Growth and photosynthetic use efficiency of nitrogen and phosphorus in saplings of amazonian tree species
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional do INPA |
Texto Completo: | https://repositorio.inpa.gov.br/handle/1/15174 |
Resumo: | In the Amazon Rainforest, photosynthesis and tree growth may be limited by the availability of nutrient. Thus, the objectives of this study were to determine the effect of leaf N and P content on photosynthesis, and to assess plant growth in response to understory light in ten tree species in Central Amazonia. Data were collected in January 2008. The photosynthetic capacity (Apot) of leaves positively increased with foliar N and P content, but it was only responsive to P use efficiency. The contents of N and P increased as understory irradiance increased. In addition, we found a positive relationship between N content and the N/P ratio. On the contrary, the relationship between P content and the N/P ratio was negative. Specific leaf area was negatively correlated with N and P. N use efficiency declined with increases with the N/P ratio, but the N/P ratio had no significant effect on P use efficiency. Growth in diameter increased with understory light. In conclusion, saplings were highly sensitive to variations in light intensity, and P was used with high efficiency in studied species. |
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Mendes, Keila RêgoMarenco, R. A.Magalhães, Nilvanda dos Santos2020-05-07T14:09:18Z2020-05-07T14:09:18Z2013https://repositorio.inpa.gov.br/handle/1/1517410.1590/S0100-67622013000400014In the Amazon Rainforest, photosynthesis and tree growth may be limited by the availability of nutrient. Thus, the objectives of this study were to determine the effect of leaf N and P content on photosynthesis, and to assess plant growth in response to understory light in ten tree species in Central Amazonia. Data were collected in January 2008. The photosynthetic capacity (Apot) of leaves positively increased with foliar N and P content, but it was only responsive to P use efficiency. The contents of N and P increased as understory irradiance increased. In addition, we found a positive relationship between N content and the N/P ratio. On the contrary, the relationship between P content and the N/P ratio was negative. Specific leaf area was negatively correlated with N and P. N use efficiency declined with increases with the N/P ratio, but the N/P ratio had no significant effect on P use efficiency. Growth in diameter increased with understory light. In conclusion, saplings were highly sensitive to variations in light intensity, and P was used with high efficiency in studied species.Volume 37, Número 4, Pags. 707-716Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessGrowth and photosynthetic use efficiency of nitrogen and phosphorus in saplings of amazonian tree speciesCrescimento e eficiência fotossintética de uso do nitrogênio e fósforo em espécies florestais da amazônia na fase juvenilinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleRevista Árvoreporreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALartigo-inpa.pdfapplication/pdf363285https://repositorio.inpa.gov.br/bitstream/1/15174/1/artigo-inpa.pdf55518e8667e27e0fd908f82e5dad3e4cMD51CC-LICENSElicense_rdfapplication/octet-stream914https://repositorio.inpa.gov.br/bitstream/1/15174/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD521/151742020-07-14 10:55:59.284oai:repositorio:1/15174Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-07-14T14:55:59Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false |
dc.title.pt_BR.fl_str_mv |
Growth and photosynthetic use efficiency of nitrogen and phosphorus in saplings of amazonian tree species |
dc.title.alternative.pt_BR.fl_str_mv |
Crescimento e eficiência fotossintética de uso do nitrogênio e fósforo em espécies florestais da amazônia na fase juvenil |
title |
Growth and photosynthetic use efficiency of nitrogen and phosphorus in saplings of amazonian tree species |
spellingShingle |
Growth and photosynthetic use efficiency of nitrogen and phosphorus in saplings of amazonian tree species Mendes, Keila Rêgo |
title_short |
Growth and photosynthetic use efficiency of nitrogen and phosphorus in saplings of amazonian tree species |
title_full |
Growth and photosynthetic use efficiency of nitrogen and phosphorus in saplings of amazonian tree species |
title_fullStr |
Growth and photosynthetic use efficiency of nitrogen and phosphorus in saplings of amazonian tree species |
title_full_unstemmed |
Growth and photosynthetic use efficiency of nitrogen and phosphorus in saplings of amazonian tree species |
title_sort |
Growth and photosynthetic use efficiency of nitrogen and phosphorus in saplings of amazonian tree species |
author |
Mendes, Keila Rêgo |
author_facet |
Mendes, Keila Rêgo Marenco, R. A. Magalhães, Nilvanda dos Santos |
author_role |
author |
author2 |
Marenco, R. A. Magalhães, Nilvanda dos Santos |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Mendes, Keila Rêgo Marenco, R. A. Magalhães, Nilvanda dos Santos |
description |
In the Amazon Rainforest, photosynthesis and tree growth may be limited by the availability of nutrient. Thus, the objectives of this study were to determine the effect of leaf N and P content on photosynthesis, and to assess plant growth in response to understory light in ten tree species in Central Amazonia. Data were collected in January 2008. The photosynthetic capacity (Apot) of leaves positively increased with foliar N and P content, but it was only responsive to P use efficiency. The contents of N and P increased as understory irradiance increased. In addition, we found a positive relationship between N content and the N/P ratio. On the contrary, the relationship between P content and the N/P ratio was negative. Specific leaf area was negatively correlated with N and P. N use efficiency declined with increases with the N/P ratio, but the N/P ratio had no significant effect on P use efficiency. Growth in diameter increased with understory light. In conclusion, saplings were highly sensitive to variations in light intensity, and P was used with high efficiency in studied species. |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013 |
dc.date.accessioned.fl_str_mv |
2020-05-07T14:09:18Z |
dc.date.available.fl_str_mv |
2020-05-07T14:09:18Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://repositorio.inpa.gov.br/handle/1/15174 |
dc.identifier.doi.none.fl_str_mv |
10.1590/S0100-67622013000400014 |
url |
https://repositorio.inpa.gov.br/handle/1/15174 |
identifier_str_mv |
10.1590/S0100-67622013000400014 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.ispartof.pt_BR.fl_str_mv |
Volume 37, Número 4, Pags. 707-716 |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Revista Árvore |
publisher.none.fl_str_mv |
Revista Árvore |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional do INPA instname:Instituto Nacional de Pesquisas da Amazônia (INPA) instacron:INPA |
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