Zobrazeno 1 - 10
of 123
pro vyhledávání: '"David F. Karnosky"'
Autor:
Joseph N. T. Darbah, Mark E. Kubiske, Neil Nelson, Elina Oksanen, Elina Vaapavuori, David F. Karnosky
Publikováno v:
The Scientific World Journal, Vol 7, Pp 240-246 (2007)
Atmospheric CO2 and tropospheric O3 are rising in many regions of the world. Little is known about how these two commonly co-occurring gases will affect reproductive fitness of important forest tree species. Here, we report on the long-term effects o
Externí odkaz:
https://doaj.org/article/72c15d5fe8e0446a80d1cda898a1e332
Autor:
Kevin E. Percy, Mark E. Kubiske, Johanna Riikonen, Minna Kivimäenpää, Elina Vapaavuori, David F. Karnosky, Neil D. Nelson
Publikováno v:
Environmental Pollution. 158:1029-1035
Betula papyrifera trees were exposed to elevated concentrations of CO(2) (1.4 x ambient), O(3) (1.2 x ambient) or CO(2) + O(3) at the Aspen Free-air CO(2) Enrichment Experiment. The treatment effects on leaf surface characteristics were studied after
Publikováno v:
Environmental Pollution. 158:969-976
The effects of elevated concentrations of atmospheric tropospheric ozone (O(3)) on DNA damage in five trembling aspen (Populus tremuloides Michx.) clones growing in a free-air enrichment experiment in the presence and absence of elevated concentratio
Publikováno v:
Environmental Pollution. 158:1023-1028
Early spring leaf out is important to the success of deciduous trees competing for light and space in dense forest plantation canopies. In this study, we investigated spring leaf flush and how long-term growth at elevated carbon dioxide concentration
Publikováno v:
Environmental Pollution. 158:1008-1014
The effect of high temperature on photosynthesis of isoprene-emitting (aspen) and non-isoprene-emitting (birch) trees were measured under elevated CO(2) and ambient conditions. Aspen trees tolerated heat better than birch trees and elevated CO(2) pro
Publikováno v:
Environmental Pollution. 158:1000-1007
The diurnal changes in light-saturated photosynthesis (Pn) under elevated CO(2) and/or O(3) in relation to stomatal conductance (g(s)), water potential, intercellular [CO(2)], leaf temperature and vapour-pressure difference between leaf and air (VPD(
Publikováno v:
Environmental Pollution. 158:992-999
The effect of elevated CO(2) and O(3) on apparent quantum yield (varphi), maximum photosynthesis (P(max)), carboxylation efficiency (V(cmax)) and electron transport capacity (J(max)) at different canopy locations was studied in two aspen (Populus tre
Autor:
Mikael Brosché, Mikko Kolehmainen, Elina Vapaavuori, Ramesh Thakur, Elina Oksanen, Sari Kontunen-Soppela, Juha Parviainen, Jaakko Kangasjärvi, Markku Keinänen, Hanna Ruhanen, David F. Karnosky
Publikováno v:
Environmental Pollution. 158:959-968
Gene expression responses of paper birch ( Betula papyrifera ) leaves to elevated concentrations of CO 2 and O 3 were studied with microarray analyses from three time points during the summer of 2004 at Aspen FACE. Microarray data were analyzed with
Autor:
Shawna L. Naidu, Victoria E. Wittig, Elizabeth A. Ainsworth, David F. Karnosky, Stephen P. Long
Publikováno v:
Global Change Biology. 15:396-424
The northern hemisphere temperate and boreal forests currently provide an important carbon sink; however, current tropospheric ozone concentrations ([O₃]) and [O₃] projected for later this century are damaging to trees and have the potential to r
Autor:
Carlo Calfapietra, Giuseppe Scarascia Mugnozza, Thomas D. Sharkey, David F. Karnosky, Francesco Loreto
Publikováno v:
New phytologist
179 (2008): 55–61. doi:10.1111/j.1469-8137.2008.02493.x
info:cnr-pdr/source/autori:Calfapietra C. (1,2); G. Scarascia Mugnozza (1,2); D.F. Karnosk (3); F. Loreto (1); T.D. Sharkey (4)/titolo:Isoprene emission rates under elevated CO2 and O3 in two field-grown aspen clones differing for their sensitivity to O3./doi:10.1111%2Fj.1469-8137.2008.02493.x/rivista:New phytologist (Print)/anno:2008/pagina_da:55/pagina_a:61/intervallo_pagine:55–61/volume:179
179 (2008): 55–61. doi:10.1111/j.1469-8137.2008.02493.x
info:cnr-pdr/source/autori:Calfapietra C. (1,2); G. Scarascia Mugnozza (1,2); D.F. Karnosk (3); F. Loreto (1); T.D. Sharkey (4)/titolo:Isoprene emission rates under elevated CO2 and O3 in two field-grown aspen clones differing for their sensitivity to O3./doi:10.1111%2Fj.1469-8137.2008.02493.x/rivista:New phytologist (Print)/anno:2008/pagina_da:55/pagina_a:61/intervallo_pagine:55–61/volume:179
Isoprene is the most important nonmethane hydrocarbon emitted by plants. The role of isoprene in the plant is not entirely understood but there is evidence that it might have a protective role against different oxidative stresses originating from hea