On the back of the ongoing collaboration between Australian and Canadian water quality scientists (see Previous News, Nov 2019), we are pleased to have published a paper titled "Recent developments in species sensitivity distribution modeling". Amongst other things, the paper describes a promising model averaging approach to SSDs and deriving water quality guideline values. The paper can be found here. Hope you enjoy the read,
In November 2019, a joint Australia - British Columbia (BC) - Canada workshop was held to discuss and refine BC's new 'ssdtools Shiny App' species sensitivity distribution fitting software for deriving water quality guideline values. This tool or a version thereof may eventually be considered for use in Australia. The Australian contingent was led by Prof David Fox (Environmetrics Australia) and included Dr Graeme Batley (CSIRO), Dr Rebecca Fisher (AIMS) and myself. We have just submitted a paper for publication - more details if/once it gets accepted and published.
The workshop report from the March workshop on GV derivation methods, held at AIMS, Townsville (see related News story from earlier in the year), has finally been finalised and published. You can download a copy here.
It's exciting to finally have published this paper, which took several years to complete. The paper will hopefully be of value to anyone looking to derive a local guideline value or to evaluate the appropriateness of one that has already been derived. It should be of use to industry, regulators and consultants alike. Thanks to some support from the Supervising Scientist Branch, it is available as Open Access, here.
The Darwin Water Quality Guidelines Workshop was run within the SETAC Australasia biennial conference in Darwin, on 9 July. We had a great attendance with between 50 to 70 conference attendees sitting in throughout the day. Presenters at this workshop were Chris Humphrey, John Bennett, Julia Fortune (NT Govt) and myself. We are now working with SETAC AU towards workshops in other major cites, both in Australia and New Zealand.
The Melbourne Water Quality Guidelines workshop was a big success, with approximately 120 attendees, and a diverse mix of presenters, including Victorian EPA staff providing local regulatory context, Bradley Moggridge presenting on cultural and spiritual values, and Graeme Batley, John Bennett and myself (pictured) detailing other key features of the revised Guidelines.
On 20 March, we finally held the first of the SETAC AU workshops on the revised Aust/NZ Water Quality Guidelines. The event was sponsored by Sydney Water and attended by more than 100 "watery" people. Pictured are the Sydney Water organisers with the three presenters. (Photo courtesy of Sydney Water).
From 27-29 March, a group of 14 researchers (most pictured here at AIMS' SeaSim facility) gathered at AIMS near Townsville to discuss what the future of guideline value derivation methods might look like. The workshop was fully funded by a “community of practice” grant from AIMS, and was one of the more productive such meetings I've attended. Thanks to Dr Rebecca Fisher for her motivation to get this off the ground. (Photo courtesy of AIMS).
Tom Mooney's recent paper busts the 'tropical v temperate sensitivity differences' myth, well, for ammonia anyway: "...differences in chronic toxicity observed between tropical and temperate species were likely due to the low ionic strength of the waters to which tropical species were exposed, rather than any inherent physiological differences between species from tropical and temperate regions.". Go to https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.4313 for full details.