Demonstrating the presence or absence of species with eDNA

With ORVIdetect we are able to measure invasive exotics in water and silt samples taken from surface waters. Species such as the American Red Crayfish (Procambarus clarkii), the Muskrat (Ondatra zibethicus), the American Bull Frog (Rana catesbeiana) and the Topmouth gudgeon (Pseudorasbora parva) are detectable with eDNA. With eDNA methods …

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Measuring invasive exotics with eDNA

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With ORVIdetect we are able to measure invasive exotics in water and silt samples taken from surface waters. Species such as the American Red Crayfish (Procambarus clarkii), the Muskrat (Ondatra zibethicus), the American Bull Frog (Rana catesbeiana) or the Topmouth gudgeon (Pseudorasbora parva) can be detected with eDNA. Commissioned by …

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Muskrats

In the Netherlands muskrats are caught in order to prevent damage to dykes and embankments. It may sound strange, but it is true: muskrats can be detected using DNA techniques. The muskrat leaves a trace of DNA in the water. The trace comes from faeces, hair, skin cells and the …

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Biological remediation WAVIN started

The ground on the WAVIN Services site in Hardenberg has been contaminated with solvents for a long time. These substances were formerly used as degreasing agents. WAVIN has been controlling this groundwater contamination since the 1990’s. Ground water was be pumped up and treated above ground. But this approach was …

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Monitored Natural Attenuation (MNA)

Scientific research does not stand still. New types of bacteria are being discovered every year, such as those involved in the degradation of benzalkonium chlorides (BAC, a cleaning and disinfecting agent) and in 2017 a species that anaerobically degrades benzene. Many contaminants can be degraded by bacteria, also in soil …

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Feasibility and remediation plan

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When selling or redeveloping a plot or location, the suspicion of a soil or groundwater pollution being present brings along obligations. Orvion makes an inventory of soil pollution that are presen and a remediation strategy so that you not only know the extent of the contamination, but can also gain …

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Detecting calamities with DNA techniques

In 2016the Waterschap Rijn en Ijssel (Rhine and Ijssel Water Authority) suffered from inhibited nitrification at one of their treatment plants. The cause: a long-term discharge that was toxic to the nitrifying biomass. As a result ammonium in the sewage water was no longer successfully removed. This prompted us to …

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Measurement of antibiotic resistance

Antibiotic resistance (ABR) is seen as one of the greatest threats to public health. Already every year in Europe more than 25,000 people die from the consequences. These people are often already seriously ill. But young healthy people are also increasingly being hospitalised as a result of infections, such as …

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