Larva fish assemblage structure in three-dimensional floating wetlands and non-floating wetlands in the Changjiang River estuary
文献类型： 外文期刊
作者： Huang, Xiaofeng 1 ; Zhao, Feng 3 ; Song, Chao 3 ; Chai, Yi 1 ; Wang, Qian 1 ; Zhuang, Ping 3 ;
作者机构： 1.Yangtze Univ, Coll Anim Sci, Jingzhou 434025, Peoples R China
2.Yangtze Univ, Engn Res Ctr Ecol & Agr Use Wetland, Minist Educ, Jingzhou 434020, Peoples R China
3.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China
关键词： habitat rehabilitation; larvae fish; biodiversity conservation; artificial floating wetland; Changjiang (Yangtze) River estuary
期刊名称：JOURNAL OF OCEANOLOGY AND LIMNOLOGY （ 影响因子：1.265； 五年影响因子：1.276 ）
ISSN： 2096-5508
年卷期：
页码：
收录情况： SCI
摘要： Fish populations have declined in many estuarine and freshwater ecosystems in part due to the loss of habitat in recent decades. Reconstructing lost habitat for larvae fish is a potential method for recovering larvae fish populations. Three-dimensional artificial floating wetlands (AFWs) on which Phragmites australis was planted were experimentally deployed to recover the lost habitat in the Changjiang (Yangtze) River estuary from May to July 2018. The AFW area was characterized by slow velocity, high transparency, low dissolved oxygen, and relatively constant water temperature. The total individuals of larvae fish in the AFW area (12 122 in total) was higher than that in the non-AFW area (1 250 in total), and the densities of most larvae fish species were higher in the AFW habitat than in the non-AFW area. The distributions of larvae fish species were positively influenced by habitat type because they were strongly related to the negative part of the first axis of the redundancy analysis, and Cyprinus carpio and Cyprinus auratus were inclined to habitat in the slow velocity and high transparency AFW habitat area. These results indicate that larvae fish species are inclined to inhabit the AFW habitat. The use of three-dimensional P. australis AFWs would be a potential method for enhancing the habitat of larvae fish in the degraded habitats along the estuary.
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