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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Conhecimento ecol?gico local sobre esp?cies de anf?bios anuros e biocontrole de insetos pragas em sistemas agr?colas de regi?o semi?rida brasileira: subs?dios ? etnoconserva??o / Local ecological knowledge about species of amphibians and insect pest biocontrol in agricultural systems of brazilian semiarid region: subsidies etnoconservation

Oliveira, Iaponira Sales de 30 June 2016 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-03-09T23:07:11Z No. of bitstreams: 1 IaponiraSalesDeOliveira_TESE.pdf: 7423751 bytes, checksum: d1f0076be8615e4ab0d4436b4bd0fb6a (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-03-14T00:22:33Z (GMT) No. of bitstreams: 1 IaponiraSalesDeOliveira_TESE.pdf: 7423751 bytes, checksum: d1f0076be8615e4ab0d4436b4bd0fb6a (MD5) / Made available in DSpace on 2017-03-14T00:22:33Z (GMT). No. of bitstreams: 1 IaponiraSalesDeOliveira_TESE.pdf: 7423751 bytes, checksum: d1f0076be8615e4ab0d4436b4bd0fb6a (MD5) Previous issue date: 2016-06-30 / Historicamente, a agricultura praticada na regi?o semi?rida do nordeste brasileiro ? n?made, itinerante ou migrat?ria; os agricultores desmatam, queimam, fertilizam o solo, plantam por um curto per?odo e migram para outras ?reas, onde repetem a mesma pr?tica, al?m de utilizarem uma quantidade significativa de agroqu?micos para o combate de pragas. Esta atividade tem provocado perda significativa de qualidade de vida e da biodiversidade local. No contexto da biodiversidade, destacam-se os Anf?bios Anuros, que compreendem os sapos, r?s, pererecas e jias, s?o relevantes nas cadeias e teias ecol?gicas, especialmente por serem bioindicadores de qualidade ambiental e biocontroladores de popula??es de insetos, estabelecendo um controle natural de pragas em ?reas agr?colas. Apesar de suas import?ncias, nas duas ?ltimas d?cadas t?m ocorrido decl?nio e desaparecimento de algumas esp?cies de Anuros no Brasil e em todo o mundo, por seres sens?veis; uma vez que s?o sens?veis a mudan?as ambientais. A redu??o de esp?cies pode ser decorrente de a??es antr?picas relacionadas ? devasta??o de ?reas naturais para utiliza??o agr?cola, garimpos ou pastagens. Nesse contexto, inexistem estudos que abordem as intera??es e reconhecimento de comunidades agr?colas e os anf?bios anuros, em especial em regi?o semi?rida do nordeste brasileiro, a exemplo daquelas sob influ?ncia da Bacia Hidrogr?fica do Rio S?o Francisco, onde comunidades vivem da agricultura e pecu?ria como principais atividades econ?micas, utilizando a ?gua daquele rio para irriga??o. A regi?o de Itaparica e respectivos sistemas agr?colas constituem parte de um projeto de pesquisa amplo e binacional, Brasil ? Alemanha (INNOVATE Project), o qual tem por objetivo geral identificar os m?ltiplos usos da ?gua do reservat?rio e analisar as inova??es referentes ao manejo dos recursos aqu?ticos e terrestres, e de cujo subprojeto, SP-4 - Biodiversidade e Servi?os do Ecossistema, esta tese ? decorrente. Neste cen?rio e contexto, o objetivo geral desta tese foi registrar, descrever e analisar qualitativamente o conhecimento de comunidades locais sobre as esp?cies de anf?bios anuros e sua biologia, visando o reconhecimento destes como biocontroladores de insetos pragas nos sistemas agr?colas, em substitui??o aos agroqu?micos, a fim de promover a conserva??o dos anuros e melhorar a qualidade de vida dos agricultores locais, em prol da sustentabilidade. As comunidades estudadas, Petrol?ndia e Itacuruba, est?o situadas ?s margens do m?dio Rio S?o Francisco, Estado de Pernambuco, onde o trabalho de campo foi efetuado durante quatro excurs?es, duas a cada um dos munic?pios estudados, entre os meses de novembro/2012 a abril/2013. Foram entrevistados 369 agricultores, com idades entre 18 e 65 anos, todos do sexo masculino, sobre as pr?ticas agr?colas e biologia das esp?cies de anf?bios anuros. Para a identifica??o das esp?cies de anf?bios anuros, foram inicialmente realizados est?mulos visuais, com o aux?lio de fotografias de esp?cies comuns em ?reas de caatinga. Este m?todo serviu para nortear os entrevistados contextualmente, assegurando que as entrevistas fossem direcionadas ao