This
project was funded under the 2009/2010 regional and community groups funding
round for Natural Resource Management by the Government of Western Australia,
Lowlands Conservation Association and Serpentine River Group which addressed
aquatic biodiversity, Biosecurity and Water Quality within the largest
privately held conservation property in Southwestern Australia. The project was the first of its kind to
examine the biology and ecology of the threatened Carter’s Freshwater
Mussel. Key findings showed that several
species of native freshwater fish, including the threatened Pouched Lamprey, Carter’s
Freshwater Mussel and the iconic Smooth Marron are using the Bush Forever site
as a key spawning ground and nursery within an area of the Serpentine River
surrounded by land impacted by human activities. It also showed the benefit of conserving
riparian vegetation to shade the river providing thermal refuges for aquatic
fauna. For example, there was up to a
seven degree (°C) difference in water temperature between sites within the
conservation block and degraded sites within an open, weedy drain and the trees
and woody plant debris enhanced native fauna habitat. Management activities by the landowners are reducing
impacts through restricting cattle movements by fencing and restricted access
to the river, installing riffles for stream oxygenation and re-planting
riparian vegetation to reduce nutrient loads within the system.