Journal Articles

Cronología de la regeneración del bosque tropical seco en Santa Rosa, Guanacaste, Costa Rica. I. Características edáficas (Chronology of tropical dry forest regeneration in Santa Rosa, Guanacaste, Costa Rica)

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antecedentes

El objetivo del presente estudio es caracterizar  las propiedades químicas y físicas de los suelos a lo largo de una cronosecuencia de ocho fragmentos de bosque tropical estacionalmente seco en Santa Rosa, Costa Rica.

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Regeneración natural de plantas leñosas en una plantación costarricense de Vochysia guatemalensis (Vochysiaceae) y el efecto de la fertilización con P y NPK

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Tree density, basal area and species diversity in a disturbed dry tropicalforest of northern India: implications for conservation

Background

Dry tropical forest communities are among the world’s most threatened systems. Rapid measures are required to protect and restore them in degraded landscapes. For planning conservation strategies, there is a need to determine the essential measurable properties, such as number of species and basal area, that best describe the dry forest vegetation and its environment, and to document quantitative relationships among them.

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Cobertura De Copas Como Indicador De Desenvolvimento Estrutural De Reflorestamentos De Restauração De Matas Ciliares No Médio Vale Do Paranapanema, SP, Brasil

This study analyzed crown cover in riparian forests 1 to 3 years after reforestation in the Médio Vale do Rio Paranapanema, São Paulo, Brazil to evaluate the technique as a means to monitor the progress of restoration. Using a line inspection technique, crown cover significantly correlated with age, height, basal area, and DBH. The authors concluded that this is a suitable technique for planted riparian forests up to 3 years in age to evaluate changes in forest structure, and suggest that models might be developed to predict crown cover based on age and site variability.

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Evolução estrutural de reflorestamentos de restauração de matas ciliares no Médio Vale do Paranapanema (Structural evolution of planted riparian forests in the Mid Paranapanema Valley, SP, Brazil)

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Impacto humano afeta negativamente a dispersão de sementes de frutos ornitocóricos: uma perspectiva global (Human impact affects negatively the seed dispersal in ornithochorous fruits: a global perspective)

This literature-based analysis used data from a number of existing studies of seed dispersal by birds to compare the effects of plant characteristics and human impact on bird choice and seed dispersal. The study found that plant morphological characteristics did not effect on the frequency of bird visits or fruit consumption. However, the human impact on each site did have a significant effect. Areas with high human pressure had more than 3 times fewer visits and fruit consumed by birds. These data may be important for restoration efforts in gauging the intensity of seed rain for tree species dispersed by birds.

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Use of Fruit Essential Oils to Assist Forest Regeneration by Bats

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This study details techniques for attracting bats to an area to facilitate seed dispersal in degraded areas in and around Parque Estadual Vila Rica do Espírito Santo in Fênix, Paraná, Brazil.

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Technical and Financial Analysis of Enrichment Planting in Logging Gaps as a Potential Component of Forest Management in the Eastern Amazon

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This study investigates the potential for managing timber tree species regeneration in disturbed areas within logged forests in the eastern Amazon through the experimental introduction of seeds and seedlings.

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Enrichment Planting of Bertholletia excelsa in Secondary Forest in the Bolivian Amazon: Effect of Cutting Line Width on Survival, Growth and Crown Traits

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Bertholletia excelsa (Brazil nut tree) seedlings were planted as enrichment plantings under a variety of different treatments in the El Tigre reserve in the northern Bolivian Amazon.

Research Goals & Methods

Survival and growth were measured for five treatments: cutting lines of 2,4, and 6 m wide, and treatments with and without the vegetation cleared. Treatments with cleared vegetation produced high survival rates (97% vs. 86.5%), though the variation in line width did not affect survival rates.

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Crecimiento de especies forestales nativas en la zona norte de Costa Rica (Growth of native forest species in the north area of Costa Rica)

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Antecedentes

El estudio evalúa el comportamiento y crecimiento de cinco especies nativas utilizadas en la reforestación de llanuras del trópico húmedo de Costa Rica.

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