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| Registros recuperados: 123 | |
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| ALMEIDA,Everton José; LUIZÃO,Flávio; RODRIGUES,Domingos de Jesus. |
| Nutrient recycling in the forest is linked to the production and decomposition of litter, which are essential processes for forest maintenance, especially in regions of nutritionally poor soils. Human interventions in forest such as selecttive logging may have strong impacts on these processes. The objectives of this study were to estimate litterfall production and evaluate the influence of environmental factors (basal area of vegetation, plant density, canopy cover, and soil physicochemical properties) and anthropogenic factors (post-management age and exploited basal area) on this production, in areas of intact and exploited forest in southern Amazonia, located in the northern parts of Mato Grosso state. This study was conducted at five locations and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Transition forest; Nutrient cycling; Selective logging; Forest management. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000200157 |
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| Gorchov,David L.; Palmeirim,Jorge M.; Ascorra,Cesar F.. |
| Seed dispersal of Hymenaea courbaril was studied by following the fate of 585 seeds embedded with small magnets and set in displays in and near a logged strip in rain forest in the Peruvian Amazonian. Mammals took fruits from all displays, which were located in the forest, edge, and cleared strip. Overall removal rates were low - a median of 8.1 fruits / month from displays maintained with 8-10 fruits - but were higher in August than in earlier months. Most fruits were dropped near the display or had their seeds eaten, but > 13% were successfully dispersed. Most of the dispersed seeds were buried, which increases probability of germination. Maximum dispersal distance of live seeds was 12.1 m (median 3.1 m), but other magnets were transported up to 34 m,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caesalpinioideae; Dasyprocta fuliginosa; Myoprocta pratti; Seed predation; Forest management. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672004000200014 |
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| FERRAZ FILHO,ANTONIO C.; MOLA-YUDEGO,BLAS; GONZÁLEZ-OLABARRIA,JOSÉ R.; SCOLFORO,JOSÉ ROBERTO S.. |
| ABSTRACT This study focuses on the effects of different thinning regimes on clonal Eucalyptus plantations growth. Four different trials, planted in 1999 and located in Bahia and Espírito Santo States, were used. Aside from thinning, initial planting density, and post thinning fertilization application were also evaluated. Before canopy closure, and therefore before excessive competition between trees took place, it was found that stands planted under low densities (667 trees per hectare) presented a lower mortality proportion when compared to stand planted under higher densities (1111 trees per hectare). However, diameter growth prior to thinning operations was not statistically different between these two densities, presenting an overall mean of 4.9... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growing space; Forest management; Solid wood products; Stand density management. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100255 |
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| Laufer,Juliana; Michalski,Fernanda; Peres,Carlos A.. |
| Standard line-transect census techniques were deployed to generate a checklist and quantify the abundance of medium and large-bodied vertebrate species in forest areas of eastern Amazonia with and without a history of reduced-impact logging (RIL). Three areas were allocated a total of 1,196.9 km of line-transect census effort. Sampling was conducted from April to June 2012 and from April to August 2013, and detected 29 forest vertebrate species considered in this study belonging to 15 orders, 20 families and 28 genera. Additionally, eight species were recorded outside census walks through direct and indirect observations. Of this total, six species are considered vulnerable according to IUCN (Ateles paniscus, Myrmecophaga tridactyla, Priodontes maximus,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fauna; Forest management; Tropical rainforest; Mammals; Birds. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000200202 |
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| Silva,Mayesse Aparecida da; Silva,Marx Leandro Naves; Curi,Nilton; Oliveira,Anna Hoffmann; Avanzi,Junior Cesar; Norton,Lloyd Darrell. |
| Eucalyptus plantations are normally found in vulnerable ecosystems such as steep slope, soil with low natural fertility and lands that were degraded by agriculture. The objective of this study was to obtain Universal Soil Loss Equation (USLE) factors and use them to estimate water erosion risk in regions with eucalyptus planted. The USLE factors were obtained in field plots under natural rainfall in the Rio Doce Basin, MG, Brazil, and the model applied to assess erosion risk using USLE in a Geographic Information System. The study area showed rainfall-runoff erosivity values from 10,721 to 10,642 MJ mm ha-1 h-1 yr-1. Some soils (Latosols) had very low erodibility values (2.0 x 10-4 and 1.0 x 10-4t h MJ-1 mm-1), the topographic factor ranged from 0.03 to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: USLE factors; Soil loss tolerance; Conservation practices; Forest management. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000200007 |
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| Arrocha,Fernando; Villena,Mauricio G. |
