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Afterword

Published online by Cambridge University Press:  16 June 2020

David Dudgeon
Affiliation:
The University of Hong Kong
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Summary

Fresh waters are not amenable to protection by fortress conservation, since entire drainage basins can seldom be set aside. Site selection by conservation modelling has shortcomings because of the directional connectivity of river ecosystems. In the many cases where habitat degradation is the primary threat to freshwater biodiversity, restoration measures (that include riparia) may ameliorate matters, allowing species persistence or even recovery. However, rehabilitation is often the best that can be achieved. Mitigation of the barrier effects of dams by fishways have limited effectiveness, but complete removal of dams is an effective means of restoring connectivity. Ex situ (captive breeding, reintroduction, translocation) and in situ conservation measures – sometimes in combination – have been applied to a variety of freshwater animals, using new techniques such as eDNA for monitoring. Various international networks have been established recently to facilitate collaboration on conservation and improve data collection and sharing. There are thus reasons to be hopeful – rather than optimistic – about the prospects for preserving freshwater biodiversity in a warming world.

Type
Chapter
Information
Freshwater Biodiversity
Status, Threats and Conservation
, pp. 399 - 404
Publisher: Cambridge University Press
Print publication year: 2020

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  • Afterword
  • David Dudgeon, The University of Hong Kong
  • Book: Freshwater Biodiversity
  • Online publication: 16 June 2020
  • Chapter DOI: https://doi.org/10.1017/9781139032759.010
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  • Afterword
  • David Dudgeon, The University of Hong Kong
  • Book: Freshwater Biodiversity
  • Online publication: 16 June 2020
  • Chapter DOI: https://doi.org/10.1017/9781139032759.010
Available formats
×

Send book to Google Drive

To send content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about sending content to Google Drive.

  • Afterword
  • David Dudgeon, The University of Hong Kong
  • Book: Freshwater Biodiversity
  • Online publication: 16 June 2020
  • Chapter DOI: https://doi.org/10.1017/9781139032759.010
Available formats
×