Global ETD Search

541	Trace Gas Fluxes from Tropical Montane Forests of Southern Ecuador / Spurengasflüsse in Tropischen Bergregenwäldern im Süden Ekuadors Martinson, Guntars O. 28 March 2011 (has links) No description available. 500 Naturwissenschaften Forest Sciences and Forest Ecology Nährstoffkreislauf Spurengase Methan Stickstoff Bromelien Bergregenwald nutrient cycling methane nitrous oxide nitrogen tank bromeliads montane forests 48.32 YQO 000: Ökologie {Forstbotanik}
542	New adaptive plot designs for sampling rare and clustered populations / Neue Ansätze für adaptive Stichprobenverfahren zur Erfassung von seltenen und räumlich geklumpten Populationen Yang, Haijun 28 November 2011 (has links) No description available. 500 Naturwissenschaften Forest Sciences and Forest Ecology Waldinventur adaptives Aufnahmeverfahren Stichprobensimulation Schätzverfahren Forest inventory adaptive plot design sampling simulation estimation design 48.03 48.30 YVT000
543	Vergleich unterschiedlicher Anbaumethoden von Energieholzplantagen / Comparison of different cultivation methods of short rotation plantations Stoll, Bettina 19 December 2011 (has links) No description available. 500 Naturwissenschaften Forest Sciences and Forest Ecology Kurzumtrieb Pappel Weide Bodenbearbeitung Begleitwuchsregulierung Bodenhilfsstoffe short rotation poplar willow ground preparation vegetation management soil additives 48.40
544	Zur Flugaktivität und Brutherdentwicklung des Buchdruckers <i>Ips typographus</i> (L.) / About flight-activity and dynamics of brooding areas of the spruce bark beetle <i>Ips typographus</i> (L.) Hurling, Rainer 09 October 2002 (has links) No description available. 500 Naturwissenschaften allgemein Forest Sciences and Forest Ecology Ips typographus Buchdrucker Brutherdentwicklung Flugaktivität Ips typographus spruce bark beetle dynamics of brooding areas flight-activity 48.47 48.63 48.54 YR000 YTR000 YQO000
545	Regionalization of Variables of Sample Based Forest Inventories at the District Level / Regionalisierung von Variablen forstlicher Stichprobeninventuren auf Betriebsebene Nieschulze, Jens 14 February 2003 (has links) No description available. 500 Naturwissenschaften allgemein Forest Sciences and Forest Ecology Geostatistik Forstinventur Regionalisierung Fernerkundung GIS Monitoring Geostatistics forest inventory regionalization remote sensing GIS monitoring YA
546	Structure and diversity of the dry woodland savanna of northern Namibia / Struktur und Diversität der trockenen Savannenwälder im norden Namibias Graz, Friedrich Patrick 04 February 2005 (has links) No description available. 630 Landwirtschaft Veterinärmedizin Forest Sciences and Forest Ecology regengrüne Trockenwälder Namibia Durchmischung Exponentialfunktion räumliche Diversität savanna woodland Namibia mingling negative exponential spatial diversity 48.03 48.30 BBF 2 BBF 6
547	Druckverteilung auf Kontaktflächen unter Forstreifen / Pressure Allocation on Contact Areas under Forest Tires Ebel, Andreas 17 February 2006 (has links) No description available. 500 Naturwissenschaften Forest Sciences and Forest Ecology Reifen Forstreifen Forstmaschinen Druckverteilung tires tyre forest tires forestry machines pressure allocation 48.00 48.20
548	Applications of Hyper-spectral and Radar Remote Sensing analysis: a case study of forest landscapes in Costa Rica / Anwendungen und Untersuchungen der Hyperspektralen und Radar- Fernerkundung: eine Fallstudie für Waldlandschaften in Costa Rica Vega-Araya, Mauricio 12 November 2012 (has links) No description available. 550 Geowissenschaften YA 000 Forest Sciences and Forest Ecology Fernerkundung SAR-Sensoren Hyperspektralen Waldlandschaften Costa Rica Remote Sensing Synthetic Aperture Radar Hyper-spectral forest landscapes Costa Rica 38 Geowissenschaften
549	The Distribution of the Genetic Diversity in <i>Araucaria angustifolia</i> (Bert.) O. Kuntze populations and its implications for the conservation of the species / Verteilung der genetischen Variation in Populationen von <i>Araucaria angustifolia</i> und ihre Auswirkungen für die Erhaltung der genestischen Ressourcen Stefenon, Valdir Marcos 25 September 2007 (has links) No description available. 570 Biowissenschaften Biologie Forest Sciences and Forest Ecology Araucaria angustifolia genetische Diversität genetische Erhaltung Flaschenhalseffekte Mikrosatelliten AFLP Araucaria angustifolia genetic diversity genetic conservation bottleneck effect microsatellite AFLP
550	Bird community ecology and composition in afrotemperate forests of the Drakensberg Mountains, South Africa. January 2009 (has links) Recent research has emphasized the importance of understanding the consequences of species loss, not just for biodiversity per se, but also for ecosystem resilience and functioning. Firstly, a baseline analysis of the effects of a naturally patchy landscape on avian community composition and resilience in a high altitude Afrotemperate forest landscape in South Africa is presented. Bird data from a point count survey of 706 counts at 31 forest sites was used to test whether taxonomic species diversity, functional species richness and density of birds provide insight into community resilience in this historically patchy ecosystem. Bird species richness of forest patches ranged from 17 to 38, with a total species richness of 50. Density was slightly but negatively related to both area and species richness. That density compensation is occurring in these Afrotemperate forests suggests a level of resilience in this system. Following on from this, cumulative species-area and function-area graphs were derived to quantify the loss of forest area or taxonomic bird species richness that this landscape may potentially sustain before ecosystem functioning is negatively affected. The concept that species’ patterns of distribution, abundance and coexistence are the result of local ecological processes has recently been challenged by evidence that regionalscale processes are equally instrumental in shaping local community composition. The historically and naturally fragmented Afrotemperate forests of the uKhahlamba– Drakensberg Park, South Africa, offer an interesting test case. In this study the relative effects of local and regional-scale processes on species assemblages in a naturally patchy forest system were investigated. By employing species-area and species-isolation relationships, and nested subset analyses, we showed that isolation (regional-scale process) had a greater effect on bird species richness and composition than area (local-scale process), though the species-area relationship was significant. Using generalized linear models and an information-theoretic approach to model selection, patch area, the size of the regional species pool as well as the distance to the nearest Eastern Mistbelt forest were all influential in determining local bird species richness in these montane forests. Thus, localities are regionally enriched within the constraints on species occupancy provided by the available habitat. / Thesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2009. Forest ecology--Drakensberg Mountains. Spatial ecology--Drakensberg Mountains. Species diversity. Forest conservation--KwaZulu-Natal. Theses--Zoology.

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