Nitrogen Mineralization and Microbial Biomass Nitrogen Dynamics in Three Alpine Tundra Communities
Abstract The alpine tundra of the Colorado Front Range supports a variety of plant communities whose distribution corresponds to their topographic position. Our objectives were to: (i) determine patterns in net N mineralization and microbial N pools among three communities, Kobresia, Acomastylis , a...
Published in: | Soil Science Society of America Journal |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
1995
|
Subjects: | |
Online Access: | http://dx.doi.org/10.2136/sssaj1995.03615995005900040012x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2136%2Fsssaj1995.03615995005900040012x http://onlinelibrary.wiley.com/wol1/doi/10.2136/sssaj1995.03615995005900040012x/fullpdf |
id |
crwiley:10.2136/sssaj1995.03615995005900040012x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.2136/sssaj1995.03615995005900040012x 2023-12-03T10:31:21+01:00 Nitrogen Mineralization and Microbial Biomass Nitrogen Dynamics in Three Alpine Tundra Communities Fisk, Melany C. Schmidt, Steven K. 1995 http://dx.doi.org/10.2136/sssaj1995.03615995005900040012x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2136%2Fsssaj1995.03615995005900040012x http://onlinelibrary.wiley.com/wol1/doi/10.2136/sssaj1995.03615995005900040012x/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Soil Science Society of America Journal volume 59, issue 4, page 1036-1043 ISSN 0361-5995 1435-0661 Soil Science journal-article 1995 crwiley https://doi.org/10.2136/sssaj1995.03615995005900040012x 2023-11-09T14:25:44Z Abstract The alpine tundra of the Colorado Front Range supports a variety of plant communities whose distribution corresponds to their topographic position. Our objectives were to: (i) determine patterns in net N mineralization and microbial N pools among three communities, Kobresia, Acomastylis , and Carex meadows, that span a topographic gradient, and (ii) relate any patterns to soil microclimate differences among these communities. Average yearly net N mineralization rates, measured with an in situ core incubation technique, were 1.2 g N m −2 in 1991 and 1.0 g N m −2 in 1992. No differences were detected in yearly N mineralization rates among the three communities; however, net nitrification and other soil properties were found to differ among communities. Net N mineralization rates and microbial N showed strong temporal variation, and this variation was related to different variables for each community. Seasonal variation in N mineralization was related to soil water and microbial N in Kobresia meadows, to soil temperature and microbial N in Acomastylis meadows, and to soil water and temperature in Carex meadows. Seasonal changes in microbial N were related to soil water in Kobresia and Acomastylis meadows. Large fluctuations in microbial N indicate that periodic losses from the microbial pool may be important to N availability in this alpine tundra site. Article in Journal/Newspaper Tundra Wiley Online Library (via Crossref) Soil Science Society of America Journal 59 4 1036 1043 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Soil Science |
spellingShingle |
Soil Science Fisk, Melany C. Schmidt, Steven K. Nitrogen Mineralization and Microbial Biomass Nitrogen Dynamics in Three Alpine Tundra Communities |
topic_facet |
Soil Science |
description |
Abstract The alpine tundra of the Colorado Front Range supports a variety of plant communities whose distribution corresponds to their topographic position. Our objectives were to: (i) determine patterns in net N mineralization and microbial N pools among three communities, Kobresia, Acomastylis , and Carex meadows, that span a topographic gradient, and (ii) relate any patterns to soil microclimate differences among these communities. Average yearly net N mineralization rates, measured with an in situ core incubation technique, were 1.2 g N m −2 in 1991 and 1.0 g N m −2 in 1992. No differences were detected in yearly N mineralization rates among the three communities; however, net nitrification and other soil properties were found to differ among communities. Net N mineralization rates and microbial N showed strong temporal variation, and this variation was related to different variables for each community. Seasonal variation in N mineralization was related to soil water and microbial N in Kobresia meadows, to soil temperature and microbial N in Acomastylis meadows, and to soil water and temperature in Carex meadows. Seasonal changes in microbial N were related to soil water in Kobresia and Acomastylis meadows. Large fluctuations in microbial N indicate that periodic losses from the microbial pool may be important to N availability in this alpine tundra site. |
format |
Article in Journal/Newspaper |
author |
Fisk, Melany C. Schmidt, Steven K. |
author_facet |
Fisk, Melany C. Schmidt, Steven K. |
author_sort |
Fisk, Melany C. |
title |
Nitrogen Mineralization and Microbial Biomass Nitrogen Dynamics in Three Alpine Tundra Communities |
title_short |
Nitrogen Mineralization and Microbial Biomass Nitrogen Dynamics in Three Alpine Tundra Communities |
title_full |
Nitrogen Mineralization and Microbial Biomass Nitrogen Dynamics in Three Alpine Tundra Communities |
title_fullStr |
Nitrogen Mineralization and Microbial Biomass Nitrogen Dynamics in Three Alpine Tundra Communities |
title_full_unstemmed |
Nitrogen Mineralization and Microbial Biomass Nitrogen Dynamics in Three Alpine Tundra Communities |
title_sort |
nitrogen mineralization and microbial biomass nitrogen dynamics in three alpine tundra communities |
publisher |
Wiley |
publishDate |
1995 |
url |
http://dx.doi.org/10.2136/sssaj1995.03615995005900040012x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2136%2Fsssaj1995.03615995005900040012x http://onlinelibrary.wiley.com/wol1/doi/10.2136/sssaj1995.03615995005900040012x/fullpdf |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Soil Science Society of America Journal volume 59, issue 4, page 1036-1043 ISSN 0361-5995 1435-0661 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.2136/sssaj1995.03615995005900040012x |
container_title |
Soil Science Society of America Journal |
container_volume |
59 |
container_issue |
4 |
container_start_page |
1036 |
op_container_end_page |
1043 |
_version_ |
1784257611255775232 |