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Breaking down barriers to fish passage


Watson, JR and Goodrich, HR and Cramp, RL and Gordos, MA and Franklin, CE, Breaking down barriers to fish passage, Science for Saving Species: Research findings factsheet, Threatened Species Recovery Hub, Australia, Project 3.3.7 (2019) [Government or Industry Research]

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Freshwater ecosystems are one of the habitats most threatened by human activity. The fish that inhabit these diverse freshwater ecosystems are a direct resource for humans, but their role in maintaining the health, functionality and ecosystem robustness is often ignored. In the Murray-Darling Basin, native fish are estimated to have declined to just 10% of pre-European levels. A major cause of fish population declines, and the cascading losses of freshwater biodiversity, is habitat fragmentation. This fragmentation is caused by artificial instream barriers such as dams, weirs and culverts (the pipes that carry water under roads, railways and embankments). There are over 5000 such physical barriers in New South Wales alone. These barriers prevent fish from migrating, accessing habitat and escaping predators. We have developed and tested a new culvert remediation design that significantly improves the performance of juvenile and small-bodied Australian fish species in high-velocity water flows.

Item Details

Item Type:Government or Industry Research
Keywords:fish passage, threatened species, anthropogenic change
Research Division:Environmental Sciences
Research Group:Environmental management
Research Field:Conservation and biodiversity
Objective Division:Environmental Management
Objective Group:Fresh, ground and surface water systems and management
Objective Field:Rehabilitation or conservation of fresh, ground and surface water environments
UTAS Author:Goodrich, HR (Dr Harriet Goodrich)
ID Code:152129
Year Published:2019
Deposited By:Fisheries and Aquaculture
Deposited On:2022-08-11
Last Modified:2022-08-24

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