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Ecological Effect Evaluation of Artificial Reefs Based on Spatial Heterogeneity of Demersal Nekton Community in Beibu Gulf

文献类型： 外文期刊

作者： Zeng, Lei 1 ; Chen, Pimao 1 ; Tang, Zhenzhao 1 ; Yu, Jie 1 ; Chen, Guobao 1 ;

作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China

2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 510300, Peoples R China

3.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Sci Observing & Expt Stn South China Sea Fishery R, Minist Agr, Guangzhou 510300, Peoples R China

4.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab Marine Ranch Technol, Guangzhou 510300, Peoples R China

关键词： Artificial reef; Biodiversity evaluation; Density assessment; Nekton community; Spatial heterogeneity

期刊名称：PAKISTAN JOURNAL OF ZOOLOGY （ 影响因子：0.6； 五年影响因子：0.7 ）

ISSN： 0030-9923

年卷期： 2023 年 55 卷 2 期

页码：

收录情况： SCI

摘要： To explore the ecological effects of artificial reef (AR), multidimensional evaluations involving density, biodiversity and spatial heterogeneity of nekton community were studied in Beibu Gulf China. The spatial pattern of nekton community was clearly classified into two groups (A and B) in April 2017. However, the variation of nekton densities between A (48529 ind/km(2)) and B (30220 ind/km(2)) was not significant (P= 0.17). Therefore, the ecological effects evaluation of AR merely based on density assessment is not sensitive enough. Shannon-Wiener diversity (H') and Pielou evenness (J') in group A (2.74 and 0.78) were significantly higher than that in group B (2.3 and 0.7), implying an obvious ecological restoration effect of AR. Furthermore, crustaceans such as Alpheus brevicristatus, Charybdis callianassa and Harpiosquilla harpax, showing a distinct preference tropism to AR, were turned out to be the main factors contributing to the spatial heterogenity of nekton community between A and B, which was closely related to dissolved oxygen (DO), water transparency (Tra) and total inorganic nitrogen (TIN). The findings in this paper are significant for the protection and restoration of crustaceans resourcs along coastal water, given the rapid establish of AR around the world.

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