mesmo objeto (esp?cies de anf?bios anuros), a fim de coletar dados etnobiol?gicos precisos. Posteriormente, as esp?cies de anf?bios anuros mais citadas nas entrevistas foram coletadas atrav?s de busca ativa ao longo das ?reas agr?colas e Caatinga circunvizinha (parte dos dados secund?rios do Innovate Project). Para caracterizar os locais de reprodu??o e desenvolvimento dos anf?bios anuros nas ?reas agr?colas, foram elaborados mapas orais, obtidos a partir de turn?s guiadas com os agricultores que citaram a exist?ncia de s?tios reprodutivos em suas ?reas de cultivo, os quais foram georreferenciados. Os agricultores reconheceram e nomearam oito etnoesp?cies, que correspondem a 13 esp?cies de anf?bios anuros, bem como seus principais locais de reprodu??o e desenvolvimento. A partir destas informa??es, foram elaborados dois mapas georreferenciados, relacionados principalmente aos locais de reprodu??o, os quais demonstram 13 s?tios de reprodu??o em Itacuruba e seis em Petrol?ndia/PE. As respostas dos agricultores tamb?m possibilitaram identificar os valores atribu?dos aos anf?bios nas ?reas agr?colas, por meio do conhecimento acerca dos seus h?bitos alimentares, ao citarem que os anf?bios comem principalmente insetos (65% dos agricultores de Petrol?ndia, n=238; 58% em Itacuruba, n=131), demonstrando conhecimento acerca da participa??o destes animais no equil?brio ambiental e poss?vel controle de pragas agr?colas. N?o se constataram diferen?as de concep??o local, quanto ? import?ncia dos anf?bios no controle de pragas, entre sistemas irrigados e n?o irrigados. Os agricultores de Petrol?ndia (83%, n=238) e de Itacuruba (78%, n=131) relataram ter identificado, por observa??es in loco, que os anf?bios se alimentam de pragas agr?colas locais, possibilitando inferir que s?o biocontroladores dessas pragas. Tamb?m foram bastante enf?ticos ao afirmarem que os anf?bios devem ser preservados (78%, n=238 em Petrol?ndia; 73%, n=131 em Itacuruba), principalmente por se alimentarem de insetos pragas, e por n?o constituir amea?a ?s comunidades agr?colas. Estas respostas possibilitaram a elabora??o de uma cartilha ilustrada, em literatura de Cordel, a qual ser? distribu?da e divulgada em escolas, cooperativas agr?colas e associa??es comunit?rias dos munic?pios estudados, como instrumento de populariza??o da Ci?ncia sobre a import?ncia dos anf?bios no biocontrole de pragas agr?colas, em substitui??o ao uso de Agroqu?micos. Entretanto, apesar de os agricultores locais destacarem a import?ncia dos anf?bios e de sua preserva??o para controle de insetos pragas, ainda n?o os aceitam como aliados no controle natural de pragas em substitui??o aos agroqu?micos. A populariza??o da Ci?ncia por meio do Cordel Ilustrado ? o primeiro passo em prol da sustentabilidade por meio de alternativas vi?veis e pr?ticas agr?colas sustent?veis, que visem ? conserva??o das esp?cies e das atividades locais. / Historically, agriculture in the semiarid region of northeastern Brazil is nomadic, traveling or migration ; farmers deforestation, burn, fertilize the soil, plant for a short period and migrate to other areas where repeat the same practice , and use significant amounts of pesticides for combating pests. This activity has caused significant loss of quality of life and local biodiversity. In the context of biodiversity, Amphibian Anura stand out, which include frogs, toads and jewelry, are relevant in chains and ecological webs, especially because they are bio-indicators of environmental quality and biocontrol of insect populations, establishing a natural control pests in agricultural areas. Despite their importance in the last two decades there has been decline and disappearance of some species of Anura in Brazil and around the world; since they are sensitive to environmental changes, reducing species may be due to human activities related to the devastation of natural areas for use of agricultural land, mining or pasture. In this context, there are no studies that address on the interactions and recognition of agricultural communities and amphibians, especially in semi-arid region of northeastern Brazil, like those under the influence of River Basin San Francisco, where communities living from agriculture