Search Results - "Karnosky, D.F"

Advances in understanding ozone impact on forest trees: Messages from novel phytotron and free-air fumigation studies by Matyssek, R., Karnosky, D.F., Wieser, G., Percy, K., Oksanen, E., Grams, T.E.E., Kubiske, M., Hanke, D., Pretzsch, H.

“…Recent evidence from novel phytotron and free-air ozone (O 3) fumigation experiments in Europe and America on forest tree species is highlighted in relation to…”
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New exposure-based metric approach for evaluating O3 risk to North American aspen forests by Percy, K.E, Nosal, M, Heilman, W, Dann, T, Sober, J, Legge, A.H, Karnosky, D.F

“…The United States and Canada currently use exposure-based metrics to protect vegetation from O3. Using 5 years (1999-2003) of co-measured O3, meteorology and…”
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Silvicultural systems for plantation mahogany in Africa: Influences of canopy shade on tree growth and pest damage by Opuni-Frimpong, E., Karnosky, D.F., Storer, A.J., Cobbinah, J.R.

“…Overexploitation of the African mahoganies, Khaya anthotheca and K. ivorensis, could lead to their commercial extinction in the near future. Efforts to…”
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Air quality in natural areas: Interface between the public, science and regulation by Percy, K.E., Karnosky, D.F.

“…Natural areas are important interfaces between air quality, the public, science and regulation. In the United States and Canada, national parks received over…”
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Impacts of elevated CO2 and/or O3 on leaf ultrastructure of aspen (Populus tremuloides) and birch (Betula papyrifera) in the Aspen FACE experiment by OKSANEN, E, SOBER, J, KARNOSKY, D. F

“…Impacts of elevated atmospheric O3 and/or CO2 on three clones of aspen (Populus tremuloides Michx.) and birch (Betula papyrifera Marsh.) were studied to…”
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Relative susceptibility of four species of African mahogany to the shoot borer Hypsipyla robusta (Lepidoptera: Pyralidae) in the moist semideciduous forest of Ghana by Opuni-Frimpong, E., Karnosky, D.F., Storer, A.J., Abeney, E.A., Cobbinah, J.R.

“…We examined the relative susceptibility of four mahogany species, Khaya ivorensis, Khaya anthotheca, Entandrophragma angolense, and E. utile, to Hypsipyla…”
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Effects of elevated CO2 and O3 on aspen clones varying in O3 sensitivity: can CO2 ameliorate the harmful effects of O3 by WUSTMAN, B. A, OKSANEN, E, KARNOSKY, D. F, NOORMETS, A, ISEBRANDS, J. G, PREGITZER, K. S, HENDREY, G. R, SOBER, J, PODILA, G. K

“…To determine whether elevated CO2 reduces or exacerbates the detrimental effects of O3 on aspen (Populus tremuloides Michx.). aspen clones 216 and 271 (O3…”
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The impact of carbon dioxide and other greenhouse gases on forest ecosystems Report No 3 of the IUFRO Task Force on Environmental Change by Karnosky, D. F, Ceulemans, R, Scarascia-Mugnozza, G. E, Innes, J. L

“…This book, which will be of interest to advanced students and researchers in forestry, tree physiology and ecology, climate change and pollution, includes 11…”
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Perspectives regarding 50 years of research on effects of tropospheric ozone air pollution on US forests by Karnosky, David F., Skelly, John M., Percy, Kevin E., Chappelka, Art H.

“…Tropospheric ozone (O 3) was first determined to be phytotoxic to grapes in southern California in the 1950s. Investigations followed that showed O 3 to be the…”
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transcriptome of Populus in elevated CO₂ reveals increased anthocyanin biosynthesis during delayed autumnal senescence by Tallis, M.J, Lin, Y, Rogers, A, Zhang, J, Street, N.R, Miglietta, F, Karnosky, D.F, De Angelis, P, Calfapietra, C, Taylor, G

“…The delay in autumnal senescence that has occurred in recent decades has been linked to rising temperatures. Here, we suggest that increasing atmospheric CO₂…”
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Tropospheric O₃ compromises net primary production in young stands of trembling aspen, paper birch and sugar maple in response to elevated atmospheric CO₂. [Erratum: 2005 Dec., v. 168, no. 3, p. 707.] by King, John S., Kubiske, Mark E., Pregitzer, Kurt S., Hendrey, George R., McDonald, Evan P., Giardina, Christian P., Quinn, Vanessa S., Karnosky, David F.

“…$\bullet$ Concentrations of atmospheric CO2 and tropospheric ozone (O3) are rising concurrently in the atmosphere, with potentially antagonistic effects on…”
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Gene expression patterns of trembling aspen trees following long-term exposure to interacting elevated CO2 and tropospheric O3. [Erratum: 2005 Aug., v. 167, no. 2, p. 633.] by Gupta, P, Duplessis, S, White, H, Karnosky, D.F, Martin, F, Podila, G.K

“…Summary •  Expression of 4600 poplar expressed sequence tags (ESTs) was studied over the 2001–2002 growing seasons using trees of the moderately ozone…”
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Ozone-induced H2O2 accumulation in field-grown aspen and birch is linked to foliar ultrastructure and peroxisomal activity by Oksanen, E, Haikio, E, Sober, J, Karnosky, D.F

“…Summary •  Saplings of three aspen (Populus tremuloides) genotypes and seedlings of paper birch (Betula papyrifera) were exposed to elevated ozone (1.5×…”
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New exposure-based metric approach for evaluating O 3 risk to North American aspen forests by Percy, K.E., Nosal, M., Heilman, W., Dann, T., Sober, J., Legge, A.H., Karnosky, D.F.

“…The United States and Canada currently use exposure-based metrics to protect vegetation from O 3. Using 5 years (1999–2003) of co-measured O 3, meteorology and…”
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Regional tree growth reductions due to ambient ozone: evidence from field experiments by Wang, Deane, Bormann, F. Herbert, Karnosky, David F

“…Experimental evidence from open-top chamber field studies indicates that ambient ozone levels at levels below the ambient air Quality standard of 235 mg/cu M…”
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Potential for forest tree improvement via tissue culture by Karnosky, David F.

“…This paper presents some ways in which the rapidly growing tissue culture technology may be a useful adjunct to traditional forest tree improvement programs…”
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Growth responses of Populus tremuloides clones to interacting elevated carbon dioxide and tropospheric ozone by Isebrands, J.G, McDonald, E.P, Kruger, E, Hendrey, G, Percy, K, Pregitzer, K, Sober, J, Karnosky, D.F

“…Elevated ozone negates expected positive growth effects of elevated CO 2 in Populus tremuloides in the field. The Intergovernmental Panel of Climate Change…”
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Carbon gain and bud physiology in Populus tremuloides and Betula papyrifera grown under long-term exposure to elevated concentrations of CO2 and O3 by Riikonen, J, Kets, K, Darbah, J, Oksanen, E, Sober, A, Vapaavuori, E, Kubiske, M.E, Nelson, N, Karnosky, D.F

“…Paper birch (Betula papyrifera Marsh.) and three trembling aspen clones (Populus tremuloides Michx.) were studied to determine if alterations in carbon gain in…”
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Impacts of greenhouse gases on epicuticular waxes of Populus tremuloides Michx.: Results from an open-air exposure and a natural O 3 gradient by Maňkovská, B., Percy, K.E., Karnosky, D.F.

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Special issue preface by Karnosky, D.F

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