Seasonal variation in gas exchange and chlorophyll index of Palicourea racemosa in an open ombrophilous forest

SUMMARY: Seasonal variation affects understory and canopy tree plants in different ways. Palicourea racemosa is an understory shrub from the Rubiaceae family and is subject to seasonal oscillations of the environment, which can affect plant ecophysiological responses. This species is widely distribu...

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Autores principales:	dosSantos Coêlho,Ester, da Silva Ribeiro,João Everthon, Andrade Figueiredo,Francisco Romário, Pereira Leite,Arliston, Ferreira Melo,Marlenildo, Bandeira de Albuquerque,Manoel
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2021
Materias:	photosynthesis rate physiological responses Rubiaceae understory vegetation water availability
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002021000200177
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spelling	oai:scielo:S0717-920020210002001772021-10-08Seasonal variation in gas exchange and chlorophyll index of Palicourea racemosa in an open ombrophilous forestdosSantos Coêlho,Esterda Silva Ribeiro,João EverthonAndrade Figueiredo,Francisco RomárioPereira Leite,ArlistonFerreira Melo,MarlenildoBandeira de Albuquerque,Manoel photosynthesis rate physiological responses Rubiaceae understory vegetation water availability SUMMARY: Seasonal variation affects understory and canopy tree plants in different ways. Palicourea racemosa is an understory shrub from the Rubiaceae family and is subject to seasonal oscillations of the environment, which can affect plant ecophysiological responses. This species is widely distributed in humid forests from southern Mexico to southeastern Brazil and has broad economic and ecological importance for the regions of occurrence, being used for food, ornamental and traditional medicine purposes. It is of fundamental importance to know ecophysiological responses of this species throughout dry and rainy periods, to understand the dynamics of understory plants in tropical forests. This research aimed at evaluating the effects of seasonality on ecophysiological aspects of P. racemosa at the Mata do Pau-Ferro State Park, municipality of Areia, Paraíba, Brazil. Over ten months, upper canopy structure indices were measured in ten individuals, climatic data were collected and their effects on gas exchange and chlorophyll indices in plants were evaluated. Results showed that the environmental variables correlated with the ecophysiological ones, with a strong association of soil moisture, rainfall and leaf area index of the upper canopy on ecophysiological aspects in P. racemosa plants, indicating that water availability and irradiance affect gas exchanges and photosynthetic pigment content. Except for intrinsic water use efficiency and instantaneous carboxylation efficiency, all ecophysiological variables showed significant differences over the months, showing the influence of seasonality on the ecophysiological responses of P. racemosa.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.42 n.2 20212021-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002021000200177en10.4067/S0717-92002021000200177
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	photosynthesis rate physiological responses Rubiaceae understory vegetation water availability
spellingShingle	photosynthesis rate physiological responses Rubiaceae understory vegetation water availability dosSantos Coêlho,Ester da Silva Ribeiro,João Everthon Andrade Figueiredo,Francisco Romário Pereira Leite,Arliston Ferreira Melo,Marlenildo Bandeira de Albuquerque,Manoel Seasonal variation in gas exchange and chlorophyll index of Palicourea racemosa in an open ombrophilous forest
description	SUMMARY: Seasonal variation affects understory and canopy tree plants in different ways. Palicourea racemosa is an understory shrub from the Rubiaceae family and is subject to seasonal oscillations of the environment, which can affect plant ecophysiological responses. This species is widely distributed in humid forests from southern Mexico to southeastern Brazil and has broad economic and ecological importance for the regions of occurrence, being used for food, ornamental and traditional medicine purposes. It is of fundamental importance to know ecophysiological responses of this species throughout dry and rainy periods, to understand the dynamics of understory plants in tropical forests. This research aimed at evaluating the effects of seasonality on ecophysiological aspects of P. racemosa at the Mata do Pau-Ferro State Park, municipality of Areia, Paraíba, Brazil. Over ten months, upper canopy structure indices were measured in ten individuals, climatic data were collected and their effects on gas exchange and chlorophyll indices in plants were evaluated. Results showed that the environmental variables correlated with the ecophysiological ones, with a strong association of soil moisture, rainfall and leaf area index of the upper canopy on ecophysiological aspects in P. racemosa plants, indicating that water availability and irradiance affect gas exchanges and photosynthetic pigment content. Except for intrinsic water use efficiency and instantaneous carboxylation efficiency, all ecophysiological variables showed significant differences over the months, showing the influence of seasonality on the ecophysiological responses of P. racemosa.
author	dosSantos Coêlho,Ester da Silva Ribeiro,João Everthon Andrade Figueiredo,Francisco Romário Pereira Leite,Arliston Ferreira Melo,Marlenildo Bandeira de Albuquerque,Manoel
author_facet	dosSantos Coêlho,Ester da Silva Ribeiro,João Everthon Andrade Figueiredo,Francisco Romário Pereira Leite,Arliston Ferreira Melo,Marlenildo Bandeira de Albuquerque,Manoel
author_sort	dosSantos Coêlho,Ester
title	Seasonal variation in gas exchange and chlorophyll index of Palicourea racemosa in an open ombrophilous forest
title_short	Seasonal variation in gas exchange and chlorophyll index of Palicourea racemosa in an open ombrophilous forest
title_full	Seasonal variation in gas exchange and chlorophyll index of Palicourea racemosa in an open ombrophilous forest
title_fullStr	Seasonal variation in gas exchange and chlorophyll index of Palicourea racemosa in an open ombrophilous forest
title_full_unstemmed	Seasonal variation in gas exchange and chlorophyll index of Palicourea racemosa in an open ombrophilous forest
title_sort	seasonal variation in gas exchange and chlorophyll index of palicourea racemosa in an open ombrophilous forest
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002021000200177
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Seasonal variation in gas exchange and chlorophyll index of Palicourea racemosa in an open ombrophilous forest

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