Physical Sciences and Mathematics Commons^™

Algal Biofuel, Feb 5, 2010, Harry Reid Center, University Of Nevada, Las Vegas

Biofuels

News in Brief

1. UVa engineers find significant environmental impacts with algae-based biofuel (Jan-21, 2010)

2. IPCC scientist: Global cooling headed our way for the next 30 years? (Jan 11, 2010)

3. Shining a Light on Plants' Quantum Secret to Boost Photosynthesis (Feb 3, 2010)

Modeling Whole-Tree Carbon Assimilation Rate Using Observed Transpiration Rates And Needle Sugar Carbon Isotope Ratios, Jia Hu, David J. P. Moore, Diego Andrés Riveros-Iregui, Sean P. Burns, Russell K. Monson

School of Natural Resources: Faculty Publications

• Understanding controls over plant–atmosphere CO₂ exchange is important for quantifying carbon budgets across a range of spatial and temporal scales. In this study, we used a simple approach to estimate whole-tree CO₂ assimilation rate (A_Tree) in a subalpine forest ecosystem.
• We analysed the carbon isotope ratio (δ¹³C) of extracted needle sugars and combined it with the daytime leaf-to-air vapor pressure deficit to estimate tree water-use efficiency (WUE). The estimated WUE was then combined with observations of tree transpiration rate (E) using sap flow techniques to estimate A_Tree. …