Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14393 |
Altered fire regimes cause long-term lichen diversity losses | |
Miller, Jesse E. D.1; Root, Heather T.2; Safford, Hugh D.1,3 | |
2018-10-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:10页码:4909-4918 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Many global ecosystems have undergone shifts in fire regimes in recent decades, such as changes in fire size, frequency, and/or severity. Recent research shows that increases in fire size, frequency, and severity can lead to long-persisting deforestation, but the consequences of shifting fire regimes for biodiversity of other vegetative organisms (such as understory plants, fungi, and lichens) remain poorly understood. Understanding lichen responses to wildfire is particularly important because lichens play crucial roles in nutrient cycling and supporting wildlife in many ecosystems. Lichen responses to fire have been little studied, and most previous research has been limited to small geographic areas (e.g. studies of a single fire), making it difficult to establish generalizable patterns. To investigate long-term effects of fire severity on lichen communities, we sampled epiphytic lichen communities in 104 study plots across California's greater Sierra Nevada region in areas that burned in five wildfires, ranging from 4 to 16years prior to sampling. The conifer forest ecosystems we studied have undergone a notable increase in fire severity in recent decades, and we sample across the full gradient of fire severity to infer how shifting fire regimes may influence landscape-level biodiversity. We find that low-severity fire has little to no effect on lichen communities. Areas that burned at moderate and high severities, however, have significantly and progressively lower lichen richness and abundance. Importantly, we observe very little postfire lichen recolonization on burned substrates even more than 15years after fire. Our multivariate model suggests that the hotter, drier microclimates that occur after fire removes forest canopies may prevent lichen reestablishment, meaning that lichens are not likely to recolonize until mature trees regenerate. These findings suggest that altered fire regimes may cause broad and long-persisting landscape-scale biodiversity losses that could ultimately impact multiple trophic levels. |
英文关键词 | climate change cryptic degradation deforestation disturbance dry forests epiphytes interval squeeze regime shifts |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445728800034 |
WOS关键词 | CALIFORNIA YELLOW PINE ; ARBOREAL FORAGE LICHEN ; MIXED-CONIFER FORESTS ; OLD-GROWTH FORESTS ; CLIMATE-CHANGE ; EPIPHYTIC LICHENS ; WESTERN OREGON ; SIERRA-NEVADA ; COMMUNITIES ; LANDSCAPE |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
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/17062 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Calif Davis, Dept Environm Sci & Policy, Davis, CA 95616 USA; 2.Weber State Univ, Bot Dept, Ogden, UT 84408 USA; 3.US Forest Serv, USDA, Pacific Southwest Reg, Vallejo, CA USA |
推荐引用方式 GB/T 7714 | Miller, Jesse E. D.,Root, Heather T.,Safford, Hugh D.. Altered fire regimes cause long-term lichen diversity losses[J]. GLOBAL CHANGE BIOLOGY,2018,24(10):4909-4918. |
APA | Miller, Jesse E. D.,Root, Heather T.,&Safford, Hugh D..(2018).Altered fire regimes cause long-term lichen diversity losses.GLOBAL CHANGE BIOLOGY,24(10),4909-4918. |
MLA | Miller, Jesse E. D.,et al."Altered fire regimes cause long-term lichen diversity losses".GLOBAL CHANGE BIOLOGY 24.10(2018):4909-4918. |
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