Rescue of endemic species: strategies for conservation of biodiversity of campos rupestres quartz?ticos

Autor: Santos, Amanda Cristina dos
Přispěvatelé: Pereira, Israel Marinho, Machado, Evandro Luiz Mendon?a, Titon, Miranda, Mendon?a Filho, Carlos Victor, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)
Jazyk: portugalština
Rok vydání: 2018
Předmět:
Zdroj: Repositório Institucional da UFVJM
Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)
instacron:UFVJM
Popis: O presente trabalho foi realizado com apoio da Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - Brasil (CAPES) - C?digo de Financiamento 001. Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2019-02-26T14:30:34Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) amanda_cristina_santos.pdf: 2947036 bytes, checksum: aa1b7393784f111c46d2f8ed85707450 (MD5) Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2019-03-07T17:21:16Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) amanda_cristina_santos.pdf: 2947036 bytes, checksum: aa1b7393784f111c46d2f8ed85707450 (MD5) Made available in DSpace on 2019-03-07T17:21:16Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) amanda_cristina_santos.pdf: 2947036 bytes, checksum: aa1b7393784f111c46d2f8ed85707450 (MD5) Previous issue date: 2018 Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) A explora??o dos recursos naturais ? uma das atividades degradat?rias que mais interfere na din?mica natural dos ecossistemas. A minera??o de rochas ornamentais na Serra do Espinha?o tem se desenvolvido rapidamente, contribuindo para o crescimento socioecon?mico regional, ao ponto que, tamb?m ? respons?vel pela supress?o de grandes ?reas naturais. Tendo em vista a atual legisla??o miner?ria, empresas se comprometem a mitigar os impactos ambientais por meio da ado??o de estrat?gias de conserva??o, entre elas, o resgate de esp?cies. Diante deste cen?rio, o objetivo do presente trabalho ? estabelecer protocolos de resgate para duas esp?cies end?micas do Espinha?o Meridional: Cipocereus minensis e Syagrus glaucescens. Para Cipocereus minensis testou-se a sobreviv?ncia da planta inteira e tr?s tamanhos de estacas caulinares (10 cm, 20 cm e 30 cm) submetidas a diferentes n?veis de luminosidade (pleno sol, 50 e 80% de sombreamento), al?m de seu desenvolvimento radicular ao fim de um per?odo de 12 meses. No caso do Syagrus glaucescens sua sobreviv?ncia e teores m?dios de clorofila foram avaliados de acordo com tr?s classes de tamanho (pequena, m?dia e grande) e quatro diferentes n?veis de sombreamento (pleno sol, 30%, 50% e 80%). O resultado deste estudo corroborou a efici?ncia da metodologia proposta bem como as melhores condi??es para acomoda??o dos indiv?duos p?s - resgate. Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2018. The exploration of natural resources is one of the most detrimental activities affecting the natural dynamics of ecosystems. The mining of ornamental rocks in the Serra do Espinha?o has developed, contributing to regional socioeconomic development, to the point that it is also responsible for the suppression of large areas of natural vegetation. Given the current mining legislation, companies compromise to mitigate environmental impacts through conservation strategies, among them, the rescue of species, study of this work. In view of this scenario, the objective of the present work is to establish rescue protocols for two endemic species of the Southern Espinha?o: Cipocereus minensis and Syagrus glaucescens, and to test protocol efficiency through statistical efficiency. For Cipocereus minensis the survival of four types of fragmentation (without fragmentation and stem cuttings of 10 cm, 20 cm, 30 cm) under different levels of shading (full sunlight, 50 and 80%) was tested. In the case of Syagrus glaucescens, its survival and mean chlorophyll content were evaluated according to three size classes (small, medium and large) and four different levels of shading (full sunlight, 30%, 50% and 80%). The result of this study corroborated the efficiency of the methodology as well as the best conditions for the accommodation of post-rescue individuals.
Databáze: OpenAIRE
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