The development of a generic model for assessing the effects of elevated CO{sub 2} on ecosystems. Progress report, September 1, 1987--May 31, 1988

Technical Report · Sat Dec 31 00:00:00 EST 1988

DOI:https://doi.org/10.2172/10191664· OSTI ID:10191664

Reynolds, J F; Dougherty, R L; Harley, P C; Hilbert, D W; Skiles, J W

Nitrogen concentrations in leaves vary in response to resource availability, generally increasing with increasing light or soil nitrogen and decreasing when plants are grown at higher than ambient carbon dioxide concentrations. This decrease in leaf nitrogen which commonly occurs at elevated levels of carbon dioxide Is intriguing and important for a number of reasons. Since leaf nitrogen and photosynthetic capacity are correlated, plants grown at high levels of carbon dioxide often do not display remarkable increases in growth and productivity. This study asks: (1) Is decreased leaf nitrogen in plants grown at elevated carbon dioxide levels an adaptive response of plants? and (2) Is this response predictable and consistent with responses to light and nutrition?

• Research Organization: San Diego State Univ., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG03-86ER60490
• OSTI ID: 10191664
• Report Number(s): DOE/ER/60490-T5; ON: DE95002128; BR: HA0205000/KP0500000
• Resource Relation: Other Information: PBD: [1988]
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
54 ENVIRONMENTAL SCIENCES
ECOSYSTEMS
MATHEMATICAL MODELS
PHOTOSYNTHESIS
SIMULATION
PARAMETRIC ANALYSIS
PROGRESS REPORT
BIOLOGICAL MODELS
LEAVES
CANOPIES
CARBON DIOXIDE
NITROGEN
OAKS
TEMPERATURE DEPENDENCE
RESPIRATION
TRANSPIRATION
WATER USE
VISIBLE RADIATION
STOMATA
550200
540210
BIOCHEMISTRY
BASIC STUDIES