Nitrogen fixation assessment in a legume-dominant alpine community: comparison of different reference species using the 15N isotope dilution technique
In arctic and alpine environments the highest biologically fixed nitrogen inputs are measured in the presence of leguminous plants, with a maximum annual nitrogen input recorded of about 10 kg ha-1 year-1. Among the high elevation legumes, Trifolium alpinum spreads over many southern European mounta...
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ftunivtorino:oai:iris.unito.it:2318/152445 2023-10-29T02:34:34+01:00 Nitrogen fixation assessment in a legume-dominant alpine community: comparison of different reference species using the 15N isotope dilution technique LONATI, MICHELE PROBO, MASSIMILIANO GORLIER, Alessandra LOMBARDI, Giampiero Michele Lonati Massimiliano Probo Alessandra Gorlier Giampiero Lombardi 2015 ELETTRONICO http://hdl.handle.net/2318/152445 https://doi.org/10.1007/s00035-014-0143-x http://www.springer.com/-/6/1b34eff0c5434512bef4d4c8b998cba9 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000352068000006 volume:125 firstpage:51 lastpage:58 numberofpages:8 journal:ALPINE BOTANY http://hdl.handle.net/2318/152445 doi:10.1007/s00035-014-0143-x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84939949855 http://www.springer.com/-/6/1b34eff0c5434512bef4d4c8b998cba9 info:eu-repo/semantics/openAccess alpine grassland nitrogen cycle reference specie Trifolium alpinum info:eu-repo/semantics/article 2015 ftunivtorino https://doi.org/10.1007/s00035-014-0143-x 2023-10-03T22:21:34Z In arctic and alpine environments the highest biologically fixed nitrogen inputs are measured in the presence of leguminous plants, with a maximum annual nitrogen input recorded of about 10 kg ha-1 year-1. Among the high elevation legumes, Trifolium alpinum spreads over many southern European mountain grasslands as a dominant or co-dominant species, accounting for 30-40% or more of total above-ground phytomass. We estimated the amount of symbiotic nitrogen fixation in T. alpinum-dominant communities using the 15N isotope dilution technique and comparing the calculations derived from different non-fixing reference species. The estimated percentage of nitrogen derived from the atmosphere varied significantly depending on the reference species used and they were comparable to the ones reported in literature. No differences were detected among years. In the community studied, the use of one reference species instead of another can yield differences of more than 10 kg ha-1 year-1, which may represent a considerable difference in the estimation of symbiotic nitrogen fixation in alpine ecosystems. Taking a very precautionary approach and using the grass Nardus stricta as the reference species we estimated 21.9 kg ha-1 year-1of nitrogen fixation in T. alpinum-dominant communities. This quantity of nitrogen is the highest ever estimated in a natural alpine grassland and it is related to the high annual above-ground phytomass of T. alpinum. Article in Journal/Newspaper Arctic Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) Alpine Botany 125 1 51 58 |
institution |
Open Polar |
collection |
Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) |
op_collection_id |
ftunivtorino |
language |
English |
topic |
alpine grassland nitrogen cycle reference specie Trifolium alpinum |
spellingShingle |
alpine grassland nitrogen cycle reference specie Trifolium alpinum LONATI, MICHELE PROBO, MASSIMILIANO GORLIER, Alessandra LOMBARDI, Giampiero Nitrogen fixation assessment in a legume-dominant alpine community: comparison of different reference species using the 15N isotope dilution technique |
topic_facet |
alpine grassland nitrogen cycle reference specie Trifolium alpinum |
description |
In arctic and alpine environments the highest biologically fixed nitrogen inputs are measured in the presence of leguminous plants, with a maximum annual nitrogen input recorded of about 10 kg ha-1 year-1. Among the high elevation legumes, Trifolium alpinum spreads over many southern European mountain grasslands as a dominant or co-dominant species, accounting for 30-40% or more of total above-ground phytomass. We estimated the amount of symbiotic nitrogen fixation in T. alpinum-dominant communities using the 15N isotope dilution technique and comparing the calculations derived from different non-fixing reference species. The estimated percentage of nitrogen derived from the atmosphere varied significantly depending on the reference species used and they were comparable to the ones reported in literature. No differences were detected among years. In the community studied, the use of one reference species instead of another can yield differences of more than 10 kg ha-1 year-1, which may represent a considerable difference in the estimation of symbiotic nitrogen fixation in alpine ecosystems. Taking a very precautionary approach and using the grass Nardus stricta as the reference species we estimated 21.9 kg ha-1 year-1of nitrogen fixation in T. alpinum-dominant communities. This quantity of nitrogen is the highest ever estimated in a natural alpine grassland and it is related to the high annual above-ground phytomass of T. alpinum. |
author2 |
Michele Lonati Massimiliano Probo Alessandra Gorlier Giampiero Lombardi |
format |
Article in Journal/Newspaper |
author |
LONATI, MICHELE PROBO, MASSIMILIANO GORLIER, Alessandra LOMBARDI, Giampiero |
author_facet |
LONATI, MICHELE PROBO, MASSIMILIANO GORLIER, Alessandra LOMBARDI, Giampiero |
author_sort |
LONATI, MICHELE |
title |
Nitrogen fixation assessment in a legume-dominant alpine community: comparison of different reference species using the 15N isotope dilution technique |
title_short |
Nitrogen fixation assessment in a legume-dominant alpine community: comparison of different reference species using the 15N isotope dilution technique |
title_full |
Nitrogen fixation assessment in a legume-dominant alpine community: comparison of different reference species using the 15N isotope dilution technique |
title_fullStr |
Nitrogen fixation assessment in a legume-dominant alpine community: comparison of different reference species using the 15N isotope dilution technique |
title_full_unstemmed |
Nitrogen fixation assessment in a legume-dominant alpine community: comparison of different reference species using the 15N isotope dilution technique |
title_sort |
nitrogen fixation assessment in a legume-dominant alpine community: comparison of different reference species using the 15n isotope dilution technique |
publishDate |
2015 |
url |
http://hdl.handle.net/2318/152445 https://doi.org/10.1007/s00035-014-0143-x http://www.springer.com/-/6/1b34eff0c5434512bef4d4c8b998cba9 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000352068000006 volume:125 firstpage:51 lastpage:58 numberofpages:8 journal:ALPINE BOTANY http://hdl.handle.net/2318/152445 doi:10.1007/s00035-014-0143-x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84939949855 http://www.springer.com/-/6/1b34eff0c5434512bef4d4c8b998cba9 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00035-014-0143-x |
container_title |
Alpine Botany |
container_volume |
125 |
container_issue |
1 |
container_start_page |
51 |
op_container_end_page |
58 |
_version_ |
1781057213087875072 |