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Germinacao De Sementes E Desenvolvimento De Plantulas De Kielmeyera Coriacea Mart
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Book Synopsis Germinacao de sementes e desenvolvimento de plantulas de Kielmeyera coriacea Mart by : S.B. Dionello
Download or read book Germinacao de sementes e desenvolvimento de plantulas de Kielmeyera coriacea Mart written by S.B. Dionello and published by . This book was released on 1978 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kielmeyera coriacea Mart., arvore caracteristica dos cerrados, popularmente conhecida pelo nome de pau-santo, pau-de-Sao Jose e saco-de-boi foi a especie escolhida para a realizacao de alguns estudos eco-fisiologicos basicos. Neste trabalho procurou-se obter informacoes a respeito das condicoes mais favoraveis a germinacao das sementes, do desenvolvimento da planta, da sobrevicencia em condicoes naturais do cerrado e de sua tolerancia a queimada. Os resultados obtidos dos experimentos de laboratorio e de campo e de observacoes, foram os seguintes: - os frutos capsulares possuem cerca de 60 sementes no seu interior. O conteudo de agua das sementes e de aproximadamente 6% (do peso seco) e nao possuem dormencia. Ate pelo menos 16 meses de estocagem, as sementes sao altamente viaveis. - os frutos maduros apresentam cerca de 32% de sementes imperfeitas, 18% de sementes brocadas e 49% de sementes boas. - as sementes apresentam, em relacao ao peso seco 3,24% de nitrogenio, 20,25% de proteina, 0,53% de fosforo, 1% de calcio, 0,25% de potassio, 3,26% de cinzas e 35% de oleo. - as sementes germinam tanto no claro como no escuro sendo sua germinacao ligeiramente favorecida pela presenca da luz. - os pontos cardeias termometricos para a germinacao das sementes sao: minima ao redor de 15oC, maxima ao redor de 35oC e a faixa de temperatura otima entre 22oC e 27oC. na temperatura de 27oC foi encontrado o menor valor do tempo medio de germinacao: 6,9 dias e geminabilidade de 99%. - tratamentos com choques termicos ate 90oC (ate 15 minutos de exposicao) nao influenciam significativamente na germinabilidade das sementes. A 100oC a germinacao e completamente inibida.
Book Synopsis Germinacao de sementes e desenvolvimento de plantulas de Kielmeya coriacea Mart by : S. B. Dionello
Download or read book Germinacao de sementes e desenvolvimento de plantulas de Kielmeya coriacea Mart written by S. B. Dionello and published by . This book was released on 1978 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology of Tropical Savannas by : B. J. Huntley
Download or read book Ecology of Tropical Savannas written by B. J. Huntley and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis World Savannas by : Jayalaxshm Mistry
Download or read book World Savannas written by Jayalaxshm Mistry and published by Routledge. This book was released on 2014-09-15 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: An interdisciplinary text on the world's savannas, covering the geography, ecology, economics and politics of savanna regions. Savannas are a distinct vegetation type, covering a third of the world's land surface area and supporting a fifth of the world's population. There has been a wide range of literature on the subject, but the majority of work has focused on the ecology or development of savanna areas, ignoring the wider interdisciplinary issues affecting contemporary savannas. World Savannas aims to buck this trend, providing students with an up-to-date and comprehensive introduction to the global importance of savannas.
Book Synopsis Fire in the Tropical Biota by : Johann G. Goldammer
Download or read book Fire in the Tropical Biota written by Johann G. Goldammer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1977, the Volkswagen Foundation sponsored the first of a series of International Symposia on Fire Ecology at Freiburg University, Federal Republic of Germany. The scope of the congresses was to create a platform for researchers at a time when the science of fire ecology was not yet recognized and established outside of North America and Australia. Whereas comprehensive information on the fire ecology of the northern boreal, the temperate, and the mediter ranean biotas is meanwhile available, it was recognized that conside rable gaps in information exist on the role of fire in tropical und sub tropical ecosystems. Thus it seemed timely to meet the growing scientific interest and public demand for reliable and updated infor mation and to synthesize the available knowledge of tropical fire ecology and the impact of tropical biomass burning on global eco system processes. The Third Symposium on Fire Ecology, again sponsored by the Volkswagen Foundation and held at Freiburg University in May 1989, was convened to prepare this first pantropical and multidisci plinary monograph on fire ecology!. The book, in which 46 scientists cooperated, analyzes those fire-related ecosystem processes which have not yet been described in a synoptic way. Following the editor's concept, duplication at previous efforts in describing tropical vegeta tion patterns and dynamics was avoided. Extensive bibliographical sources are given in the reference lists of the chapters.
