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 14 of 14 for “"tropical rain-forest"”.
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Development of image analysis techniques to enable low-cost tropical rain forest monitoring
Tropical rain forests are important carbon stores and harbours of biodiversity but are being cleared at an unprecedented rate. There is an estimated 2 billion hectares of degraded forest globally, which retains a large proportion of its biodiversity. Restoration of these lands is needed to meet …
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Development of efficient experimental strategies for the cryopreservation of problematic tropical rain forest tree germplasm
The rapid loss of the world’s tropical rainforest has serious consequences for mankind and global biodiversity. The conservation and sustainable management of tropical rainforests is helped greatly by the longterm storage and predictable availability of germplasm. Cryopreservation is one of the …
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Soil and vegetation recovery on abandoned paved roads in a humid tropical rain forest, Puerto Rico
… matter, and total Kjeldahl nitrogen reached forest levels within 11 yr of road abandonment despite residual pavement. Road soil pH showed a clear successional trend, and approached the more acidic forest soils within 60 yr. Pool sizes were similar to the forest by ≥30 yr; Road revegetation …
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Turbulent Exchange of Ozone and Nitrogen Oxides between an Amazonian Rain Forest and the Atmosphere
Amazonia, the world’s largest tropical rain forest area is facing rapid development, mainly caused by slash and burn activities. The change in land use, primarily to agricultural and pasture areas, has sustainable influence on the atmospheric input and the deposition of constituents like ozone and …
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Simultaneous determination of nitrous oxide and ammonia for measurement of in-situ fluxes from natural ecosystems by gas chromatography with headspace autosampler and electron capture detection
… NH3 and quantifies fluxes from a salt marsh and tropical rain forest.</p><p>The automated system used single column gas chromatograhic separation on HayeSep Q and electron capture detection. Air (N2+O 2), N2O and NH3 are separated with retention times of 0.9, 1.7 and 2.15 minutes respectively. …
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Experimental litterfall manipulation effects on soil bacterial community structure and soil carbon cycling in a wet tropical forest
… and fluxes remain largely unknown, especially in tropical forest ecosystems. To investigate how shifts in bacterial community composition resulting from differences in C availability affect organic matter decomposition and how soil C pools and fluxes respond to shifts in C inputs, I utilized an in …
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Experimental litterfall manipulation effects on soil bacterial community structure and soil carbon cycling in a wet tropical forest
… and fluxes remain largely unknown, especially in tropical forest ecosystems. To investigate how shifts in bacterial community composition resulting from differences in C availability affect organic matter decomposition and how soil C pools and fluxes respond to shifts in C inputs, I utilized an in …
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MODELLING THE GROWTH OF THE LOGGED OVER INLAND PRODUCTION FORESTS OF PENINSULAR MALAYSIA WITH FOREST MANAGEMENT CONSIDERATION
… are (1) to develop growth models for inland tropical rain forests and (2) to propose changes to the current management systems and cutting regime options. In the Malaysia context inland forests encompass lowland, coastal hill, hill and upper hill forests, 'flic current management systems …
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Effects of fragmentation and invasion on ant communities
… characteristics are especially problematic in tropical ecosystems where nutrient-poor soils do not easily meet the agricultural demands of growing human populations. A consequence of replacing tropical forests with agriculture is the creation of landscapes consisting of fragments of natural …
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Nutrient dynamics and their control in land use systems of forest margins in Central Sulawesi, Indonesia
In dieser Studie wurden Veränderungen von Bodenparametern nach Brandrodung des Regenwaldes in Zentral-Sulawesi, Indonesien, untersucht. Zusätzlich wurde die Nachhaltigkeit verschiedener Landnutzungssysteme in Bezug auf Bodenfruchtbarkeit bewertet. Das Untersuchungsgebiet ist durch fortschreitende …
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Spatiotemporal Variability of CO2, Solar-Induced Fluorescence, And Precipitation Over the Tropical Rainforests
Tropical rainforest ecosystems change forest dynamics during the dry/fire season, transitioning from an atmospheric CO2 sink to a CO2 source. The Amazon basin, Congo basin, and the tropical Indo-Pacific play vital roles in biospheric processes, which contribute to Earth’s atmospheric CO2 …