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Size-dependent and environment-mediated shifts in leaf traits of a deciduous tree species in a subtropical forest. | LitMetric

AI Article Synopsis

Article Abstract

Aims: Understanding the joint effects of plant development and environment on shifts of intraspecific leaf traits will advance the understandings of the causes of intraspecific trait variation. We address this question by focusing on a widespread species in a subtropical broad-leaved forest.

Methods: We sampled 262 individuals of . at two major topographic habitat types, the slope and hilltop, within the karst forests in Maolan Nature Reserve in southwestern China. We measured individual plant level leaf traits (i.e., specific leaf area (SLA), leaf area, leaf dry-matter content (LDMC), and leaf thickness) that are associated with plant resource-use strategies. We adopted a linear mixed-effects model in which the plant size (i.e., the first principal component of plant basal diameter and plant height) and environmental factors (i.e., topographic habitat, canopy height, and rock-bareness) were used as independent variables, to estimate their influences on the shifts of leaf traits.

Key Results: We found that (1) plant size and the environmental factors independently drove the intraspecific leaf trait shifts of . , of which plant size explained less variances than environmental factors. (2) With increasing plant size, . individuals had increasingly smaller SLA but larger sized leaves. (3) The most influential environmental factor was topographic habitat; it drove the shifts of all the four traits examined. individuals on hilltops had leaf traits representing more conservative resource-use strategies (e.g., smaller SLA, higher LDMC) than individuals on slopes. On top of that, local-scale environmental factors further modified leaf trait shifts.

Conclusions: Plant size and environment independently shaped the variations in intraspecific leaf traits of . in the subtropical karst forest of Maolan. Compared with plant size, the environment played a more critical role in shaping intraspecific leaf trait variations, and potentially also the underlying individual-level plant resource-use strategies.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8809444PMC
http://dx.doi.org/10.1002/ece3.8516DOI Listing

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