气候变化领域集成服务门户(CCPortal): Prescribed fire promotes acorn survival and seedling emergence from simulated caches

CCPortal

DOI	10.1016/j.foreco.2020.118063
	Prescribed fire promotes acorn survival and seedling emergence from simulated caches
	Greenler S.M.; Swihart R.K.; Saunders M.R.
发表日期	2020
ISSN	0378-1127
卷号	464
英文摘要	Prescribed fire increasingly is used to promote oak (Quercus) establishment in many hardwood forests across North America. However, how prescribed fire affects several key components of the oak regeneration process, including acorn survival and germination, is relatively unknown. Acorn mortality during a prescribed fire is likely affected by acorn dormancy, burn season, and previous burial (caching) by scatterhoarding rodents. We assessed the effect of fall and spring prescribed fires on seedling emergence for artificially cached and un-cached northern red oak (Q. rubra) and white oak (Q. alba) acorns in situ in granivore-proof exclosures through eight prescribed fires over two years at two sites in central Indiana. The odds of cached acorn emergence were 3.4–12.1 times higher following fall and spring prescribed fires than the unburned control. Red oak emergence was 1.7 times higher following fall burns than spring burns, whereas white oak emergence was unaffected by burn season. Lower winter temperatures following fall burns may have driven observed differences between burn seasons for northern red oak acorns. Our study links the oak-rodent conditional mutualism hypothesis with the oak-fire hypothesis, by suggesting that prescribed fire may produce environmental conditions that shift interactions between oaks and scatterhoarding rodents toward a more mutualistic relationship. © 2020 Elsevier B.V.
英文关键词	Acorn; Central hardwood forest; Conditional mutualism; Germination; Oak; Prescribed fire; Quercus
语种	英语
scopus关键词	Cultivation; Hardwoods; Mammals; Reforestation; Acorn; Conditional mutualism; Germination; Hardwood forests; Prescribed fires; Quercus; Fires; deciduous tree; environmental conditions; forest ecosystem; germination; mortality; mutualism; prescribed burning; seed; seedling emergence; Cultivation; Germination; Hardwoods; Mammals; Quercus; Reforestation; Indiana; North America; United States; Quercus; Quercus alba; Quercus rubra; Rodentia
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155328
作者单位	Department of Forestry and Natural Resources, Purdue University, 715 W. State St., West Lafayette, IN 47907, United States
推荐引用方式 GB/T 7714	Greenler S.M.,Swihart R.K.,Saunders M.R.. Prescribed fire promotes acorn survival and seedling emergence from simulated caches[J],2020,464.
APA	Greenler S.M.,Swihart R.K.,&Saunders M.R..(2020).Prescribed fire promotes acorn survival and seedling emergence from simulated caches.Forest Ecology and Management,464.
MLA	Greenler S.M.,et al."Prescribed fire promotes acorn survival and seedling emergence from simulated caches".Forest Ecology and Management 464(2020).