Grassland Vegetation Dynamics
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Stability of Soil Moisture Patterns Retrieved at Different Temporal Resolutions in a Tropical Watershed
ABSTRACT Above and underground hydrological processes depend on soil moisture (SM) variability, driven by different environmental factors that seldom are well-monitored, leading to a misunderstanding of soil water temporal patterns. This study investigated the stability of the SM temporal dynamics to different monitoring temporal resolutions around the borde
Rev. Bras. Ciênc. Solo. Publicado em: 27/06/2019
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2. Seasonal dynamics of vegetation indices as a criterion for grouping grassland typologies
ABSTRACT: This study aimed to characterize the average seasonal pattern of the vegetation in southern grassland in Brazil, and the variability found in the time series of vegetation indices. It also sought to identify similarities in the seasonal pattern of different grassland typologies. Moderate Resolution Imaging Spectroradiometer (MODIS), Normalized Diff
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-02
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3. ESTUDO DE COMUNIDADES VEGETAIS CAMPESTRES NA REGIÃO DO ALTO CAMAQUÃ, RIO GRANDE DO SUL / GRASSLAND COMMUNITIES EVALUATION AT ALTO CAMAQUÃ, RIO GRANDE DO SUL
A compreensão da dinâmica vegetacional pode facilitar as tomadas de decisões a adoção de novas práticas de manejo, visando um melhor aproveitamento dos recursos disponíveis em áreas de pastagem natural. Este estudo teve como objetivo avaliar a dinâmica vegetacional de uma pastagem natural submetida aos fatores adubação e pastejo, em quatro locais
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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4. ALTERNATIVAS DE MANEJO DE PASTAGEM NATURAL SUBMETIDA A PASTOREIO ROTATIVO / MANAGEMENT ALTERNATIVES IN NATURAL GRASSLAND SUBMITTED TO ROTATIONAL GRAZING
Este trabalho teve por objetivo avaliar alternativas de manejo de pastagem natural. Foi avaliada a dinâmica da vegetação por um período de seis anos de uma pastagem natural, submetida ao longo de 16 anos a tratamentos de fogo e pastejo. Além disso, foram avaliadas a produção e o comportamento de novilhas de corte dos 12 aos 18 meses de idade, mantidas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
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5. Características estruturais, fitossociológicas e produtividade de um campo sobre basalto supercial / Phytosociological, structural and productivity characteristics of a native pasture on basaltic litolic soil
Few studies had adequately described the characteristics and productive capacity of natural grasslands associated to shallow basaltic soils in Pampa Biome. This study was carried out on natural pasture at Santana do Livramento municipality, in the Campanha region of Rio Grande do Sul, Brazil aiming to describe their floristic and structural diversity and to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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6. Campos de solos arenosos do Sudoeste do Rio Grande do Sul:aspectos florísticos e adaptativos
Extensas áreas de campo do sudoeste do Rio Grande do Sul, no Bioma Pampa, ocorrem sobre solos arenosos suscetíveis ao processo de arenização. Nesses campos predominam condições de déficit hídrico, irradiação intensa, temperaturas extremas, baixa fertilidade do solo e uso pecuário. O estudo teve como objetivos, conhecer a diversidade florística do
Publicado em: 2010
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7. EVALUATION OF DYNAMICS AND DIVERSITY OF A NATURAL PASTURE UNDER DIFFERENT DISTURBANCE / AVALIAÇÃO DA DINÂMICA E DA DIVERSIDADE DE UMA PASTAGEM NATURAL SUBMETIDA A DIFERENTES DISTÚRBIOS
Dynamics of species, families and plant functional types (PFTs), and diversity of a natural grassland submitted or not to burning and grazing, in different relief positions (concave a convex slope) were evaluated. Treatments consisted of the associations of those three factors, in a completely randomized design, with variable number of replicates, from two t
Publicado em: 2009
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8. Research priorities for grassland science: the need of long term integrated experiments networks
Grasslands have to be considered not only as a mean for providing foods for domestic herbivore but also as an important biome of terrestrial biosphere. This function of grasslands as an active component of our environment requires specific studies on the role and impact of this ecosystem on soil erosion and soil quality, quality and quantity of water resourc
Revista Brasileira de Zootecnia. Publicado em: 2007-07
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9. ANIMAL PRODUCTION AND VEGETATION DYNAMICS IN NATURAL GRASSLANDS UNDER DIFFERENT MANAGEMENT SYSTEMS / PRODUÇÃO ANIMAL E DINÂMICA VEGETACIONAL EM PASTAGEM NATURAL SOB DIFERENTES SISTEMAS DE MANEJO
The trial was accomplished in the Fundação Estadual de Pesquisa Agropecuária (FEPAGRO) in São Gabriel, RS, to evaluate the performance of sheep and lambs in natural grassland, managed with different grazing systems and, pasture improvement with fertilization and introduction of cool season species, and to verify the effects of those different managements
Publicado em: 2006
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10. Estudo da taxocenose de crisopÃdeos (Neuroptera: Chrysopidae) em ecossistemas naturais e agropastoris / Taxocenosis of green lacewings (Neuroptera: Chrysopidae) in natural and agricultural ecosystems
This research was carried ou to a) verify the community structure of these predators in forest fragments, open sites and agroecosystems; b) analyze the influence of the size and complexity of forest fragments on the richness and abundance of species; c) study the interaction on communities in forest areas, forest edges and adjacent agroecosystems; d) study t
Publicado em: 2006
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11. Floristica e caracterização das comunidades vegetais da planice costeira de Picinguaba, Ubatuba-SP
In the present study, we examine a better floristic, base of the severa I communities better delimited that compose the vegetation complex of the coastal plain of Picinguaba. That plain possesses about 8 Krn2, situated in the township of Ubatuba, northern coast of the State of São Paulo, (23°20 -23°22 S /44°48 -44°52 W). This area is a Unit of Conservat
Publicado em: 1999
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12. Food-web structure and ecosystem services: insights from the Serengeti
The central organizing theme of this paper is to discuss the dynamics of the Serengeti grassland ecosystem from the perspective of recent developments in food-web theory. The seasonal rainfall patterns that characterize the East African climate create an annually oscillating, large-scale, spatial mosaic of feeding opportunities for the larger ungulates in th
The Royal Society.