Book Synopsis A germinacao das sementes by : Luiz Gouvêa Labouriau
Download or read book A germinacao das sementes written by Luiz Gouvêa Labouriau and published by Organization of American States. This book was released on 1983 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Napaea written by and published by . This book was released on 1988 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acta amazonica written by and published by . This book was released on 1995 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each issue to contain material in each of seven subject fields: botany, forestry research, environmental sciences, phytochemistry, tropical medicine, zoology and technology.
Download or read book Ciência E Cultura written by and published by . This book was released on 1990 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brazilian journal of botany written by and published by . This book was released on 2000 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hoehnea written by and published by . This book was released on 2003 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Revista Ceres written by and published by . This book was released on 2008 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology and Conservation of Mountaintop grasslands in Brazil by : Geraldo Wilson Fernandes
Download or read book Ecology and Conservation of Mountaintop grasslands in Brazil written by Geraldo Wilson Fernandes and published by Springer. This book was released on 2016-04-20 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a pioneer attempt to bring forward the first synthesis on the most diverse and threatened mountain top vegetation of South America, the rupestrian grasslands. It brings to light the state of the art information on this ecosystem geology, soil formation and distribution, environmental filters that lead to biodiversity, species interactions and their fine tuned adaptations to survive the harsh mountain environment. The human dimensions of the rupestrian grassland are also addressed, including the anthropogenic threats that may irreversibly impact biodiversity and ecosystem services. The book also highlights the ongoing studies on ecological restoration and first attempt to model the impacts of climate change on its speciose biota.
Book Synopsis The Cerrados of Brazil by : Paulo S.
Download or read book The Cerrados of Brazil written by Paulo S. and published by Columbia University Press. This book was released on 2013-02-05 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: The massive grasslands of Brazil -- known as the cerrados -- which cover roughly a quarter of its land surface and are among the most threatened regions in South America, have received little media attention. This book brings together leading researchers on the area to produce the first detailed account in English of the natural history and ecology of the cerrado/savanna ecosystem. Given their extent and threatened status, the richness of their flora and fauna, and the lack of familiarity with their unique ecology at the international level, the cerrados are badly in need of this important and timely work.
Book Synopsis Contribuição ao conhecimento ecológico do cerrado by : Laércio Leonel Leite
Download or read book Contribuição ao conhecimento ecológico do cerrado written by Laércio Leonel Leite and published by . This book was released on 1996 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analise de vegetacao: Caracteristicas aerodinamicas de um Cerrado sensu stricto; Comparacao do Cerrado (Sensu stricto) nas Chapadas Pratinha e dos Veadeiros; Composicao floristica e estrutura da comunidade arboreo-arbustiva de um trecho da floresta de galeria da queda d'agua veu-de-noiva, Parque Nacional da Chapada dos Guimaraes, MT; Estrutura fitossociologica e fenologia de especies lenhosas de mata decidua em Uberlandia, MG; Fitossociologia de uma mata de galeria na Fazenda Sucupira do CENARGEN, Brasilia/DF; Ecofisiologia vegetal: A comparative study of different nitrogen fractions in three woody species of the Cerrado; Assimilacao de nitrato e taxas fotossinteticas de tres especies lenhosas de Cerrado; Autotoxidade e alelopatia em sementes de Solanum lycocarpum Hil. (Solanaceae); Crescimento e alocacao de biomassa de duas gramineas nativas do Cerrado; Comportamento de plantulas de Ormosia stipularis Ducke submetidas a diferentes niveis de sombreamento em viveiro; Fenologia e qualidade de sementes de Gymnopogon doellii - uma graminea ameacada de extincao; Germinacao de sementes de plantas medicinais nativas e espontaneas do Cerrado de Mato Grosso; Influencia do estadio de maturacao e do numero de carocos na espessura dos componentes do mesocarpo e no peso do fruto de pequi (Caryocar brasiliense Camb.); Interferencia do campim-gordura (Melinis minutiflora Beauv) no desenvolvimento de plantulas de embauba (Cecropia pachystachya Trecul); Resposta de algumas especies do estrato rasteiro de um cerrado a calagem e a adubacao; Interacoes entre animais e plantas; Arquitetura e riqueza de herbivoros em Ouratea hexasperma Baill. (Ochnaceae), em um cerrado da Reserva Ecologica do IBGE, Brasilia, DF; Composicao de herbivoros