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Previous issue date: 2016 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Este trabalho teve como objetivo avaliar mudan?as flor?sticas e estruturais da comunidade e popula??es arb?reas em fitofisionomias de Cerrado e Floresta Estacional Semidec?dual. A ?rea de estudo se encontra situada na Fazenda Experimental do Moura, em Curvelo-MG (Cerrado stricto sensu ? CSS ? 18,84? S e 44,39? W; Cerrad?o ? CD ? 18?82?S e 44?25? W; e Floresta Estacional Semidecidual ? FES ? 18?45?S e 45? 25?W), o clima ? do tipo Aw de K?ppen e se encontra sobre substrato de Latossolos ?cidos e distr?ficos. Um primeiro invent?rio foi realizado no CSS e CD em 2010, quando foram identificados, medidos todos os indiv?duos vivos com di?metro altura do solo (DAS) ? 5,0 cm, a 0,30 m de altura do solo. J? para a FES, o primeiro invent?rio ocorreu em 2011 e foram medidos di?metros e identificados todos os indiv?duos vivos com di?metro altura do peito (DAP) ? 5,0 cm. O segundo invent?rio de todas as fitofisionomias foi realizado em 2015, foram adotados os mesmos crit?rios do invent?rio anterior, sendo remedidos os sobreviventes, registrados mortos e indiv?duos que atingiram o di?metro m?nimo de inclus?o no segundo invent?rio (recrutas) receberam placas com numera??o e foram identificados e mensurados. Em cada parcela de cada fitofisionomia foram coletados vari?veis ambientais para an?lises de correla??o de Pearson (vegeta??o e ambiente). Foram realizadas an?lises de din?mica flor?stica, estrutural e das popula??es mais abundantes, todas as esp?cies foram classificadas quanto ao status de conserva??o, densidade da madeira e dispers?o de sementes. No CSS, houve perda de uma ?nica esp?cie Zeyheria montana. As fam?lias com mais representantes Fabaceae com 13 esp?cies no primeiro invent?rio e 13 esp?cies no segundo invent?rio respectivamente, seguidos de: Bignoniaceae (6 e 5), Vochysiaceae (5 e 5) e Malpighiaceae (4 e 4), respectivamente. J? no CD, foram contabilizados (36 e 34) fam?lias, (74 e 69) g?neros (100 e 90) e esp?cies para o primeiro e segundo invent?rio nessa sequ?ncia, houve perda de 11 esp?cies e ganho de uma. As fam?lias mais representativas Fabaceae (15 e 14), Rubiaceae (8 e 8), Myrtaceae (7 e 5) e Bignoniaceae (7 e 7). Houve perda de duas fam?lias Siparunaceae e Opiliaceae. No entanto, na FES n?o houve mudan?as na riqueza de fam?lias (43), j? as esp?cies (132 e 129) perderam cinco e ganharam duas esp?cies. As fam?lias com mais esp?cies eram Fabaceae (21 e 20), Myrtaceae (14 e 12), Lauraceae e Meliaceae (9 e 9) e Rubiaceae (8 e 8), respectivamente. As taxas de mortalidade foram superiores as taxas de recrutamento nas tr?s fitofisionomias, no CSS (mortalidade de 2,13% ano-1 e recrutamento de 1,13% ano-1), seguindo essa mesma sequ?ncia para as outras fitofisionomias, no CD (8,84 e 1,18% ano-1) e FES (2,54 e 1,03% ano-1), respectivamente. Entre o primeiro e segundo invent?rio, houve acr?scimo de ?rea basal no somente no CSS. De maneira geral, os padr?es de din?mica foram mais acelerados nas popula??es do CD, onde visualmente os dist?rbios foram maiores, indicando que dependendo dos intervalos entre os dist?rbios, isso pode colocar em risco o estabelecimento de novos indiv?duos e o futuro das esp?cies. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / This work aimed to evaluate the floristic and structural changes at the level of community and tree populations in physiognomies of cerrado and semideciduous seasonal forest. The study area is situated on the Experimental Farm of the Moorish in Curvelo - MG (Cerrado sensu stricto ? CSS ? 18.84? S and 44.39? W; Cerrad?o ? CD ? 18? 82?S and 44? 25?? W; and semideciduous seasonal Forest ? FES - 18? 45' S and 45? 