A5100599969- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Fish biology, ecology, and behavior
- Hydrology and Sediment Transport Processes
- Aquatic Invertebrate Ecology and Behavior
- Soil and Water Nutrient Dynamics
- Avian ecology and behavior
- Marine and fisheries research
- Ecology and biodiversity studies
- International Maritime Law Issues
- Water Quality and Resources Studies
- Hydropower, Displacement, Environmental Impact
- Water Quality Monitoring Technologies
- Wildlife-Road Interactions and Conservation
- Maritime and Coastal Archaeology
- Water Quality and Pollution Assessment
Arthur Rylah Institute for Environmental Research
2006-2024
Summary Construction of instream barriers, preventing fish from accessing spawning, nursery and feeding habitat, is a major issue impacting fisheries sustainability throughout the world. Since European settlement, development in Murray‐Darling Basin for irrigation potable water supplies has led to construction over 10,000 barriers movement. The Native Fish Strategy listed passage as driving action was proactive progressing cost‐effective solutions help inform large‐scale rehabilitation...
Non-native common carp (Cyprinus carpio L.) are the most abundant large-bodied fish in Murray–Darling Basin. The abundance of larvae and young-of-the-year appears to increase after flooding, although relative contribution floodplain habitats compared riverine areas remains unresolved. Larval nets were used monthly from September 2000 January 2001 identify spawning recruitment regulated Murray River around Barmah–Millewa forest. Five non-native five native species comprising 136 111...
Abstract – Common carp ( Cyprinus carpio L.) are a major freshwater invader and knowledge of their movements is important for planning control efforts. To investigate the movement patterns common carp, radio‐tags were implanted into 46 adult fish; 37 near large floodplain wetland, Barmah‐Millewa forest, 9 in Murray River approximately 175 km upstream. Tagged fish located every second week between August 1999 March 2001. occupied total linear ranges (TLR) 0.4 238 (mean 30 ± 61 km), with 25...
Abstract Introduced common carp, Cyprinus carpio L., is the most abundant large fish in Murray‐Darling Basin and past studies have considered it non‐migratory. Movement information is, however, important for targeting control efforts to appropriate habitats spatial scales. patterns of carp Murray River were investigated between November 1999 August 2001. In total, 3337 boat electric fished externally tagged. Of 293 (8.8%) recaptured, up 1898 days later, majority (80%) moved <5 km....
Abstract – Native Murray cod ( Maccullochella peelii ) are listed as a nationally vulnerable species, whereas non‐native common carp Cyprinus carpio widespread and abundant. Understanding key aspects of life history, such movement patterns habitat selection by juvenile carp, might be useful for conserving populations controlling numbers. We used radio‐telemetry to track eight seven in the River, Australia, between March July 2001. Common occupied significantly greater total linear range...
Abstract Loss of river‐floodplain (lateral) connectivity has impacted on fish communities and fisheries around the world. However, evidence impacts reduced lateral Australian native remains scant. To document these impacts, isolated pools located immediately downstream two major regulators (or weirs) that control flows from Murray River to an extensive off‐stream floodplain, were pumped out five times between 2001 2006. A total 20 980 (16 228 native, 4752 non‐native) comprising 15 species...
Abstract The construction of fishways for upstream and downstream connectivity is the preferred mitigation measure hydropower dams other riverine barriers. Yet empirical evidence effective design criteria many species missing. We therefore assembled a group international fishway designers combined their knowledge with available data using formal expert elicitation protocol Bayesian networks. method we use minimizes biases typically associated such approaches. Demonstrating our application...
Abstract Culverts reduce connectivity for aquatic animals by being both a hydraulic and physical barrier. However, altered light intensity may also be behavioural barrier to fish movement, especially diurnal species that have adapted moving when it is light. We propose knowledge of optical physiology behaviour, two important mechanisms underpinning can inform efforts improve movement through culverts. firstly review the sensory systems with reference visual sense explore how this affects...
Abstract Inadequately designed culverts can be physical barriers to fish passage if they increase the velocity of water flow in environment, alter natural turbulence patterns or fail provide adequate depth. They may also act as behavioural affect willingness species enter pass through structure due altered ambient light conditions. To understand how reduced intensity might behaviour culverts, authors performed a choice experiment quantifying amount time individual spent dark and illuminated...
Abstract Light intensity within a vertical‐slot fishway was manipulated to determine the effect on fish movement. Three treatments (darkness, low light, artificial light) were tested with natural daylight used as control. varied from 0 1,692 lux for three and 1 4,550 outside ranged 31 80 900 lux. A total of 64 385 collected six species. The abundance Australian smelt R etropinna semoni (Webber), unspecked hardyhead C raterocephalus stercusmuscarum fulvus Ivantsoff, Crowley Allen, bony...
This study aimed to ascertain the influence of turbidity and migration rate on count accuracy size determination an automatic infrared fish counter. The effect enumerating silver perch (Bidyanus bidyanus) rates was insignificant when compared inability counter deal with large numbers migrating fish. underestimated counts by 56–84% at moderate (12 h−1) 62–82% highest (120 h−1). When multiple were simultaneously passed through counter, software detected them as a single overestimated length....
Summary Environmental rehabilitation budgets are often limited, and management actions need to be prioritised achieve the best outcomes. Prioritisation can done when evidence informs decision‐making process. We acoustically tagged twenty Golden Perch ( M acquaria ambigua ) in Loddon River, Australia, tracked their movements gain an understanding on requirements for fish passage at a major regulating structure, Box Creek regulator. The of these were monitored through network receivers located...
Abstract Inadequately designed culverts are known to pose hydraulic barriers fish passage, but they may also be behavioural if adversely affect light levels within them. To test this, we performed a choice experiment and quantified the amount of time individuals four Australian species spent in darkened illuminated areas an experimental swimming fume. Behavioural responses were reflective species’ diel activity patterns; diurnal preferred regions, while nocturnal region. We then determined...