Plus in many cases agricultural run-off as well, presumably?

I work on chalk streams in East Yorkshire. Possible slightly different in their hydrology to your rivers, but over here the main reason for too much siltation is that most of the channel has been widened and deepened, meaning the flow is too slow to keep the gravels 'clean'.

#eastyorkshire #wildlife #chalkstreams

Also worth highlighting misconceptions about ivy "strangling" trees, and people thinking therefore it needs to be removed.

As a follow-up, I see you also run the mammal and reptile groups. Happy to be added onto those as well.

Hiya! Yes please, that sounds great. Happy for you to add me, thanks 😁