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Ano 2021 (10) 2020 (5) 2019 (9) 2018 (10) 2017 (5) 2016 (10) 2015 (8) 2014 (7) 2013 (11) 2012 (8) 2011 (13) 2010 (10) 2009 (10) 2008 (8) 2007 (13) 2006 (3) 2005 (16) 2004 (5) 2003 (1) 2002 (3) Mais... País Brazil (193) Netherlands (8) Chile (6) Mexico (6) Argentina (4) Canada (2) United States (2) Mais... Idioma Português (135) Inglês (68) Espanhol (10)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 221 Primeira ... 1 2 3 4 5 6 7 8 9 ... Última A dinâmica da água em microbacias hidrográficas reflorestadas com eucalipto Ciências Agrárias Oleriano, Eliseu dos Santos; Dias, Herly Carlos Teixeira. The importance of the water in the current geo-political context turns it into a research theme that focuses on conserving its quality and improving its use conditions in certain systems. The hidrologic cycle consists of water exchanges among rivers, lakes, and oceans, as well as atmosphere and soil. The species of the gender eucalyptus possess a very fast growth rate in relation to native species, what causes a large demand for water, even though their water use efficiency is better. As well as any vegetable species, the eucalyptus uses water to satisfy their physiologic demands, promoting its growth. As a result eucalyptus promotes reduction in the flow of water in watercourses. Areas covered with forest plantations, besides improving the landscape as a... Tipo: Article Palavras-chave: Hidrologic cycle; Microbacia; Eucalipto; Florestas plantadas; Ciclo hidrológico; Small watershed; Eucalyptus; Forest plantation. Ano: 2007 URL: http://hdl.handle.net/2315/102 Fronteira de expansão dos plantios de eucalipto no geoecossistema do médio vale do rio Paraíba do Sul (SP/RJ) Ciências Agrárias Vianna, Lílian Gabriela Gomes; Sato, Anderson Mululo; Fernandes, Manoel do Couto; Coelho Netto, Ana Luiza. Since early 21 century the landscape mosaic of middle Paraíba do Sul river valley (MPSRV) has been rapidly modified by spreading of Eucalyptus patches in substitution to cattle grazing grasslands. This work aims to recognize the modifications caused by the insertion of this new economical cycle in MPSRV landscape mosaic. The study area is located between Mar and Mantiqueira range, including Sesmarias, Barreiro de Baixo and Bananal drainage basins, where previous studies have been conducted. A headwater zone of a first order drainage basin in Sesmarias basin was chosen in 2006 to measure Eucalyptus plantations hydrological responses to biota-soil-water interactions. Two use and cover maps (2000 and 2007 years) were made using Landsat-7 and Landsat-5 images,... Tipo: Article Palavras-chave: Eucalyptus; Landsat; Fragmentos florestais; Gramíneas; Uso e cobertura; Dinâmica da paisagem. Ano: 2007 URL: http://hdl.handle.net/2315/122 Fertilización con potasio y boro en plantaciones forestales comerciales de Eucalyptus spp. en el sureste mexicano. Colegio de Postgraduados Rodríguez Juárez, Mitzy Irais. El presente estudio se realizó con la finalidad de conocer el efecto de la adición de B y K sobre el crecimiento de Eucalyptus grandis y E. urophylla en plantaciones forestales comerciales de la empresa Forestaciones Operativas de México, S.A. de C.V. (FOMEX) en Huimanguillo, Tabasco. Se eligieron 199 árboles de E. urophylla y 239 de E. grandis que recibieron durante el establecimiento diferentes dosis de K y B, a los cuales se les midieron diámetro y altura a las edades de 1.5, 4.5 y 11 años. El K no tuvo efecto sobre ninguna especie en ninguna variable, por lo cual se realizó un análisis por nivel de B en E. urophylla, dado que fue la única especie que respondió a este nutrimento. Además se realizó un muestreo destructivo en el que se dividió al árbol... Palavras-chave: Plantaciones comerciales; Crecimiento; Biomasa aérea; Nutrimentos; Eucalyptus; Commercial