气候变化领域集成服务门户(CCPortal): Quality evaluation of Nothofagus pumilio seeds linked to forest management and climatic events

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DOI	10.1186/s13717-024-00485-w
	Quality evaluation of Nothofagus pumilio seeds linked to forest management and climatic events
	Rodriguez-Souilla, Julian; Chaves, Jimena E.; Lencinas, Maria Vanessa; Cellini, Juan Manuel; Roig, Fidel A.; Peri, Pablo L.; Pastur, Guillermo Martinez
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 Forest ecosystems undergo significant transformations due to harvesting and climate fluctuations, emphasizing the critical role of seeding in natural regeneration and long-term structural preservation. Climate change further amplifies these dynamics, affecting phenology across species and regions. In Tierra del Fuego (Argentina), Nothofagus pumilio (lenga) forests represent the most important timber resource, and it is managed through different silvicultural strategies. This species demonstrates notable post-disturbance regeneration, yet seed fall exhibits significant variability, leading to variations in seed quality (e.g., viability). This study aims to assess fluctuations in N. pumilio seed quality, determine how it varies concerning forest management strategies, annual productivity, and the co-occurrence of climatic phenomena including El Nino-Southern Oscillation (ENSO) and the Southern Annular Mode (SAM).Results Viable seeds represented 18.4% of the total, notably higher in unharvested than in managed areas. Conversely, empty seeds were more prevalent in harvested areas (> 75%). Seed quality exhibited significant differences across silvicultural treatments, except for insect-predated seeds, which had similar proportions across all areas, though dispersed retention showed higher predation. When considering years with varying production levels, high-production years favoured full and viable seeds, particularly in unharvested forests and aggregated retention, while low-production years saw reduced viability across all treatments. Quadratic models revealed that viability increased with seed production, where unharvested forests achieved the highest values. Climate variability influenced seed proportions, where ENSO+/SAM+ promoting more full and viable seeds, while ENSO-/SAM+ favoured non-predated seeds, especially in unharvested stands.Conclusions Seed quality varies among treatments and years with different levels of seeding. Variations in seed quality, linked to climatic events, influence seed viability. Seed quality plays a critical role in forest regeneration, ensuring a seedling bank for harvested stands to face climate variability. These findings are relevant for forest management and ecosystem services, considering the increasing climate variability and extreme events. Understanding these influences is crucial for Nothofagus pumilio forests' sustainability and global forest adaptation strategies.
英文关键词	Forest management; Seeding; Climate change; Extreme event; Patagonia
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
WOS记录号	WOS:001147832700001
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/290770
作者单位	Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); National University of La Plata; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Universidad Nacional de la Patagonia San Juan Bosco; Instituto Nacional de Tecnologia Agropecuaria (INTA)
推荐引用方式 GB/T 7714	Rodriguez-Souilla, Julian,Chaves, Jimena E.,Lencinas, Maria Vanessa,et al. Quality evaluation of Nothofagus pumilio seeds linked to forest management and climatic events[J],2024,13(1).
APA	Rodriguez-Souilla, Julian.,Chaves, Jimena E..,Lencinas, Maria Vanessa.,Cellini, Juan Manuel.,Roig, Fidel A..,...&Pastur, Guillermo Martinez.(2024).Quality evaluation of Nothofagus pumilio seeds linked to forest management and climatic events.ECOLOGICAL PROCESSES,13(1).
MLA	Rodriguez-Souilla, Julian,et al."Quality evaluation of Nothofagus pumilio seeds linked to forest management and climatic events".ECOLOGICAL PROCESSES 13.1(2024).