Abstract
Conservation efforts globally are skewed toward terrestrial ecosystems. To date, conservation of aquatic ecosystems, in particular fish fauna, is largely neglected. We provide a country-wide assessment of Indian river ecosystems in order to identify and prioritize areas for protection and restoration of freshwater fish fauna. Using various biodiversity and anthropogenic attributes, coupled with tools of ecological modeling, we delineated areas for fish fauna conservation and restoration in the 20 major river basins of India. To do this, we used prioritization analyses and reserve selection algorithms to derive conservation value index (CVI) and vulnerability index (VI) of the river basins. CVI was estimated using endemicity, rarity, conservation value, and taxonomic singularity, while VI was estimated using a disturbance index derived from percent geographic area of the basin under human settlements, human population density, predominant land use, and total number of exotic fish species in each basin. The two indices, CVI and VI, were converted into geo-referenced maps, and each map was super-imposed onto species richness and forest cover maps, respectively. After superimposition, areas with high CVI and low VI shade intensities were delineated for conservation, while areas with high CVI and high VI shade intensities were demarcated for restoration. In view of the importance of freshwater fish for human livelihoods and consumption, and ecosystems of India’s rivers, we call for urgent attention to the conservation of their fish fauna along with restoration of their degraded habitats.
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Acknowledgments
The authors thank the editors and two anonymous reviewers for their constructive comments. JPB acknowledges the financial support of CISMHE for this study. MKP acknowledges the financial support of DU-DST-Purse grant sanctioned to him as Professor in Department of Environmental Studies, University of Delhi and Radcliffe Institute for Advanced Study, Harvard University for providing necessary facilities, and KM acknowledges the support of Department of Science & Technology INSPIRE Research Fellowship, Government of India.
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Bhatt, J.P., Manish, K., Mehta, R. et al. Assessing Potential Conservation and Restoration Areas of Freshwater Fish Fauna in the Indian River Basins. Environmental Management 57, 1098–1111 (2016). https://doi.org/10.1007/s00267-016-0670-x
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DOI: https://doi.org/10.1007/s00267-016-0670-x