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Advances in the aquatic sciences
RESEARCH ARTICLE

Policy changes in dam construction and biodiversity conservation in the Yangtze River Basin, China

Hongzhang Xu https://orcid.org/0000-0001-8904-2976 A B and Jamie Pittock A
+ Author Affiliations
- Author Affiliations

A Fenner School of Environment and Society, Building 48, 48 Linnaeus Way, The Australian National University, Acton, ACT 2601, Australia.

B Corresponding author. Email: hongzhang.xu@anu.edu.au

Marine and Freshwater Research 72(2) 228-243 https://doi.org/10.1071/MF20011
Submitted: 10 January 2020  Accepted: 25 May 2020   Published: 22 June 2020

Abstract

Damming rivers addresses a range of society’s needs, but at the cost of fragmentation and other negative effects on freshwater ecosystems. This article examines hydropower development and fish conservation in the Upper Yangtze River Basin to explore strategies for managing dams more sustainably at the basin scale. We highlight the need to limit the effects of hydropower dams on freshwater biodiversity, and that protecting fish in reserves could be one of the most effective approaches to limiting the ecological effects of dams on fish. However, in the Yangtze River basin there are dams on the rivers in all but 1 of the 14 fish reserves mapped in this study, thus compromising the effectiveness of the reserves. In addition, the removal of some dams may not be as effective as suggested. Thus, we propose that limiting dam construction in protected tributaries is a ready-to-adopt conservation strategy. However, the adoption of this policy by the Chinese government will be determined by which of two competing policy changes (i.e. gradual or sudden) in the policy subsystem of dam construction will prevail. In this paper we illustrate how greater triage in the Upper Yangtze River Basin can deliver services to people and conserve freshwater biodiversity.

Additional keywords: advocacy coalition framework (ACF), fish, hydropower development, policy change, trade-offs.


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