envirogy

Marketplace

  • Eriez Waste Management
    Eriez

    All metals recovery with Eriez at RWM 2017

    Eriez will be showcasing their ECS module for complete ferrous and non-ferrous metals separation on stand 5P10-Q11 at the Recycling and Waste Management show taking place at the NEC, Birmingham from the 12th to 14th of September 2017.

  • Bunting Magnetics Europe Ltd Waste Management
    Bunting Magnetics Europe Ltd

    Combined Magnetic Separation Force on display at RWM2017

    For the first time, the combined Magnetic Separation force of Bunting Magnetics Europe Ltd and Master Magnets will be on stand 5P80 at RWM 2017 (NEC, Birmingham, UK 12th – 14th September 2017).

  • RWM 2017 Trade Shows & Conferences
    RWM 2017

    New features and event zones for RWM 2017

    Bigger, better and more collaborative, the UK's premier event dedicated to Energy, Water, Recycling, Renewables and Waste Management is relaunched

  • F&P Sponsors Movers & Shakers
    F&P Sponsors

    F&P reports 'significant interest' at AD and Biogas Exhibition

    Green energy businesses are crying out for investment, and looking at the alternative finance sector to provide it, according to F&P Sponsors, the P2P lending specialist.

RWM button left

Wednesday, 08 March 2017 10:40

Targets for creepy crawlies in Hampshire rivers aim to inspire nationwide method

Targets for certain waterlife like mayfly larvae and shrimps to be present in Hampshire rivers are being set jointly by the Environment Agency and a fish conservation charity, and it is a move that could inspire river management nationwide.

River sampling2The Environment Agency (EA) in Hampshire and Salmon & Trout Conservation UK (S&TC UK) have for the first time agreed key environmental local bespoke targets for the Rivers Test and Itchen to help drive ecological improvements. S&TC UK believe this is a precedent for other rivers to follow.

The local bespoke targets are set around the number of key water invertebrates - that should be expected in a 3-minute kick-sweep sample in these 'Classic' chalkstreams.

The targets are for the rivers to support at least 10 separate mayfly species and 500 freshwater shrimps known as Gammarus, in the middle and lower reaches of the catchment - all of which are susceptible to different forms of pollution and so their presence or absence gives an accurate analysis of the environmental health of a river. Targets for the upper reaches are still being developed.

These local bespoke targets, supported by independent evidence and the EA's own data, are one major result to come from S&TC UK's Riverfly Census research, carried out by Dr Nick Everall of Aquascience Ltd across more than 20 rivers in England and Wales.

River flies play a vital role in a river's food chain - lose them, and other aquatic wildlife will follow. Water invertebrates matter for fish, mammals and birds.

riverlife sampling1S&TC UK is fighting to stop a downward trend in the water life of our chalkstreams. Its national Riverfly Census data has showed that fine sediments and excessive phosphate nutrient are especially damaging to mayfly species, and while Gammarus are also susceptible, they are particularly sensitive to a whole host of other contaminants.

The EA routinely monitor chemical water quality and river ecology as indicators of river health. These new local bespoke mayfly and Gammarus targets will now feature in the way the Environment Agency monitors the health of the Test and Itchen. 

Nick Measham, S&TCUK's Freshwater Campaign's Officer, said: "S&TC UK will seek to establish similar targets for the other 18 rivers currently in the Riverfly Census by working to agree bespoke river targets with the relevant local EA scientists."

S&TC UK's Head of Science, Dr Janina Gray, said: "While our recent analysis painted a generally worrying picture on the health of mayfly and Gammarus populations, we have now identified and agreed a simple scientifically credible benchmarking figure for invertebrates in a healthy river.

"Once we have a standard for all rivers along the lines of the local bespoke Test and Itchen agreement, we can help local river managers to develop solutions and so restore our waterways to their former glory."

www.salmon-trout.org/riverfly-census

www.aquascienceconsultancy.co.uk

 

RWM button right