气候变化领域集成服务门户(CCPortal): Long-term monitoring reveals the effect of precipitation and silviculture on Nothofagus regeneration in Northern Patagonia mixed forests

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DOI	10.1186/s13717-024-00509-5
	Long-term monitoring reveals the effect of precipitation and silviculture on Nothofagus regeneration in Northern Patagonia mixed forests
	Sola, Georgina; Mateo, Camila; Dezzotti, Alejandro; Marchelli, Paula; Beltran, Hernan Attis; Sbrancia, Renato; Chauchard, Luis; Penalba, Marcelo Gonzalez; Lara, Martin; El Mujtar, Veronica
发表日期	2024
EISSN	2192-1709
起始页码	13
结束页码	1
卷号	13 期号:1
英文摘要	Background Tree regeneration is a key component of resilience because it promotes post-disturbance recovery of forests. Northwestern Patagonia from Argentina is occupied by Nothofagus alpina (Na), N. obliqua (No), and N. dombeyi (Nd) forests that grow along an intense precipitation gradient, managed throughout shelterwood silvicultural system by technicians of the Lanin Natural Reserve. The objective of this study was to evaluate the influence of seeding cuttings over the dynamics of Nothofagus mixed forests across landscape (precipitation gradient) based mainly on the composition and abundance of tree regeneration, permanent sampling plots and generalized linear mixed models. In particular, we analysed: (i) the structure of sexual and asexual regeneration during < 10, 10-20 and > 20 years after harvest (the dynamics of managed forests), and (ii) the structure of sexual regeneration in primary and managed forests after > 20 years of harvest (the effect of silviculture). Results Nd was the most abundant species in the regeneration of managed forests during all periods in both sites despite its lower contribution to the adult cohort. During the 10-20 years period after harvest, the humid site exhibited higher regeneration density than the mesic site (120,000 and 6000 ind ha(-1), respectively), and it decreased afterwards. The number of established regeneration (> 2 m height) was lower for Na in the mesic site and for No in the humid site (0 and 57 ind ha(-1), respectively). However, in comparison to No, Na showed a higher number of sprouted stumps and sprouts per stump, and a higher sprout height in the mesic site. No exhibited higher sprout mortality in the humid site. Finally, the regeneration of primary forests showed lower density and height, and a more balanced composition than that of managed forests. Conclusions The silvicultural effects on the mixed forest regeneration dynamics was strongly influenced by the condition of sites. Therefore, management prescriptions should be adjusted in order to consider the environmental variation occurring through the entire landscape. An adaptive management that considers the pattern and process of sexual and asexual regeneration and disturbance will contribute to promote a greater resilience of mixed forest ecosystems.
英文关键词	Nothofagus alpina; Nothofagus obliqua; Nothofagus dombeyi; Basal sprouting; Shelterwood silvicultural system; Ecological resilience
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
WOS记录号	WOS:001195638700002
来源期刊	ECOLOGICAL PROCESSES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305651
作者单位	Instituto Nacional de Tecnologia Agropecuaria (INTA)
推荐引用方式 GB/T 7714	Sola, Georgina,Mateo, Camila,Dezzotti, Alejandro,et al. Long-term monitoring reveals the effect of precipitation and silviculture on Nothofagus regeneration in Northern Patagonia mixed forests[J],2024,13(1).
APA	Sola, Georgina.,Mateo, Camila.,Dezzotti, Alejandro.,Marchelli, Paula.,Beltran, Hernan Attis.,...&El Mujtar, Veronica.(2024).Long-term monitoring reveals the effect of precipitation and silviculture on Nothofagus regeneration in Northern Patagonia mixed forests.ECOLOGICAL PROCESSES,13(1).
MLA	Sola, Georgina,et al."Long-term monitoring reveals the effect of precipitation and silviculture on Nothofagus regeneration in Northern Patagonia mixed forests".ECOLOGICAL PROCESSES 13.1(2024).