Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Life Sciences
Comparative Gas-Exchange In Leaves Of Intact And Clipped, Natural And Planted Cherrybark Oak (Quercus Pagoda Raf.) Seedlings, Brian Roy Lockhart, John D. Hodges
Comparative Gas-Exchange In Leaves Of Intact And Clipped, Natural And Planted Cherrybark Oak (Quercus Pagoda Raf.) Seedlings, Brian Roy Lockhart, John D. Hodges
Journal of the Arkansas Academy of Science
Gas-exchange measurements, including CO2 -exchange rate (net photosynthesis), stomatal conductance, and transpiration, were conducted on intact and clipped cherrybark oak (Quercus pagoda Raf.) seedlings growing in the field and in a nursery bed. Seedlings in the field, released from midstory and understory woody competition, showed significant increases in gas-exchange compared to non-released seedlings due to increases in light levels reaching seedlings. Concurrently, little difference occurred in the CO2 -exchange rate between intact and clipped seedlings in the released treatment although clipped seedlings maintained a consistently greater rate of stomatal conductance. In order to reduce the high variability of light levels …