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 20 of 39 for “"natural regeneration"”.
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Patterns of natural regeneration in pine and hardwood forests of the Upper Coastal Plain, Virginia
Natural regeneration is the primary means of replacing mature forests of parks and preserves in the absence of forest management. There is growing concern from landowners about how these forests will regenerate. The objective of this study was to examine the pattern of natural regeneration in some …
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NATURAL REGENERATION DYNAMICS AND SURVIVAL INFLUENCED BY ABIOTIC AND BIOTIC FACTORS IN A BOTTOMLAND HARDWOOD FOREST
… desired, native species. This research assessed regeneration dynamics and one-year survival in a seasonally-flooded bottomland hardwood forest at Boggy Slough Conservation Area in East Texas to identify abiotic and biotic factors important for successful establishment of native regeneration. …
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Impact of environmental law enforcement on deforestation, land use and natural regeneration in the Brazilian Amazon
… use change, through livestock, agriculture and natural restoration, and the persistence of natural regeneration. First, I assess the influence of law enforcement on forest loss reduction through a spatial analysis at the municipality level. The results confirmed that law enforcement, along with …
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Natural regeneration and ecological succession in Pinus kesiya watershed plantations in northern Thailand : implications on plantation management
… species, but little is known about the extent of regeneration in these plantations. The general aim of the study was to clarify the extent of forest regeneration and interactions behind it in Pinus kesiya plantations of the Ping River basin, northern Thailand. Based on the results of this study …
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Structure and natural regeneration in iberian pine forests: implications for management = Estructura y regeneración de los pinares ibéricos: implicaciones para la gestión
… estabilidad del suelo. A su vez la regeneración natural en los ecosistemas Mediterráneos se encuentra expuesta a numerosos problemas que hacen el futuro de estos ecosistemas sea preocupante e incierto, y los escenarios climáticos predicen episodios de sequías más frecuentes y temperaturas más …
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Persistence potential of Great Basin high-elevation conifers under novel climates and disturbance regimes
… isolated tree species, therefore differential regeneration success and proactive management will shape the future composition and distribution of forests. Focusing on the high-elevation pines of the Great Basin, I evaluate seedling success across a range of establishment conditions to assess …
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Restoration planting options for Pinus flexilis James in the southern Rocky Mountains
… 2,160 seedlings. To determine P. flexilis natural regeneration periodicity and site requirements in surrounding P. flexilis stands, three random plots were installed with five, 4 x 25 m subplots each. In the seedling planting plots, 76% of all planted P. flexilis seedlings were alive three …
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Impact of Human Activity on Protected Areas: A case study of Nech Sar National Park in Ethiopia
… gap on the impact of human activities on the natural capitals of the park. To examine this, ecological surveys were conducted by deploying transect lines along with experimental plots. Information was also collected from the indigenous communities of the park and stakeholders by making use of …
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Spatial Patterns of Herbaceous and Woody Recruitment in a Recently Restored Mixed Tidal Regime Freshwater Wetland
… cover and soil seed banks across restored and natural wetland habitats and (3) assess geospatial patterns to develop a GIS model of bald cypress (Taxodium distichum L.) recruitment. The two most common native colonizing species during 2009, 2010 and 2011 growing seasons were narrow-leaf cattail …
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The influence of plant size and fertilization on catkin production in birch (Betula pubescens Ehrh.)
… areas of Iceland, but today only little is left. Regeneration of birch is a key process in woodland expansion and is important for land reclamation and restoration. Success of natural regeneration depends largely on seed production and seed establishment. Therefore, information about factors …
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Effects of Tornado Damage, Prescribed Fire, and Salvage Logging on Oak (Quercus Spp.) Saplings in Upland Oak Forests in Northern Mississippi
… examined the effects of these treatments on oak regeneration. Species composition of saplings was measured to assess the impact of tornado damage and the treatments on sapling regeneration. All saplings, especially oaks, were reduced upon salvage logging which resulted in dominance by mesophytic …
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Even-aged regeneration alternatives for low quality oak hardwood forests in the Virginia Piedmont
… and growing season harvests, and four even-aged regeneration treatments on natural hardwood and planted loblolly pine (Pinus taeda L.) are examined three years after clear felling and whole-tree harvesting upland hardwood stands in the Virginia Piedmont. Natural hardwood regeneration was …
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Assessing the Effectiveness of Forest Restoration Efforts in Malawi: A Systematic Review of Successes, Challenges and Lessons Learned
… include strengthening governance, promoting natural regeneration, ensuring equitable resource access, and aligning restoration efforts with both international standards and Malawi’s national priorities. These insights aim to inform policy and practice for more sustainable and resilient forest …
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Effects of climate and forest management on the water and nitrogen status of European beech regeneration and understorey vegetation
… conditions on the nitrogen and water status of natural beech regeneration grown in managed (thinned) and not managed (control) stands in a forest in Southern Germany. A SW-exposed site, characterized by low water availability and high temperature and radiation interception, was regarded as …
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Testing assisted gene flow in restoration of winterfat, Krascheninnikovia lanata, a Great Basin desert shrub
… and weed invasion can pose challenges for natural regeneration of native plant communities. To combat these challenges and increase the diversity and density of native plant communities, active restoration is used to restore landscapes, and increasingly, practitioners are considering the …
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Long-term patterns of mortality and regeneration in near-natural woodland
1. Long-term patterns of natural regeneration, growth, mortality and disturbance were recorded in six native lowland woods around Britain, using a series of permanent transects/plots established during the 1950-80s. Records were made including the position and status of trees, shrubs, established …
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Effect of land degradation on the above-ground vegetation and soil seed bank of a Rangeland in Kunene region Namibia
… could provide insights into the potential for natural regeneration and the need for active restoration efforts. This study assessed and compared the characteristics of the aboveground vegetation and soil seed bank at sites of varying degrees of degradation in the Kunene Region of Namibia. A …
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Ground vegetation gross primary production dynamics of a drained peatland forest ecosystem
… changes may contribute to our understanding of natural regeneration and system recovery processes.
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Factors associated with Atlantic white -cedar seedling recruitment on microtopographic and landscape scales, Brown Mill Pond, Rye, New Hampshire
… that moisture was a primary limiting factor in natural regeneration at this site.</p><p>Differences in water table level and soil moisture were associated with differences in species composition and stand structure among the five cedar communities. In the wettest community continuous …
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