| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1111/gcb.12919 |
| Temperature alone does not explain phenological variation of diverse temperate plants under experimental warming. | |
| Marchin RM; Salk CF; Hoffmann WA; Dunn RR | |
| 发表日期 | 2015 |
| 出处 | Global Change Biology 21 (8): 3138-3151 |
| 出版年 | 2015 |
| 语种 | 英语 |
| 摘要 | Anthropogenic climate change has altered temperate forest phenology, but how these trends will play out in the future is controversial. We measured the effect of experimental warming of 0.6-5.0 degrees C on the phenology of a diverse suite of 11 plant species in the deciduous forest understory (Duke Forest, North Carolina, USA) in a relatively warm year (2011) and a colder year (2013). Our primary goal was to dissect how temperature affects timing of spring budburst, flowering, and autumn leaf coloring for functional groups with different growth habits, phenological niches, and xylem anatomy. Warming advanced budburst of six deciduous woody species by 5-15 days and delayed leaf coloring by 18-21 days, resulting in an extension of the growing season by as much as 20-29 days. Spring temperature accumulation was strongly correlated with budburst date, but temperature alone cannot explain the diverse budburst responses observed among plant functional types. Ring-porous trees showed a consistent temperature response pattern across years, suggesting these species are sensitive to photoperiod. Conversely, diffuse-porous species responded differently between years, suggesting winter chilling may be more important in regulating budburst. Budburst of the ring-porous 'Quercus alba' responded nonlinearly to warming, suggesting evolutionary constraints may limit changes in phenology, and therefore productivity, in the future. Warming caused a divergence in flowering times among species in the forest community, resulting in a longer flowering season by 10-16 days. Temperature was a good predictor of flowering for only four of the seven species studied here. Observations of interannual temperature variability overpredicted flowering responses in spring-blooming species, relative to our warming experiment, and did not consistently predict even the direction of flowering shifts. Experiments that push temperatures beyond historic variation are indispensable for improving predictions of future changes in phenology. |
| 主题 | Ecosystems Services and Management (ESM) |
| 关键词 | budburst leaf senescence growing season length flowering phenology warming experiment climate change southeastern United States temperature sensitivity |
| URL | http://pure.iiasa.ac.at/id/eprint/11415/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/130340 |
| 推荐引用方式 GB/T 7714 | Marchin RM,Salk CF,Hoffmann WA,et al. Temperature alone does not explain phenological variation of diverse temperate plants under experimental warming.. 2015. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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