?rea de concentra??o: Conserva??o e restaura??o de ecossistemas florestais . / Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-04-17T17:05:56Z No. of bitstreams: 2 andre_r_c_gianotti.pdf: 1027911 bytes, checksum: 2e811bd8a0fe88c670ea38ebdbe1ee99 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-04-17T17:26:52Z (GMT) No. of bitstreams: 2 andre_r_c_gianotti.pdf: 1027911 bytes, checksum: 2e811bd8a0fe88c670ea38ebdbe1ee99 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-04-17T17:26:53Z (GMT). No. of bitstreams: 2 andre_r_c_gianotti.pdf: 1027911 bytes, checksum: 2e811bd8a0fe88c670ea38ebdbe1ee99 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2012 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / O clima e o solo tem uma estreita rela??o com a vegeta??o de uma determinada localidade. Visando entender melhor essa din?mica na ambiente do cerrado, este estudo teve como objetivo estudar na regi?o de Diamantina a intera??o dos elementos clim?ticos entre fitofisionomias de Campo Rupestre e Cerrado Rupestre e tamb?m relacionar as caracter?sticas ed?ficas e flor?sticas com o clima. Para an?lise flor?stica foram alocadas, nos dois ambientes de estudo, 10 parcelas cont?guas de 20x50m, totalizando uma amostragem de 10.000 m?. Para os elementos clim?ticos foram utilizados, para caracterizar os ambientes de cerrado, a temperatura, a umidade relativa do ar, a press?o real e de satura??o do vapor de ?gua, o d?ficit de press?o do vapor do ar, a velocidade do vento, a precipita??o, a irradi?ncia solar global, e a amplitude t?rmica. Utilizaram-se para tal os dados obtidos em duas esta??es meteorol?gicas autom?ticas localizadas pr?ximo aos dois ambientes. Empregou-se o Teste-T para analisar a possibilidade de diferen?a entre m?dias das vari?veis clim?ticas nos dois ambientes, que atribuir?o distribui??o normal. Da mesma forma, aplicou-se o teste n?o param?trico Kruskal-Wallis para as vari?veis clim?ticas que n?o conferir?o normalidade nos dois ambientes em estudo. Optou-se ap?s essas an?lises, pelo uso da an?lise multivariada, para melhor compreens?o da distin??o microclim?tica desses dois ambientes. A an?lise can?nica dos componentes principais (PCA) distinguiu o grupo do Campo Rupestre e do Cerrado Rupestre, utilizando-se das mesmas vari?veis clim?ticas que obtiveram signific?ncia no Teste-T e no teste Kruskal-Wallis. O primeiro eixo do componente principal explanou a maior vari?ncia (67,8%) na qual o ambiente de Campo Rupestre se distingue do Cerrado Rupestre pela PCA principalmente em maior velocidade do vento, menor umidade relativa m?xima, menor press?o real e de satura??o do vapor de ?gua e menor temperatura m?xima e m?dia e menor amplitude t?rmica. A express?o da vegeta??o se d? em virtude da combina??o de fatores como o n?vel de rochosidade e profundidade do solo e clim?ticos, haja vista que as esp?cies vegetais s?o diferentes nesses ambientes: apenas sete das esp?cies se distribuem nos dois locais de estudo. Dessa forma, o Cerrado Rupestre apresenta alguns elementos da flora tamb?m presentes no Campo Rupestre, destacando-se o estrato subarbustivo-herb?cio. Para a segunda pesquisa, os indiv?duos do ambiente de Campo Rupestre foram avaliados quanto ? frequ?ncia, domin?ncia e densidade. Realizou-se a correla??o da densidade das esp?cies desse ambiente com 9 vari?veis qu?micas e f?sicas do solo por meio da an?lise de correspond?ncia can?nica (ACC). A maior abund?ncia de indiv?duos (I) foi representada pela esp?cie L. pohlii e foi verificada nas parcelas 6 (com 255 I), 7 (173 I), 8 (189 I), 9 (159 I) e a parcela 1 com 151 I. Verificaram-se nestas parcelas caracter?sticas flor?sticas e do solo semelhantes, resultando em uma proximidade espacial quando representadas nos diagramas da ACC. A esp?cie Lychnophora pohlii demonstrou capacidade de exist?ncia com maior abund?ncia em microambientes pedol?gicos favor?veis ao estabelecimento da esp?cie como estrat?gia de adapta??o ?s perturba??es ambientais. Essa separa??o se fez com base principalmente nos valores mais elevados de f?sforo remanescente, satura??o por bases, pH e areia grossa e, por outro lado, os menores valores de H+Al, mat?ria org?nica e argila. