Opening the floodgates for invasion-modelling the distribution dynamics of invasive alien fishes in India

被引:0
作者
Nobinraja, M. [1 ,2 ]
Aravind, N. A. [1 ,3 ]
Ravikanth, G. [1 ]
机构
[1] Ashoka Trust Res Ecol & Environm ATREE, SM Sehgal Fdn Ctr Biodivers & Conservat, Bengaluru 560064, India
[2] Manipal Acad Higher Educ MAHE, Manipal 576104, Karnataka, India
[3] Yenepoya Deemed Univ, Yenepoya Res Ctr, Univ Rd, Mangalore 575018, India
关键词
Biological invasion; River-linking; Invasive alien fishes; Niche modelling; Freshwater ecosystems; Management; SPECIES DISTRIBUTION MODELS; WESTERN-GHATS; NICHE SHIFT; PTERYGOPLICHTHYS-PARDALIS; POTENTIAL DISTRIBUTION; BIOLOGICAL INVASIONS; BIODIVERSITY HOTSPOT; NICOBAR ISLANDS; GANGA RIVER; COMMON CARP;
D O I
10.1007/s10661-023-12012-z
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Invasive alien species have become the second major threat to biodiversity affecting all three major ecosystems (terrestrial, marine, and freshwater). Increasing drivers such as habitat destruction, expanding horticulture and aquaculture industries, and global pet and food trade have created pathways for exotic species to be introduced leading to severe impacts on recipient ecosystems. Although relatively less studied than terrestrial ecosystems, freshwater ecosystems are highly susceptible to biological invasions. In India, there has been a noticeable increase in the introduction of alien fish species in freshwater environments. In the current study, we aimed to understand how climate change can affect the dynamics of the biological invasion of invasive alien fishes in India. We also evaluated the river-linking project's impact on the homogenization of biota in Indian freshwater bodies. We used species occurrence records with selected environmental variables to assess vulnerable locations for current and future biological invasion using species distribution models. Our study has identified and mapped the vulnerable regions to invasion in India. Our research indicates that the interlinking of rivers connects susceptible regions housing endangered fish species with invasive hotspots. Invasive alien fishes from the source basin may invade vulnerable basins and compete with the native species. Based on the results, we discuss some of the key areas for the management of these invasive alien species in the freshwater ecosystems.
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页数:21
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