The impact of small and large impoundments on freshwater mussel distribution in the Hawkesbury‐Nepean River, southeastern Australia

The influence of weirs on the distribution of freshwater mussels was investigated in the Hawkesbury‐Nepean River, Australia. Distribution of species and densities of size classes were strongly correlated with catchment level factors (e.g. location around a major impoundment, stream order). At catchment scale, weir height, presence of a fish barrier, fish ladder type and position above or below small weirs did not influence the presence/absence of mussel populations. Lower mussel densities in the upper catchment may therefore reflect inhibition of host fish migration.

[1]  Jess W Jones,et al.  Chlorine toxicity to early life stages of freshwater mussels (Bivalvia: Unionidae) , 2006, Environmental toxicology and chemistry.

[2]  M. Byrne,et al.  Is the decline of freshwater mussel populations in a regulated coastal river in south‐eastern Australia linked with human modification of habitat? , 2006 .

[3]  J. Layzer,et al.  Restoration and colonization of freshwater mussels and fish in a southeastern United States tailwater , 2006 .

[4]  M. Gangloff,et al.  A new species of freshwater mussel (Bivalvia: Unionidae), Pleurobema athearni , from the Coosa River Drainage of Alabama, USA , 2006 .

[5]  M. Brainwood.  The hierarchical effects of anthropogenic impacts and natural filters on the distribution of freshwater mussels in the Hawkesbury-Nepean River, NSW, Australia , 2006 .

[6]  Hugh P Possingham,et al.  Zero tolerance ecology: improving ecological inference by modelling the source of zero observations. , 2005, Ecology letters.

[7]  W. Erskine,et al.  Variability in the development, persistence and breakdown of thermal, oxygen and salt stratification on regulated rivers of southeastern Australia , 2005 .

[8]  N. Bond.  Spatial variation in fine sediment transport in small upland streams: the effects of flow regulation and catchment geology , 2004 .

[9]  E. Stanley,et al.  Response of Unionid Mussels to Dam Removal in Koshkonong Creek, Wisconsin (USA) , 2004, Hydrobiologia.

[10]  J. Taylor,et al.  The influence of flow impoundment and river regulation on the distribution of riverine macroinvertebrates at Mammoth Cave National Park, Kentucky, U.S.A. , 2004, Hydrobiologia.

[11]  R. M. Nally.  Regression and model-building in conservation biology, biogeography and ecology: The distinction between – and reconciliation of – ‘predictive’ and ‘explanatory’ models , 2000, Biodiversity & Conservation.

[12]  M. Byrne.  Reproduction of river and lake populations of Hyridella depressa (Unionacea: Hyriidae) in New South Wales: implications for their conservation , 1998, Hydrobiologia.

[13]  T. Newton,et al.  Effects of ammonia on juvenile unionid mussels (Lampsilis cardium) in laboratory sediment toxicity tests , 2003, Environmental toxicology and chemistry.

[14]  Martin Krogh,et al.  Roles of land use resolution and unit-area load rates in assessment of diffuse nutrient emissions. , 2003, Journal of environmental management.

[15]  W. Haag,et al.  Host Fishes and Infection Strategies of Freshwater Mussels in Large Mobile Basin Streams, USA , 2003, Journal of the North American Benthological Society.

[16]  P. Gehrke,et al.  Changes in fish communities of the Shoalhaven River 20 years after construction of Tallowa Dam, Australia , 2002 .

[17]  P. Cosgrove,et al.  A standardised method for assessing the status of freshwater mussels in clear, shallow rivers , 2001 .

[18]  M. Christman,et al.  A Review of Quadrat-Based Sampling of Rare, Geographically Clustered Populations , 2000 .

[19]  I. Stuart,et al.  An assessment of the effectiveness of a vertical‐slot fishway for non‐salmonid fish at a tidal barrier on a large tropical/subtropical river , 1999 .

[20]  C. Vaughn,et al.  Impoundments and the Decline of Freshwater Mussels: a Case Study of an Extinction Gradient , 1999 .

[21]  R. Neves,et al.  Evidence of Immunological Responses by a Host Fish ( Ambloplites rupestris ) and two Non-Host Fishes ( Cyprinus carpio and Carassius auratus ) to Glochidia of a Freshwater Mussel ( Villosa iris ) , 1999 .

[22]  J. Mossa,et al.  Sediment, Land Use, and Freshwater Mussels: Prospects and Problems , 1999, Journal of the North American Benthological Society.

[23]  S. McMurray,et al.  Recruitment in a Freshwater Unionid (Mollusca : Bivalvia) Community Downstream of Cave Run Lake in the Licking River, Kentucky , 1999 .

[24]  Wendell R. Haag,et al.  Role of ecological factors and reproductive strategies in structuring freshwater mussel communities , 1998 .

[25]  Pollard,et al.  Changes in river fish assemblages associated with vegetated and degraded banks, upstream of and within nutrient‐enriched zones , 1998 .

[26]  G. Watters,et al.  SMALL DAMS AS BARRIERS TO FRESHWATER MUSSELS (BIVALVIA, UNIONOIDA) AND THEIR HOSTS , 1996 .

[27]  L. Pinder.  Marsh deer Blastocerus dichotomus population estimate in the Paraná River, Brazil , 1996 .

[28]  J. Sickel,et al.  Changes in mussels (Bivalvia: Unionidae) fauna within the Kentucky portion of Lake Barkley since impoundment of the lower Cumberland River , 1996 .

[29]  James B. Layzer,et al.  Microhabitat use by freshwater mussels and recommendations for determining their instream flow needs , 1995 .

[30]  C. Humphrey,et al.  The reproductive cycles and glochidia of fresh-water mussels (Bivalvia: Hyriidae) of the Macleay River, northern New South Wales, Australia , 1986 .

[31]  I. Hiscock,et al.  A monograph of the freshwater mussels (Mollusca: Pelecypoda) of the Australian region , 1958 .