Resumo
The growing extractive activity in forest areas, the inefficient use of management practices combined with the intensification of socioeconomic activities, are the main factors in the loss of biodiversity. In order to reduce environmental impacts, genetic characterization of populations allows to infer about their real situation. Thus, the present study aimed to perform an analysis of the genetic diversity of populations of Syagrus cearensis using ISSR markers. Populations AQU (Aquicultura), MTB (Mata do Bebo) and MOD (Mata Olho d´água) were sampled, totaling 53 individuals. ISSR markers generated a total of 61 loci. The AQU population had the highest polymorphism index (71%), followed by MTB (57%) and MOD (53%). AQU showed the highest index of genetic diversity, compared to the MTB and MOD populations. There was a high and significant genetic differentiation between populations. Bayesian analysis identified the existence of two groups (K = 2). The genetic bottleneck test was significant for the AQU and MOD populations, according to the SMM model. Thus, the populations of genetic diversity index close to the averages found for tropical species with a similar life history. The presence of a genetic bottleneck was detected in populations. The AQU population presented low sharing of genotypes with the others and should be prioritized in conservation activities.(AU)
Assuntos
Variação Genética , Arecaceae/genética , Biodiversidade , Florestas , Fenômenos GenéticosResumo
The purpose of this paper is to describe the potential of empirical knowledge or practice related to fishes and, in more general terms, the environmental perceptions of the population living alongside the Piraí river, Joinville, Santa Catarina, Brazil. Its point of departure is initial research that resulted in a preliminary ichthyological inventory of the river, from which methodological procedures relative to the qualitative dimension of the study were developed. Based on the testimony of the river land inhabitants, obtained through semi-structured interviews, analytical categories providing an ethnographic typology were developed. This typology was then used in the analysis of the testimony of the study"s informants, arriving at the conclusion that an ichthyological study based on dialogue with popular knowledge can be very valuable, given the local people"s sense of environmental conservation as it is linked to their sustainable life style
Este trabalho tem por objetivo descrever os potenciais do conhecimento empírico ou prático relacionados à ictiofauna e, de um modo mais amplo, à percepção ambiental da população ribeirinha do rio Piraí, Município de Joinville, Santa Catarina, Brasil. Partindo de uma pesquisa prévia, que teve como resultado um inventário ictiológico preliminar desse rio, foram elaborados os procedimentos metodológicos relativos à dimensão qualitativa do estudo. Com base nos depoimentos dessa população ribeirinha, obtidos mediante entrevista semi-estruturada, organizaram-se as categorias de análise com vistas a uma proposta de tipologia etnográfica. Essa tipologia foi utilizada na análise dos depoimentos dos sujeitos da pesquisa, concluindo-se que o estudo ictiológico desenvolvido sob uma perspectiva de diálogo com o saber popular dos ribeirinhos pode ser muito profícuo, em face do senso de conservação ambiental atrelado à sustentabilidade de seu modo de vida
Resumo
The purpose of this paper is to describe the potential of empirical knowledge or practice related to fishes and, in more general terms, the environmental perceptions of the population living alongside the Piraí river, Joinville, Santa Catarina, Brazil. Its point of departure is initial research that resulted in a preliminary ichthyological inventory of the river, from which methodological procedures relative to the qualitative dimension of the study were developed. Based on the testimony of the river land inhabitants, obtained through semi-structured interviews, analytical categories providing an ethnographic typology were developed. This typology was then used in the analysis of the testimony of the study"s informants, arriving at the conclusion that an ichthyological study based on dialogue with popular knowledge can be very valuable, given the local people"s sense of environmental conservation as it is linked to their sustainable life style
Este trabalho tem por objetivo descrever os potenciais do conhecimento empírico ou prático relacionados à ictiofauna e, de um modo mais amplo, à percepção ambiental da população ribeirinha do rio Piraí, Município de Joinville, Santa Catarina, Brasil. Partindo de uma pesquisa prévia, que teve como resultado um inventário ictiológico preliminar desse rio, foram elaborados os procedimentos metodológicos relativos à dimensão qualitativa do estudo. Com base nos depoimentos dessa população ribeirinha, obtidos mediante entrevista semi-estruturada, organizaram-se as categorias de análise com vistas a uma proposta de tipologia etnográfica. Essa tipologia foi utilizada na análise dos depoimentos dos sujeitos da pesquisa, concluindo-se que o estudo ictiológico desenvolvido sob uma perspectiva de diálogo com o saber popular dos ribeirinhos pode ser muito profícuo, em face do senso de conservação ambiental atrelado à sustentabilidade de seu modo de vida