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 15 of 15 for “"secondary forests"”.
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Reforestation Management to Prevent Ecosystem Collapse in Stochastic Deforestation
… impacted on ecosystem services. In this context, secondary forests have emerged as crucial elements in mitigating environmental degradation and restoration. This study is motivated by the need to understand the reforestation management in secondary forests to prevent irreversible ecosystem damage. …
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Species Composition and Spatial Ecology of Amazonian Understory Mixed-Species Flocks in a Fragmented Landscape
… of patchworks of small forest fragments, secondary forests and roads. Conservation, however must take species interactions into consideration as they play a pivotal part the maintenance of several biological processes in the tropics. One of the most conspicuous interspecific interactions …
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Essays on Dynamic Optimization for Forest Resource Management
… first two papers consider the shift from primary forests to cleared land and secondary forests in the context of deforestation. This process is known to lead to irreversible tipping points that lead to the loss of ecosystem services. The past literature has discussed forest rotations under …
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Estimates of global sources and sinks of carbon from land cover and land use changes
… this study evaluates the impact that resulting secondary forests may have on terrestrial carbon uptake. The ISAM model simulations indicate that uncertainties in net terrestrial carbon fluxes during the 1990s are largely due to uncertainties in regional LCLUC data. Also results show that …
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Functional analysis of secondary tropical dry forests in a region of the Colombia, Caribbean
Secondary tropical forests are increasingly recognized for their role conserving biodiversity in agricultural landscapes and this role is especially important for seasonally dry tropical forests (SDTF), one of the most threatened tropical forested ecosystems. The conservation value of secondary …
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Quantifying the immediate carbon emissions from El Niño-mediated wildfires in humid tropical forests
… wildfires in human-modified tropical forests can be considerable owing to high necromass fuel loads. Yet, data on necromass combustion during wildfires are severely lacking. The present study evaluated necromass carbon stocks before and after the 2015– 2016 El Niño in Amazonian forests …
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Descrição e análise do padrão de nidificação de Leptopogon amaurocephalus Tschudi, 1846 (Aves, Tyrannidae) na Zona da Mata de Minas Gerais
… the lower and middle strata of primary and secondary forests and woods. According to the brief descriptions available, its nest is purse shaped, hanging under natural or artificial cover. Since nest shape has been used as an auxiliary character to solve questions concerning relationships at …
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Os saguis do gênero Leontopithecus Lesson, 1840 (Callithricidae - Primates)
… Originally, the lion tamarins inhabited primary forests. Today, due to the intense alteration of their habitats, especially that of the nominal race, the remaining populations of these rare marrnosets live in greatly deteriorated or secondary forests. The ongoing destruction of their habitats is …
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Saturated hydraulic conductivity in the humid tropics : sources of variability, implications for monitoring and effects on near-surface hydrological flow paths
… by increasing areas of tree plantations and secondary forests. These changes are known to affect the regional water cycle as a result of plant-specific water demand and by influencing key soil properties which determine hydrological flow paths. One of these key properties sensitive to …
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Leaf litter ant communities in tropical lowland rain forests in Sabah, Malaysia
Large parts of the tropical lowland rain forests of Sabah (Malaysia) were transformed into secondary forests due to heavy logging. Additionally the remaining forest remnants are isolated from each other by large scale oil palm plantations. Biodiversity patterns and responses of the community of …
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Oil palm expansion and land cover changes in the Peruvian Amazon: implications for forest conservation and fire mitigation
… incentives for expanding plantations outside forests are essential to guarantee forest conservation. Remote sensing methods developed in this work to map annual land cover conversion to oil palm demonstrated that the use of different satellite sensors is essential for a reliable and …
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Biogeochemical Investigations in Old Growth and Disturbed Forest Sites at Mount Kilimanjaro
Areas covered by mountain rainforests in East Africa have important functions as catchment areas for the streams in the savannah. Still, little is known about the biogeochemical processes in these often threatened ecosystems. The current study aims to present basic information on soils and …
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Reconstructing climate variability on the Tibetan Plateau : comparing aquatic and terrestrial signals
… in our study area, but a conversion of natural forests to semi-natural secondary forests. The results from the numerical proxy comparison of the two sets of two pairs of Tibetan lakes indicate that the use of different proxies and the work with palaeo-ecological records from different lake types …
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Überführung von südbrasilianischen Araukarien-Sekundärwäldern in naturnahe Wirtschaftswälder
Ziel der Arbeit war es, südbrasilianische Araukarien-Sekundärwälder hinsichtlich Aufbau, Entstehung und Entwicklung und hieraus resultierenden Ausgangsbedingungen für eine Überführung in naturnahe und wertholzreiche Wirtschaftswälder zu beschreiben und waldbauliche Behandlungsansätze abzuleiten und …