25' W, average elevation of 715 m), the climate and the type K?ppen Aw and about presence of Microaggregates substrate acidic and dystrophic. A first inventory was conducted in the CSS and CD in 2010 where they were identified, measured and estimated time, for all individuals living with (diameter 0.30 m height from the ground) (DAS) ? 5.0cm. To the FES, the first inventory occurred in 2011 and were measured diameters and identified all individuals living with diameter breast height (dbh) ? 5.0 cm. The second inventory of all physiognomies was held in 2015, and the same criteria were adopted in the previous inventory, being remeasured survivors, recorded dead and individuals who have attained the minimum diameter for inclusion in the second inventory (recruits) received plates with numbering and were identified and measured. On each plot of each phytophysiognomy, environmental variables were collected for analysis of correlation (vegetation and environment). Dynamic analyses were performed, structural and floristic most abundant populations, all species were classified as conservation status, wood density and seed dispersal. In CSS, loss of a single species Zeyheria montana. Families with more representatives Fabaceae (13 and 13), Bignoniaceae (6 and 5), Vochysiaceae (5 and 5) and Malpighiaceae (4 and 4).In the cd, accounting for families (36 and 34), genres (74 and 69) and species (100 and 90), there were 11 species loss and gain a. The most representative families fabaceae (14 and 15), rubiaceae (8 and 8), myrtaceae (7 and 5) and bignoniaceae (7 and 7). Loss of two families Siparunaceae and Opiliaceae. While in FES, don't listen to changes in family wealth (43), species (132 and 129) lost five and won two species. Families Fabaceae species (20 and 21), Myrtaceae (14 and 12), Lauraceae and Meliaceae (9 and 9) and Rubiaceae (8 and 8) respectively. Mortality rates were higher than the rates of recruitment in the three physiognomies, in CSS (2.13 and 1.13%. year-1), CD (8.84 and 1.18%. year-1) and FES (2.54 and 1.03% year-1) respectively. Mortality rates were higher than the rates of recruitment in the three physiognomies, in CSS (2.13 and 1.13%. year-1), CD (8.84 and 1.18%. year-1) and FES (2.54 and 1.03% year-1) respectively. Between the first and second inventory, there was an increase of basal area in CSS only. In General, dynamic patterns were more rapid in populations of the CD, where visually the disturbances were greater, indicating that depending on the intervals between the disturbances, it can jeopardize the establishment of new individuals and the future of the species.
| Identifer | oai:union.ndltd.org:IBICT/oai:acervo.ufvjm.edu.br/jspui:1/1341 |
| Date | 19 August 2016 |
| Creators | Silva, Leovandes Soares da |
| Contributors | Machado, Evandro Luiz Mendon?a, Oliveira, Marcio Leles Romarco de, Botezelli, Luciana, Gonzaga, Anne Priscila Dias, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Machado, Evandro Luiz Mendon?a |
| Publisher | UFVJM |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFVJM, instname:Universidade Federal dos Vales do Jequitinhonha e Mucuri, instacron:UFVJM |
| Rights | A concess?o da licen?a deste item refere-se ao ? termo de autoriza??o impresso assinado pelo autor, assim como na licen?a Creative Commons, com as seguintes condi??es: Na qualidade de titular dos direitos de autor da publica??o, autorizo a Universidade Federal dos Vales do Jequitinhonha e Mucuri e o IBICT a disponibilizar por meio de seus reposit?rios, sem ressarcimento dos direitos autorais, de acordo com a Lei n? 9610/98, o texto integral da obra disponibilizada, conforme permiss?es assinaladas, para fins de leitura, impress?o e/ou download, a t?tulo de divulga??o da produ??o cient?fica brasileira, e preserva??o, a partir desta data., info:eu-repo/semantics/openAccess |
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