Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15303 |
Heated rivalries: Phenological variation modifies competition for pollinators among arctic plants | |
Mikko Tiusanen; Tuomas Kankaanpä; ä; Niels M. Schmidt; Tomas Roslin | |
2020-09-11 | |
发表期刊 | Global Change Biology |
出版年 | 2020 |
英文摘要 | When plant species compete for pollinators, climate warming may cause directional change in flowering overlap, thereby shifting the strength of pollinator‐mediated plant–plant interactions. Such shifts are likely accentuated in the rapidly warming Arctic. Targeting a plant community in Northeast Greenland, we asked (a) whether the relative phenology of plants is shifting with spatial variation in temperature, (b) whether local plants compete for pollination, and (c) whether shifts in climatic conditions are likely to affect this competition. We first searched for climatic imprints on relative species phenology along an elevational gradient. We then tested for signs of competition with increasing flower densities: reduced pollinator visits, reduced representation of plant species in pollen loads, and reduced seed production. Finally, we evaluated how climate change may affect this competition. Compared to a dominant species, Dryas integrifolia × octopetala, the relative timing of other species shifted along the environmental gradient, with Silene acaulis and Papaver radicatum flowering earlier toward higher elevation. This shift resulted in larger niche overlap, allowing for an increased potential for competition for pollination. Meanwhile, Dryas emerged as a superior competitor by attracting 97.2% of flower visits. Higher Dryas density resulted in reduced insect visits and less pollen of S. acaulis being carried by pollinators, causing reduced seed set by S. acaulis. Our results show that current variation in climate shifts the timing and flowering overlap between dominant and less‐competitive plant species. With climate warming, such shifts in phenology within trophic levels may ultimately affect interactions between them, changing the strength of competition among plants. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
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/293952 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Mikko Tiusanen,Tuomas Kankaanpä,ä,et al. Heated rivalries: Phenological variation modifies competition for pollinators among arctic plants[J]. Global Change Biology,2020. |
APA | Mikko Tiusanen,Tuomas Kankaanpä,ä,Niels M. Schmidt,&Tomas Roslin.(2020).Heated rivalries: Phenological variation modifies competition for pollinators among arctic plants.Global Change Biology. |
MLA | Mikko Tiusanen,et al."Heated rivalries: Phenological variation modifies competition for pollinators among arctic plants".Global Change Biology (2020). |
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