Global ETD Search

11	Intraspecific Trait Plasticity in Coffee Agroforestry Systems of Costa Rica Gagliardi, Stephanie 18 March 2014 (has links) Although a common plant response to environmental gradients, leaf trait plasticity is often uncharted in agroforestry systems. The objective of this study was to examine the effect of a i) local-scale gradient (light, nutrients) induced by shade tree diversity and ii) large-scale gradient (climato-edaphic) induced by altitude on coffee plant response on multiple agroforestry research farms in Costa Rica. Results show large variability of coffee traits: leaf photosynthetic rates, specific leaf area (SLA) and number of fruiting nodes deviate along both gradients. Mean SLA increased with increasing shade tree diversity. However, with increasing altitude, full sun coffee photosynthesized at higher rates than shaded coffee. Concurrently, other coffee leaf physiological and morphological traits differentiated between full sun and shaded coffee with increasing altitude. Results suggest soil moisture and light availability dominate environmental correlates to intraspecific coffee trait plasticity, providing insight to sources of coffee performance variability in monoculture and agroforestry systems. agroforestry coffee trait plasticity Costa Rica biodiversity climate shade grown coffee intraspecific edaphic CATIE trait variability landscape scale local scale altitude photosynthesis yield shade tree leaf physiology leaf morphology plant interactions plant response phenotypic plasticity 0368 0473 0329
12	Intraspecific Trait Plasticity in Coffee Agroforestry Systems of Costa Rica Gagliardi, Stephanie 18 March 2014 (has links) Although a common plant response to environmental gradients, leaf trait plasticity is often uncharted in agroforestry systems. The objective of this study was to examine the effect of a i) local-scale gradient (light, nutrients) induced by shade tree diversity and ii) large-scale gradient (climato-edaphic) induced by altitude on coffee plant response on multiple agroforestry research farms in Costa Rica. Results show large variability of coffee traits: leaf photosynthetic rates, specific leaf area (SLA) and number of fruiting nodes deviate along both gradients. Mean SLA increased with increasing shade tree diversity. However, with increasing altitude, full sun coffee photosynthesized at higher rates than shaded coffee. Concurrently, other coffee leaf physiological and morphological traits differentiated between full sun and shaded coffee with increasing altitude. Results suggest soil moisture and light availability dominate environmental correlates to intraspecific coffee trait plasticity, providing insight to sources of coffee performance variability in monoculture and agroforestry systems. agroforestry coffee trait plasticity Costa Rica biodiversity climate shade grown coffee intraspecific edaphic CATIE trait variability landscape scale local scale altitude photosynthesis yield shade tree leaf physiology leaf morphology plant interactions plant response phenotypic plasticity 0368 0473 0329
13	Effects of experimental drought on hydraulic properties and leaf traits of upper canopy and understory tree species in a perhumid tropical forest in Central Sulawesi, Indonesia / Über den Einfluss experimenteller Trockenheit auf hydraulische Eigenschaften und Blattmerkmale von über- und unterständigen Baumarten in einem immerfeuchten tropischen Primärwald in Zentral Sulawesi, Indonesien Schuldt, Bernhard 28 October 2010 (has links) No description available. 570 Biowissenschaften, Biologie Biology (incl. Psychology) Tropischer Regenwald Austrocknungsexperiment Trockenstress hydraulische Leitfähigkeit hydraulische Architektur Blattmorphologie Saftfluss Baumhöhe Gefäßanatomie Holzdichte Tropical primary forest throughfall displacement experiment drought stress hydraulic conductivity hydraulic architecture leaf morphology sap flow tree height vessel anatomy wood density 42 W 000
14	Climate Change Affects Leaf Morphology: Investigating Mechanism and Variation Across Species Thomas, Michael D. 11 July 2022 (has links) No description available. Agriculture Agronomy Biology Botany Climate Change Ecology Environmental Science Forestry Morphology Physiology Plant Biology Plant Sciences Climate Change eCO2 Warming Global Warming Leaf Angle Hyponasty Heat stress Leaf Morphology Tomato Solanum lycopersicum Plants CO2 Carbon Dioxide Auxin Ethylene Phytochrome PhyB Thermomorphogenesis Shade avoidance Strategy Morphology

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