融雪时间改变了林下植物的物候特征,但不会改变春季短命植物的表现

IF 5.6 1区 环境科学与生态学 Q1 ECOLOGY
Nathan G. Kiel, David A. Watts, Amanda B. Young, Mark Vellend
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引用次数: 0

摘要

细尺度环境条件的时空变化会影响当地种群的丰度和生态群落的结构。在温带落叶林中,一些草本植物种类,包括一些春季蜉蝣植物,局部聚集在冠层树的基部周围。尽管这种模式很明显,但还没有进行实验测试来区分假设的机制。我们测试了在落叶树基部周围的年轮(“解冻圈”)中,是否通过提前的春季物候和更长的生长季节(从萌芽到衰老或冠层关闭之间的时间)来改善植物性能和增加当地丰度。将荷兰马尾(Dicentra cucullaria)这一常见的春季短生植物的个体移植到温带落叶林中进行全因子田间试验,以控制融雪时间(早与晚)和树木距离(近与远)。对春季物候和植株性能(峰值带叶茎丰度和总叶面积)进行了2年的跟踪研究。无论是在自然发生的解冻圈还是在实验中积雪被清除的地方,早春出苗期和早雪融化都使生长季节延长了10%-19%,这对于春花草本植物具有较短的活动窗口是有意义的延长。令人惊讶的是,即使考虑到融雪时间和茎的丰富程度,移植到树木附近的荷兰人的马裤也经历了生长季节的延长。然而,叶面积和茎丰度只有在靠近树木的情况下才会增加,融雪时间对这些方面的表现没有影响。合成。生长季节的长度与荷兰人的马裤的表现无关,早期的融雪可能不是导致这种春季落叶树根部附近的短暂草本植物更丰富的直接原因。相反,与树木接近有关的其他因素,包括土壤条件和小气候缓冲,可能在荷兰人马裤的当地分布中起主要作用。细尺度环境条件和资源可用性的实验操作将为理解快速全球变化时代的种群动态和群落结构提供越来越多的信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Snowmelt timing alters the phenology but not the performance of an understory spring ephemeral plant

Snowmelt timing alters the phenology but not the performance of an understory spring ephemeral plant

Snowmelt timing alters the phenology but not the performance of an understory spring ephemeral plant

Snowmelt timing alters the phenology but not the performance of an understory spring ephemeral plant

Snowmelt timing alters the phenology but not the performance of an understory spring ephemeral plant

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来源期刊
Journal of Ecology
Journal of Ecology 环境科学-生态学
CiteScore
10.90
自引率
5.50%
发文量
207
审稿时长
3.0 months
期刊介绍: Journal of Ecology publishes original research papers on all aspects of the ecology of plants (including algae), in both aquatic and terrestrial ecosystems. We do not publish papers concerned solely with cultivated plants and agricultural ecosystems. Studies of plant communities, populations or individual species are accepted, as well as studies of the interactions between plants and animals, fungi or bacteria, providing they focus on the ecology of the plants. We aim to bring important work using any ecological approach (including molecular techniques) to a wide international audience and therefore only publish papers with strong and ecological messages that advance our understanding of ecological principles.
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