Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.06.015 |
Population dynamics and the influence of blight on American chestnut at its northern range limit: Lessons for conservation | |
Van Drunen, Stephen G.1,2; Schutten, Kerry1,2; Bowen, Christine1,2; Boland, Greg J.1; Husband, Brian C.2 | |
2017-09-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
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ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 400 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Species of conservation concern may require special management consideration at their range limits where population vulnerability can be exaggerated by environmental stress. American chestnut, dramatically affected by chestnut blight in the early 1900s, has received extensive conservation attention especially in the central (U.S.) portion of its native range. However, relatively little is known about the population dynamics and the demographic effects of blight at the northern edge of its range, in Canada. Here we measure changes in tree size, reproduction, blight symptoms, and survival since a survey in 2001-02 and estimate the effect of chestnut blight on vital rates and population growth rates using a projection matrix model. Currently, chestnut trees in Canada range from <2 to 77.8 cm DBH. The incidence of reproductive trees (11%) decreased while frequency of blight (36%) and dieback (37%) increased since the 2001-02 survey. Mortality was 21.3% overall (41% for trees with blight) with few trees producing viable nuts or having established recruits (0.014 recruits per tree). Chestnut in Canada is in decline (lambda = 0.817), but tends to differ in blight incidence, tree size, and reproduction compared to surveys in the central part of the range. Efforts to elevate recruitment may be necessary to mitigate extirpation in the northern population. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Ctyphonectria parasitica Castanea dentata Geographic range Population viability Reproduction Mortality |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406732100037 |
WOS关键词 | ENDANGERED SPECIES ACT ; DENTATA MARSH BORKH ; CASTANEA-DENTATA ; ENDEMIC PLANT ; GROWTH-FORM ; FOREST ; RESTORATION ; DEMOGRAPHY ; RECOVERY ; SURVIVAL |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/22636 |
专题 | 气候变化 |
作者单位 | 1.Univ Guelph, Sch Environm Sci, 50 Stone Rd East, Guelph, ON N1G 2W1, Canada; 2.Univ Guelph, Dept Integrat Biol, 50 Stone Rd East, Guelph, ON N1G 2W1, Canada |
推荐引用方式 GB/T 7714 | Van Drunen, Stephen G.,Schutten, Kerry,Bowen, Christine,et al. Population dynamics and the influence of blight on American chestnut at its northern range limit: Lessons for conservation[J]. FOREST ECOLOGY AND MANAGEMENT,2017,400. |
APA | Van Drunen, Stephen G.,Schutten, Kerry,Bowen, Christine,Boland, Greg J.,&Husband, Brian C..(2017).Population dynamics and the influence of blight on American chestnut at its northern range limit: Lessons for conservation.FOREST ECOLOGY AND MANAGEMENT,400. |
MLA | Van Drunen, Stephen G.,et al."Population dynamics and the influence of blight on American chestnut at its northern range limit: Lessons for conservation".FOREST ECOLOGY AND MANAGEMENT 400(2017). |
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