forestry plantations; Tree growth; Aerial biomass; Nutrients; Forestal; Maestría. Ano: 2013 URL: http://hdl.handle.net/10521/2097 La reforestación en la formación de suelo a partir de tepetates. Colegio de Postgraduados Ávila Campuzano, Gabriela Rebeca. Para restaurar la vegetación de los lomeríos con tepetate y enmendar los problemas ambientales, en 1973 la Comisión del Plan Lago de Texcoco, inició un programa de conservación del suelo y del agua, a través de la reforestación en la zona de lomeríos y la pastización de las áreas bajas en los terrenos del Ex – Lago de Texcoco. Han pasado 37 años y son escasos los estudios donde se evalúe el impacto directo de las reforestaciones sobre la formación del suelo y la recuperación de sus funciones como parte del ecosistema. El presente estudio se realizó en la zona oriente del Estado de México, en donde se evaluaron los impactos edáficos de diferentes plantaciones (cedros, eucaliptos, pinos y casuarinas) sobre áreas con tepetate rojo. Se describieron tres... Palavras-chave: Cupressus; Pinus; Casuarina; Eucalyptus; Texcoco; Maestría; Edafología. Ano: 2011 URL: http://hdl.handle.net/10521/420 Características edafológicas y potencial productivo de Eucalyptus urophylla y E. grandis en Huimanguillo, Tabasco. Colegio de Postgraduados Pérez Sandoval, Reyna. Este trabajo se realizó en plantaciones establecidas por la empresa Forestaciones Operativas Mexicanas (FOMEX), en el Municipio de Huimanguillo, Tabasco, con la finalidad de encontrar relaciones entre variables del suelo superficial (0-20 y 20-40cm) y el crecimiento de plantaciones de Eucalyptus urophylla y E. grandis. Como índice de crecimiento se utilizó índice de sitio (IS) y las variables edáficas estudiadas fueron: pH, materia orgánica, fósforo extractable, los cationes intercambiables: K, Ca y Mg. También se consideró la capacidad de intercambio catiónico, porcentaje de saturación de bases, porcentaje de saturación de aluminio, densidad aparente, nitrógeno total, capacidad de retención de humedad a capacidad de campo y textura. Se colectaron... Palavras-chave: Plantaciones forestales; Suelo; Productividad; Eucalyptus; Indice de sitio; Forest plantations; Forest soils; Soil productivity; Eucalyptus; Site index; Maestría; Forestal. Ano: 2010 URL: http://hdl.handle.net/10521/190 La reforestación en la formación de suelo a partir de tepetates. Colegio de Postgraduados Ávila Campuzano, Gabriela Rebeca. Para restaurar la vegetación de los lomeríos con tepetate y enmendar los problemas ambientales, en 1973 la Comisión del Plan Lago de Texcoco, inició un programa de conservación del suelo y del agua, a través de la reforestación en la zona de lomeríos y la pastización de las áreas bajas en los terrenos del Ex – Lago de Texcoco. Han pasado 37 años y son escasos los estudios donde se evalúe el impacto directo de las reforestaciones sobre la formación del suelo y la recuperación de sus funciones como parte del ecosistema. El presente estudio se realizó en la zona oriente del Estado de México, en donde se evaluaron los impactos edáficos de diferentes plantaciones (cedros, eucaliptos, pinos y casuarinas) sobre áreas con tepetate rojo. Se describieron tres... Palavras-chave: Cupressus; Pinus; Casuarina; Eucalyptus; Texcoco; Maestría; Edafología. Ano: 2011 URL: http://hdl.handle.net/10521/420 Características edafológicas y potencial productivo de Eucalyptus urophylla y E. grandis en Huimanguillo, Tabasco. Colegio de Postgraduados Pérez Sandoval, Reyna. Este trabajo se realizó en plantaciones establecidas por la empresa Forestaciones Operativas Mexicanas (FOMEX), en el Municipio de Huimanguillo, Tabasco, con la finalidad de encontrar relaciones entre variables del suelo superficial (0-20 y 20-40cm) y el crecimiento de plantaciones de Eucalyptus urophylla y E. grandis. Como