Evenness alters the positive effect of species richness on community drought resistance via changing complementarity
Evenness alters the positive effect of species richness on community drought resistance via changing complementarity
复制标题
均匀度通过改变互补性改变物种丰富度对群落抗旱性的积极影响
DOI：
10.1016/j.ecolind.2021.108464
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发表时间：
2021-12
影响因子：
6.9
通讯作者：
Yu Feihai
中科院分区：
文献类型：
--
作者：
Wang Xiaoyan;Ge Yuan;Gao Song;Chen Tong;Wang Jiang;Yu Feihai
生物多样性的丧失可能会降低生态系统对干扰的抵抗力。虽然许多研究已经测试了物种丰富度对群落抗干扰能力的影响，但很少考虑物种均匀度的作用。我们研究了物种均匀度是否影响物种丰富度和植物群落抗旱性之间的关系。我们构建了四个层次的物种丰富度（1，2-，4-和8-种）和三个层次的物种均匀度（高，中，低）的实验植物群落，并进行了两个干旱处理（与没有干旱）。物种均匀度显著提高了群落的抗旱性，并具有互补效应。物种丰富度与植物群落的抗旱性在高均匀度和中等均匀度下呈正相关，而在低均匀度下则不相关。这一结果很好地符合这样一个事实，即在高和中等均匀度，而不是在低均匀度的物种丰富度的互补效应增加。然而，无论是物种均匀度和物种丰富度显着影响选择效果的抗旱性的社区。我们的结论是，物种均匀度可以改变物种丰富度和抗干扰能力之间的关系（例如，干旱）在植物群落中通过增强物种之间的互补性。因此，除了物种丰富度之外，均匀度也应该被视为社区抵抗未来全球变化的重要指标，例如干旱强度和频率的增加。
Biodiversity loss may decrease the resistance of ecosystems to disturbance. While many studies have tested the effects of species richness on the ability of communities to resist disturbance, few have considered the role of species evenness. We examined whether species evenness affects the relationship between species richness and the drought resistance of plant communities. We constructed experimental plant communities with four levels of species richness (1, 2-, 4- and 8-species) and three levels of species evenness (high, medium and low) and subjected them to two drought treatments (with vs. without drought). Species evenness significantly increased the drought resistance of the communities and also complementarity effects. Moreover, a positive relationship between species richness and the drought resistance of plant communities was found at high and medium evenness but not at low evenness. This result corresponded well with the fact that complementarity effects increased with species richness at high and medium evenness but not at low evenness. However, neither species evenness nor species richness significantly affected selection effects for the drought resistance of the communities. We conclude that species evenness can alter the relationships between species richness and the resistance to disturbance (e.g., drought) in plant communities by enhanced complementarity among species. Thus, in addition to species richness, evenness should also be considered an important indicator of the community resistance to future global changes, such as increased drought intensity and frequency.
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影响因子：
4.9
作者：
À. Ribas;R. Llurba;F. Gouriveau;N. Altimir;John Connolly;M. Sebastià
通讯作者：
À. Ribas;R. Llurba;F. Gouriveau;N. Altimir;John Connolly;M. Sebastià
干旱后的草原耐药性和韧性取决于管理强度和物种丰富度。
影响因子：
3.7
作者：
Vogel A;Scherer-Lorenzen M;Weigelt A
通讯作者：
Weigelt A
影响因子：
8.8
作者：
Yongfan Wang;Shixiao Yu;Jiang-Hai Wang
通讯作者：
Yongfan Wang;Shixiao Yu;Jiang-Hai Wang
影响因子：
2.8
作者：
Natalia Rodriguez‐Ramirez;M. Santonja;V. Baldy;C. Ballini;N. Montes
通讯作者：
Natalia Rodriguez‐Ramirez;M. Santonja;V. Baldy;C. Ballini;N. Montes
影响因子：
8.8
作者：
de Mazancourt, Claire;Isbell, Forest;Loreau, Michel
通讯作者：
Loreau, Michel