PLoS One 2014 11;9(4):e94524. Epub 2014 Apr 11.
Institute for Land, Water and Society, Charles Sturt University, Albury, New South Wales, Australia; School of Agricultural and Wine Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia.
Hypoxia represents a growing threat to biodiversity in freshwater ecosystems. Here, aquatic surface respiration (ASR) and oxygen thresholds required for survival in freshwater and simulated blackwater are evaluated for four lowland river fishes native to the Murray-Darling Basin (MDB), Australia. Juvenile stages of predatory species including golden perch Macquaria ambigua, silver perch Bidyanus bidyanus, Murray cod Maccullochella peelii, and eel-tailed catfish Tandanus tandanus were exposed to experimental conditions of nitrogen-induced hypoxia in freshwater and hypoxic blackwater simulations using dried river red gum Eucalyptus camaldulensis leaf litter. Read More