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 20 of 28 for “"carbon allocation"”.
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Underlining the potential drivers of carbon allocation in Kernza® crops
… investigates the primary factors influencing carbon allocation in Thinopyrum intermedium (Kernza) during its first growth year at the PERENNIAL experimental site in Alnarp, Sweden. Focusing on the distribution of aboveground and belowground biomass and the role of soil properties, this work …
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Building a Carbon Allocation Methodology across Multiple Business Teams and Activities with Interdependencies
… the world are setting and committing to net-zero carbon targets. Achieving this goal comes with operational challenges for companies, e.g., having a standardized method to hold internal business teams accountable for their carbon emission, and empowering individual teams to decarbonize. Especially …
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Patterns of carbon allocation, storage and remobilization in a common resprouting savanna species - Acacia karoo
… a comprehensive understanding of the patterns of carbon partitioning, storage and remobilization in Acacia karroo during the juvenile life history stage. Tuber total nonstructural carbohydrate (TNC) concentrations and δ¹³C values were determined in plants from two different stages in the juvenile …
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Optimality and resilience in patterns of carbon allocation and growth in vegetation under acclimation response to climate change
… atmospheric concentration of the greenhouse gas carbon dioxide was 280 ppm, it is currently at 400 ppm and is expected to reach 550 ppm by 2050. Under such a changing environmental condition plants undergo acclimation, by which they adjust to the altered environment and in doing so enhance their …
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A 14C and 15N study of the effects of ammonium or nitrate nutrition on carbon allocation in Triticum aestivum L. and Zea mays L
… nutrition has been attributed to a diversion of carbon allocation from structural material for root extension to functions associated with the assimilation and translocation of ammonium in the root. The aim of this research was to investigate carbon allocation in response to ammonium or nitrate …
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In vivo 13C stable isotope tracing of single leaf development in the cold
… metabolite pool sizes may stay constant while carbon flows are altered and vice versa. Hence, measuring the carbon allocation of metabolites enables a better understanding of the metabolic phenotype. The main challenge of such measurements is the in vivo integration of a stable or radioactive …
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Surviving the fire-trap: resprouting and carbohydrate partitioning of Acacia karroo after topkill
This study investigated the carbon allocation patterns that enable the spindle form of Acacia karroa found in the HluhluweiMfolozi Park, KwaZulu-Natal, to survive repeated and frequent topkill. The central hypotheses were that resprouting is dependent on root carbohydrate reserves and that very …
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Carbon fluxes of an extensive meadow and attempts for flux partitioning
In times of climate change and increasing carbon dioxide concentrations, three questions arise for ecosystem sciences: At first, which ecosystems can contribute to mitigate those processes? Secondly, how will ecosystems react on the changing conditions? And finally, is the performance of our …
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Growth and Physiological Responses to Fertilizer Application in Clonal Loblolly Pine
… understanding growth responses. We investigated carbon allocation in two full-sibling clones of loblolly pine under two levels of fertilizer application over four months in a greenhouse. Using monthly harvests of some trees and ecophysiological measurements throughout, we determined carbon …
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Integrating Above and Belowground Components of Biodiversity across Spatial Scales: The Role of Host Plants in the Distribution of Arbuscular Mycorrhizal Fungi
… host plant in exchange for a purely phytogenic carbon supply. Due to their ubiquity and their functional importance, they are the subject of much research into their community ecology, yet much is still unknown. For instance: whether or not AM fungi display preference for certain host plant …
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Investigation of the Gracilaria gracilis proteome response to nitrogen limitation
… of pyruvate kinase, a key enzyme integrating carbon and nitrogen metabolic pathways, did not respond to nitrogen limitation and recovery. The effect of nitrogen limitation on G. gracilis carbon allocation patterns was briefly investigated. Intracellular G. gracilis starch levels were observed …
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Coral skeleton density banding: biotic response to changes in sea surface temperature
… and/or change in abundance of mucus, carbonic anhydrase (a molecule that catalyzes the hydration of carbon dioxide), calmodulin (a calcium-binding protein) and the change in density of gastrodermal symbiotic dinoflagellates has permitted estimates of seasonally-fluctuating carbon …
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The nitrogen cycle and ecohydrology of seasonally dry grasslands
… organization of ecosystem traits with the water, carbon, and nitrogen cycles. Observations from a factorial irrigation-fertilization experiment in a seasonally dry annual grassland are combined with a simple ecosystem model to identify relationships between vegetation, nitrogen availability, and …
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Evaluation and Application of the Community Land Model for Simulating Energy and Carbon Exchange in Agricultural Ecosystems
… and assessed CLM’s performance in simulating carbon and energy exchange for the conterminous United States. The results indicated that CLM4-Crop has a biased phenology during the early growing season and underestimated carbon emissions from corn and soybean sites. The carbon budget for the …
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Systems Analysis of Plant Responses to Drought
… traits. In wild species, limited resources drive allocation strategies that balance trade-offs between survival risks and fitness benefits, which is central to their ecology. This thesis particularly focuses on understanding a whole plant trait – carbon allocation – using divergent responses of …
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Ozone effects on red oak root dynamics
… trees was conducted. It was hypothesized that carbon reallocation to replace foliage damaged by ozone would decrease fine-root production and turnover. The red oak trees and seedlings were fumigated for three years with three levels of ozone (subambient, ambient, and 2X ambient) in open-top …
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Soybean's Future: Photosynthesis, Sucrose Transport, Dry Mass Accumulation and Yield in a Changing Atmosphere
Increasing atmospheric carbon dioxide concentration ([CO2]) is widely accepted, but the concomitant rise in tropospheric ozone concentration ([O3]) is less well publicized. Global [CO2] is expected to reach 550 ppm by the middle of this century and [O3] predicted to reach a global mean of 63 p.p.b. …
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The Meaning and Measurement of Reproductive Effort in Plants With Specific Reference to Agropyron Repens (Resource Allocation, Currency of Allocation, Allometry, Growth Analysis)
… of an organism's life history and the optimal allocation of resources to reproduction in different environments has been the subject of much theorizing. Adequate tests of these theories have been hampered by the difficulties involved in assessing reproductive effort: (1) what structures and …
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