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Author: Wetlands Research and Management P/L (Dr A. Storey) and Hydrobiology P/L (Dr R. Smith)
Date: February 2007
Fifty sites covering the length of the Fly River system, from the freshwater / estuarine interface to headwater streams were sampled in mid-2005 using combinations of gill nets, beach seine nets, collapsible baited traps, rod and line, cast nets, long lines, rotenone, electrofishing, and direct observation, with the intention to maximise the number of species taken from each site. Eighty-four native fish species from 29 Families and three exotic fish species from three Families were collected during the survey.
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Fish Diversity Survey - Appendix 3 (Part 1) |
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Author: Wetlands Research and Management P/L (Dr A. Storey) and Hydrobiology P/L (Dr R. Smith)
Date: February 2007
For each species taken during the Fish Biodiversity Survey, Appendix 3 presents maps of known locations of this species in both 2005 and pre-mine.
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Fish Diversity Survey - Appendix 3 (Part 2) |
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Author: Wetlands Research and Management P/L (Dr A. Storey) and Hydrobiology P/L (Dr R. Smith)
Date: February 2007
For each species taken during the Fish Biodiversity Survey, Appendix 3 presents maps of known locations of this species in both 2005 and pre-mine.
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Fish Diversity Survey - Appendix 3 (Part 2) |
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Author: Wetlands Research and Management P/L (Dr A. Storey) and Hydrobiology P/L (Dr R. Smith)
Date: February 2007
For each species taken during the Fish Biodiversity Survey, Appendix 3 presets maps of known locations of this species in both 2005 and pre-mine. |
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Flood plain impact study - assessment of ecological health in off-river water bodies |
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Author: Wetlands Research and Management P/L (Dr A. Storey)
Date: July 2007
Sampling of water quality, phytoplankton, microinvertebrates and macroinvertebrates was conducted in February 2006 in eight off-river water bodies (ORWBs) along the Middle Fly River. The purpose of the study was to assess the impact of the Ok Tedi mine on biota which form the basis of food webs for Fly River fish communities.
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Stable isotope analysis of food-web structure of Fly River flood plain water bodies |
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Author: Wetlands Research and Management P/L (Dr A. Storey)
Date: September 2006
Sampling of primary producers and primary, secondary and higher consumers was conducted at eight flood plain sites in February 2005 to compare aquatic food web structure and test for possible mine effects. Sites consisted of three control forested oxbow lakes upstream of the influence of the mine, three exposed forested oxbow lakes downstream of the mine and two blocked valley lakes. Sampling involved the collection of primary sources (algae and terrestrial plants) and higher consumers (prawns, aquatic insects and fish) at each site. Stable isotopes of nitrogen and carbon were then determined in the laboratory to determine sources of carbon (energy) supporting aquatic food webs. Prior to analysis, carbon isotope data were standardised to allow for between-site differences in the carbon signature of the algal sources; riparian sources had the same signatures across sites.
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Limnological investigation of Fly River flood plain water bodies |
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Author: Wetlands Research and Management P/L (Dr A. Storey)
Date: March 2006
As a part of a broader study of off-river water body ecology, a stratified sampling regime was established to investigate temporal and spatial variation in oxbow limnology and dissolved metal concentrations. Sampling was conducted at nine oxbows - each encompassed within one of three exposure levels (exposed, unimpacted control and impacted blocked valley lake). Sampling of oxbows was undertaken during both the wet and dry seasons 2005, and considered changes in water quality parameter profiles at different depths within the water column.
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Comparison of carbon sources supporting Fly River aquatic food webs |
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Author: Wetlands Research and Management P/L (Dr A. Storey)
Date: September 2005
Sampling was conducted in the Fly River above and below D'Albertis Junction in September/October 2003 to compare the contribution of algal carbon to the aquatic food webs at each location. The study was designed to test the hypothesis that mine impacts had reduced the contribution of algal carbon to the aquatic food web, with the result that riverine food webs downstream of the mine were now more dependent on riparian (rainforest) inputs. Sampling involved the collection of many primary sources (algae and terrestrial plants) and primary and higher consumers (prawns, aquatic insects and fish) at each site. Stable isotopes of nitrogen and carbon were then determined in the laboratory to determine sources of carbon (energy) supporting the riverine aquatic food webs at each site.
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Temporal changes in fish assemblages of the Fly River |
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Author: Wetlands Research and Management P/L (Dr A. Storey)
Date: March 2004
Temporal changes in fish community structure at key riverine and flood plain sampling locations in the Ok Tedi and Fly River were examined using multivariate analysis. The aims were to assess the extent of natural and mine-related changes in fish assemblage structure at each site, and declines / losses of species from parts of the system.
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Mud Clam Metal Levels in the Fly River Estuary |
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Author: Wetlands Research and Management P/L (Dr A. Storey)
Date: August 2003
Metal levels (Cu, Cd, Pb &Zn) were determined for whole animal tissue samples from mud clams collected from sites in the Fly River estuary and control estuaries. Differences were examined between areas (inner, middle and outer Fly Estuary and control sites) and reporting periods (1994//95, 1998/99, 2000/01 and 2001/02). Additionally, the dietary intake of metals by local villagers consuming shell fish was assessed.
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Testing of the Toxicity of Copper to Barramundi |
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Author: Australian Water Technologies
Date: September 1999
These tests were set up to determine those levels at which copper becomes toxic to barramundi.
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Testing of the Toxicity of Copper to Barramundi - Addendum |
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Author: Australian Water Technologies
Date: September 1999
These tests were set up to determine those levels at which copper becomes toxic to barramundi.
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Food Webs for the Fly River Fish Fauna |
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Author: A. W. Storey and R. E. W. Smith
Date: September 1999
The food web studies establish the structure and function of the food web for both riverine and floodplain ecosystems. This is an important prerequisite for determining potential impacts since there was previously little information avaliable on the food webs of the Ok Tedi and Fly River.
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Energy Sources Supporting Fly River Fish Communities |
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Author: S. Bunn, C. Tenakani and A. W. Storey
Date: July 1999
This study used carbon and nitrogen isotope analysis to better define the energy sources and pathways in the food web. The relative contributions of forest and grassland products, and aquatic algae of the food web were determined.
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Effects of River Bed Aggradation on Fish Habitat of the Fly River |
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Author: Wetlands Research and Managemet P/L (Dr A. Storey) and Andrew Marshall Pty Ltd
Date: February 2003
This study was conducted to quantify the extent of loss of fish habitat in impacted reaches of the lower Ok Tedi and upper middle Fly River, and to attempt to relate habitat loss to the disposal of mine waste into the system.
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Relationships Between Habitat Availability and Fish Diversity: A Review |
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Author: Wetlands Research & Management (Dr A. Storey)
Date: February 2003
A review of the literature to establish conclusively if a general relationship exists between habitat availability and fish diversity. The review also sourced and summarised literature documenting the impacts of river bed aggradation on fish habitat availability, and if available, on abundance, biomass and/or diversity of fish.
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