pore Water Concentrations of Nitrogen From N-Addition Plots in an Alberta Peatland, 2011-2015 R Kelman Wieder Dale H Vitt Melanie A Vile Jeremy A Graham Jeremy A Hartsock Hope Fillingim Melissa House James C Quinn Kimberli D Scott Meaghan Petix Kelly J McMillen Alberta, Canada, 100 km south of Fort McMurray, Canada ENVELOPE(-112.094,-112.094,55.895,55.895) BEGINDATE: 2011-05-31T00:00:00Z ENDDATE: 2015-08-06T00:00:00Z 2019-04-12T00:00:00Z https://pasta.lternet.edu/package/metadata/eml/edi/373/1 unknown Environmental Data Initiative Villanova Peatland Biogeochemistry Group bogs peatland porewater nitrogen inorganic nitrogen organic nitrogen ammonium nitrate Dataset 2019 dataone:urn:node:EDI 2024-06-03T18:12:03Z Development of the oil sands has led to increasing atmospheric N deposition, with values as high as 17 kg N ha -1 yr -1 ; regional background levels <2 kg N ha -1 yr -1 . Bogs, being ombrotrophic, may be especially susceptible to increasing N deposition. To examine responses to N deposition, over five years, we experimentally applied N (as NH 4 NO 3 ) to a bog near Mariana Lakes, Alberta, at rates of 0, 5, 10, 15, 20, and 25 kg N ha -1 yr -1 , plus controls (no water or N addition). We collected surface pore water from all plots several times a year throughout the 5 year experiment. Porewater NH 4 + -N, NO 3 - -N, and DON concentrations were unaffected by N input in any of the five years (rmANOVA; p = 0.44, 0.37, and 0.82, respectively). We hypothesized that as N deposition increases to a level that exceeds the capacity of the bog vegetation to take up N, net N mineralization in surface peat would be inhibited by higher NH 4 + -N availability, net nitrification would be stimulated by higher NH 4 + -N availability, and concentrations of DIN in porewater at the top of the water table would increase, as DIN bypasses interception by the ground layer vegetation. None of these hypotheses was supported with nitrogen being immediately taken up by vegetation. It is unclear if longer term study would reveal similar responses. Dataset Fort McMurray Environmental Data Initiative (via DataONE) Canada Fort McMurray ENVELOPE(-112.094,-112.094,55.895,55.895) |
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Environmental Data Initiative (via DataONE) |
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language |
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Villanova Peatland Biogeochemistry Group bogs peatland porewater nitrogen inorganic nitrogen organic nitrogen ammonium nitrate |
spellingShingle |
Villanova Peatland Biogeochemistry Group bogs peatland porewater nitrogen inorganic nitrogen organic nitrogen ammonium nitrate R Kelman Wieder Dale H Vitt Melanie A Vile Jeremy A Graham Jeremy A Hartsock Hope Fillingim Melissa House James C Quinn Kimberli D Scott Meaghan Petix Kelly J McMillen Pore Water Concentrations of Nitrogen From N-Addition Plots in an Alberta Peatland, 2011-2015 |
topic_facet |
Villanova Peatland Biogeochemistry Group bogs peatland porewater nitrogen inorganic nitrogen organic nitrogen ammonium nitrate |
description |
Development of the oil sands has led to increasing atmospheric N deposition, with values as high as 17 kg N ha -1 yr -1 ; regional background levels <2 kg N ha -1 yr -1 . Bogs, being ombrotrophic, may be especially susceptible to increasing N deposition. To examine responses to N deposition, over five years, we experimentally applied N (as NH 4 NO 3 ) to a bog near Mariana Lakes, Alberta, at rates of 0, 5, 10, 15, 20, and 25 kg N ha -1 yr -1 , plus controls (no water or N addition). We collected surface pore water from all plots several times a year throughout the 5 year experiment. Porewater NH 4 + -N, NO 3 - -N, and DON concentrations were unaffected by N input in any of the five years (rmANOVA; p = 0.44, 0.37, and 0.82, respectively). We hypothesized that as N deposition increases to a level that exceeds the capacity of the bog vegetation to take up N, net N mineralization in surface peat would be inhibited by higher NH 4 + -N availability, net nitrification would be stimulated by higher NH 4 + -N availability, and concentrations of DIN in porewater at the top of the water table would increase, as DIN bypasses interception by the ground layer vegetation. None of these hypotheses was supported with nitrogen being immediately taken up by vegetation. It is unclear if longer term study would reveal similar responses. |
format |
Dataset |
author |
R Kelman Wieder Dale H Vitt Melanie A Vile Jeremy A Graham Jeremy A Hartsock Hope Fillingim Melissa House James C Quinn Kimberli D Scott Meaghan Petix Kelly J McMillen |
author_facet |
R Kelman Wieder Dale H Vitt Melanie A Vile Jeremy A Graham Jeremy A Hartsock Hope Fillingim Melissa House James C Quinn Kimberli D Scott Meaghan Petix Kelly J McMillen |
author_sort |
R Kelman Wieder |
title |
Pore Water Concentrations of Nitrogen From N-Addition Plots in an Alberta Peatland, 2011-2015 |
title_short |
Pore Water Concentrations of Nitrogen From N-Addition Plots in an Alberta Peatland, 2011-2015 |
title_full |
Pore Water Concentrations of Nitrogen From N-Addition Plots in an Alberta Peatland, 2011-2015 |
title_fullStr |
Pore Water Concentrations of Nitrogen From N-Addition Plots in an Alberta Peatland, 2011-2015 |
title_full_unstemmed |
Pore Water Concentrations of Nitrogen From N-Addition Plots in an Alberta Peatland, 2011-2015 |
title_sort |
pore water concentrations of nitrogen from n-addition plots in an alberta peatland, 2011-2015 |
publisher |
Environmental Data Initiative |
publishDate |
2019 |
url |
https://pasta.lternet.edu/package/metadata/eml/edi/373/1 |
op_coverage |
Alberta, Canada, 100 km south of Fort McMurray, Canada ENVELOPE(-112.094,-112.094,55.895,55.895) BEGINDATE: 2011-05-31T00:00:00Z ENDDATE: 2015-08-06T00:00:00Z |
long_lat |
ENVELOPE(-112.094,-112.094,55.895,55.895) |
geographic |
Canada Fort McMurray |
geographic_facet |
Canada Fort McMurray |
genre |
Fort McMurray |
genre_facet |
Fort McMurray |
_version_ |
1800871753230057472 |