índice de crecimiento se utilizó índice de sitio (IS) y las variables edáficas estudiadas fueron: pH, materia orgánica, fósforo extractable, los cationes intercambiables: K, Ca y Mg. También se consideró la capacidad de intercambio catiónico, porcentaje de saturación de bases, porcentaje de saturación de aluminio, densidad aparente, nitrógeno total, capacidad de retención de humedad a capacidad de campo y textura. Se colectaron... Palavras-chave: Plantaciones forestales; Suelo; Productividad; Eucalyptus; Indice de sitio; Forest plantations; Forest soils; Soil productivity; Eucalyptus; Site index; Maestría; Forestal. Ano: 2010 URL: http://hdl.handle.net/10521/190 Zonificación de aptitud y productividad de suelos para plantaciones de eucalipto en Oaxaca y Veracruz Colegio de Postgraduados Delgado Caballero, Carina Edith. Este estudio es una contribución a la identificación de áreas aptas para el establecimiento de plantaciones forestales comerciales (PFC) de Eucalyptus en el sureste de México. El trabajo se realizó en plantaciones establecidas por la empresa Plantaciones de Tehuantepec (PLANTEH) en el Municipio de Santiago Yaveo, Oaxaca y en un área de influencia que comprende cinco municipios del Estado de Oaxaca (San Juan Guichicovi, Santiago Yaveo, San Juan Cotzocón, San Juan Mazatlán y Matías Romero) y siete en el Estado de Veracruz (Playa Vicente, Juan Rodríguez Clara, Santiago Sochiapan, San Juan Evangelista, Sayula de Alemán, Texistepec y Jesús Carranza). La identificación de áreas aptas se realizó considerando los requerimientos ecológicos de las especies mediante... Tipo: Tesis Palavras-chave: Eucalyptus; Evaluación multicriterio; Proceso de Análisis Jerarquizado (AHP); Lógica Fuzzy; Índice de Sitio; Maestría; Forestal; Multicriteria Evaluation; Analytic Hierarchy Process (AHP); Fuzzy logic; Site Index. Ano: 2007 URL: http://hdl.handle.net/10521/1676 Ecosystem service trade-offs and land use among smallholder farmers in eastern Paraguay Ecology and Society Grossman, Jake J.; University of Minnesota: Twin Cities, Department of Ecology, Evolution, and Behavior; gross679@umn.edu. The trade-off between economically critical provisioning services and environmentally sustaining supporting services often seems absolute. Yet, when land use is inefficient, managers may be able to increase provision of both economically and ecologically sustaining services. To explore such sustainable "win-win" outcomes, I present a model of predicted trade-offs of provisioning and supporting services on smallholder farms in eastern Paraguay. The spatially implicit model simulates smallholder parcels as mosaics of subsistence agriculture, cattle pasture, eucalyptus plantations, and/or natural forest cover, and predicts provisioning and supporting service supply depending on the relative abundance of each land-use type per parcel. I represent provisioning... Tipo: Peer-Reviewed article Palavras-chave: Agroforestry; Biodiversity; Cash crops; Efficiency frontier; Eucalyptus; Plantation forestry. Ano: 2015 Analysis of the Impact of the Use of Eucalyptus Biomass for Energy on Wood Availability for Eucalyptus Forest in Portugal: a Simulation Study Ecology and Society Barreiro, Susana ; Instituto Superior de Agronomia, Technical University of Lisbon; smb@isa.utl.pt. Tipo: Peer-Reviewed Reports Palavras-chave: Biomass residues; Energy production; Eucalyptus; Pulp and paper industry regional simulator; SIMPLOT. Ano: 2012 Biotransformation of 1,8-cineole, the main product of Eucalyptus oils Electron. J. Biotechnol. Rodríguez,Paula; Sierra,Wilson; Rodríguez,Sonia; Menéndez,Pilar. The forest industry in Uruguay has grown considerably during the last decade. Eucalyptus plantations account for 74% of the forested land, with Eucalyptus globulus being the most widely distributed species. This industry is