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The climate and soil has a close relationship with the vegetation of a particular locality. In order to better understand this dynamic environment of the cerrado, this study aimed to study the region of Diamantina climatic elements of the interaction between physiognomies of Savannah Rupestrian and Field Rupestrian and also relate the soil characteristics and species composition with the weather. For floristic analysis were allocated, in the two study environments, 10 contiguous parcels of 20x50 m, with a total sample of 10,000 m?. Soil sampling was done with the collection of 6 simple samples, from 0 to 20cm, forming a composite sample, the ten plots of each environment studied. The level of rockiness was defined as the proportion rock touched on the environment using the scale-Braun Blanquet studied in both environments.The climatic elements used to characterize the Savannah environments were: temperature, relative humidity, the actual pressure and saturated vapor water, the deficit pressure vapor air, wind speed, precipitation, global solar irradiance and temperature range.Were used for such data from the two stations located close to the two automatic environments. We used the t-test to examine the possibility of differences between means of climate variables in the two environments that were normally distributed. Likewise, we applied the nonparametric Kruskal-Wallis test for climatic variables not identified in both normal environments under study. It was decided, after these analyzes, the use of multivariate analysis to better understand the distinction these two climatic environments. The canonical analysis of principal components (PCA) distinguished the group's Field Rupestrian and the Savannah Rupestrian, using the same climate variables that achieved significance in the T-test and Kruskal-Wallis test. The first axis of principal component explain the greatest variance (67.8%) in which the environment Field Rupestrian is distinguished from the Savannah Rupestrian by PCA mainly at higher wind speeds, lower humidity relative maximum, lower actual pressure and saturation vapor water and lower temperature maximum and average and lower temperature range. The expression of the vegetation is due to the combination of climatic and edaphic factors, given the fact that the species are different in these environments. In this way, Savannah rupestrian flora includes some elements also present in the Field rupestrian, especially in the stratum subshrubherb?cio. For the second study, individuals in the environment Field rupestrian were evaluated for frequency, dominance and density. Went conducted the correlation between the density of this species with nine chemical and physical variables of the soil through canonical correspondence analysis (CCA). The greater abundance of individuals (I) of the species L. pohlii was observed in plots 06 (with 255 I), 7 (173 I), 8 (189 I), 9 (I 159) and 1 (151 I). As seen in these parcels characteristics floristic and similar soil, resulting in a spatial proximity when represented in the diagrams of the ACC. The specie Lychnophora pohlii demonstrated the ability of existence with greater abundance in soil microenvironments favorable to the establishment of the specie as a strategy to adapt to environmental perturbations. This separation was made based mainly on higher values of phosphorus balance, saturation, pH and coarse sand, and on the other hand the lowest values of H + Al, organic matter and clay.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 5.pdf: 1593900 bytes, checksum: 2373f74a6227b91b45de5fc1b4212e3e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:08:32Z (GMT) No. of bitstreams: 5 5.pdf: 1593900 bytes, checksum: 2373f74a6227b91b45de5fc1b4212e3e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:08:32Z (GMT). No. of bitstreams: 5 5.pdf: 1593900 bytes, checksum: 2373f74a6227b91b45de5fc1b4212e3e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Este trabalho teve como objetivo conhecer a estrutura, composi??o flor?stica e rela??o vegeta??o-ambiente em comunidades arbustivo-arb?reas de diferentes fitofisionomias de Cerrado. Os fragmentos situam-se na Fazenda Experimental do Moura em Curvelo-MG (cerrado sentido restrito ? 18,84? S e 44,39? W; cerrad?o ? 