NSW Department of Primary Industries

You searched for `abundance and identification of marine protected areas`

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  1. Ageing Yellowtail (Trachurus novaezelandiae) and Blue Mackeral (Scomber australasicus) in New South Wales

    Phillips) • Meeting with D. Liska of Pisces Marine (operators of Broome’s Head hatchery). ... The approach to selection for disease tolerance is largely a reaction to the existence of survivors in areas affected by disease.

  2. Major Fish Kills in the Northern Rivers of NSW in 2001: Causes, Impacts & Responses

    well below the critical thresholds for many fish species (generally set at 4 mg/L) and commonly below 1 mg/L in large areas of all three river systems. ... The review enabled a time-line of the main processes to be constructed and presentation of

  3. Murray Wetlands Management and Water Recovery Initiatives: Rapid assessment of fisheries values of wetlands priorities for water recovery

    The presence and relative abundance of juveniles of most of the other ten species collected is suggestive that wetlands may be important recruitment areas. ... Few rocky habitats were available (other than areas of bedrock in Back Creek and Big Barren

  4. PRE/POST CHAPTER HEADING

    Logbooks may provide a cost-effective method for assessing (i) recruitment in terms of the abundance of undersized kingfish, and (ii) any changes in the mean sizes of kingfish landed. ... Fisher logbooks may be the most cost-effective way to monitor

  5. Fish communities of the Murrumbidgee catchment: Status and trends

    Although they do not have as high a biomass as carp, the abundance and widespread distribution of redfin perch and eastern gambusia is also likely to have significant impacts on native ... and significant increases in the abundance of alien redfin perch

  6. A preliminary assessment of the historical, current and future cover of seagrass in the estuary of the Parramatta River

    In a geomorphic context (sensu Roy 1984), seagrasses grow mainly in the Marine Tidal Delta and the Central Mud Basin portions of an estuary. ... Calculations of change in cover are presented in terms of the entrance to the estuary (Marine Tidal Basin),

  7. The Sydney inshore trawl-whiting fishery: codend selectivity

    Species relative abundance and biomass in T4mm100 and control.95 8.2.4. Species relative abundance and biomass in T5mm200 and control.96. ... 3.2.8. Faunal composition and relative abundance. Scientific names and common names for fish species follow

  8. Assessment of a Dual-frequency Identification Sonar (DIDSON) for application in fish migration studies

    2006, Baumgartner et al. in press). The exact mechanism by which this occurs remains unclear, although it is thought that a downstream moving fish may be exposed to areas of rapid ... 2007a). Analysis of these data permits detailed assessment of the fish

  9. PRE/POST CHAPTER HEADING

    abundance and population structure of fish migrating through the fishway, as well as fish behaviour and environmental conditions relevant to fishway usage. ... Moreover, effective fish dispersal in coastal environments is likely to maintain the

  10. Fish habitat assessment and protection in the Barwon-Darling and Paroo Rivers

    54. Figure 5.5 Mean total fish abundance (S.E.) (a) proportion of native species in total catch (b) and abundance of four fish species (c to f) per unit effort ... Fish-habitat associations in the Barwon-Darling and Paroo Rivers. The aim of this

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