dedicated exclusively to the production of wood without exploiting the by-products (leaves and small branches). Eucalyptus leaves are known to contain important amounts of essential oils composed primarily of 1,8-cineole (1,3,3-trymethyl-2-oxabicyclo[2.2.2]octane). In this work, the biotransformation of 1,8-cineole, is achieved using a native bacterium (Rhodococcus sp.) which was isolated from the soil of Eucalyptus forest. A 98% of bioconversion was achieved. Three different optically pure compounds were obtained, and they were... Tipo: Journal article Palavras-chave: Biocatalysis; Monoterpenes; Eucalyptus; Green Chemistry. Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000300011 SOIL WATER RETENTION CURVE AND S INDEX AS SOIL PHYSICAL QUALITY INDICATORS FOR INTEGRATED PRODUCTION SYSTEMS REA Magalhães,Wellington de A.; Freddi,Onã da S.; Wruck,Flávio J.; Petter,Fabiano A.; Tavanti,Renan F. R.. ABSTRACT Assess the physical quality of agricultural soils it is important to establish the management more adequate for plant growth. In this study, the soil water retention curve and S index as indicators of soil physical quality were evaluated in five integrated production systems in the following forestry arrangements: Eucalyptus in a single line, double line and triple line (Eucalyptus I, II and III respectively), Balsa in triple line and Teak triple line. The density and arrangement of forest trees influence the soil physical properties. Less soil water retention was observed in the Teak and Balsa wood systems in the layers 0-0.10 and 0.10-0.20 m. The field capacity, permanent wilting point, and available water were lower under the projection from... Tipo: Info:eu-repo/semantics/article Palavras-chave: Eucalyptus; Pore size distribution; Soil structure; ICLF. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000100064 USE OF RESIDUES FROM THE CELLULOSE INDUSTRY AND SUGARCANE BAGASSE IN PARTICLEBOARDS REA da Silva,Sérgio A. M.; Minillo,Larissa Q.; Aquino,Vinícius B. de M.; Lahr,Francisco A. R.; Christoforo,André L.. ABSTRACT The use of alternative materials such as lignocellulosic residues in the production of particleboards has increased considering that these residues are produced in large volumes and often do not have an appropriate destination. This research studied the use of residues from cellulose industries, sugarcane bagasse, and castor oil-based polyurethane resin in the production of wooden panels and evaluated the influence of using these residues on the physical and mechanical properties of the panels. The products were manufactured according to the Brazilian standard ABNT NBR 14810 and the requirements of the panels were evaluated based on national and international standards. All treatments partially met the regulatory requirements. The addition of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Industrial residues; Eucalyptus; Sugarcane bagasse; Particleboards; Castor oil-based resin. Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000100107 In silico analysis of Eucalyptus thioredoxins Genet. Mol. Biol. Barbosa,Aulus Estevão; Marinho,Paulo. The Eucalyptus Genome Sequencing Project (FORESTs), an initiative from the Brazilian ONSA consortium (Organization for Nucleotide Sequencing and Analysis), has achieved the sequencing of 123.889 EST clones from 18 different cDNA libraries. We have investigated the FORESTs data set to identify EST clusters potentially encoding thioredoxins (TRX). Two types of thioredoxin families described in plants, chloroplastic (TRXm/f/x/y) and cytosolic (TRXh), have been found in the transcriptome. Putative typical TRXs have been identified in fifteen clusters, four m-type, seven h-type, two f-type, one cluster for each x/y-types and one putative homologue of the TDX gene from Arabidopsis thaliana. One cluster presents an atypical active site WCMPS, different from the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Eucalyptus; Transcriptome; Thioredoxin. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400008 Eucalyptus ESTs corresponding to the protoporphyrinogen IX oxidase enzyme related to the synthesis of heme, chlorophyll, and to the action of herbicides Genet. Mol. Biol. Velini,Edivaldo Domingues; Trindade,Maria Lúcia Bueno; Alves,Elza; Catâneo,Ana Catarina; Marino,Celso Luis; Maia,Ivan de Godoy; Mori,Edson Seizo; Furtado,Edson Luiz; Guerrini,Iraê Amaral; Wilcken,Carlos Frederico. This work was aimed at locating Eucalyptus ESTs corresponding to the PROTOX or PPO enzyme (Protoporphyrinogen IX oxidase, E.C. 1.3.3.4) directly related to resistance to herbicides that promote oxidative stress, changing the functionality of this enzyme. PROTOX, which is the site of action of diphenyl-ether (oxyfluorfen, lactofen, fomesafen), oxadiazole (oxadiazon and oxadiargyl), and aryl triazolinone (sulfentrazone and carfentrazone) herbicides, acts on the synthesis route of porphyrins which is associated with the production of chlorophyll a, catalases, and peroxidases. One cluster and one single read were located, with e-values better than e-70, associated to PROTOX. The alignment results between amino acid sequences indicated that this enzyme is... Tipo: Info:eu-repo/semantics/article Palavras-chave: Eucalyptus; Protoporphyrinogen IX oxidase; Catalase; Peroxidase; Herbicide. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400009 In silico evaluation of the Eucalyptus transcriptome Genet. Mol. Biol. Vicentini,Renato; Sassaki,Flávio T.; Gimenes,Marcos A.; Maia,Ivan G.; Menossi,Marcelo. The expressed sequence tags (ESTs) produced in the Forests project provide an invaluable opportunity to assess the Eucalyptus transcriptome. Besides providing information on the different proteins produced by this plant, it is possible to infer gene expression profiles because non-normalized cDNA libraries were used. The EST frequency from any gene is correlated to the transcript levels in the tissues from which the cDNA libraries were constructed. The goal of this work was to identify Eucalyptus genes that showed either differential expression pattern or were ubiquitously expressed in the tissues sampled in the Forests project. Six robust statistical tests and very restrictive rules were applied to gain confidence in the in silico data aiming to avoid... Tipo: Info:eu-repo/semantics/article Palavras-chave: Transcriptome; Eucalyptus; Tissue-specific; Statistics; Differential expression. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400002 Eucalyptus ESTs associated with resistance to herbicide inhibitors of aromatic and branched-chain amino acid synthesis Genet. Mol. Biol. Velini,Edivaldo Domingues; Trindade,Maria Lúcia Bueno; Alves,Elza; Catâneo,Ana Catarina; Marino,Celso Luis; Maia,Ivan de Godoy; Mori,Edson Seizo; Furtado,Edson Luiz; Guerrini,Iraê Amaral; Wilcken,Carlos Frederico. Herbicides inhibit enzymatic systems of plants. Acetolactate synthase (ALS, EC = 4.1.3.18) and 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS, EC 2.5.1.19) are key enzymes for herbicide action. Hundreds of compounds inhibit ALS. This enzyme is highly variable, enabling the selective control of weeds in a number of crops. Glyphosate, the only commercial herbicide inhibiting EPSPS is widely used for non-selective control of weeds in many crops. Recently, transgenic crops resistant to glyphosate were developed and have been used by farmers. The aim of this study was the data mining of eucalypt expressed sequence tags (ESTs) in the FORESTs Genome Project database (<A HREF="https://forests.esalq.usp.br">https://forests.esalq.usp.br</A>) related... Tipo: Info:eu-repo/semantics/article Palavras-chave: Eucalyptus; Herbicides; ALS; EPSPS. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400012 Eucalyptus ESTs corresponding to the enzyme glutamine synthetase and the protein D1, sites of action of herbicides that cause oxidative stress Genet. Mol. Biol. Velini,Edivaldo Domingues; Trindade,Maria Lúcia Bueno; Alves,Elza; Catâneo,Ana Catarina; Marino,Celso Luis; Maia,Ivan de Godoy; Mori,Edson Seizo; Furtado,Edson Luiz; Guerrini,Iraê Amaral; Wilcken,Carlos Frederico. This work was aimed at locating Eucalyptus ESTs corresponding to the GS enzyme (Glutamine Synthetase, EC = 6.3.1.2) and to the D1 protein, which are directly related to resistance to herbicides that promote oxidative stress. Glutamine Synthetase corresponds to the site of action of the herbicide glufosinate. Herbicides that belong to groups such as ureas, uracils, triazines and triazinones act on the D1-Qb complex (receptor of electrons from the Photosystem II) by inactivating it. The clusters EGEQRT3302E01.g, EGEQRT3001F12.b; EGEZLV1203B04.g; EGBGFB1211H06.g and EGEZLV1205F09.g enclosed complete sequences (with 356 amino acids) of the Glutamine Synthetase enzyme. The cluster EGEQSL1054G06.g is a consensus of four reads and enclosed a complete sequence of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Eucalyptus; Glutamine synthetase; D1 protein; Herbicide. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400010 Characterization of a small cryptic plasmid from endophytic Pantoea agglomerans and its use in the construction of an expression vector Genet. Mol. Biol. Rudi Emerson de Lima,Procópio; Araújo,Welington Luiz; Andreote,Fernando Dini; Azevedo,João Lúcio. A circular cryptic plasmid named pPAGA (2,734 bp) was isolated from Pantoea agglomerans strain EGE6 (an endophytic bacterial isolate from eucalyptus). Sequence analysis revealed that the plasmid has a G+C content of 51% and contains four potential ORFs, 238(A), 250(B), 131(C), and 129(D) amino acids in length without homology to known proteins. The shuttle vector pLGM1 was constructed by combining the pPAGA plasmid with pGFPmut3.0 (which harbors a gene encoding green fluorescent protein, GFP), and the resulting construct was used to over-express GFP in E. coli and P. agglomerans cells. GFP production was used to monitor the colonization of strain EGE6gfp in various plant tissues by fluorescence microscopy. Analysis of EGE6gfp colonization showed that 14... Tipo: Info:eu-repo/semantics/article Palavras-chave: Green fluorescent protein; Bacteria; Host plant; Eucalyptus. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000100018 Identification and frequency of transposable elements in Eucalyptus Genet. Mol. Biol. Bacci Jr.,Maurício; Soares,Rafael B.S.; Tajara,Eloíza; Ambar,Guilherme; Fischer,Carlos N.; Guilherme,Ivan R.; Costa,Eduardo P.; Miranda,Vitor F.O.. Transposable elements (TE) are major components of eukaryotic genomes and involved in cell regulation and organism evolution. We have analyzed 123,889 expressed sequence tags of the Eucalyptus Genome Project database and found 124 sequences representing 76 TE in 9 groups, of which copia, MuDR and FAR1 groups were the most abundant. The low amount of sequences of TE may reflect the high efficiency of repression of these elements, a process that is called TE silencing. Frequency of groups of TE in Eucalyptus libraries which were prepared with different tissues or physiologic conditions from seedlings or adult plants indicated that developing plants experience the expression of a much wider spectrum of TE groups than that seen in adult plants. These are... Tipo: Info:eu-repo/semantics/other Palavras-chave: Eucalyptus; Transposable element. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400019 Registros recuperados: 221 Primeira ... 1 2 3 4 5 6 7 8 9 ... Última

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