How long does DNA last for in the environment? Is there a risk of finding something that is no longer there?
The average half life of eDNA is about 48 hours [...]
How do water currents affect the results? How does it work with movement of water downstream in rivers or in currents in the sea?
While eDNA has been known to theoretically travel many kilometres [...]
Do you have examples of where you can demonstrate that eDNA can differentiate between different points in a fast flowing river?
In our Amazon baseline study we found that samples from [...]
Is there a requirement for multiple kits for large water bodies?
Yes, this is definitely recommended. We suggest that triplicate or [...]
What methods should I use to collect water samples without risking contamination?
The best way to avoid contamination is to use our [...]
How small of a contamination is required to show in results?
A very small amount! So be careful about eating fish [...]
Are there any potential issues with only collecting samples from the boundaries of a large water body. For GCN it’s okay of course, but fish or other species that don’t frequent that part of the water?
This will depend on the level of mixing in the [...]
For the marine research, how can we be convinced that the sampling point can represent the wide range of study area? Do we have to take a lot of samples in proportion to the size of area?
eDNA in the marine environment is much more dilute than [...]
What criteria do you use to set a sampling point?
This is dependent on multiple site factors and the study [...]
Can you detect abundance?
eDNA provides replicable and meaningful data on relative abundance of [...]
