Potential impacts of non-native fish on the threatened mahseer (Tor) species of the Indian Himalayan biodiversity hot spot
Gupta, Nishikant; Nautiyal, Prakash; Everard, Mark; Kochhar, Ishaan; Sivakumar, Kuppusamy; Johnson, Jeyaraj Antony; Borgohain, Atul
Mark Everard Mark.Everard@uwe.ac.uk
Associate Professor in Ecosystem Services
Jeyaraj Antony Johnson
1. Mahseer (Tor) fish species are critical components of locally adapted freshwater food webs across the Indian Himalayan biodiversity hotspot; however, multiple human stressors compounded by climate change have significantly depleted their populations over recent decades.
2. Mahseer species are now considered locally vulnerable or endangered in many regions. Hydropower projects in particular have fragmented populations, impairing genetic exchange, obstructing migratory paths, and changing the structure and functioning of riverine habitats, especially of formerly fast‐flowing rivers.
3. Worryingly, a literature survey and group discussions reveal that the increasing spread of non‐native fish species further compounds threats to mahseer and overall freshwater ecology. A better understanding of the current distribution, habitat requirement, and dispersal of non‐native fish is therefore essential to manage the growing threats to mahseer in the Indian Himalayan region.
|Journal Article Type||Article|
|Publication Date||Feb 1, 2020|
|Journal||Aquatic Conservation: Marine and Freshwater Ecosystems|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Gupta, N., Nautiyal, P., Everard, M., Kochhar, I., Sivakumar, K., Johnson, J. A., & Borgohain, A. (2020). Potential impacts of non-native fish on the threatened mahseer (Tor) species of the Indian Himalayan biodiversity hot spot. Aquatic Conservation: Marine and Freshwater Ecosystems, 30(2), 394-401. https://doi.org/10.1002/aqc.3275|
|Keywords||anthropogenic stressors; climate change; freshwater; Hindu Kush Himalaya, India; invasive species|
This file is under embargo until Jan 23, 2021 due to copyright reasons.
Contact Mark.Everard@uwe.ac.uk to request a copy for personal use.
You might also like
Can management of 'thirsty' alien trees improve water security in semi-arid India?