{"id":7839,"date":"2021-06-24T19:08:00","date_gmt":"2021-06-24T22:08:00","guid":{"rendered":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/?page_id=7839"},"modified":"2021-06-24T19:14:31","modified_gmt":"2021-06-24T22:14:31","slug":"douglas-dourado-santos-ms","status":"publish","type":"page","link":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/dissertacoesteses\/douglas-dourado-santos-ms\/","title":{"rendered":"Douglas Dourado Santos MS"},"content":{"rendered":"

\"faixapos6\"<\/a><\/h2>\n
\n

Douglas Dourado Santos<\/h2>\n
\n

Em 15 de abril de 2019, o aluno Douglas Dourado Santos do programa de P\u00f3s-Gradua\u00e7\u00e3o em Biodiversidade Vegetal e Meio Ambiente do Instituto de Bot\u00e2nica de S\u00e3o Paulo, bolsista CAPES, defendeu sua disserta\u00e7\u00e3o de mestrado intitulada: \u201cDeposi\u00e7\u00e3o de HPAs em remanescentes de Floresta Atl\u00e2ntica\u201d<\/strong>.<\/p>\n

A banca examinadora foi presidida pela orientadora, Dra. Mirian Cilene Spasiani Rinaldi do N\u00facleo de Pesquisa em Ecologia (IBt), e contou com a participa\u00e7\u00e3o da Dra. Marie Bourotte do Instituto de Geoci\u00eancias (IGc\/USP) e do Dr.\u00a0 Maur\u00edcio Lamano Ferreira do Centro Universit\u00e1rio Adventista de S\u00e3o Paulo (UNASP \/ S\u00e3o Paulo).<\/p>\n

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Deposi\u00e7\u00e3o de HPAs em remanescentes de Floresta Atl\u00e2ntica<\/h3>\n
\n

ABSTRACT<\/strong><\/p>\n

Biotic and abiotic ecosystem compartments have an important role in reducing the concentrations of atmospheric polycyclic aromatic hydrocarbons (PAHs) in the atmosphere, such as the capture of these pollutants by leaf surfaces and soil. Because of the toxicity and the tendency of these compounds to bioaccumulate in the environment it is important to assess the impact of PAHs in different compartments of anthropized ecosystems. The leaf surface is the main interface of the exchange of these compounds between atmosphere and vegetation. Thus, many studies evaluate possible sources of PAHs and contaminations levels of atmosphere and vegetation through the accumulation of these compounds in leaves. However, the risk analysis based only on PAH\u2019s leaf concentration of few species may reduce the significance of the studies at ecosystem level, mainly in tropical and subtropical forests, which have a rich biodiversity. Thus, in two remnants of the Atlantic Forest, the present study was proposed aiming to: a) establish the levels of PAHs in leaves and soil and their mobility in the edaphic system; b) evaluate the capacity of pioneer and non-pioneer tree species to accumulate PAHs; c) explore the influence of seasonality on the concentrations of PAHs in the atmosphere, leaves and soil; d) evaluate the sources of atmospheric PAHs through their concentrations in atmospheric particulate matter and dry and wet depositions; e) investigate the relations between concentrations of PAHs present in the atmosphere, leaves and soil. Study was conducted in the following two remaining areas of Atlantic Forest situated in the State of S\u00e3o Paulo, Southeast Brazil: State Park Fontes do Ipiranga (PEFI) and Municipal Park Paranapiacaba (PP). PEFI is located in the southern region of the municipality of S\u00e3o Paulo (SP) and PP is located in the municipality of Santo Andr\u00e9 (SP). The highest daily PAH flows (dry + wet deposition) were found in the summer, with 10,6 \u00b5g m-2<\/sup> d-1<\/sup> e 7,7 \u00b5g m-2<\/sup> d-1<\/sup> in PEFI and PP, respectively. The \u03a3PAHs to PM10<\/sub> in PEFI ranged from 5 ng m-3<\/sup> to 1 ng m-3<\/sup> (summer) and from 29 ng.m-3<\/sup> to 1 ng.m-3<\/sup> (winter), while PP varied from 9 ng.m-3 to 2 ng.m-3<\/sup> (summer) and 9 ng.m-3<\/sup> to 1 ng.m-3<\/sup> (winter). The concentrations of PAHs in the atmosphere indicate that PP and PEFI are being impacted mainly by light (\u22112-3 rings) and heavy (\u22115 rings) PAHs. There is an indication of PAHs from pyrogenic sources at both sites. The PAHs present in Site 1 most likely come from fossil fuel burning by vehicle emissions, as its forest remnant is surrounded by urbanization. Site 2 most likely receives PAHs predominantly released by industrial activity in Cubat\u00e3o, such as the burning of fossil fuel for energy generation. There was no difference between successional groups (pioneer and non-pioneer) in the capacity of leaf accumulation of PAHs. Seasonality influenced the accumulation of PAHs by tree species, being more evident in PEFI. The concentrations of lighter PAHs in the soil and leaves of PEFI and PP were higher than the concentrations of intermediate and heavy compounds. However, the concentrations of compounds 5 rings were also important. There was greater mobility and enrichment by PAHs in the deeper horizon of the analyzed soil (20\u201330 cm) from PEFI than from PP and reflects the large concentration of pollutants that PEFI has received in the last 60 years. This study indicates that the both sites receive HPAs of anthropic origin, but PEFI receives higher concentrations of these compounds than PP.
\nKeywords: tropical forest, bioaccumulation, leaf, soil, atmosphere<\/p>\n

