Refine search
Results 1-10 of 12
Consequences of elevated CO2 and O3 on birch canopy structure
2002
Kull, O. (University of Tartu, Tartu (Estonia). Institute of Botany and Ecology) | Tulva, I. | Vapaavuori, E.
We studied elevated CO2 and ozone effects in single and in combination on crown structure of two Betula pendula clones. Shoot ramification, shoot length, number of metamers, leaves and buds were measured at four heights in every tree. Chamber effect was substantial on sylleptic branching and on shoot length and ramification. However these responses differed between the clones. Ozone treatment affected shoot length and caused slight decrease in shoot ramification. Elevated CO2 affected appearance of long shoots in complex manner, but in lower crown positions CO2 caused increased number of long shoots in both clones
Show more [+] Less [-]Vertical gradients of ozone and carbon dioxide within a deciduous forest in central Pennsylvania
1996
Skelly, J.M. | Fredericksen, T.S. | Savage, J.E. | Snyder, K.R. (Department of Plant Pathology, Pennsylvania State University, 108 Buckhout Laboratory, University Park, PA 16802 (USA))
Throughfall below grassland canopies: a comparison of conventional and ion exchange methods
1991
Dam, D. van | Heil, G.W. | Heijne, B. | Bobbink, R. (Department of Plant Ecology and Evolutionary Biology, Utrecht University, 3512 PN Utrecht (Netherlands))
Loss of particulate contaminants from plant canopies under wet and dry conditions
1996
Kinnersley, R.P. | Shaw, G. | Bell, J.N.B. | Minski, M.J. | Goddard, A.J.H. (Centre for Analytical Research in the Environment, Imperial College at Silwood Park, Ascot, Berkshire SL5 7TE (United Kingdom))
The European critical levels for ozone: improving their usage
1999
Grunhage, L. | Jager, H.J. | Haenel, H.D. | Lopmeier, F.J. | Hanewald, K. (Institute for Plant Ecology, University of Giessen, Heinrich-Buff-Ring 38, D-35392 Giessen, Germany)
Effects of nitrogen deposition on field layer vegetation in south Swedish oak forests
1998
Brunet, J. | Diekmann, M. | Falkengren-Grerup, U. (Department of Conservation Biology, Swedish University of Agricultural Sciences, Box 7002, S-750 07 Uppsala (Sweden))
Physiology, morphology, and ozone uptake of leaves of black cherry seedlings, saplings, and canopy trees
1995
Fredericksen, T.S. | Joyce, B.J. | Skelly, J.M. | Steiner, K.C. | Kolb, T.E. | Kouterick, K.B. | Savage, J.E. | Snyder, K.R. (Environmental Resources Research Institute, 220 Forest Resource Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802 (USA))
Forest canopy transformation of atmospheric deposition
1988
Bredemeier, M. (Goettingen Univ. (Germany, F.R.). Research Centre of Forest Ecosystems and Forest Decline)
Atmospheric deposition in forest edges measured by monitoring canopy throughfall
1988
Draaijers, G.P.J. (Rijksuniversiteit Utrecht (Netherlands). Dept. of Physical Geography) | Ivens, W.P.M.F. | Bleuten, W.
Acid deposition affects the forest canopy internal circulation of nutrient
1999
Kubiznakova, J. (Czech Academy of Sciences, Prague (Czech Republic))
