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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

Rubiaceae Juss. nas campinaranas do baixo Rio Negro e biologia reprodutiva de Pagaema guianensis Aubl.

Alves, Jhennyffer de Melo 23 August 2016 (has links)
Submitted by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2017-06-19T18:08:31Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação - Jhennyffer M. Alves.pdf: 1360098 bytes, checksum: d04a9926b48c2542bb09c601b3deef18 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2017-06-19T18:08:43Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação - Jhennyffer M. Alves.pdf: 1360098 bytes, checksum: d04a9926b48c2542bb09c601b3deef18 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2017-06-19T18:08:53Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação - Jhennyffer M. Alves.pdf: 1360098 bytes, checksum: d04a9926b48c2542bb09c601b3deef18 (MD5) / Made available in DSpace on 2017-06-19T18:08:53Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação - Jhennyffer M. Alves.pdf: 1360098 bytes, checksum: d04a9926b48c2542bb09c601b3deef18 (MD5) Previous issue date: 2016-08-23 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The vegetative formations called campinaranas occupy about 7% of the Amazon and its greatest extent is in the Rio Negro basin. This work conducted a floristic survey and taxonomic treatment of species of Rubiaceae in campinaranas from Tupé Sustainable Development Reserve, and a study of the reproductive biology of Pagamea guianensis was performed in a campinarana spot in the municipality of Iranduba - AM. In campinarana environments from Sustainable Development Reserve of Tupe, were sampled fifteen species in ten genera: Borreria alata, B. verticillata, Duroia saccifera, Ixora intensa, Palicourea corymbifera, P. nitidella, Psychotria hoffmanseggiana Remijia amazonica, Sabicea amazonensis, Pagamea duckei, P. guianensis, Palicourea anisoloba, P. virens and Sipanea pratensis, being the last six new records for the reserve. Pagamea guianensis has an annual flowering cycle with intermediate or seasonal duration, has diclinous flowers, with longistylous and brevistylous morphs. In both morphs rudiments of reproductive structures as pistillodes and staminodes are observed, being a dioecious species. The species is generalist entomophilous, although bees were the main visitors (Augochloropsis sp., Mesonychium sp., Xylocopa (Schonnherria) muscaria and Apis mellifera). Wasps are the second most frequent group, represented by families Scoliidae, Pompilidae, Crabronidae and Sphecidae; followed by Diptera (Palpada nigripes and P. vinetorum. Pagamea guianensis is not apomictic, and only plants with pistillate flowers produce fruits, while in staminate flowers, only pollen is produced. Ramphocelus carbo was the only bird observed consuming its fruits, being its probable disperser / As formações vegetais denominadas campinaranas ocupam cerca de 7% da Amazônia e sua maior extensão encontra-se na bacia do Rio Negro. O presente trabalho trata do levantamento e tratamento taxonômico das espécies de Rubiaceae nas campinaranas da Reserva de Desenvolvimento Sustentável do Tupé e realizou o estudo sobre a biologia reprodutiva de Pagamea guianensis em uma mancha de campinarana no município de Iranduba - AM. Nas campinaranas da RDS do Tupé, foram amostradas 15 espécies distribuídas em 10 gêneros: Borreria alata, B. verticillata, Duroia saccifera, Ixora intensa, Kutchubea sericantha, Palicourea corymbifera, P. nitidella, Psychotria hoffmanseggiana, Remijia amazonica, Sabicea amazonensis, Pagamea duckei, P. guianensis, Palicourea anisoloba, P. virens e Sipanea pratensis, sendo as seis últimas novos registros para a reserva. Pagamea guianensis possui ciclo de floração anual com duração intermediaria ou sazonal, apresenta flores díclinas, apresentando morfos com longo e breve estilo. Em ambos os morfos são observados rudimentos de estruturas reprodutivas como pistilódio e estaminódio, ou seja, é uma espécie dioica. É entomófila generalista, contudo as abelhas foram os principais visitantes (Augochloropsis sp., Mesonychium sp., Xylocopa (Schonnherria) muscaria e Apis mellifera. As vespas são o segundo grupo mais frequente, representadas pelas famílias Scoliidae, Pompilidae, Crabronidae e Sphecidae, seguidas pelos dípteros (Palpada nigripes e P. vinetorum). Pagamea guianensis não é apomítica e apenas as plantas com flores pistiladas produziram frutos, enquanto que as flores estaminadas, apenas pólen. Ramphocelus carbo, foi a única ave observada consumindo seus frutos, podendo ser o possível dispersor.
2

Autoecologia de Baccharis platypoda DC. (Asteraceae): distribui??o espacial, fenologia e herbivoria

