Vascular Root Biomass and N Concentrations at Two Depths in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015
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/368/1 2024-06-03T18:46:50+00:00 Vascular Root Biomass and N Concentrations at Two Depths in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015 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: 2014-05-31T00:00:00Z ENDDATE: 2015-09-23T00:00:00Z 2019-04-12T00:00:00Z https://pasta.lternet.edu/package/metadata/eml/edi/368/1 unknown Environmental Data Initiative Villanova Peatland Biogeochemistry Group root production root biomass bogs peatland nitrogen biomass roots production 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). From 2014-2015, we examined the effects of N addition on root production and nitrogen assimilation in those roots by measuring root biomass at two depths and root production over one and two years. Root biomass in the 0-15 cm and 15-30 cm depth increments in peat increased with increasing N input; the response was similar in the two depth increments. Root production integrated over the top 30 cm of peat increased with increasing N input at a rate of 5.3 g m -2 yr -1 with an increase in N input of 1 kg N ha -1 yr -1 . Water addition alone had no significant effect on root biomass (p > 0.72) or root production. Given the rather consistent finding increasing N deposition stimulates aboveground vascular plant biomass and production, and our results that root biomass and production at Mariana Lakes Bog are stimulated as well, further work on belowground responses seems warranted. Dataset Fort McMurray Environmental Data Initiative (via DataONE) Canada Fort McMurray ENVELOPE(-112.094,-112.094,55.895,55.895) |
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Open Polar |
collection |
Environmental Data Initiative (via DataONE) |
op_collection_id |
dataone:urn:node:EDI |
language |
unknown |
topic |
Villanova Peatland Biogeochemistry Group root production root biomass bogs peatland nitrogen biomass roots production |
spellingShingle |
Villanova Peatland Biogeochemistry Group root production root biomass bogs peatland nitrogen biomass roots production 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 Vascular Root Biomass and N Concentrations at Two Depths in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015 |
topic_facet |
Villanova Peatland Biogeochemistry Group root production root biomass bogs peatland nitrogen biomass roots production |
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). From 2014-2015, we examined the effects of N addition on root production and nitrogen assimilation in those roots by measuring root biomass at two depths and root production over one and two years. Root biomass in the 0-15 cm and 15-30 cm depth increments in peat increased with increasing N input; the response was similar in the two depth increments. Root production integrated over the top 30 cm of peat increased with increasing N input at a rate of 5.3 g m -2 yr -1 with an increase in N input of 1 kg N ha -1 yr -1 . Water addition alone had no significant effect on root biomass (p > 0.72) or root production. Given the rather consistent finding increasing N deposition stimulates aboveground vascular plant biomass and production, and our results that root biomass and production at Mariana Lakes Bog are stimulated as well, further work on belowground responses seems warranted. |
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 |
Vascular Root Biomass and N Concentrations at Two Depths in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015 |
title_short |
Vascular Root Biomass and N Concentrations at Two Depths in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015 |
title_full |
Vascular Root Biomass and N Concentrations at Two Depths in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015 |
title_fullStr |
Vascular Root Biomass and N Concentrations at Two Depths in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015 |
title_full_unstemmed |
Vascular Root Biomass and N Concentrations at Two Depths in an Alberta Peatland Subjected to Increasing Nitrogen Deposition, 2014-2015 |
title_sort |
vascular root biomass and n concentrations at two depths in an alberta peatland subjected to increasing nitrogen deposition, 2014-2015 |
publisher |
Environmental Data Initiative |
publishDate |
2019 |
url |
https://pasta.lternet.edu/package/metadata/eml/edi/368/1 |
op_coverage |
Alberta, Canada, 100 km south of Fort McMurray, Canada ENVELOPE(-112.094,-112.094,55.895,55.895) BEGINDATE: 2014-05-31T00:00:00Z ENDDATE: 2015-09-23T00:00:00Z |
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_ |
1800871754210476032 |