Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"tree recruitment"”.
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Fruit to Sapling: an Ontogenetically Integrated Study of Tree Recruitment in an Amazonian Rainforest
<p>I examined recruitment patterns of multiple tree species in a western Amazonian floodplain forest at three ontogenetic stages: seed fall, seedling establishment, and sapling recruitment.</p><p>From analyzing a long-term seed rain dataset collected using a high-density array of seed traps, I …
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The Influence of Dense Understory Shrubs on the Ecology of Canopy Tree Recruitment in Southern Appalachian Forests
Suppression of canopy tree recruitment beneath rapidly spreading thickets of Rhododendron maximum L. (Ericaceae) in southern Appalachian forests is an issue of major concern because of the potential impacts on forest productivity, hydrology and wildlife habitat. Many studies have investigated the …
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Forest Dynamics Of Two Multi-Aged Hemlock-Mixed Mesophytic Forests In The Northern Cumberland Plateau, Kentucky
… mature secondary forest. Age structure and recruitment patterns at the RCRNA gorge imply limited, selective cutting at one end with old-growth forest conditions throughout the majority of the study area. In contrast, CHA appears to have experienced more intense selective cutting throughout a …
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A Simulation Study to Evaluate Bayesian LASSO’s Performance in Zero-Inflated Poisson (ZIP) Models
… method for variable selection in their post-fire tree recruitment study in interior Alaska, USA and north Yukon, Canada. However, the above study has not carried out systematic simulation studies to evaluate Bayesian LASSO’s performance under different scenarios. Therefore, my thesis conducts a …
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A Quantitative Analysis of the Vegetation of Post Oak Savannas in Taney County, Missouri
… growth savanna and the restored savanna. Mean tree size (DBH) was greatest in the old growth savanna and lowest in the closed woodland. Canopy tree diversity was the highest in the closed woodland and lowest at the old growth savanna. Total shrub cover and diversity were highest in the woodland …
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Fire-driven changes to tree drought vulnerability and carbon storage in temperate broadleaf forests
… these changes will require an understanding of tree vulnerability to both drought and fire, yet their interaction is rarely considered. This dissertation explores the vegetation-mediated effects of fire disturbance on soil carbon storage and the importance of drought-fire interactions to tree …
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Spatial and temporal variability in Acacia population dynamics
… and climate facilitate the coexistence of trees and grasses in savannas and impact upon savanna structure, which also varies substantially both spatially and temporally. These features can shape savannas at an ecosystem and even at a global scale, but mechanisms for the effects of fire, …
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The role of life history traits for coexistence and forest recovery after disturbance – a modelling perspective. Towards a better understanding of species-rich forests
… different compositions of life history traits in trees. This thesis investigates the role of tree life history traits (growth, mortality and recruitment) on different processes structuring species-rich forests. Our study system is a montane rainforest located in the Tropical Andes hotspot of …
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Spatial distribution of canopy gaps in a tropical forest landscape and its influence on the tree community
… local abundance and spatial distribution of the tree species within them is still rather limited. In particular, the role of disturbance in determining compositional variation in forests remains poorly understood (Molino and Sabatier, 2001). This gap in understanding in large part reflects the …