{"id":8311,"date":"2022-12-14T09:46:07","date_gmt":"2022-12-14T11:46:07","guid":{"rendered":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/?page_id=8311"},"modified":"2022-12-14T09:46:07","modified_gmt":"2022-12-14T11:46:07","slug":"leonardo-hamachi-dr","status":"publish","type":"page","link":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/leonardo-hamachi-dr\/","title":{"rendered":"Leonardo Hamachi DR"},"content":{"rendered":"

\"faixapos6\"<\/a><\/h2>\n
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Leonardo Hamachi<\/h2>\n
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Leonardo Hamachi, aluno do Instituto de Pesquisas Ambientais, N\u00facleo de Uso Sustent\u00e1vel de Recursos Naturais, orientando do pesquisador Marcos Pereira Marinho Aidar e coorientando da pesquisadora Adriana Hissae Hayashi defendeu sua tese para a obten\u00e7\u00e3o do t\u00edtulo de Doutor no dia 27\/05\/2020.<\/p>\n

Seu trabalho (Aspectos funcionais da nerva\u00e7\u00e3o foliar de Esp\u00e9cies arb\u00f3reas da Mata Atl\u00e2ntica, SP) investigou qual o papel das nervuras foliares de esp\u00e9cies arb\u00f3reas da Mata Atl\u00e2ntica do parque estadual da Serra do Mar, N\u00facleo Santa Virg\u00ednea, na produtividade das plantas e suas poss\u00edveis influ\u00eancias na composi\u00e7\u00e3o da vegeta\u00e7\u00e3o da floresta.<\/p>\n

De acordo com Leonardo, a nerva\u00e7\u00e3o foliar n\u00e3o demonstrou correla\u00e7\u00e3o com a produtividade das plantas, isso pode ter ocorrido porque o principal papel das nervuras \u00e9 o da condu\u00e7\u00e3o da \u00e1gua para os tecidos foliares. Devido \u00e0 \u00e1gua ser um recurso abundante na regi\u00e3o, outros fatores como, por exemplo, os est\u00e1gios sucessionais das esp\u00e9cies podem explicar melhor a diferen\u00e7a interespec\u00edfica na produtividade das arb\u00f3reas.<\/p>\n

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Aspectos funcionais da nerva\u00e7\u00e3o foliar de esp\u00e9cies arb\u00f3reas da Mata Atl\u00e2ntica, SP<\/h3>\n
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ABSTRACT<\/strong><\/h4>\n

Works concerning tropical forests have improved knowledge about their role in worldwide<\/span> biodiversity conservancy and source of environmental services essential to human life. In this<\/span> context, Atlantic Forest (AF) has a remarkable importance in Brazil. The<\/span> forest<\/span> has<\/span> suffered<\/span> intense<\/span> exploitation<\/span> since the first arrival of Europeans, consequently it<\/span> exhibits<\/span> distinct levels<\/span> of<\/span> human disturbance<\/span>. Tree species are of remarkable importance for the<\/span> forest<\/span> environmental<\/span> services<\/span> maintenance, they significantly pa<\/span>rticipate of the water cycle and the Earth primary<\/span> productivity. The vein organization pattern (venation)<\/span> worth<\/span> attention because it is closed<\/span> related to carbon metabolism and water relations in plants. Venation affects water conductibility<\/span> and photosynthe<\/span>tic efficiency in<\/span> leaves;<\/span> thus,<\/span> it has<\/span> been<\/span> used to predict physiological<\/span> proprieties of leaf. Recent studies<\/span> ha<\/span>ve<\/span> investigate<\/span>d<\/span> if veins have a central role in leaf economic<\/span> spectrum (<\/span>LES<\/span>), which consists in some plant traits, whereas mass\/area ratio (LMA) is possibly<\/span> the most important, capable to indicate if a species or functional group has high productivity<\/span> and low lifespan or low productivity and high lifespan. Moreover, venation may<\/span> be useful to<\/span> proxy environment water conditions of plants offering a predictive approach based in leaf<\/span> architecture. Therefore, in order to understand the role of venation in LES and the effects of<\/span> disturbance in species and functional groups from AF<\/span> the<\/span> a<\/span>im<\/span> of this<\/span> study<\/span> is to i<\/span>n<\/span>vestigate<\/span> vein<\/span> traits related to vein density (VD)<\/span> and<\/span> their relations with<\/span> plant econom<\/span>y traits<\/span> of<\/span> tree<\/span> dominant<\/span> s<\/span>pecies<\/span> of<\/span> four<\/span> permanent<\/span> plots<\/span> of<\/span> the<\/span> Thematic<\/span> Project<\/span> Biota\/FAPESP<\/span> \u201c<\/span>ECOFOR<\/span> no.12\/51872<\/span>–<\/span>5<\/span>)<\/span>:<\/span> two areas of mature fore<\/span>sts and two areas of secondary forests (one area<\/span> suffered selective cutting and another shallow cutting, both about 60 years ago).<\/span> The results<\/span> obtained indicate that the geometry of the leaf<\/span> venation<\/span> and not the density of the ribs represents<\/span> the main leaf<\/span> anatomical property capable of distinguishing the tree communities studied: the<\/span> most advanced forest communities in succession were characterized by a reduced distance<\/span> between ribs, which can result in low rates of gas exchange, while secondary forests pr<\/span>esented <\/span>two functional strategies: greater number of free terminations, enhancing the water supply to <\/span><\/span>the tissues; and greater cross<\/span>–<\/span>linking, providing greater equalization in the distribution of water<\/span> through the leaf blade and resistance to damage. More<\/span> generally, it is suggested that the leaf <\/span>veins appear to have less influence on the economy of the plant in the studied tropical forest,<\/span> possibly due to high water availability and environmental homogeneity among them.<\/span><\/span><\/span><\/span><\/p>\n


