Banca de DEFESA: RAFAELA MARIA DE FRANÇA BEZERRA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : RAFAELA MARIA DE FRANÇA BEZERRA
DATA : 29/08/2017
HORA: 14:30
LOCAL: Sala de Reuniões, Centro de Biociências, UFRN
TÍTULO:

THE POTENTIAL UTILITY OF THE CAATINGA IN THE AÇU VALLEY MICROREGION-RN: a parallel between the ceramic sector and the rural settlements as conservation grant

PALAVRAS-CHAVES:

Environmental Perception, Ceramic industry, Ethnobotany, Value in Use, Conservation Priority Index.

PÁGINAS: 136
GRANDE ÁREA: Outra
ÁREA: Ciências Ambientais
RESUMO:

The Caatinga vegetation has been widely used for industrial and subsistence purposes in the Açu Valley. When these practices are not sustainable, some species can turn into a vulnerable situation. Ethnobotanical studies can facilitate to identify usage patterns and guide conservation strategies for Caatinga. Considering the rarity of such studies, this thesis is aimed to register the diversity and versatility of Caatinga plants used by the ceramic industry and rural settlements at the Açu Valley-RN identifying species of intense exploration and imminent conservation. Preliminarily a quali-quantitative diagnosis of the vegetation used by the ceramic industries through semi-structured interviews with 120 social actors involved in this sector, divided into three groups: Potters, Lumberjacks and Farmers in four rural settlements that are potential suppliers of timber, used in the manufacturing process of Red pottery. The characterization of the industries technological profile and the perception of their impact on the local vegetation was analyzed. Correspondence analysis were used to verify the correlation between the most used species by the ceramic industry and the ones perceived as missing by settlements and the generalized linear model (GLM) to evaluate the relationship between the distance of the settlements and industries and the number of species listed as missing. The second step was focus to identify the severity and multitude uses of the vegetation by rural settlements through participant observation, guided tour and semi-structured interviews. The mentioned uses were distributed into utility categories, the useful species had its Value in Use and Relative Importance calculated. The ecological diversity was estimated for each settlement through the calculation of Shannon index (H') and Pielou Evenness (J), then were compared by t Test. The utility categories proportions were submitted to a multinomial analysis and the relation "Value in Use vs. Utility Categories" was analyzed by Spearman Correlation. The identification of priority conservation species was performed by calculating the Conservation Priority index, a pioneer approach in the State of Rio Grande do Norte. This index is based on biological scores and in usage founded on phytosociological inventories and Ethnobotanical surveys. The values obtained for each species allowed to categorize them according to the criticality of its condition. An intense dependency of the Caatinga for the regional ceramic industry was identified, emphasizing the massive use of the Mimosa tenuiflora and Pityrocarpa moniliformis, whose perception of abundance decreased has been observed primarily by settlements located closer to the ceramic belt. Regarding the use of the vegetation 12 by the settlements, there is a high dependence of the forest resources, mainly for constructive and medicinal purposes. These categories of use were more representative in the four areas. Associated to its versatility, the M. tenuiflora was highlighted as the most important specie for the subsistence families studied, once that had achieved the highest Value in Use. In relation to the therapeutic use of vegetation, the Poincianella pyramidalis achieved the highest relative importance. Regarding the vegetation state of conservation, it was noticed a close association between massive exploitation, rarity and conservation priority index, where in general, the most used species are the ones with the smallest local abundance and therefore have greater immediacy. In this context the species Anadenanthera colubrina, Commiphora leptophloes, Ziziphus joazeiro, Ximenia americana, Libidibia ferrea, Auxemma oncocalyx, Handroanthus impetiginous and Myracrodruon urundeuva are highlighted, once that they are in a situation of vulnerability in the studied region. Considering the high ecological and socio-economic importance of the Caatinga to the Northeast region of Brazil, it becomes urgent to adopt procedures that intended the regeneration, the conservation and sustainable use of these species.

MEMBROS DA BANCA:
Presidente - 350231 - MAGDI AHMED IBRAHIM ALOUFA
Externo ao Programa - 338397 - ELINEI ARAÚJO DE ALMEIDA
Externo à Instituição - AMILTON GURGEL GUERRA - EMPARN
Externo à Instituição - MARIA CRISTINA BASÍLIO CRISPIM DA SILVA - UFPB
Externo à Instituição - RAMIRO GUSTAVO VALERA CAMACHO - UERN