Are the fish of the upper and lower Mekong interconnected?

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Are the fish of the upper and lower Mekong interconnected?

Updated：2023-05-16

- Are the fish of the upper and lower Mekong interconnected?
- Journal of Oceanology and Limnology Vol. 27, Issue 2, Pages: 400-407(2009)
- Affiliations：
  
  Asian International Rivers Center Yunnan University
- Author bio：
- Funds：
- DOI：10.1007/s00343-009-9132-0
  CLC：
- Online First：12 July 2009，
  
  Published：2009
- Accepted：
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Kang, B., Perrett, L., Li, Y. et al. Are the fish of the upper and lower Mekong interconnected?., Chin. J. Ocean. Limnol. 27, 400–407 (2009). https://doi.org/10.1007/s00343-009-9132-0
DOI：

Kang, B., Perrett, L., Li, Y. et al. Are the fish of the upper and lower Mekong interconnected?., Chin. J. Ocean. Limnol. 27, 400–407 (2009). https://doi.org/10.1007/s00343-009-9132-0 DOI：

摘要

Abstract

The Mekong supports one of the richest inland fisheries in the world

with many of the fish migrating long distance to spawn. Little is known about the fisheries and migration strategies of the Upper Mekong whilst it is supposed that many fish species move between the Lower and Upper Mekong. Most likely

natural fish migration in the river has been altered by dam construction across the mainstream of the Upper Mekong. In this paper

the interconnectivity of fish species between different sections of the Mekong and negative impacts of dams on migratory fish are studied. Of the 162 fish species in the Upper Mekong and the 869 species in the Lower Mekong

61 species are common. Results show that there is no significant difference at order level between the UM and LM. Similarity coefficients are used to evaluate interconnectivity at species

genus and family levels among four different sections of the Upper Mekong with each other and with the Lower Mekong as a whole. The highest similarity is found between the middle and lower reach of the Upper Mekong at species and genus levels and the middle and upper reach at family level. Of the eight cascade dams

Mengsong Dam in planning is considered as the biggest threat to migratory fish from the Lower Mekong and should be particularly concerned.

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references

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