Keywords<\/strong>:<\/span> leaf architecture, functional traits,<\/span> human disturbance, method<\/span>, tropical rain<\/span> forest<\/span><\/span><\/p>\n

 <\/p>\n

RESUMO<\/strong><\/h4>\n

Trabalhos relacionados a florestas tropicais contribuem para a compreens\u00e3o sobre o papel<\/span> desses ecossistemas na conserva\u00e7\u00e3o da biodiversidade mundial e como fonte de servi\u00e7os<\/span> ambientais essenciais \u00e0 vida humana. Nesse co<\/span>ntexto, a Mata Atl\u00e2ntica (MA) merece destaque<\/span> no Brasil. A floresta sofreu intensa explora\u00e7\u00e3o desde a primeira chegada dos europeus,<\/span> consequentemente, exibe n\u00edveis distintos de perturba\u00e7\u00e3o antr\u00f3pica. As esp\u00e9cies arb\u00f3reas s\u00e3o de<\/span> not\u00e1vel import\u00e2ncia para a m<\/span>anuten\u00e7\u00e3o da floresta e dos servi\u00e7os ambientais, participando<\/span> significativamente do ciclo da \u00e1gua e da produtividade prim\u00e1ria da Terra. O padr\u00e3o de<\/span> organiza\u00e7\u00e3o<\/span> das<\/span> nervuras<\/span> foliares<\/span> dessas<\/span> plantas<\/span> merece<\/span> aten\u00e7\u00e3o,<\/span> pois<\/span> \u00e9<\/span> estreitamente<\/span> relacionado ao metabol<\/span>ismo do carbono e \u00e0s rela\u00e7\u00f5es h\u00eddricas nas plantas. A nerva\u00e7\u00e3o afeta a<\/span> condutividade da \u00e1gua na folha e a efici\u00eancia fotossint\u00e9tica nas folhas, sendo utilizada para<\/span> prever propriedades fisiol\u00f3gicas das folhas. Estudos recentes investigaram se as nervuras t<\/span>\u00eam<\/span> um<\/span> papel<\/span> central<\/span> no<\/span> espectro econ\u00f4mico das<\/span> folhas (<\/span>EEF<\/span>), que consiste em<\/span> algumas<\/span> caracter\u00edsticas das plantas, enquanto a raz\u00e3o massa\/\u00e1rea<\/span> foliar<\/span> (LMA) \u00e9 possivelmente a mais<\/span> importante, capaz de indicar se uma esp\u00e9cie ou grupo funcional tem alta produti<\/span>vidade e baixa<\/span> longevidade<\/span> ou<\/span> o inverso<\/span>. Al\u00e9m disso, a nerva\u00e7\u00e3o pode ser \u00fatil para avaliar as condi\u00e7\u00f5es<\/span> h\u00eddricas do ambiente das plantas, oferecendo uma abordagem preditiva baseada na arquitetura<\/span> das folhas. Portanto, a fim de entender o papel da nerva\u00e7\u00e3o<\/span> no EE<\/span>F<\/span> e os efeitos da perturba\u00e7\u00e3o<\/span> em esp\u00e9cies e grupos funcionais da MA, o objetivo deste trabalho \u00e9 estudar caracter\u00edsticas da<\/span> nerva\u00e7\u00e3o relacionadas \u00e0 densidade de nervuras (DV) ao longo de um gradiente de perturba\u00e7\u00e3o<\/span> e suas associa\u00e7\u00f5es com as caracter\u00eds<\/span>ticas funcionais da economia das plantas em esp\u00e9cies<\/span> arb\u00f3reas dominantes de quatro parcelas permanentes do Projeto Tem\u00e1tico Biota \/ FAPESP <\/span>\u201cECOFOR (n\u00ba 12 \/ 51872<\/span>–<\/span>5), sendo duas \u00e1reas de florestas maduras e duas \u00e1reas de florestas<\/span> secund\u00e1rias. Os resultados<\/span> obtidos indicam que a geometria da nerva\u00e7\u00e3o foliar e n\u00e3o a <\/span>densidade de nervuras representa a principal propriedade anat\u00f4mica foliar capaz de distinguir<\/span> as comunidades arb\u00f3reas estudadas: as comunidades florestais mais avan\u00e7adas na sucess\u00e3o <\/span><\/span>foram caracter<\/span>izadas por reduzida dist\u00e2ncia entre nervuras, o que pode resultar em baixas taxas<\/span> de trocas gasosas, enquanto florestas secund\u00e1rias apresentaram duas estrat\u00e9gias funcionais:<\/span> maior n\u00famero de termina\u00e7\u00f5es livres, potencializando o suprimento de \u00e1gua para os t<\/span>ecidos; e<\/span> maior reticula\u00e7\u00e3o conferindo maior equaliza\u00e7\u00e3o na distribui\u00e7\u00e3o de \u00e1gua pela l\u00e2mina foliar e<\/span> resist\u00eancia a danos. De modo mais geral, \u00e9 sugerido que a<\/span>s nervuras<\/span> foliares<\/span> parecem ter<\/span> menor<\/span> influ\u00eancia sobre a economia da planta<\/span> na floresta tropical<\/span> estudada,<\/span> possivelmente devido<\/span> alta<\/span> disponibilidade<\/span> h\u00eddrica<\/span> e homogeneidade ambiental apresentada entre elas<\/span>.<\/span><\/span><\/span><\/p>\n


