CCPortal
DOI10.1016/j.foreco.2019.117725
Post-fire regeneration of endangered limber pine (Pinus flexilis) at the northern extent of its range
Dawe D.A.; Peters V.S.; Flannigan M.D.
发表日期2020
ISSN0378-1127
卷号457
英文摘要Limber pine (Pinus flexilis), an understudied tree species important to montane and subalpine ecosystems, is listed as endangered in Alberta. Dispersal of seeds to newly disturbed, open areas by Clark's nutcracker (Nucifraga columbiana) is expected to facilitate post-disturbance establishment of limber pine. Prescribed burning has thus been proposed as a tool to stimulate natural regeneration, but no studies have yet surveyed limber pine's regenerative response to disturbance at the northernmost extent of its range. We examined post-fire regeneration in one prescribed burn and one wildfire at the northern edge of limber pine's distribution and compared this to a regeneration baseline of plots in nearby unburned limber pine acting as seed sources to the burns. Using a likelihood-based approach, we then compared hypotheses of ecological processes influencing seedling occurrence and abundance. Overall, we found only six post-fire limber pine seedlings within the burns, as compared to one hundred twenty-four similarly aged seedlings found in unburned plots. Akaike information criterion (AIC) identified distance to a seed source and absence of canopy cover as hurdles for seedling establishment in the burn. Analysis of seedling abundance was performed on only the unburned dataset due to low regeneration in the burned areas surveyed; model selection here showed that when distance to a seed source is small, substrate variables, including less prevalent bare mineral soil, more rocky cover, and finer soil textures, take on an important role in driving abundance. Substrates important for limber pine abundance in unburned stands were found with similar frequency in the burns, indicating limber pine colonization post-disturbance was not substrate limited but instead constrained by other factors. Our findings suggest that extensive prescribed burns and stand-replacing wildfire events at the northern extent of limber pine's range may have limited seedling regeneration in the immediate post-fire period. Conservation efforts may be well-served by focusing on fire mitigation efforts, such as thinning and other fuel treatments, in areas surrounding established limber pine stands. Finally, post-disturbance stands could benefit from supplementary seedling plantings to achieve recovery plan restoration goals for this endangered species. © 2019 The Authors
关键词ConservationFiresReforestationSubstratesSurveysTexturesEndangered speciesFire ecologyLimber pinesPinus flexilisPrescribed firesSeedling regenerationEcologyAkaike information criterioncolonizationendangered speciesforest fireprescribed burningrecovery planregenerationseedling establishmentwildfireConservationFiresPinus FlexilisReforestationSubstratesSurveysAlbertaCanadaNucifraga columbianaPinus flexilis
语种英语
来源机构Forest Ecology and Management
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/133107
推荐引用方式
GB/T 7714
Dawe D.A.,Peters V.S.,Flannigan M.D.. Post-fire regeneration of endangered limber pine (Pinus flexilis) at the northern extent of its range[J]. Forest Ecology and Management,2020,457.
APA Dawe D.A.,Peters V.S.,&Flannigan M.D..(2020).Post-fire regeneration of endangered limber pine (Pinus flexilis) at the northern extent of its range.,457.
MLA Dawe D.A.,et al."Post-fire regeneration of endangered limber pine (Pinus flexilis) at the northern extent of its range".457(2020).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Dawe D.A.]的文章
[Peters V.S.]的文章
[Flannigan M.D.]的文章
百度学术
百度学术中相似的文章
[Dawe D.A.]的文章
[Peters V.S.]的文章
[Flannigan M.D.]的文章
必应学术
必应学术中相似的文章
[Dawe D.A.]的文章
[Peters V.S.]的文章
[Flannigan M.D.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。