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Toward a roadmap for diadromous fish conservation: the Big Five considerations
Verhelst, P.; Reubens, J.; Buysse, D.; Goethals, P.; Van Wichelen, J.; Moens, T. (2021). Toward a roadmap for diadromous fish conservation: the Big Five considerations. Front. Ecol. Environ. 19(7): 396-403. https://hdl.handle.net/10.1002/fee.2361
In: Frontiers in Ecology and the Environment. Ecological Society of America (ESA): Washington, DC. ISSN 1540-9295; e-ISSN 1540-9309
Peer reviewed article  

Available in  Authors 
    Vlaams Instituut voor de Zee: Non-open access 367759 [ request ]

Keyword
    Marine/Coastal

Authors  Top 
  • Verhelst, P.
  • Reubens, J.
  • Buysse, D.
  • Goethals, P.
  • Van Wichelen, J.
  • Moens, T.

Abstract
    Increasing habitat fragmentation is a major contributing factor to dramatic reductions in populations of migratory species worldwide. Diadromous fish species in particular are affected by this anthropogenic disturbance, resulting in historically low population abundances. Despite a plethora of management measures and considerable investment, desired results are often lacking. Here, we highlight five important considerations – the “Big Five” – for diadromous species management: removal of barriers to migration, installation of fish passages, habitat restoration, restocking, and fisheries management. We review current management measures and their effectiveness, and propose a way forward. Current management of diadromous fish populations largely focuses on mitigation of migration barriers, but management will likely fail if other fundamental aspects of diadromous species’ life cycles are overlooked or disregarded. We therefore propose an integrated management strategy that takes into account the five major factors influencing diadromous fish species, with the ultimate goal of restoring their populations.

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