Effects of water level fluctuation on the growth of submerged macrophyte communities
Effects of water level fluctuation on the growth of submerged macrophyte communities
复制标题
水位波动对沉水植物群落生长的影响
DOI：
10.1016/j.flora.2016.05.005
复制
发表时间：
2016-08-01
期刊：
影响因子：
1.9
通讯作者：
Yu, Fei-Hai
中科院分区：
文献类型：
--
作者：
Wang, Pu;Zhang, Qian;Yu, Fei-Hai
水生植物群落经常受到水位波动的影响。虽然许多实验研究已经检验了水位波动对单个水生植物物种生长的影响，但很少有研究对水生植物群落进行测试。我们构建了由四种沉水植物（眼子菜、狐尾藻、脆弱轮藻和金鱼藻）组成的水生群落，并将它们置于三个静态水深（30、90和150厘米）和三个低、中、高频水位波动（30厘米至150之间的水深变化的2个、4个和8个周期）。 厘米）。三种波动处理的水深平均为 90 厘米，与 90 厘米的静态水深相当。水深的增加显着降低了群落的生物量、芽节数量和芽长度的生长，因为它减少了大多数物种（P. perfoliatus、M. spicatum 和 C. fragilis）的生长。与静止水深90 cm相比，水位波动增加了群落的芽节数和芽长，而波动频率影响不大。我们的结论是，水位波动可能会增加沉水植物群落的植被传播，管理水位波动可能有助于恢复退化湿地的沉水植物群落。 (C) 2016 爱思唯尔有限公司。版权所有。
Aquatic plant communities are frequently subjected to water level fluctuation. While many experimental studies have examined effects of water level fluctuation on the growth of individual aquatic plant species, very few have tested those on aquatic plant communities. We constructed aquatic communities consisting of four submerged macrophytes (Potamogeton perfoliatus, Myriophyllum spicatum, Chara fragilis and Ceratophyllum demersum), and subjected them to three static water depths (30, 90 and 150 cm) and three water level fluctuations with low, medium and high frequency (two, four and eight cycles of water depth change between 30 cm to 150 cm). Water depth in each of the three fluctuation treatments was on average 90 cm, which was comparable to the static water depth of 90 cm. Increasing water depth significantly decreased the growth of the communities in terms of biomass, number of shoot nodes and shoot length because it decreased the growth of most species (P. perfoliatus, M. spicatum and C. fragilis). Compared to the static water depth of 90 cm, water level fluctuation increased number of shoot nodes and shoot length of the communities, whereas fluctuation frequency had little impact. We conclude that water level fluctuation may potentially increase the vegetative spread of submerged macrophyte communities and managing water level fluctuation may be helpful for the restoration of submerged macrophyte communities in degraded wetlands. (C) 2016 Elsevier GmbH. All rights reserved.