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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 20 for “"Podocarpus"”.
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Kahikatea - Podocarpus dacrydioides
Kahikatea (Podocarpus dacrydioides) forests were once found extensively on alluvial plains and river flats throughout New Zealand. Today these forests have dwindled in extent; largely as a result of clearing of the fertile soils for pastoral farming and the use of the non-tainting timber for butter …
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Analysis of the "nurse-tree effect" of exotic shelter trees on the growth of the indigenous Podocarpus falcatus in an Ethiopian montane forest
… regeneration and an enhanced growth of native Podocarpus falcatus saplings under the shelter of exotic tree plantations (Pinus and Eucalyptus) was observed. The focus of this work was to examine the different growth patterns of the saplings in the sites, the effects of the on the photosynthetic …
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Additive basal area in Knysna Forest - myth or reality?
… basal area of the plot. The mean basal area of Podocarpus falcatus and Podocarpus latifolius in 0.04 ha plots were studied in 2032 plots at eleven sites in the Knysna Forest in relation to the basal area of the remaining species and the total basal area. Mean basal area regressions indicated …
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Diversity of geometrid moths in a montane rainforest in Ecuador
… in a montane forest at the border of the Podocarpus National Park in southern Ecuador along an altitudinal gradient ranging from 1,040 m to 2,677 m above sea level. This study is part of a larger interdisciplinary project on diversity and functioning of a montane forest ecosystem. A total …
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Synthesis Of A Novel Family Of Amide Derivatives Of Podocarpic Acid
… a natural tricyclic diterpene, derived from Podocarpus species, has been employed to form a novel family of amide derivatives which will later be studied for their potential as new drug leads. Novel amide derivatives of podocarpic acid were synthesized from podocarpic acid in three steps. The …
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The colonisation of fynbos and disturbed sites by indigenous forest communities in the Southern Cape
… areas were reconstructed, mainly by planting Podocarpus falcatus (kalander) and Ocotea bullata (stinkwood). Recently, other additional indigenous species are being used. A few experimental reconstruction plots have been laid out, the first one (in 1927) being the Taungya plots at
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4000 years of environmental and climate change at Eilandvlei : a palynological investigation into the late Holocene palaeoenvironment of the Wilderness Embayment
… notable fluctuations in other taxa, e.g. Podocarpus and Stoebe-type, possibly the expression of the anthropogenic effect on the landscape. This high resolution record thus highlights significant, albeit short term, fluctuations in climate and vegetation patterns along the Southern coast of …
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Part I : Isolation Of Dipentyl 2-(4-(pentan-3-yl) Phenyl) Malonate From Sanguisorba Officinalis Labill Part II: Synthesis Of A Novel Family Of Ethers Of Podocarpic Acid
… acid (a natural tricyclic diterpene derived from podocarpus species) as a template. Novel ether derivatives of podocarpic acid were synthesized from podocarpic acid in three steps. The first step involved methylation of podocarpic acid with dimethyl sulfate to form methyl-o-methyl podocarpate. The …
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Resource partitioning of soil organic phosphorus: investigations from a tropical mountain forest
… mycorrhizal (AM) Mollinedia darensi and Podocarpus olieofolius, ectomycorrhizal (EM) Oreomunnia mexicana, and nonmycorrhizal (NM) Roupala montana tree species in a hydroponic growth medium containing exclusively either inorganic, monoester, diester, inositol-P, or a no-P control. In …
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Past Environmental Change On The Eastern Andean Flank, Ecuador
… montane forest at MTW (<i>Alnus, Hedyosmum, Podocarpus</i>). Fire was not the main driver for the vegetation reassortment at either site (MTW correlation coefficient: -0.37, MTE: 0.16). The two sites have demonstrated the EAF plays host to floristically dynamic ecosystems, susceptible to …
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Light microsite requirements of seedlings of some Afromontane forest tree species: the role of canopy gaps promoting regeneration
… or RGR, were regarded to be pioneer species. Podocarpus latifolius was regarded to be a deep shaded species due to its low photosynthetic and RGR's. Rapanea melanophloeos, Ilex mitis, Olea capensis sub Ssp. macrocarpa and Kiggelaria africana either had moderately high RGR or photosynthetic …
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Palynology and Age of the Alvord Creek Formation, Steens Mountain, Southeastern Oregon
… including the gymnosperms Tsuga, ?Taxodium, Podocarpus, and Ephedra and the angiosperms Quercus, Ulmus, Corylus, Juglans, Fraxinus, and Nyssa. Pollen assigned to the undivided Taxaceae-Cupressaceae-Taxodiaceae group, Quercus and Abies dominate the assemblage; monolete and trilete spores are …
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Identification of Fossil Wood from the Specimen Creek Area of the Gallatin Petrified Forest, Yellowstone National Park, Montana
… Larix*, Pinus, Tsuga*</p> <p>PODOCARPACEAE: Podocarpus</p> <p>TAXODIACEAE: Glyptostrobus*, Sequoia, Taxodium*</p> <p>*ACERACEAE: Acer*</p> <p>BETULACEAE: Alunus, Betula*</p> <p>*CORNACEAE: Cornus*</p> <p>*EBENACEAE: Diospyros*</p> <p>FAGACEAE: Fagus</p> <p>HAMAMELIDACEAE: Liquidambar*</p> …
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Exploring high-resolution carbon isotopes in archaeological charcoal as a rainfall seasonality proxy
… (gymnosperm) charcoal. Modern Protea and Podocarpus wood and charcoal samples from all three rainfall zones are tested to assess the SPP's applicability in South Africa and its ability to extract seasonal climate data from different materials. Results show that seasonal amplitudes …
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Diversität von Nachtfaltergemeinschaften entlang eines Höhengradienten in Südecuador (Lepidoptera: Pyraloidea, Arctiidae)
… Das Untersuchungsgebiet lag am Rande des Podocarpus-Nationalparks an der Ostabdachung der Anden, und die Studie war in eine dort lokalisierte interdisziplinäre Forschergruppe integriert. Die Nachtfalterartengemeinschaften wurden während dreier Feldaufenthalte im Frühjahr sowie im Herbst …
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Soil-plant dynamics of water, nitrogen and sulfur: A study on indigenous and exotic tree species in Munessa Forest, Ethiopia
… stands of a natural forest dominated by Podocarpus falcatus and in plantations of Cupressus lusitanica and Eucalyptus globulus. All investigations on the ecology of these trees were conducted on the same single-tree centred plots in a combination of time series of natural parameters with …
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Biomass and Nutrient Studies of Selected Tree Species of Natural and Plantation Forests: Implications for a Sustainable Management of the Munessa-Shashemene Forest, Ethiopia
… forests. The study focused on four tree species, Podocarpus falcatus (Thunb.) Mirb., Podocarpaceae and Croton macrostachys Hochst. ex Del. Euphorbiaceae, were selected from a natural forest. Cupressus lusitanica Miller, Cupressaceae and Eucalyptus globulus Labill. Myrtaceae were selected from …