| This paper analyzes the relationship between rural poverty and forest land management for the case of charcoal production under slash-and-burn agriculture. An optimal control model is used to determine how a representative household makes decisions about the allocation of labor and about the forest areas to exploit. In turn, these decisions affect the renewable resource base available to the community. The proposed optimal control model for charcoal production is based on the Pascual and Barbier (2007) model of slash-and-burn agriculture. This theoretical model is calibrated with data from the community of Chunkanán, Campeche, Mexico. The simulation and comparison of the traditional slash-and-burn approach to forest management with the Forest Management... |
| Tipo: Journal article |
Palavras-chave: Charcoal production; Forest management; Rural poverty; Rural households. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300009 |
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| Chi Poot, Roger Antonio. |
| El presente trabajo se realizó en La Mojonera, Zacualtipán, Hidalgo, con la finalidad de determinar el efecto del manejo del bosque de Pinus patula sobre la riqueza de avifauna, durante la transición invierno-primavera 2004-2005. Se definieron tres condiciones del bosque de acuerdo a su historial de manejo. La Condición Uno (C1) pertenece a un bosque no intervenido por el proceso de corta (bosque natural); la Condición Dos (C2) estuvo constituida por rodales mayores a 12 años; y la Condición Tres (C3) por rodales menores de 12 años de edad. Para el muestreo de la vegetación, se establecieron 21 parcelas de 400 m2 (20X20m). En cada parcela se etiquetaron todos los individuos de especies arbóreas con DAP≥2 cm. Se identificaron, se registró su DAP, altura,... |
| Tipo: Tesis |
Palavras-chave: Manejo del bosque; Avifauna; Abundancia; Riqueza; Maestría; Forestal; Forest management; Avian communities; Abundance; Richness. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1549 |
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| Vásquez Ibáñez, Alejandro. |
| La ejecución de cualquier actividad mitigadora de cambio climático requiere de la implementación de un mecanismo de evaluación y monitoreo que permita conocer su eficacia en condiciones específicas. Por ello, actualmente se desarrollan en México y en el mundo diversos estudios enfocados a contabilizar la captura del CO2 en bosques y selvas. En esta investigación se evaluó la aplicabilidad del modelo de contabilidad de carbono CBM-CFS3 en bosques templados sujetos a un régimen de aprovechamiento; como primer parte de la investigación fue necesario identificar la disponibilidad de datos, parámetros e información para alimentarlo, posteriormente se identificaron los mecanismos adecuados para ingresar la información al modelo CBM-CFS3, finalmente se realizó un... |
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Palavras-chave: CBM-CFS3; Modelación de carbono; Manejo forestal; Inventario forestal; Carbon modeling; Forest management; Forest inventory; Maestría; Forestal. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/403 |
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| Contreras Rodríguez, Israel. |
| El presente estudio se realizo con la finalidad de conocer el manejo y el uso de los acahuales en la unidad de manejo forestal 2708CE Centro, Tabasco que incluye a los municipios de (Centro, Jalapa, Centla, Macuspana, Tacotalpa y Teapa). Un total de 79 acahuales fueron ubicados, se aplicaron preguntas informales a los dueños de los predios, delegados y personas oriundas de la comunidad. Para el análisis de la diversidad de usos y determinación del índice de valor de importancia se seleccionaron tres acahuales, dos ubicados en Macuspana y uno en el Centro, por ser los de mayor representatividad en la unidad de manejo. El levantamiento de especies en cuadrantes de 10m X 50m (500m2) en cada acahual tuvo registro total de individuos, especies así como el... |
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Palavras-chave: Acahuales; Manejo forestal; Vegetación secundaria; Forest management; Secondary vegetation; Maestría Tecnológica; Sistemas Sustentables de Producción en el Trópico. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/316 |
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| Tucker, Catherine M.; Indiana University, Bloomington, Indiana; tuckerc@indiana.edu; Randolph, J. C.; Indiana University, Bloomington, Indiana; randolph@indiana.edu; Evans, Tom; Indiana University, Bloomington, Indiana; evans@indiana.edu; Andersson, Krister P.; University of Colorado, Boulder, Colorado;; Persha, Lauren; Indiana University, Bloomington, Indiana;; Green, Glen M.; Indiana University, Bloomington, Indiana;. |
| A significant challenge in the assessment of forest management outcomes is the limited ability to compare forest conditions quantitatively across ecological zones. We propose an approach for comparing different forest types through the use of reference forests. We tested our idea by drawing a sample of 42 forests from the Midwest USA, Mexico, Guatemala, Honduras, Brazil, Bolivia, Uganda, and Nepal. We grouped these forests by shared characteristics and selected a reference forest to serve as a baseline for each forest type. We developed an index of disturbances using ratios of several forest measurements to assess differences between each study forest and its reference forest. None of the study forests was known to have been impacted by major natural... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Biophysical factors; Comparative analysis; Forest management; Institutions; Multidisciplinary methodology; Reference forests. |
| Ano: 2008 |
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| Registros recuperados: 123 | |
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