and livestock as main economic activities using the water of this river for irrigation. Itaparica region and their agricultural systems are part of a broad research project and binational, Brazil - Germany (INNOVATE Project), which has the objective to identify the multiple reservoir water uses and analyze innovations for the management of resources water and land, and whose subproject, SP-4 - Biodiversity and Ecosystem Services, this thesis is integral. In this scenario and context, the general objective of this thesis was to record, describe and qualitatively analyze the knowledge of local communities on the species of amphibians and their biology, aimed at recognizing these as insect biocontrol pests in agricultural systems in place to agrochemicals, to promote the conservation of frogs and improve the quality of life of local farmers for sustainability. The communities studied, Petrol?ndia and Itacuruba, are situated to the average margins S?o Francisco River, State of Pernambuco, where the fieldwork was carried out for four trips, two to each of the cities studied, between the months from November / 2012 to April / 2013. A total of 369 male farmers were interviewed, whose ages ranged from 18 to 65 years old.They were asked about agricultural practices and biology of species of amphibians. For the identification of the species, they were initially made visual stimuli, with the help of photographs of common species in areas of caatinga. This method served to guide respondents contextually, ensuring that the interviews were directed to the same object (anurans) in order to collect accurate data ethnobiological. Later, the species of amphibians most mentioned in the interviews were collected by active search throughout the agricultural areas and Caatinga surrounding (part of secondary data from Project Innovate). To characterize the breeding sites and development of anurans in agricultural areas were prepared oral maps obtained from conducted tours to farmers who cited the existence of breeding sites in their areas of cultivation, which were georeferenced. Local farmers recognized and named eight ethnospecies, which correspond to 13 species of amphibians, as well as major sites of reproduction and development. From this information, we were prepared two georeferenced maps, mainly related to breeding sites, which show 13 breeding sites in Itacuruba six in Petrol?ndia / PE. The responses of farmers also possible to identify the values assigned to amphibians in the agricultural areas, through knowledge about their eating habits, to cite that amphibians eat mostly insects (65% of farmers Petrol?ndia, n = 238; 58% in Itacuruba, n = 131), demonstrating knowledge of the participation of these animals in the environmental balance and can control agricultural pests. Not found-site design differences, the importance of amphibians in pest control, between irrigated and non-irrigated systems. Farmers Petrol?ndia (83%, n = 238) and Itacuruba (78%, n = 131) reported having identified by observations on the spot that amphibians feed on local agricultural pests, making it possible to infer that are biocontrol of these pests. They were also quite emphatic in stating that amphibians should be preserved (78%, n = 238 in Petrol?ndia, 73%, n = 131 in Itacuruba), mainly feed on insect pests, and not pose a threat to agricultural communities. These responses allowed for the creation of an illustrated booklet in Cordel literature, which will be distributed and disseminated in schools, agricultural cooperatives and community associations of municipalities studied, such as the Science popularization instrument on the importance of amphibians in biocontrol of agricultural pests, replacing the use of agrochemicals. However, although local farmers stress the importance of Amphibian and its preservation to control insect pests, they do not accept them as allies in natural pest control to replace agrochemicals. The popularization of science through the Cordel Illustrated is the first step towards sustainability by sustainable agricultural and viable alternatives practices aimed at the conservation of species and local activities.

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