RESUMO<\/strong><\/p>\n

Compartimentos bi\u00f3ticos e abi\u00f3ticos dos ecossistemas desempenham um importante papel na redu\u00e7\u00e3o das concentra\u00e7\u00f5es dos hidrocarbonetos polic\u00edclicos arom\u00e1ticos (HPAs) atmosf\u00e9ricos, como pela capta\u00e7\u00e3o desses poluentes pelas superf\u00edcies foliares e solo. Devido a toxicidade e a tend\u00eancia dos HPAs em bioacumular no ambiente, \u00e9 importante avaliar o impacto destes nos diferentes compartimentos de ecossistemas antropizados. A superf\u00edcie foliar \u00e9 a principal interface de troca desses compostos entre atmosfera e vegeta\u00e7\u00e3o. Desta forma, muitos estudos avaliam poss\u00edveis fontes emissoras de HPAs e n\u00edveis de contamina\u00e7\u00e3o da atmosfera e da vegeta\u00e7\u00e3o por meio do ac\u00famulo desses compostos em folhas. Por\u00e9m, a alta biodiversidade das florestas tropicais e subtropicais para a an\u00e1lise de riscos ao ecossistema pode diminuir a signific\u00e2ncia de an\u00e1lises da concentra\u00e7\u00e3o foliar de HPAs, que se baseiam em poucas esp\u00e9cies avaliadas. Assim, considerando dois remanescentes de Floresta Atl\u00e2ntica, os objetivos deste estudo foram: (a) estabelecer os n\u00edveis de HPAs em folhas e solo, bem como sua mobilidade no sistema ed\u00e1fico; (b) avaliar a capacidade das esp\u00e9cies arb\u00f3reas pioneiras e as esp\u00e9cies n\u00e3o pioneiras em acumular HPAs; (c) explorar a influ\u00eancia sazonal na distribui\u00e7\u00e3o dos HPAs na atmosfera, folhas e solo; (d) avaliar as fontes dos HPAs atmosf\u00e9ricos por meio de suas concentra\u00e7\u00f5es no material particulado atmosf\u00e9rico e deposi\u00e7\u00f5es seca e \u00famida; (e) investigar as rela\u00e7\u00f5es entre as concentra\u00e7\u00f5es de HPAs presentes na atmosfera, nas folhas e no solo. O estudo foi conduzido em dois remanescentes de Floresta Atl\u00e2ntica no Estado de S\u00e3o Paulo: Parque Estadual das Fontes do Ipiranga (PEFI), situado na regi\u00e3o sul do munic\u00edpio de S\u00e3o Paulo (SP), e Parque Natural Municipal Nascentes de Paranapiacaba (PP), situado no munic\u00edpio de Santo Andr\u00e9 (SP). As maiores estimativas de fluxos di\u00e1rios de HPAs (deposi\u00e7\u00e3o seca + \u00famida) foram encontradas no ver\u00e3o, com 10,6 \u00b5g m-2<\/sup> dia-1<\/sup> e 7,7 \u00b5g m-2<\/sup> dia-1<\/sup> no PEFI e PP, respectivamente. As \u2211HPAs verificadas no MP10 do PEFI variaram de 5 ng m-3<\/sup> a 1 ng m-3<\/sup> (ver\u00e3o) e de 29 ng m-3<\/sup> a 1 ng m-3<\/sup> (inverno), enquanto em PP variaram de 9 ng m-3<\/sup> a 2 ng m-3<\/sup> (ver\u00e3o) e de 9 ng m-3<\/sup> a 1 ng m-3<\/sup> (inverno). As concentra\u00e7\u00f5es de HPAs verificadas na atmosfera apontam que PP e PEFI est\u00e3o sendo impactados principalmente pelos HPAs leves (\u22112-3 an\u00e9is) e pesados (\u22115 an\u00e9is). H\u00e1 uma indica\u00e7\u00e3o da presen\u00e7a de HPAs oriundos de fontes pirog\u00eanicas nos dois locais.