Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRPE |
Texto Completo: | http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/9290 |
Resumo: | Seasonally dry tropical forest plants are susceptible to the cavitation of their pots, both in leaves and in the wood, having a greater tension in the water column and managing a trade-off between efficiency and hydraulic safety, which is reflected in the density of wood and structure of the xylem. However, the interrelationship between biological and hydraulic parameters is complex and little explored, and this correlation is essential for the best compression of drought tolerance. The objective of this work was to test the hypothesis that plants in the semiarid region have different mechanisms and tolerance to drought as a function of wood density. The anatomical, phenological and physiological characteristics of four woody species from the caatinga were analyzed, belonging to two groups, two with high wood density (HWD) and two with low wood density (LWD). The study was carried out in a caatinga area, semiarid region of Brazil, where monthly data were collected, for one year, on phenology, xylem water potential and stomatal conductance. In addition, the leaves and branches were performed to analyze the anatomical structure. The R software was used on the RStudio v 1.1.46 - 2009-2018 and SigmaPlot version 14 platform, for statistical analysis and graphics production. As expected, the density of the wood along with the phenology, anatomy and physiology was crucial to understand the goals of efficiency and hydraulic safety. LWD species class a preventive strategy, while HWD species were more tolerant to drought. As a preventive way, as BDM species lost as leaves before starting the dry season, potential hydraulic conductivity dissipation 66.78% higher than HWD species, as well as higher stomatal density (24.81%). However, LWD species were 54.18% more vulnerable to hydraulic failures than HWD species. The HWD species anatomically more resistant leaves, with the presence of gelatinous fibers next to a sclerenchyma sheath specific to a central rib, not being observed in LWD species. These data indicate that HWD species have a greater tolerance to drought because they have a more resistant hydraulic architecture. On the other hand, as LWD species use preventive strategies, maintaining their high water potential to prevent the collapse of the hydraulic system during the dry period. Based on the results, an interrelation of biological and hydraulic factors determines the plant's drought performance as a function of the functional group, demonstrating that adaptive groups may differ depending on the drought |
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LIMA, André Luiz Alves deSOUZA, Eduardo Soares deSOARES, Arlete AparecidaFERREIRA, Clébio Pereirahttp://lattes.cnpq.br/6758112022735043BRITO, Nielson Dinivan da Silva2023-08-09T21:39:32Z2021-02-24BRITO, Nielson Dinivan da Silva. Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática. 2021. 45 f. Dissertação (Programa de Pós-Graduação em Produção Vegetal) - Universidade Federal Rural de Pernambuco, Serra Talhada.http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/9290Seasonally dry tropical forest plants are susceptible to the cavitation of their pots, both in leaves and in the wood, having a greater tension in the water column and managing a trade-off between efficiency and hydraulic safety, which is reflected in the density of wood and structure of the xylem. However, the interrelationship between biological and hydraulic parameters is complex and little explored, and this correlation is essential for the best compression of drought tolerance. The objective of this work was to test the hypothesis that plants in the semiarid region have different mechanisms and tolerance to drought as a function of wood density. The anatomical, phenological and physiological characteristics of four woody species from the caatinga were analyzed, belonging to two groups, two with high wood density (HWD) and two with low wood density (LWD). The study was carried out in a caatinga area, semiarid region of Brazil, where monthly data were collected, for one year, on phenology, xylem water potential and stomatal conductance. In addition, the leaves and branches were performed to analyze the anatomical structure. The R software was used on the RStudio v 1.1.46 - 2009-2018 and SigmaPlot version 14 platform, for statistical analysis and graphics production. As expected, the density of the wood along with the phenology, anatomy and physiology was crucial to understand the goals of efficiency and hydraulic safety. LWD species class a preventive strategy, while HWD species were more tolerant to drought. As a preventive way, as BDM species lost as leaves before starting the dry season, potential hydraulic conductivity dissipation 66.78% higher than HWD species, as well as higher stomatal density (24.81%). However, LWD species were 54.18% more vulnerable to hydraulic failures than HWD species. The HWD species anatomically more resistant leaves, with the presence of gelatinous fibers next to a sclerenchyma sheath specific to a central rib, not being observed in LWD species. These data indicate that HWD species have a greater tolerance to drought because they have a more