Does nitrogen deposition affect soil microfungal diversity and soil N and P dynamics in a high Arctic ecosystem?
Abstract In a high Arctic polar semidesert ecosystem (ambient N deposition c. 0.1 g N m −2 a −1 ), the effects of N enrichment on the diversity of soil microfungi and on N content and availability in organic and mineral soils were determined. Three N (total: 0, 0.5, 5 g N m −2 a −1 ) and two P (tota...
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crwiley:10.1111/j.1529-8817.2003.00793.x 2024-09-09T19:06:09+00:00 Does nitrogen deposition affect soil microfungal diversity and soil N and P dynamics in a high Arctic ecosystem? Robinson, Clare H. Saunders, Philip W. Madan, Nanette J. Janie Pryce‐Miller, E. Pentecost, Allan 2004 http://dx.doi.org/10.1111/j.1529-8817.2003.00793.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1529-8817.2003.00793.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1529-8817.2003.00793.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 10, issue 7, page 1065-1079 ISSN 1354-1013 1365-2486 journal-article 2004 crwiley https://doi.org/10.1111/j.1529-8817.2003.00793.x 2024-07-23T04:15:36Z Abstract In a high Arctic polar semidesert ecosystem (ambient N deposition c. 0.1 g N m −2 a −1 ), the effects of N enrichment on the diversity of soil microfungi and on N content and availability in organic and mineral soils were determined. Three N (total: 0, 0.5, 5 g N m −2 a −1 ) and two P (total 0, 1 g m −2 a −1 ) treatments were applied, since P may limit response to N in this ecosystem. Organic and mineral soils were sampled in June and August in the second year of treatment for microfungi, pH, moisture content, and total N and P. In the third year, soils were resampled for extractable and total N and P. The fungi isolated were typical of high pH soils in the High Arctic and Antarctic. The species richness and diversity of soil microfungi were very low, with ranges as follows: Shannon diversity, 0.56–1.5; richness, 2–6; evenness, 0.79–0.9. There was no significant effect of treatment on the frequency of occurrence of different taxa of soil microfungi. Time of sampling also had no significant impact on fungal assemblages, although different, more diverse communities were isolated from organic, rather than mineral, soils. Nitrate‐N in organic soil decreased significantly when P was added alone, but not when P and N were added together. Addition of 0.5 g N m −2 a −1 , a rate deposition already occurring in Greenland and Iceland, appeared to exceed N demand even when P limitation was relieved. There was no apparent soil acidification as a result of the N treatments. Article in Journal/Newspaper Antarc* Antarctic Arctic Greenland Iceland Shannon Wiley Online Library Antarctic Arctic Greenland Global Change Biology 10 7 1065 1079 |
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Wiley Online Library |
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English |
description |
Abstract In a high Arctic polar semidesert ecosystem (ambient N deposition c. 0.1 g N m −2 a −1 ), the effects of N enrichment on the diversity of soil microfungi and on N content and availability in organic and mineral soils were determined. Three N (total: 0, 0.5, 5 g N m −2 a −1 ) and two P (total 0, 1 g m −2 a −1 ) treatments were applied, since P may limit response to N in this ecosystem. Organic and mineral soils were sampled in June and August in the second year of treatment for microfungi, pH, moisture content, and total N and P. In the third year, soils were resampled for extractable and total N and P. The fungi isolated were typical of high pH soils in the High Arctic and Antarctic. The species richness and diversity of soil microfungi were very low, with ranges as follows: Shannon diversity, 0.56–1.5; richness, 2–6; evenness, 0.79–0.9. There was no significant effect of treatment on the frequency of occurrence of different taxa of soil microfungi. Time of sampling also had no significant impact on fungal assemblages, although different, more diverse communities were isolated from organic, rather than mineral, soils. Nitrate‐N in organic soil decreased significantly when P was added alone, but not when P and N were added together. Addition of 0.5 g N m −2 a −1 , a rate deposition already occurring in Greenland and Iceland, appeared to exceed N demand even when P limitation was relieved. There was no apparent soil acidification as a result of the N treatments. |
format |
Article in Journal/Newspaper |
author |
Robinson, Clare H. Saunders, Philip W. Madan, Nanette J. Janie Pryce‐Miller, E. Pentecost, Allan |
spellingShingle |
Robinson, Clare H. Saunders, Philip W. Madan, Nanette J. Janie Pryce‐Miller, E. Pentecost, Allan Does nitrogen deposition affect soil microfungal diversity and soil N and P dynamics in a high Arctic ecosystem? |
author_facet |
Robinson, Clare H. Saunders, Philip W. Madan, Nanette J. Janie Pryce‐Miller, E. Pentecost, Allan |
author_sort |
Robinson, Clare H. |
title |
Does nitrogen deposition affect soil microfungal diversity and soil N and P dynamics in a high Arctic ecosystem? |
title_short |
Does nitrogen deposition affect soil microfungal diversity and soil N and P dynamics in a high Arctic ecosystem? |
title_full |
Does nitrogen deposition affect soil microfungal diversity and soil N and P dynamics in a high Arctic ecosystem? |
title_fullStr |
Does nitrogen deposition affect soil microfungal diversity and soil N and P dynamics in a high Arctic ecosystem? |
title_full_unstemmed |
Does nitrogen deposition affect soil microfungal diversity and soil N and P dynamics in a high Arctic ecosystem? |
title_sort |
does nitrogen deposition affect soil microfungal diversity and soil n and p dynamics in a high arctic ecosystem? |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1111/j.1529-8817.2003.00793.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1529-8817.2003.00793.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1529-8817.2003.00793.x |
geographic |
Antarctic Arctic Greenland |
geographic_facet |
Antarctic Arctic Greenland |
genre |
Antarc* Antarctic Arctic Greenland Iceland Shannon |
genre_facet |
Antarc* Antarctic Arctic Greenland Iceland Shannon |
op_source |
Global Change Biology volume 10, issue 7, page 1065-1079 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1529-8817.2003.00793.x |
container_title |
Global Change Biology |
container_volume |
10 |
container_issue |
7 |
container_start_page |
1065 |
op_container_end_page |
1079 |
_version_ |
1809820177077895168 |