Subscribe To Reef And Rivers
iTunes | Stitcher | Google Podcast | Spotify | iHeart | Download
Fish populations (both native and exotic) are a good indicator of the health of waterways. The Wet Tropics Report Card includes a fish index as part of our annual assessment of Wet Tropics Waterways but until recently this was one of the areas where no data was available.
However, the Queensland Government's Department of Environment and Science (DES) has been conducting fish surveys and the data collected from these will now be included in the Report Card, giving an even more comprehensive picture of the health of our waterways.
Recently we caught up with David Moffat, one of DES's Fisheries Ecologists, as he was conducting electrofishing surveys in the Mossman River. We talked to him about the importance of fish surveys and his observations about changes in our rivers.
00:46 A quick overview of what David has been doing in our region
01:22 The importance of conducting fish surveys
02:11 How fish can indicate the health of a river system
02:52 How to collect fish for research purposes
04:12 How do our river systems differ to other regions
04:45 Touching on the interesting species found
06:17 The reasons for discovering these new species
06:48 The spread of exotic species
07:42 The effects of exotic species on our native fish
08:46 Other threats to our native fish
10:00 The negative impacts of moving native species
12:10 Other uses for the data being collected
Contacts, Links & Resources
More details on the 2019 Wet Tropics Report Card