Australia: According to recent US satellite images the algal blooms and high temperatures have caused mass deaths of fish on South Australian beaches over the past month. Biosecurity SA manager of aquatic pests Vic Neverauskas said the images provided evidence that high water temperatures and algal content (in red) were responsible, rather than other theories, ranging from nuclear radiation to hyper-salinity.
“The red colouring in both Spencer Gulf and Gulf St Vincent shows high chlorophyll levels, which are the way of measuring algal levels,” he explained.
“Chlorophyll content in the water over three days around March 6, 2013, shows the order of magnitude between oceanic waters and the gulf waters. It shows a 10 times increase in chlorophyll along the western side of both gulfs Spencer and St Vincent,” he added.
Neverauskas said the time of the high algal and high temperature readings coincided with the dead fish washing up on Adelaide beaches.
Source: The Australian