Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-01-03T21:40:10Z No. of bitstreams: 1 MariliaGomesTeixeira_DISSERT.pdf: 1975819 bytes, checksum: 9edbbae514b86aa68c6ae565080c4936 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-01-09T15:19:00Z (GMT) No. of bitstreams: 1 MariliaGomesTeixeira_DISSERT.pdf: 1975819 bytes, checksum: 9edbbae514b86aa68c6ae565080c4936 (MD5) / Made available in DSpace on 2017-01-09T15:19:00Z (GMT). No. of bitstreams: 1 MariliaGomesTeixeira_DISSERT.pdf: 1975819 bytes, checksum: 9edbbae514b86aa68c6ae565080c4936 (MD5) Previous issue date: 2016-05-23 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A Caatinga ? o ?nico bioma cujos limites est?o inteiramente restritos ao territ?rio nacional, sendo que ainda ? tratada com baixa prioridade de investimento em conserva??o, sendo hoje uma das ecorregi?es mais amea?adas da terra, devido ?s altas taxas de convers?o do uso do solo e exist?ncia de poucas ?reas protegidas. O desmatamento tem sido o principal mecanismo respons?vel pela altera??o do bioma. Essas circunst?ncias despertaram nosso interesse para investigar o processo de expans?o em n?mero e ?rea das unidades de conserva??o (UCs) da Caatinga, no espa?o e ao longo do tempo; e avaliar a efici?ncia das UCs em evitar o desmatamento que ocorre no bioma, e de como a forma da UC e indicadores antr?picos da sua ?rea do entorno influenciam o desmatamento que ocorre no seu interior. Atualmente 7,8% da ?rea do bioma est? sob prote??o de 168 unidades de conserva??o. N?o houve associa??o entre as esferas de gest?o (federal e estadual) e o grupo de prote??o das UCs, uso sustent?vel ou prote??o integral, embora a din?mica de cria??o de UCs na Caatinga tenha mudado ao longo dos anos, e siga tend?ncias nacionais, como o aumento do n?mero de UCs sob gest?o estadual e de maior permissividade de uso, como as ?reas de Prote??o Ambiental (APAs). As UCs de prote??o integral foram as ?nicas que mostraram efici?ncia em conter o desmatamento que ocorre na sua ?rea do entorno de 5 e 10 km, e as APAs foram as UCs mais suscet?veis ?s press?es de desmatamento externo. O desmatamento dentro das UCs est? diretamente relacionado ao grupo de prote??o a que pertencem. A forma da UC, densidade de estradas e propor??o de vegeta??o no entorno das unidades de conserva??o n?o apresentaram rela??o com o desmatamento que ocorreu dentro dessas ?reas. / Caatinga is the only Brazilian biome with boundaries entirely restricted to the national territory. It has low priority in conservation investment even nowadays and is one of Brazil's natural regions less protected. This study evaluated the process of expansion of reserves (protected areas under Sistema Nacional de Unidades de Conserva??o ? SNUC - environmental law) in the Caatinga, in space and over time. Currently 7.8% of the biome area is under 168 reserves protection. The administration levels (federal or state administration) was not associated with reserves type, like sustainable use or strict protection. The reserves creation dynamics has changed over time, and resembled national trends, with increasing number of protected areas under state administration and greater permissiveness of use, such as ?reas de Prote??o Ambiental (APAs). Federal strict use reserves are on average larger than the state strict use reserves. Piau? is the state with the highest proportion of area protected by reserves in the Caatinga, followed by Bahia and Maranh?o. Only in Cear?, Bahia and Minas Gerais most of the area protected by reserves area under state administrative level, and only in Cear? and Bahia most of this areas are from sustainable use categories. Initiatives to create reserves takes place according to local demands and interests, but should cover both strict use and sustainable use reserves, and meet the recommendations of Caatinga priority areas for conservation exercises conducted by Ministry of the Environment.