Dominance of Myriophyllum spicatum in submerged macrophyte communities associated with grass carp

Dominance of Myriophyllum spicatum in submerged macrophyte communities associated with grass carp
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狐尾藻在与草鱼相关的沉水植物群落中的优势

DOI:
10.1051/kmae/2016011
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发表时间:
2016
影响因子:
1.8
通讯作者:
Zhengwen Liu
Zhengwen Liu
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
Jinlei Yu;Wei Zhen;Baohua Guan;Ping Zhong;Erik Jeppesen;Zhengwen Liu

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重建水生植物群落是恢复富营养化浅水湖泊的关键。植物群落的物种组成在恢复期变化较快。2011年,通过生物模拟修复了秦湖(中国)的一个亚热带流域,包括去除鱼类,然后种植沉水植物。2011年9-12月,尖刺苦草和金鱼藻的优势地位向肉豆蔻优势转移。同时,单位努力渔获量(CPUE)显示草鱼的数量和生物量显著增加。稳定同位素分析表明,草鱼对刺尾草鱼和花尾草鱼有较好的嗜好。我们认为,草鱼的放牧是导致观察到的优势向金龟子转移的原因,但由于有可能有其他解释,需要通过对照实验进行进一步的测试,以得出确切的结论。
Re-establishment of macrophyte communities is a key to restore eutrophic shallow lakes. The species composition of the plant communities may change rapidly during the recovery period. A basin in subtropical Lake Qinhu (China) was restored by biomanipulation including fish removal followed by planting of submerged macrophytes in 2011. In September-December 2011, dominance of Vallisneria spinulosa and Ceratophyllum demersum shifted to dominance of Myriophyllum spicatum. Meanwhile, the CPUE (catch per unit effort) showed that the number and biomass of grass carp (Ctenopharyngodon idella ) demonstrated a marked increase. Stable isotope analyses revealed that grass carp preferred V. spinulosa and C. demersum to M. spicatum . We propose that grazing by grass carp was responsible for the observed shift in dominance towards M. spicatum but as alternative explanations are possible, further tests by controlled experiments are needed to draw firm conclusions.
DOI: 10.3724/sp.j.1142.2010.40453
发表时间: 2010
期刊: Journal of Wuhan Botanical Research
影响因子: --
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发表时间: 2011-09-01
期刊: FRESHWATER BIOLOGY
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DOI: 10.4319/lo.1996.41.4.0794
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