High nitrogen contribution by Gunnera magellanica and nitrogen transfer by mycorrhizas drive an extraordinarily fast primary succession in sub‐Antarctic Chile
Summary Chronosequences at the forefront of retreating glaciers provide information about colonization rates of bare surfaces. In the northern hemisphere, forest development can take centuries, with rates often limited by low nutrient availability. By contrast, in front of the retreating Pia Glacier...
Published in: | New Phytologist |
---|---|
Main Authors: | , , , , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2019
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/nph.15838 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15838 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.15838 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15838 |
id |
crwiley:10.1111/nph.15838 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/nph.15838 2024-09-15T17:46:21+00:00 High nitrogen contribution by Gunnera magellanica and nitrogen transfer by mycorrhizas drive an extraordinarily fast primary succession in sub‐Antarctic Chile Benavent‐González, Alberto Raggio, José Villagra, Johana Blanquer, José Manuel Pintado, Ana Rozzi, Ricardo Green, T. G. Allan Sancho, Leopoldo G. Ministerio de Economía y Competitividad 2019 http://dx.doi.org/10.1111/nph.15838 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15838 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.15838 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15838 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor New Phytologist volume 223, issue 2, page 661-674 ISSN 0028-646X 1469-8137 journal-article 2019 crwiley https://doi.org/10.1111/nph.15838 2024-09-03T04:25:26Z Summary Chronosequences at the forefront of retreating glaciers provide information about colonization rates of bare surfaces. In the northern hemisphere, forest development can take centuries, with rates often limited by low nutrient availability. By contrast, in front of the retreating Pia Glacier (Tierra del Fuego, Chile), a Nothofagus forest is in place after only 34 yr of development, while total soil nitrogen (N) increased from near zero to 1.5%, suggesting a strong input of this nutrient. We measured N‐fixation rates, carbon fluxes, leaf N and phosphorus contents and leaf δ 15 N in the dominant plants, including the herb Gunnera magellanica , which is endosymbiotically associated with a cyanobacterium, in order to investigate the role of N‐fixing and mycorrhizal symbionts in N‐budgets during successional transition. G. magellanica presented some of the highest nitrogenase activities yet reported (potential maximal contribution of 300 kg N ha −1 yr −1 ). Foliar δ 15 N results support the framework of a highly efficient N‐uptake and transfer system based on mycorrhizas, with c . 80% of N taken up by the mycorrhizas potentially transferred to the host plant. Our results suggest the symbiosis of G. magellanica with cyanobacteria, and trees and shrubs with mycorrhizas, to be the key processes driving this rapid succession. Article in Journal/Newspaper Antarc* Antarctic Tierra del Fuego Wiley Online Library New Phytologist 223 2 661 674 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Summary Chronosequences at the forefront of retreating glaciers provide information about colonization rates of bare surfaces. In the northern hemisphere, forest development can take centuries, with rates often limited by low nutrient availability. By contrast, in front of the retreating Pia Glacier (Tierra del Fuego, Chile), a Nothofagus forest is in place after only 34 yr of development, while total soil nitrogen (N) increased from near zero to 1.5%, suggesting a strong input of this nutrient. We measured N‐fixation rates, carbon fluxes, leaf N and phosphorus contents and leaf δ 15 N in the dominant plants, including the herb Gunnera magellanica , which is endosymbiotically associated with a cyanobacterium, in order to investigate the role of N‐fixing and mycorrhizal symbionts in N‐budgets during successional transition. G. magellanica presented some of the highest nitrogenase activities yet reported (potential maximal contribution of 300 kg N ha −1 yr −1 ). Foliar δ 15 N results support the framework of a highly efficient N‐uptake and transfer system based on mycorrhizas, with c . 80% of N taken up by the mycorrhizas potentially transferred to the host plant. Our results suggest the symbiosis of G. magellanica with cyanobacteria, and trees and shrubs with mycorrhizas, to be the key processes driving this rapid succession. |
author2 |
Ministerio de Economía y Competitividad |
format |
Article in Journal/Newspaper |
author |
Benavent‐González, Alberto Raggio, José Villagra, Johana Blanquer, José Manuel Pintado, Ana Rozzi, Ricardo Green, T. G. Allan Sancho, Leopoldo G. |
spellingShingle |
Benavent‐González, Alberto Raggio, José Villagra, Johana Blanquer, José Manuel Pintado, Ana Rozzi, Ricardo Green, T. G. Allan Sancho, Leopoldo G. High nitrogen contribution by Gunnera magellanica and nitrogen transfer by mycorrhizas drive an extraordinarily fast primary succession in sub‐Antarctic Chile |
author_facet |
Benavent‐González, Alberto Raggio, José Villagra, Johana Blanquer, José Manuel Pintado, Ana Rozzi, Ricardo Green, T. G. Allan Sancho, Leopoldo G. |
author_sort |
Benavent‐González, Alberto |
title |
High nitrogen contribution by Gunnera magellanica and nitrogen transfer by mycorrhizas drive an extraordinarily fast primary succession in sub‐Antarctic Chile |
title_short |
High nitrogen contribution by Gunnera magellanica and nitrogen transfer by mycorrhizas drive an extraordinarily fast primary succession in sub‐Antarctic Chile |
title_full |
High nitrogen contribution by Gunnera magellanica and nitrogen transfer by mycorrhizas drive an extraordinarily fast primary succession in sub‐Antarctic Chile |
title_fullStr |
High nitrogen contribution by Gunnera magellanica and nitrogen transfer by mycorrhizas drive an extraordinarily fast primary succession in sub‐Antarctic Chile |
title_full_unstemmed |
High nitrogen contribution by Gunnera magellanica and nitrogen transfer by mycorrhizas drive an extraordinarily fast primary succession in sub‐Antarctic Chile |
title_sort |
high nitrogen contribution by gunnera magellanica and nitrogen transfer by mycorrhizas drive an extraordinarily fast primary succession in sub‐antarctic chile |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/nph.15838 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15838 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.15838 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15838 |
genre |
Antarc* Antarctic Tierra del Fuego |
genre_facet |
Antarc* Antarctic Tierra del Fuego |
op_source |
New Phytologist volume 223, issue 2, page 661-674 ISSN 0028-646X 1469-8137 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/nph.15838 |
container_title |
New Phytologist |
container_volume |
223 |
container_issue |
2 |
container_start_page |
661 |
op_container_end_page |
674 |
_version_ |
1810494402151317504 |