18?82? S e 44?25? W; altitude m?dia de 715 m), sob clima do tipo Aw de K?ppen e sobre substrato de Latossolos ?cidos e distr?ficos. O Invent?rio florestal foi conduzido por meio de parcelas permanentes retangulares (20?50 m) com ?rea de 1000 m?; para a regenera??o natural (RN), utilizou-se sub-parcelas com ?rea de 100 m? (2?50 m), instaladas no centro de cada parcela. Foram instaladas trinta unidades amostrais na ?rea de cerrado sentido restrito (quinze para a vegeta??o adulta e quinze para a RN) e dez unidades na ?rea de cerrad?o. O compartimento adulto foi representado por todos os indiv?duos vivos dentro das parcelas com DAS (circunfer?ncia a 0,3 m do n?vel do solo) > 5,0 cm, e nas sub-parcelas, para a RN, registrou-se todo indiv?duo vivo com comprimento de fuste > 10 cm e DAS < 5,0. ?rvore com fuste bifurcado foi inclu?da como indiv?duo ?nico e no caso da vegeta??o adulta quando o valor dos DAS fundidos atendia ao crit?rio. A RN foi subdividida em tr?s classes de di?metro: I ? (DB entre 0,028 e 2,0 cm); II ? (DB entre 2,0 e 4,0 cm) e III ? (DB > 4,0 cm). Foram coletadas vari?veis ambientais para cada parcela para subsidiar an?lises diretas de gradiente por meio de duas matrizes (vegeta??o e ambiente). Foram realizadas an?lises de diversidade alfa e beta temporal (cerrado sentido restrito entre adultos e RN). Foi registrado um total de 127 esp?cies nas tr?s ?reas, sendo 39 fam?lias identificadas e 89 g?neros identificados. As an?lises de correspond?ncia can?nica indicaram correla??es significativas entre distribui??o espacial da abund?ncia de esp?cies com algumas vari?veis ambientais para quatro das cinco an?lises realizadas (duas para o compartimento adulto e tr?s para as classes da RN). As an?lises indicaram valores de diversidade alfa condizentes para ?reas de Cerrado. Destacam-se em fun??o da densidade, em toda a amostragem, os g?neros Annona, Byrsonima, Erythroxylum, Myrcia e Qualea e a esp?cie Magonia pubescens. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011. / ABSTRACT This study aimed to know the structure, floristic composition and environment-vegetation relationship in communities of different woody vegetation types of the Cerrado. The fragments are located in the Experimental Farm in Curvelo Moura, MG (cerrado sentido restrito ? 18,84? S e 44,39??W; cerrad?o-cerrado sentido restrito transition ? 18?82??S e 44?25??W; average elevation of 715 m), climate under the K?ppen Aw and on substrate of dystrophic and acids. The forest inventory was conducted by means of rectangular permanent quadrats (20 ? 50 m) with an area of ??1000 m?. For natural regeneration (RN), we used sub?-plots with an area of ??100 m? (2 ? 50 m) installed in the center of each plot. Thirty sample units were installed in the area of ??cerrado sensu stricto (fifteen to vegetation and fifteen adult to RN) and ten units in the area of ??dense cerrad?o-cerrado sentido restrito transition. The adult compartment was represented by all individuals living within the plots with diameter at soil height (DSH - diameter to 0.3 m from ground level) >?5.0 cm, and in sub-quadrats, natural regeneration (RN) composed of alive individuals with long stem >?10?cm e DSH <?5.0. Tree with bifurcated stem were included as a unique individual, and in case of adult vegetation, only included when the value of square root of the sum-square of DSH had been greater than criterion. The RN were divided into three diameter classes: I - (DB between 0.028 and 2.0 cm), II - (DB between 2.0 and 4.0 cm) and III - (DB> 4.0 cm). Environmental variables were collected for each plot to subsidize direct gradient analysis by means of two arrays (vegetation and environment). Were performed analyzes of alpha and beta temporal diversity (in cerrado sensu stricto between adults and RN). It was recorded a total of 127 species in three areas, and identified 39 families and 89 genera identified. The canonical correspondence analysis indicated significant correlations between spatial distribution of species abundance with some environmental variables for four of the five tests performed (two for the adult compartment and three classes for the classes of RN). Stand out as a function of density in the entire sample, gender Annona, Byrsonima, Erythroxylum, Myrcia and Qualea, and the specie Magonia pubescens.