Here we go again; otters v anglers, and the outcome is predictably that otters win every time. Far more attractive than an old bloke in camo smoking fags on the bank.
John Wilson has long held fairly rabid views on otter predation; I sympathise, because it's undoubtedly true that, on some rivers, they've had a significant effect. But that's not true on other rivers, and the sooner we begin to understand what makes this so, the better.
We aren't going to find out if we don't let the scientists do their work, and the outcome may be fisheries improvements which will deter otters and increase fish recruitment; because at the core of the rivers' problems is stock recruitment.
Rivers have become cleaner in EA terms but not necessarily better for fish. When I moved to Peterborough, the Nene was a fairly turbid river all year, the run-off of nitrates ensuring the algae and other microbial life fairly sizzled. It didn't bother the bream, roach and chub, which were everywhere and in large numbers. The clarity of the Nene in summer now is trout-stream clarity, and I believe this is one of the problems.
Sight feeders like otters and cormorants must have a field day in these conditions, but more importantly, the old river board policy of tidying the banks and dredge for depth means there aren't enough overgrown places for fish to shelter. It's proven that cormorants predation is very much reduced where good fish cover has been introduced. Before man started managing rivers, this cover existed in the form of fallen trees and other obstacles to sight hunters.
As I have written here so many times, we won't get licences to shoot otters (though I'm sure a few otters already get 'lead poisoning). So angling has to devote its time to reversing the 'improvements' the rivers have been subjected to. In the first place, the preoccupation with containing floodwater has to be reversed; we need to persuade the EA to define flood meadows, and get landowners to manage them, which will mitigate flooding in towns, where it really IS a problem.
But somehow we also need to persuade the EA that rivers can cope with a little more nitrate pollution; after all, algae and single-celled animals, plus plants, are the building blocks of river ecology. The reason the EA has cracked down so hard on nitrates has nothing to do with ecology; it has to do with saving the water industry money as it tries to achieve EU targets for nitrate pollution.
I'm sorry that John Wilson is leaving the UK but he takes with him a point of view that has become redundant. It's not that he's wrong but that his solution belongs in Victorian Britain.