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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

Morfometria, varia??o anual no peso e demografia do Tico-tico-rei-cinza (Lanio pileatus: thraupidae) em dois ambientes de caatinga no nordeste do Brasil

Damasceno, Jo?o Paulo Tavares 17 April 2015 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-04-25T23:51:26Z No. of bitstreams: 1 JoaoPauloTavaresDamasceno_DISSERT.pdf: 1717560 bytes, checksum: b898f10cb3d5f9ec7725a2ee9cff784d (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-04-28T19:48:29Z (GMT) No. of bitstreams: 1 JoaoPauloTavaresDamasceno_DISSERT.pdf: 1717560 bytes, checksum: b898f10cb3d5f9ec7725a2ee9cff784d (MD5) / Made available in DSpace on 2016-04-28T19:48:29Z (GMT). No. of bitstreams: 1 JoaoPauloTavaresDamasceno_DISSERT.pdf: 1717560 bytes, checksum: b898f10cb3d5f9ec7725a2ee9cff784d (MD5) Previous issue date: 2015-04-17 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / A caatinga ? considerada o ?nico bioma exclusivamente brasileiro, apresentando uma ?rea total de 735.000km?. Estima-se que cerca 59% desta ?rea j? tenham sido removidos e apenas 2% encontram-se protegidos em unidades de preserva??o. A regi?o ? caracter?stica pela forte sazonalidade e heterogeneidade em seus ambientes. Objetivamos neste trabalho gerar informa??es sobre padr?es morfol?gicos e populacionais de Lanio pilatus em duas ?reas de caatinga da Esta??o Ecol?gica do Serid? (ESEC ? Serid?), Serra Negra do Norte - RN. A coleta de dados foi realizada em seis fases entre julho de 2012 e dezembro de 2014, contemplando os finais dos per?odos secos e chuvosos da regi?o. As capturas foram realizadas com redes ornitol?gicas e os indiv?duos capturados foram marcados com anilhas met?licas e medidos (peso, comprimento da asa, da cauda, do tarso, do c?lmen exposto e bico a ponta da narina). Observamos que apenas machos da ?rea aberta variam em peso durante o per?odo seco e chuvoso, jovens foram significativamente menores para todas as medidas avaliadas, e machos foram maiores que f?meas em tr?s caracter?sticas (peso, comprimento da asa e da cauda) na ?rea aberta e apenas em uma (comprimento da asa) na ?rea fechada. Os par?metros populacionais foram gerados a partir da t?cnica de marca??o-captura-recaptura e an?lise por meio do programa MARK, utilizando as t?cnicas de Desenho Robusto e CJS. A sobreviv?ncia, a probabilidade de detec??o e as estimativas populacionais variaram com o tempo. Apenas indiv?duos da ?rea aberta flutuaram em suas estimativas durante o estudo. De forma geral, o ambiente foi um grande mediador dos resultados encontrados o que aumenta a necessidade de mais estudos sobre a hist?ria de vida das esp?cies na regi?o. / The caatinga is considered the only exclusively Brazilian biome, with a total area of 735.000km?. It is estimated that about 59% of this area has already been removed and only 2% are protected in conservations units. The region is characteristic by strong seasonality and heterogeneity in their environments. This paper sets generate information on morphological and population patterns Lanio pilatus in two areas of caatinga of Esta??o Ecol?gica do Serid? (ESEC ? Serid?), Serra Negra do Norte - RN. Data collection was performed in six phases between July 2012 and December 2014, covering the end of the dry and rainy seasons in the region. The captures were performed with nets and individuals captured were marked with metal rings and measured (weight, wing length, tail, tarsus, culmen and tip of the bill to nostril). Through these measures, we observed that only males of open area range in weight during the dry and rainy season, youngs were significantly lower for all parameters measured, and males were larger than females in three characteristics (weight, wing length and tail) in open area and only one (wing length) in the closed area. The population parameters were generated from the mark-capture-recapture technique by program MARK, using the techniques of robust design and CJS. The survival probability of detection and population estimates varied with time. Only individuals of open area fluctuated in their estimates during the study. Overall, the environment was a great mediator of results which increases the need for more studies on the life history of the species in the region.

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