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| DOI | 10.1111/ele.13676 |
| Fire frequency, state change and hysteresis in tallgrass prairie | |
| Collins S.L.; Nippert J.B.; Blair J.M.; Briggs J.M.; Blackmore P.; Ratajczak Z. | |
| 发表日期 | 2021 |
| ISSN | 1461023X |
| 起始页码 | 636 |
| 结束页码 | 647 |
| 卷号 | 24期号:4 |
| 英文摘要 | Hysteresis is a fundamental characteristic of alternative stable state theory, yet evidence of hysteresis is rare. In mesic grasslands, fire frequency regulates transition from grass- to shrub-dominated system states. It is uncertain, however, if increasing fire frequency can reverse shrub expansion, or if grass-shrub dynamics exhibit hysteresis. We implemented annual burning in two infrequently burned grasslands and ceased burning in two grasslands burned annually. With annual fires, grassland composition converged on that of long-term annually burned vegetation due to rapid recovery of grass cover, although shrubs persisted. When annual burning ceased, shrub cover increased, but community composition did not converge with a long-term infrequently burned reference site because of stochastic and lagged dispersal by shrubs, reflecting hysteresis. Our results demonstrated that annual burning can slow, but not reverse, shrub encroachment. In addition, reversing fire frequencies resulted in hysteresis because vegetation trajectories from grassland to shrubland differed from those of shrubland to grassland. © 2020 John Wiley & Sons Ltd |
| 关键词 | Alternative stable statesprescribed fireregime shiftresiliencewoody encroachment |
| 英文关键词 | ecosystem; fire; grassland; Poaceae; Ecosystem; Fires; Grassland; Poaceae |
| 语种 | 英语 |
| 来源期刊 | Ecology Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/204361 |
| 作者单位 | Department of Biology, University of New Mexico, Albuquerque, NM 87131, United States; Division of Biology, Kansas State University, Manhattan, KS 66506, United States |
| 推荐引用方式 GB/T 7714 | Collins S.L.,Nippert J.B.,Blair J.M.,et al. Fire frequency, state change and hysteresis in tallgrass prairie[J],2021,24(4). |
| APA | Collins S.L.,Nippert J.B.,Blair J.M.,Briggs J.M.,Blackmore P.,&Ratajczak Z..(2021).Fire frequency, state change and hysteresis in tallgrass prairie.Ecology Letters,24(4). |
| MLA | Collins S.L.,et al."Fire frequency, state change and hysteresis in tallgrass prairie".Ecology Letters 24.4(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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