Data from: Decoupling between growth rate and storage remobilization in broadleaf temperate tree species ...
1. Temperate trees rely on carbon (C) and nutrient remobilisation from storage to resume growth after winter. Minimum storage levels during the growing season suggest that remobilisation could signify that C availability is insufficient to meet growth demands; consequently, growth might be C and/or...
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| Format: | Dataset |
| Language: | English |
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Dryad
2020
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| Online Access: | https://dx.doi.org/10.5061/dryad.k6djh9w3x https://datadryad.org/stash/dataset/doi:10.5061/dryad.k6djh9w3x |
| Summary: | 1. Temperate trees rely on carbon (C) and nutrient remobilisation from storage to resume growth after winter. Minimum storage levels during the growing season suggest that remobilisation could signify that C availability is insufficient to meet growth demands; consequently, growth might be C and/or nutrient limited. However, it remains unclear whether higher growth demands are covered by higher remobilization. This study examined whether higher C and nutrient demands associated with fast growth or deciduousness, rely on greater remobilisation. 2. In 11 sympatric deciduous and evergreen angiosperm tree species from southern South América, the magnitude of seasonal remobilisation of C and nutrient storage was assessed as the seasonal minimums (relative to seasonal maximums) of whole tree non-structural carbohydrates (NSC), nitrogen (N), and phosphorus (P) concentrations and pools. The basal area increment and stem wood density were determined for each tree, from which the biomass radial increment (BRI) was ... : Seasonal sampling of the dominant tree species of four cold-temperate forests was performed in Patagonia, specifically in the Aysén region of Chile. The sites were: Aiken (45°27´S, 72°44´W, 45 m a.s.l.), Coyhaique (45°32´S, 72°03´W, 466 m a.s.l.), Tranquilo (46°38´S, 72°47´W, 331 m a.s.l.) and Exploradores (46°29´S, 73°09´W, 137 m a.s.l.). In each forest, six unshaded and healthy juvenile trees of two winter deciduous species (Nothofagus antarctica and Ribes magellanicum, Na and Rm, respectively) and two to five evergreen angiosperm species (Nothofagus nitida (Nn), Embothrium coccineum (Ec), Aristotelia chilensis (Ac), Myrceugenia planipes (Mp), Luma apiculata (La), Nothofagus dombeyi (Nd), Rhaphithamnus spinosus (Ra), Nothofagus betuloides (Nb), Drimys winteri (Dw)) were selected for chemical analyses and to measure radial growth. Coarse roots, stems, branches, twigs, and new leaves were sampled between 10:00 and 16:00 h at a single time point (hereafter referred to as “sampling date”), which corresponded ... |
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