resistant hydraulic architecture. On the other hand, as LWD species use preventive strategies, maintaining their high water potential to prevent the collapse of the hydraulic system during the dry period. Based on the results, an interrelation of biological and hydraulic factors determines the plant's drought performance as a function of the functional group, demonstrating that adaptive groups may differ depending on the droughtPlantas de florestas tropicais sazonalmente secas são susceptíveis à cavitação dos seus vasos, tanto em folhas quanto no lenho, tendo de suportar uma maior tensão na coluna de água e gerenciando um trade-off entre eficiência e segurança hidráulica, que se reflete na densidade de madeira e estrutura do xilema. Entretanto a inter-relação entre parâmetros biológicos e hidráulicos é complexo e pouco explorado, sendo essa correlação essencial para melhor compreender as estratégias de tolerância a seca. Objetivou-se com este trabalho testar a hipótese que plantas do semiárido apresentam diferentes mecanismos e estratégias de tolerância a seca em função da densidade de madeira. Foram analisadas características anatômicas, fenológicas e fisiológicas de quatro espécies lenhosas da Caatinga, pertencentes a dois grupos funcionais, sendo duas de alta densidade de madeira (ADM) e duas de baixa densidade de madeira (BDM). O estudo foi desenvolvido em uma área de Caatinga, semiárido do Brasil, onde foram coletados dados mensais, por um ano, da fenologia, potencial hídrico do xilema e condutância estomática. Além disso, amostras de folhas e galhos foram realizadas para análise da estrutura anatômica. Foi utilizado o software R, na plataforma do RStudio v 1.1.46 – 2009-2018 e SigmaPlot versão 14, para análise estatística e produção de gráficos. Assim como previsto, a densidade da madeira juntamente à fenologia, anatomia e fisiologia foi determinante para se compreender as estratégias de eficiência e segurança hidráulica. As espécies BDM apresentaram uma estratégia preventiva, enquanto as espécies ADM foram mais tolerantes à seca. Como forma preventiva, as espécies BDM perderam as folhas antes de iniciar a estação seca, apresentaram condutividade hidráulica potencial 66,78% maior que espécies ADM, bem como maior densidade estomática (24,81%). Entretanto, espécies BDM foram 54,18% mais vulneráveis a falhas hidráulicas do que espécies ADM. As espécies ADM apresentaram folhas anatomicamente mais resistentes, com presença de fibras gelatinosas junto a uma bainha esclerenquimática circundante a nervura central, não sendo observado em espécies BDM. Estes dados indicam que espécies ADM possuem uma maior tolerância a seca por possuir uma arquitetura hidráulica mais resistente. Por outro lado, as espécies BDM usam de estratégias preventivas, mantendo seu potencial hídrico elevado para evitar o colapso do sistema hidráulico durante o período seco. Com base nesses resultados, a inter-relação de fatores biológicos e hidráulicos determinam o desempenho da planta à seca em função do grupo funcional, demostrando que grupos funcionais distintos podem apresentar estratégias diferentes em função da seca.Submitted by (ana.araujo@ufrpe.br) on 2023-08-09T21:39:32Z No. of bitstreams: 1 Nielson Dinivan da Silva Brito.pdf: 1908725 bytes, checksum: c6772fc6c3d0b1d6dbb918a9b53c4e4f (MD5)Made available in DSpace on 2023-08-09T21:39:32Z (GMT). No. of bitstreams: 1 Nielson Dinivan da Silva Brito.pdf: 1908725 bytes, checksum: c6772fc6c3d0b1d6dbb918a9b53c4e4f (MD5) Previous issue date: 2021-02-24Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESapplication/pdfporUniversidade Federal Rural de PernambucoPrograma de Pós-Graduação em Produção VegetalUFRPEBrasilUnidade Acadêmica de Serra TalhadaSemiáridoCaatingaVegetação lenhosaAnatomia vegetalDensidade da madeiraFenologiaPotencial hídricoSazonalidadeFITOTECNIA::MELHORAMENTO VEGETALEstratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climáticainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-1747323715939935130600600600600-696890503755266288426156072994701319672075167498588264571info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRPEinstname:Universidade Federal Rural de Pernambuco (UFRPE)instacron:UFRPEORIGINALNielson Dinivan da Silva Brito.pdfNielson Dinivan da Silva Brito.pdfapplication/pdf1908725http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/9290/2/Nielson+Dinivan+da+Silva+Brito.pdfc6772fc6c3d0b1d6dbb918a9b53c4e4fMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82165http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/9290/1/license.txtbd3efa91386c1718a7f26a329fdcb468MD51tede2/92902023-08-09 18:39:32.32oai:tede2: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Biblioteca Digital de Teses e Dissertaçõeshttp://www.tede2.ufrpe.br:8080/tede/PUBhttp://www.tede2.ufrpe.br:8080/oai/requestbdtd@ufrpe.br ||bdtd@ufrpe.bropendoar:2024-05-28T12:38:05.160716Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE)false |
dc.title.por.fl_str_mv |
Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática |
title |
Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática |
spellingShingle |
Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática BRITO, Nielson Dinivan da Silva Semiárido Caatinga Vegetação lenhosa Anatomia vegetal Densidade da madeira Fenologia Potencial hídrico Sazonalidade FITOTECNIA::MELHORAMENTO VEGETAL |