Fonseca, Darliana da Costa 27 July 2012 (has links)
Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T13:49:38Z No. of bitstreams: 5 1.pdf: 5282104 bytes, checksum: 5079ffdcbf2b7fa8508a090d60e3bc93 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T17:37:51Z (GMT) No. of bitstreams: 5 1.pdf: 5282104 bytes, checksum: 5079ffdcbf2b7fa8508a090d60e3bc93 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-01-23T17:37:51Z (GMT). No. of bitstreams: 5 1.pdf: 5282104 bytes, checksum: 5079ffdcbf2b7fa8508a090d60e3bc93 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / O presente trabalho teve como objetivo compreender alguns par?metros acerca da hist?ria natural da esp?cie Baccharis platypoda, um arbusto dioico pertencente ? fam?lia Asteraceae, com indiv?duos masculinos e femininos que apresentam dimorfismo sexual e habitam ?reas de campo rupestre, campos e bordas de matas ciliares. Para compreender alguns pontos sobre sua autoecologia, foram analisadas a distribui??o espacial, a fenologia e as intera??es ecol?gicas entre a esp?cie e insetos end?fagos. O estudo foi realizado em tr?s ?reas pertencentes ? Universidade Federal dos Vales do Jequitinhonha e Mucuri ? UFVJM, localizados no Campus JK, pr?ximo ao C?rrego do Soberbo. A ?rea ? composta por mosaicos de vegeta??o, onde h? predom?nio de afloramentos rochosos e campos ?midos. Em cada ?rea, foram selecionados dez indiv?duos de B. platypoda, sendo cinco indiv?duos de cada sexo, onde, por um per?odo de um ano (set./2010 a set/2011) foram feitas visitas quinzenais para a observa??o dos est?gios fenol?gicos. Nesse per?odo, foram coletados cap?tulos quinzenalmente para cria??o de insetos end?fagos em recipientes vedados com algod?o e que, ap?s a eclos?o, foram conservados em ?lcool 70%; os cap?tulos foram dissecados para an?lise dos danos ?s estruturas florais. Para o estudo da distribui??o espacial, todos os indiv?duos foram localizados por meio das coordenadas x e y de cada planta, com altura ?30 cm atrav?s das dist?ncias, obtidas com uma trena, e identificados quanto ao sexo ou como jovem, pela aus?ncia de estruturas reprodutoras. O padr?o de distribui??o espacial foi determinado atrav?s da Fun??o K de Ripley univariada e bivariada, enquanto que os padr?es fenol?gicos foram determinados atrav?s da an?lise de intensidade de Fournier, correla??o de Spearman e an?lise circular. O padr?o de herbivoria foi analisado atrav?s da an?lise de regress?o linear, teste de Kruskal-Wallis e an?lise de agrupamento pelo m?todo de Two-Way-joining. Foi aplicado o teste de qui-quadrado para o estudo de distribui??o espacial e para o padr?o de herbivoria. Baccharis. platypoda apresentou padr?o agregado com varia??es em escalas diferentes para jovens e adultos e semelhan?a espacial entre indiv?duos de ambos os sexos. No entanto, a independ?ncia espacial entre os indiv?duos da esp?cie se mostrou uma constante. A fenologia reprodutiva da esp?cie esteve associada a algumas vari?veis ambientais (precipita??o e temperatura), enquanto que a fenologia vegetativa, de modo geral, apresentou-se relacionada ? fenologia reprodutiva das esp?cies. Insetos end?fagos apresentaram prefer?ncias quanto ao sexo e est?gio fenol?gico dos cap?tulos, havendo maior preda??o em cap?tulos masculinos e em est?gios mais desenvolvidos. Assim, a esp?cie apresentou correla??o entre a sua distribui??o espacial, os est?gios fenol?gicos (principalmente a fenologia reprodutiva) e os padr?es de ataque de insetos end?fagos, sugerindo a utiliza??o deste conhecimento na elabora??o de poss?veis estrat?gias de preserva??o e manejo. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT This study has as its main goal the understanding of some parameters on the natural history of the Baccharis platypoda species, a unisexual bush belonging to the Asteraceae subdivision, in which both male and female single organisms present sexual dimorphism inhabiting in rupestrian field areas, fields and woodland ciliary edges. In order to have a better understanding on some issues of its auto ecology, spatial, phenology, and ecological interactions between the species, endophage insects have been analyszed. This study took place in three areas belonging to UFVJM - Universidade Federal dos Vales do Jequitinhonha e Mucuri, situated at the JK Campus, by the Soberbo Stream. The area is composed of a miscellany vegetation with the prevalence of protruding rocks and wet fields. Ten B. platypoda organisms were selected from each one of these areas, five from each gender. During one year from september, 2010 to september, 2011 biweekly inspections for the watch of phenological stages were made. During this period of time, biweekly chapters for the production of endophage insects were gathered in cotton sealed containers preserved in alcohol after emergence. The chapters were dissected for the analysis of possible floral composition damages. For the spatial distribution study all the organisms were found through the use of X and Y reference point of each plant with height of 30 cm or over, tape measured, identified as to gender or youth due to absence of reproductive compositions. The spatial distribution pattern was established through the use of Ripley's K Function univariate and bivariate, whereas the phenological patterns were determined through the analysis of Fournier intensity, Spearman's corelation and circular analysis. The herbivory pattern was analyzed through the linear regression analysis, Kruskal-Wallis's test, and the Two-Way-joining method. The chi-square test was used for the study of spatial distribution and for the herbivory pattern. Baccharis. platypoda showed aggregate pattern with variations in different ranges both for young and adults, and also spatial likeness with organisms of both genders. However, there was a steady spatial independence among the organisms of the species. The species reproductive phenology was associated to some environmental variations (precipitation and temperature), whereas the vegetative phenology as a whole was related to the reproductive species phenology. Endophage insects showed preferences as to genger and phonological chapter stages; there was more predation in male chapters in more developed stages. Thus, the species presented correlation among its spatial distribution, phenological stages (mainly the reproductive phenology) and the patterns of phenological insects, suggesting the use of this knowledge in the elaboration of possible strategies for preservation and management.

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