Continued decline of native fish and crayfish populations in Lower South East

Continued decline of native fish and crayfish populations in Lower South East

One of the few variegated pygmy perch sampled in Dec 2013

Recent condition monitoring – funded by DEWNR – has highlighted some (more) concerns for the South Australian populations of Glenelg Spiny Crayfish and the small-bodied native fish species, variegated pygmy perch. Glenelg spiny crayfish populations remained stable in a few locations (namely Ewens Pond), but the species was absent (or declined) in most locations where it had previously been recorded. In terms of variegated pygmy perch, the story was just as worrying, with a dramatic drop in numbers over the past year, and the ongoing decline since 2006. Whilst more monitoring is necessary to better understand the status of these species, it is clear that both species are still in decline and the continuation (and expansion) of restoration actions is needed – not easy to achieve but vitally important!

Whilst the outcomes were not good, it was great to have the involvement of more than five volunteers during the week of sampling. Thanks to Oisín Sweeney and Natalie Misic (DEWNR) and the volunteers (special thanks to Helen, Tiffany and Becky) for their help.

Let’s hope 2014 brings some positive news for these two threatened species!

 

Nick Whiterod
Nick Whiterod


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