em plantas hospedeiras com latex: Lepidoptera em Kielmeyera spp. (Guttiferae); Especies de lagartas em Eryttroxylum spp. (Erythroxylaceae) em um cerrado de Brasilia; Frugivoria e dispersao de sementes por vertebrados do cerrado; Variacao individual na herbivoria e nas caracteristicas de Pterodon pubescens (Leguminosae) em um Cerrado de Brasilia; Populacoes e comunidades animal: A comunidade de morcegos do Distrito Federal: estrutura de guildas, uso do habitat e padroes reprodutivos; Abundancia, riqueza e selecao de habitat de pequenos mamiferos dos cerrados do Brasil Central; Caracterizacao da fauna de parasitoides (Hymenoptera) de lagartas, no cerrado de Brasilia; Caracterizacao das comunidades de macroinvertebrados bentonicos do Corrego Riacho Fundo, Brasilia, DF, visando a utilizacao destas como bioindicadores de ambientes alterados; Comunidade planctonicas na Bacia do Rio Descoberto, Distrito Federal; Dinamica populacional de um grupo de borboletas transparentes (Lepidoptera: nymphalidae: ithomiinae); Diversidade e parametros populacionais em comunidades de pequenos mamiferos do Brasil Central; Diversidade em uma comunidade de pequenos mamiferos de uma regiao de contato Caatinga-Cerrado; Influence of bordering vegetation, width, and state of conservation of gallery forest on the presence of small mammals; Macrofauna edafica invertebrada em areas de vegetacao nativa da regiao de cerrados; Ocorrencia de formigas (Hymenoptera: formicidae) e sucesso de sobrevivencia de algumas especies de Solenopsis e pheidole em ecossistemas antropicos do cerrado; Ocorrencia e distribuicao de moluscos na Bacia do Rio Maranhao, Brasilia, DF; Padroes de distribuicao e analise de canto em uma comunidade de anuros no Brasil Central; Padroes de riqueza de insetos em gradientes altitudinais na Serra do Cipo, Minas Gerais; Sobre os Braconidae (Hymenoptera) encontrados na regiao da Chapada dos Guimaraes - MT; Tabela de vida e curva de crescimento de Biomphalaria tenagophila, mutante albino; Comportamento e ecofisiologia animal: Analise do conteudo de pelotas de Tyto alba (Strigiformes, tytonidae) na Estacao Ecologica de Aguas Emendadas (Brasilia - DF); Correlacoes ecologicas entre ectoparasitas e aves de florestas de Minas Gerais; Estrategias de forrageamento e dieta em lagartos do Cerrado e Savanas Amazonicas; Estrategias de forrageamento e termorregulacao em lagartos do Cerrado e Savanas Amazonicas; Habito alimentar do Lobo-guara (Chrysocyon brachyurus), na Apa do Gama/cabeca do veado - DF; Habito alimentar de Lepomis macrochira em diferentes compartimentos do Lago Paranoa (Pisces, Centrarchidae); Observacoes preliminares sobre a atividade do mico-estrela (Callithrix penicillata) no Cerrado denso e Cerradao da Reserva Ecologica do IBGE, Brasilia, DF; Padroes reprodutivos de Arapapa (Cochlearius cochlearius) em cativeiro; Caracterizacao ambiental, conservacao e manejo; Avaliacao da acao antropica sobre as plantas do Cerrado com potencial economico; Dinamica de combustivel em uma area de campo sujo de cerrado submetida a queimada prescrita no final da estacao seca; Efeito da escavacao mecanica e da profundidade de corte sobre o nivel de compactacao de um latossolo no Distrito Federal, Brasil; Estoques de carbono em solos sob diferentes fitofisionomias de Cerrados; Estrutura de paisagem da vazante do Rio Araguaia; O uso do solo na regiao da Reserva Biologica do Cerrado de Emas (Pirassununga, SP) e seu atual papel como unidade de conservacao; Metodologia aplicada a ecologia: Adocao da tecnica de espectrorradiometria de reflexao como indicativo de recuperacao de areas degradadas; Correlacao entre esforco de coleta e incremento de especies e de individuos para a familia Saturniidae (Lepidoptera) em duas areas de Cerrado; Identificacao de fisionomias de Cerrado com imagem indice de vegetacao.
Book Synopsis Biodiversity in Ecosystems by : Juan A. Blanco
Download or read book Biodiversity in Ecosystems written by Juan A. Blanco and published by BoD – Books on Demand. This book was released on 2015-04-17 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term biodiversity has become a mainstream concept that can be found in any newspaper at any given time. Concerns on biodiversity protection are usually linked to species protection and extinction risks for iconic species, such as whales, pandas and so on. However, conserving biodiversity has much deeper implications than preserving a few (although important) species. Biodiversity in ecosystems is tightly linked to ecosystem functions such as biomass production, organic matter decomposition, ecosystem resilience, and others. Many of these ecological processes are also directly implied in services that the humankind obtains from ecosystems. The first part of this book will introduce different concepts and theories important to understand the links between ecosystem function and ecosystem biodiversity. The second part of the book provides a wide range of different studies showcasing the evidence and practical implications of such relationships.
Download or read book Revista Brasileira de biologia written by and published by . This book was released on 1996 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
