Files and links (1)
CC BY-NC-ND V4.0, Open Access
Journal article
Small-scale movement and migration cues of Australian bass (Percalates novemaculeata) in an urbanised river
Marine and Freshwater Research, Vol.73(6), pp.742-753
2022
Appears in Open Access via Read & Publish Agreements
Abstract
Urban river catchments are often severely affected by human activities but may still retain significant biodiversity. Surprisingly little is known about the behaviour of urban fishes, even those popular with anglers. Key environmental variables that trigger fish behaviour, such as river flow, are highly affected by instream structures including weirs and changes in the natural flow regime. Here, we used acoustic telemetry to examine the movements of Australian bass in a river located in suburban Sydney, Australia. We found that fish tended to be nocturnally active, however, small-scale movements were highly idiosyncratic and less associated with river flow than other factors. Larger-scale movements associated with spawning migrations were strongly correlated with winter floods. Half of the tagged fish migrated to the confluence of the river with Sydney Harbour to breed. Their return migration was hampered by a weir, but the provision of a new fish way facilitated successful return to freshwater at high tide. Despite occupying a highly affected, urban catchment fish behaviour showed similarity to those occupying more natural drainages. Our results highlight the importance of maintaining natural river flows in urban catchments and sustaining fish movement and migration capabilities through the installation of appropriate fish passage devices.
Details
- Title
- Small-scale movement and migration cues of Australian bass (Percalates novemaculeata) in an urbanised river
- Authors/Creators
- C. Brown (Author/Creator) - Macquarie UniversityE.E. Byrnes (Author/Creator) - Murdoch University
- Publication Details
- Marine and Freshwater Research, Vol.73(6), pp.742-753
- Publisher
- Commonwealth Scientific and Industrial Research Organization Publishing
- Identifiers
- 991005544837807891
- Copyright
- © 2022 The Authors.
- Murdoch Affiliation
- Harry Butler Institute; Centre for Sustainable Aquatic Ecosystems
- Language
- English
- Resource Type
- Journal article
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Metrics
144 File views/ downloads
41 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.2 Marine Biology
- 3.2.62 Freshwater Fish Ecology
- Web Of Science research areas
- Fisheries
- Limnology
- Marine & Freshwater Biology
- Oceanography
- ESI research areas
- Plant & Animal Science