caa a22 4500 463218485 CHVBK 20180405153205.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s11056-006-9019-2 doi (NATIONALLICENCE)springer-10.1007/s11056-006-9019-2 The impact of shade on morphology, growth and biomass allocation in Picea sitchensis , Larix × eurolepis and Thuja plicata [Elektronische Daten] [Seamus Kennedy, Kevin Black, Conor O'Reilly, Áine Ní Dhubháin] To determine the effect of shade on morphology, growth and biomass allocation in Picea sitchensis, Larix×eurolepis and Thuja plicata, seedlings were grown in the open or under shadehouses providing 25%, 50% and 75% reductions of full-light for two growing seasons. For most of the characteristics assessed there was no significant interaction between species and shade indicating that the morphological responses to changing shade treatments were not species-dependent. After two growing seasons the mean height increment for the three species was significantly greater in 25% (76.1cm) and 50% shade (74.9cm) than in the open (69.5cm). Root collar diameter increment, shoot, root and total biomass declined significantly with increasing shade while the opposite was true for the height:diameter ratio. In both western red cedar and hybrid larch the shoot:root ratio was significantly greater in the shade while in Sitka spruce this characteristic was not influenced by shade. While all species had significantly greater specific shoot areas in 75% shade than in 0% shade, this trend was particularly pronounced in hybrid larch. In hybrid larch and western red cedar, the normalised specific projected shoot area increased significantly with increasing shade. The opposite trend was observed for Sitka spruce. We conclude that in the main the species studied demonstrated similar shade acclimation responses despite their reported differences in shade tolerance. Springer Science+Business Media B.V., 2006 Shadehouses nationallicence Height increment nationallicence Root collar diameter increment nationallicence Specific shoot area nationallicence Shade tolerance nationallicence Kennedy Seamus School of Biology and Environmental Science, University College Dublin, 4, Belfield, Dublin, Ireland aut Black Kevin School of Biology and Environmental Science, University College Dublin, 4, Belfield, Dublin, Ireland aut O'Reilly Conor School of Biology and Environmental Science, University College Dublin, 4, Belfield, Dublin, Ireland aut Ní Dhubháin Áine School of Biology and Environmental Science, University College Dublin, 4, Belfield, Dublin, Ireland aut New Forests Kluwer Academic Publishers 33/2(2007-03-01), 139-153 0169-4286 33:2<139 2007 33 11056 https://doi.org/10.1007/s11056-006-9019-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11056-006-9019-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kennedy Seamus School of Biology and Environmental Science, University College Dublin, 4, Belfield, Dublin, Ireland aut NATIONALLICENCE 700 1- Black Kevin School of Biology and Environmental Science, University College Dublin, 4, Belfield, Dublin, Ireland aut NATIONALLICENCE 700 1- O'Reilly Conor School of Biology and Environmental Science, University College Dublin, 4, Belfield, Dublin, Ireland aut NATIONALLICENCE 700 1- Ní Dhubháin Áine School of Biology and Environmental Science, University College Dublin, 4, Belfield, Dublin, Ireland aut NATIONALLICENCE 773 0- New Forests Kluwer Academic Publishers 33/2(2007-03-01), 139-153 0169-4286 33:2<139 2007 33 11056 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer