Climate and species stress resistance modulate the higher survival of large seedlings in forest restorations worldwide

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Andivia Muñoz, Enrique and Villar-Salvador, Pedro and Oliet, Juan A. and Puertolas, Jaime and Dumroese, R. Kaesten and Ivetić, Vladan and Molina-Venegas, Rafael and Arellano, Eduardo C. and Li, Guoeli and Ovalle, Juan F. (2021) Climate and species stress resistance modulate the higher survival of large seedlings in forest restorations worldwide. Ecological applications, 31 (6). pp. 1-11. ISSN 1051-0761

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Official URL: https://doi.org/10.1002/eap.2394



Abstract

Seedling planting plays a key role in active forest restoration and regeneration of managed stands. Plant attributes at outplanting can determine tree seedling survival and consequently early success of forest plantations. Although many studies show that large seedlings of the same age within a species have higher survival than small ones, others report the opposite. This may be due to differences in environmental conditions at the planting site and in the inherent functional characteristics of species. Here, we conducted a global-scale meta-analysis to evaluate the effect of seedling size on early outplanting survival. Our meta-analysis covered 86 tree species and 142 planting locations distributed worldwide. We also assessed whether planting site aridity and key plant functional traits related to abiotic and biotic stress resistance and growth capacity, namely specific leaf area and wood density, modulate this effect. Planting large seedlings within a species consistently increases survival in forest plantations worldwide. Species’ functional traits modulate the magnitude of the positive seedling size–outplanting survival relationship, showing contrasting effects due to aridity and between angiosperms and gymnosperms. For angiosperms planted in arid/semiarid sites and gymnosperms in subhumid/ humid sites the magnitude of the positive effect of seedling size on survival was maximized in species with low specific leaf area and high wood density, characteristics linked to high stress resistance and slow growth. By contrast, high specific leaf area and low wood density maximized the positive effect of seedling size on survival for angiosperms planted in subhumid/humid sites. Results have key implications for implementing forest plantations globally, especially for adjusting nursery cultivation to species’ functional characteristics and planting site aridity. Nursery cultivation should promote large seedlings, especially for stress sensitive angiosperms planted in humid sites and for stress-resistant species planted in dry sites.


Item Type:Article
Additional Information:

CRUE-CSIC (Acuerdos Transformativos 2021)

Uncontrolled Keywords:Afforestation; Forest plantations; Forest restoration; Outplanting performance; Reforestation; Seedling quality; Specific leaf area; Wood density
Subjects:Medical sciences > Biology > Botany
Medical sciences > Biology > Ecology
ID Code:69696
Deposited On:24 Jan 2022 14:45
Last Modified:18 Feb 2022 08:24

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