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Showing 1 to 14 of 14 for “"C4 plant"”.
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Can phytoliths from Sorghum bicolor, a C4 plant, be indicators of past water availability?
… be visible in the archaeological record. C3 plants have been the focus of phytolith research regarding past water availability. Research has proven that phytoliths from C3 plants can indicate past water availability (Madella et al. 2009; Weiskopf et al. 2014; Jenkins et al. 2016). However …
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A Stable Isotopic (Carbon And Nitrogen) Evaluation Of Regional Differences In Herded Animal Diet And Pastoral Risk Management Practices During The Xiongnu Period Of Mongolia.
… fact is supported by the recovery of animal and plant remains from mortuary contexts, there is a dearth of research concerning the variation of mobile agro-pastoralism across the Xiongnu confederacy. This text centers on regional differences in herding patterns during the Xionngu Period (c. 300 …
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STABLE ISOTOPIC INSIGHTS INTO THE SUBSISTENCE PATTERNS OF PREHISTORIC DOGS (CANIS FAMILIARIS) AND THEIR HUMAN COUNTERPARTS IN NORTHEASTERN NORTH AMERICA
… data concerning the presence or absence of C4 resources, such as maize, in the diets of dogs. Third, this study investigates the use of dog bone as a proxy for human bone in studies assessing the presence of C4 resources at archaeological sites. The fourth goal of this study is to provide a …
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Isotopic constraints on sources and cycling of riverine dissolved inorganic carbon in the Amazon Basin
… Peru), relative contribution of C3 and C4 plant material to respiration, and atmospheric CO2 invasion in turbulent rivers. Lowland rivers are predominantly supersaturated in pCO2 and carry young DIC. Aged lowland DIC occurs only in carbonate lithologies, some small streams, and …
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Soil geomorphology of the eastern Sevilleta Long Term Ecological Research Site
… >50 cm of depth reflect buried rooting zones of plant assemblages that occurred in the past. An association between buried soil boundaries and shifts in delta 13C carbonate depth trends indicates that changes in C3 and C4 plant assemblages have occurred in the past. These shifts may reflect …
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Genetic Transformation of Switchgrass (Panicum Virgatum L.) with Endoglucanase Gene and Characterization of Plants with Endoglucanase Transgene
… most promising biofuel crops in the USA. It is a C4 plant that makes it energy efficient. Switchgrass has a deep root system that allows it to grow on marginal land with low water and nutrient input. Switchgrass has been used as a forage crop and its use for biofuel will not affect food security. …
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Geochemical tools and paleoclimate clues : multi-molecular and isotopic investigations of tropical marine sediments and alpine ice
… records. Compounds derived from vascular plant leaf waxes and delivered to the marine sedimentary environment, including long-chain (C24-C32) nalkanoic acids, were used as proxies for terrestrial vegetation type, aridity, and atmospheric circulation. Marine biomarkers, such as sterols and …
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Using stable isotopes to trace the movements of ducks in southern Africa
… the other sites. Vegetation compositions (C3 and C4 plant distributions) therefore vary across sites influencing δ13C patterns. More mobile species (only Egyptian Goose Alopochen aegyptiacus from Strandfontein, and Cape Shoveler Anas smithii from Barberspan; determined by mobility scores from …
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Analyzing variation in plant canopy conversion efficiency and assessing canopy and leaf photosynthetic efficiency in soybean with reduced chlorophyll content
… components of yield potential, εc in C3 and C4 plant groups is estimated to be much lower than the theoretical maxima, signifying that εc limits yield potential but has room for improvement. This makes it the ideal candidate to increase yields to meet the food and fuel demand of the world …
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Life Cycle Assessment of Select Agricultural Practices: Assessing the Potential for Climate Mitigation
… show that carbon fertilization of soybean, a C3 plant, may contribute to an increase in yield of 3% to 22% while its contribution to the growth of corn, a C4 plant, will be much lower. The second study focused on land-based carbon sequestration possibilities. Land-based carbon sequestration …
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High-throughput phenotyping and genetic mapping of drought stress related traits in setaria (Setaria spp) and rice (Oryza spp)
… experiments were conducted in Setaria, a model C4 crop, and rice, a model C3 crop, in order to understand their response to managed water stress conditions. Chapters 2 and 3 are focused on phenotyping and genetic mapping for water-use efficiency (WUE) related traits in different Setaria …
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STABLE ISOTOPE RATIOS AS A PROXY FOR HUMAN GEOGRAPHIC PROVENANCE: BIOGEOGRAPHICAL EVIDENCE FROM THE 2H, 18O, AND 13C SIGNATURES IN MODERN HUMAN TEETH
… mean = -10.37 ‰), which suggested a persistent C4 plant dietary influence at the time the sampled tooth enamel was forming and is consistent with the typical North American diet. While inter-subject variation contributed the largest proportion of total d13C variability, differences were not …
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Strategies to improve C4 photosynthesis, water and resource-use efficiency under different atmospheres, temperatures, and light environments
… resilient, and require minimal use of inputs. Plants using C4 photosynthesis display many of these traits: in C4 leaves, a biochemical carbon-concentrating mechanism significantly boosts photosynthetic efficiency and overall productivity, while improving the efficiency with which key inputs …