\u00a0Os PAHs verificados no PEFI provavelmente prov\u00eam da queima de combust\u00edveis f\u00f3sseis, por meio da emiss\u00e3o veicular, enquanto PP deve receber esses compostos oriundos da atividade industrial de Cubat\u00e3o, como a queima de combust\u00edveis f\u00f3sseis para gera\u00e7\u00e3o de energia. N\u00e3o foi verificada diferen\u00e7a entre grupos sucessionais (pioneiras e n\u00e3o pioneiras) na capacidade de ac\u00famulo foliar de HPAs, em ambos os remanescentes. A sazonalidade influenciou no ac\u00famulo de HPAs pelas esp\u00e9cies arb\u00f3reas, sendo mais evidente no PEFI. As concentra\u00e7\u00f5es de HPAs mais leves no solo e folhas do PEFI e de PP foram superiores \u00e0s concentra\u00e7\u00f5es dos compostos intermedi\u00e1rios e pesados. Por\u00e9m, destacaram-se tamb\u00e9m alguns compostos com 5 an\u00e9is. Houve maior mobilidade e enriquecimento por HPAs no horizonte mais profundo do solo analisado (20\u201330 cm) do PEFI que de PP e reflete a grande concentra\u00e7\u00e3o de poluentes que o PEFI j\u00e1 recebeu nos \u00faltimos 60 anos. Este estudo aponta que os dois locais recebem HPAs de origem antr\u00f3pica, por\u00e9m o PEFI recebe maiores concentra\u00e7\u00f5es desses compostos que o PP.
\nPalavras-chave: floresta tropical, bioacumula\u00e7\u00e3o, folha, solo, atmosfera<\/p>\n

\n

\"pdf_grande\"<\/a>Douglas Dourado Santos <\/strong><\/a>
\nDeposi\u00e7\u00e3o de HPAs em remanescentes de Floresta Atl\u00e2ntica<\/a><\/p>\n

\n

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

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

Douglas Dourado Santos Em 15 de abril de 2019, o aluno Douglas Dourado Santos do programa de P\u00f3s-Gradua\u00e7\u00e3o em Biodiversidade Vegetal e Meio Ambiente do Instituto de Bot\u00e2nica de S\u00e3o Paulo, bolsista CAPES, defendeu sua disserta\u00e7\u00e3o de mestrado intitulada: \u201cDeposi\u00e7\u00e3o de HPAs em remanescentes de Floresta Atl\u00e2ntica\u201d. A banca examinadora foi presidida pela orientadora, Dra. […]<\/p>\n","protected":false},"author":103,"featured_media":0,"parent":249,"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\/7839"}],"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\/103"}],"replies":[{"embeddable":true,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/comments?post=7839"}],"version-history":[{"count":2,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages\/7839\/revisions"}],"predecessor-version":[{"id":7842,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages\/7839\/revisions\/7842"}],"up":[{"embeddable":true,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages\/249"}],"wp:attachment":[{"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/media?parent=7839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}