Palavras<\/span>–<\/span>chave:<\/span><\/strong> arquitetura<\/span> foliar,<\/span> caracter\u00edstica<\/span> funcional,<\/span> floresta<\/span> tropical<\/span> pluvial<\/span>,<\/span> metodologia,<\/span> perturba\u00e7\u00e3o antr\u00f3pica<\/span><\/span><\/p>\n

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\"pdf_grande\"<\/a>Leonardo Hamachi
\nAspectos funcionais da nerva\u00e7\u00e3o foliar de esp\u00e9cies arb\u00f3reas da Mata Atl\u00e2ntica, SP<\/a><\/p>\n

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\u00a0VOLTAR AS DISSERTA\u00c7\u00d5ES E TESES<\/a><\/strong><\/p>\n

\n","protected":false},"excerpt":{"rendered":"

Leonardo Hamachi Leonardo Hamachi, aluno do Instituto de Pesquisas Ambientais, N\u00facleo de Uso Sustent\u00e1vel de Recursos Naturais, orientando do pesquisador Marcos Pereira Marinho Aidar e coorientando da pesquisadora Adriana Hissae Hayashi defendeu sua tese para a obten\u00e7\u00e3o do t\u00edtulo de Doutor no dia 27\/05\/2020. Seu trabalho (Aspectos funcionais da nerva\u00e7\u00e3o foliar de Esp\u00e9cies arb\u00f3reas da […]<\/p>\n","protected":false},"author":187,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages\/8311"}],"collection":[{"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/users\/187"}],"replies":[{"embeddable":true,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/comments?post=8311"}],"version-history":[{"count":1,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages\/8311\/revisions"}],"predecessor-version":[{"id":8313,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages\/8311\/revisions\/8313"}],"wp:attachment":[{"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/media?parent=8311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}