See the short article on the University of Plymouth website.
Raising of water tables by blocking of grips appears not to be all good news. First, it was the increase in Methane emissions after re-wetting and now it is damage to insect populations. There are also question marks about the impact on dissolved and particulate organic carbon.
This is all very much emerging knowledge, and I will be trying to fill in the gaps in this Blog as more information comes available.