Periphytic algae mediate interactions between neighbor and target submerged macrophytes along a nutrient gradient
Periphytic algae mediate interactions between neighbor and target submerged macrophytes along a nutrient gradient
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附生藻类沿着营养梯度介导邻近和目标沉水植物之间的相互作用
DOI：
10.1016/j.ecolind.2019.105898
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发表时间：
2020-03
影响因子：
6.9
通讯作者：
Xing Wei
中科院分区：
文献类型：
--
作者：
Hao Beibei;Wu Haoping;Li Wei;Xing Wei
植物间的相互作用会沿着环境压力的变化而在竞争和促进之间转换，这在陆地生态系统中已经得到了广泛的证实。在富营养化的水生态系统中，恢复沉水植物已被公认为是生态恢复过程中的关键措施。然而，在淡水生态系统中，沿着营养盐梯度沉水植物的邻种与目标种之间的相互作用却知之甚少。在此基础上，采用析因实验研究了在5种营养水平下，3种目标植物（抱叶眼子菜、狐尾藻和苦草）对相邻植物（马来眼子菜）存在/不存在的反应。结果表明，相邻种对P. perfoliatus，而对M. spicatumandV. natans（分别为阴性和中性）。沿着实验养分梯度，邻体效应由易化效应向竞争效应转变，但未发现明显的易化效应。强烈的负面邻里效应被发现在高营养水平，由于较高的附着生物量。多元回归分析表明，邻体效应受目标种附着生物的影响显著，并在很大程度上解释了邻体效应。总体而言，我们的研究结果表明，附着生物可能是介导富营养化淡水生态系统中沉水植物恢复的邻近影响的潜在因素。
Interactions between plants will shift between competition and facilitation along environmental stresses, which has already been widely demonstrated in terrestrial ecosystems. Reestablishment of submerged macrophytes in eutrophic aquatic ecosystems has been recognized as a pivotal measure in the process of ecological restoration. However, little is known about the interactions between neighbor species and target species of submerged macrophytes along a nutrient gradient in freshwater ecosystems. Here, we carried out a mesocosm factorial experiment to investigate the responses of three target species (Potamogeton perfoliatus,Myriophyllum spicatumandVallisneria natans) to the presence/absence of neighbor species (Potamogeton malaianus) under five nutrient levels. Results showed that the neighbor species has a strong negative effect on the performance ofP. perfoliatus, whereas has weak effects on the performances ofM. spicatumandV. natans(negative and neutral, respectively). Along the experimental nutrient gradient, the neighborhood effects shifted from facilitation to competition, whereas no significant facilitative effects were found in the study. Strong negative neighborhood effects were found in high nutrient levels due to the higher periphyton biomass. Multiple regression analysis suggested that the neighborhood effects are significantly affected and largely explained by the periphyton attached on target species. Overall, our results suggested that periphyton may be a potential factor mediating the neighborhood effects on restoration of submerged macrophytes in eutrophic freshwater ecosystems.
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DOI：
10.1111/j.1469-8137.2010.03543.x
发表时间：
2011-03
期刊：
The New phytologist
影响因子：
--
作者：
S. Lambert;A. Davy
通讯作者：
S. Lambert;A. Davy
影响因子：
6.9
作者：
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通讯作者：
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影响因子：
0.9
作者：
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通讯作者：
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影响因子：
2.6
作者：
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通讯作者：
B. Guan;Xu Wang;Chunyu Yin;Zhengwen Liu;Zhaoxia Wang;Yiming Gao
影响因子：
5.5
作者：
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通讯作者：
Y. Bagousse-Pinguet;P. Liancourt;N. Gross;D. Straile