title_short |
Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática |
title_full |
Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática |
title_fullStr |
Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática |
title_full_unstemmed |
Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática |
title_sort |
Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática |
author |
BRITO, Nielson Dinivan da Silva |
author_facet |
BRITO, Nielson Dinivan da Silva |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
LIMA, André Luiz Alves de |
dc.contributor.advisor-co1.fl_str_mv |
SOUZA, Eduardo Soares de |
dc.contributor.referee1.fl_str_mv |
SOARES, Arlete Aparecida |
dc.contributor.referee2.fl_str_mv |
FERREIRA, Clébio Pereira |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6758112022735043 |
dc.contributor.author.fl_str_mv |
BRITO, Nielson Dinivan da Silva |
contributor_str_mv |
LIMA, André Luiz Alves de SOUZA, Eduardo Soares de SOARES, Arlete Aparecida FERREIRA, Clébio Pereira |
dc.subject.por.fl_str_mv |
Semiárido Caatinga Vegetação lenhosa Anatomia vegetal Densidade da madeira Fenologia Potencial hídrico Sazonalidade |
topic |
Semiárido Caatinga Vegetação lenhosa Anatomia vegetal Densidade da madeira Fenologia Potencial hídrico Sazonalidade FITOTECNIA::MELHORAMENTO VEGETAL |
dc.subject.cnpq.fl_str_mv |
FITOTECNIA::MELHORAMENTO VEGETAL |
description |
Seasonally dry tropical forest plants are susceptible to the cavitation of their pots, both in leaves and in the wood, having a greater tension in the water column and managing a trade-off between efficiency and hydraulic safety, which is reflected in the density of wood and structure of the xylem. However, the interrelationship between biological and hydraulic parameters is complex and little explored, and this correlation is essential for the best compression of drought tolerance. The objective of this work was to test the hypothesis that plants in the semiarid region have different mechanisms and tolerance to drought as a function of wood density. The anatomical, phenological and physiological characteristics of four woody species from the caatinga were analyzed, belonging to two groups, two with high wood density (HWD) and two with low wood density (LWD). The study was carried out in a caatinga area, semiarid region of Brazil, where monthly data were collected, for one year, on phenology, xylem water potential and stomatal conductance. In addition, the leaves and branches were performed to analyze the anatomical structure. The R software was used on the RStudio v 1.1.46 - 2009-2018 and SigmaPlot version 14 platform, for statistical analysis and graphics production. As expected, the density of the wood along with the phenology, anatomy and physiology was crucial to understand the goals of efficiency and hydraulic safety. LWD species class a preventive strategy, while HWD species were more tolerant to drought. As a preventive way, as BDM species lost as leaves before starting the dry season, potential hydraulic conductivity dissipation 66.78% higher than HWD species, as well as higher stomatal density (24.81%). However, LWD species were 54.18% more vulnerable to hydraulic failures than HWD species. The HWD species anatomically more resistant leaves, with the presence of gelatinous fibers next to a sclerenchyma sheath specific to a central rib, not being observed in LWD species. These data indicate that HWD species have a greater tolerance to drought because they have a more resistant hydraulic architecture. On the other hand, as LWD species use preventive strategies, maintaining their high water potential to prevent the collapse of the hydraulic system during the dry period. Based on the results, an interrelation of biological and hydraulic factors determines the plant's drought performance as a function of the functional group, demonstrating that adaptive groups may differ depending on the drought |
publishDate |
2021 |
dc.date.issued.fl_str_mv |
2021-02-24 |
dc.date.accessioned.fl_str_mv |
2023-08-09T21:39:32Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
BRITO, Nielson Dinivan da Silva. Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática. 2021. 45 f. Dissertação (Programa de Pós-Graduação em Produção Vegetal) - Universidade Federal Rural de Pernambuco, Serra Talhada. |
dc.identifier.uri.fl_str_mv |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/9290 |
identifier_str_mv |
BRITO, Nielson Dinivan da Silva. Estratégias de segurança hidráulica e características anatômicas de plantas lenhosas da Caatinga em resposta à sazonalidade climática. 2021. 45 f. Dissertação (Programa de Pós-Graduação em Produção Vegetal) - Universidade Federal Rural de Pernambuco, Serra Talhada. |
url |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/9290 |
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Universidade Federal Rural de Pernambuco |
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Programa de Pós-Graduação em Produção Vegetal |
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UFRPE |
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Unidade Acadêmica de Serra Talhada |
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Universidade Federal Rural de Pernambuco |
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