the rain forecast has not arrived yet but may do so overnight.
See below for a great summing up of the NRWs anti stocking fiasco.
I find it strange
that you are not aware of the success of hatcheries on rivers across the
UK.
In Wales the Taff
is a notable success having taken a polluted river and returned it to a salmon
and sea trout fishery due to the stocking that has taken place. The
imposition of total catch and release is more to do with the calculation of
conservation limits and the methods used to calculate these, the improved parr
densities do not seem to support the theory that the river is failing. If
the Taff had not been stocked it would not be a salmon or sea trout
fishery. I am not familiar with the Rheidol but from what Moc told me
without the hatchery (to mitigate for the loss of spawning grounds) there would
be no fish in the river.
The hatchery run by the New Dovey Fishery
Association clearly demonstrates the benefit to fisheries on the Dovey which is
a premium angling river in Wales for both salmon and sea trout. Our own
small scale stocking program on the Conwy is, after 15 years, seeing improved
runs of fish with no evidence of RRS. The problems on the Conwy are due
to water quality on the Upper reaches of the Lledr, the main spawning area for
salmon (prior to the opening up of the upper Conwy with the construction of the
Conwy falls fish pass). The catch returns from the Conwy show that on
average 30% of the angler caught salmon have been fin clipped demonstrating
that SNR ponds work. Please note the time it has taken to recover the
Conwy i.e. it takes at least 3 spawning cycles (10 to 15 years) before results
are seen, once a natural run is established socking can cease – we stopped
using the SNR ponds on the upper Conwy 6 years ago.
The catch returns of
hatchery fish on the Taff was, I am told, between 25% and 40%, there is some
concern as to how the figure of 0.2% was derived, once I have received the data
I have asked NRW for all should become clear. The failure of the
mitigation scheme on the Dee is due to the operation of the Llyn Tegid sluices
and the water regulation control on Afon Tryweryn from Llyn Celyn dam.
Rather than identify the problem NRW chooses to close the hatchery claiming it
is ineffective (a steering group has been set up to investigate – this needs
hatchery fish!)
.
Out side Wales the
success of stocking is well documented on the Ribble and Lune. Habitat
improvements on feeder streams on both the Ribble and Lune by the EA on the
upper reaches did not attract any salmon and it was only when the fisheries
associations took over and planted out fry from hatcheries that salmon returned
to these streams, the Ribble and Lune are now significant salmon fisheries.
There has been successful stocking of the Trent with good runs of salmon now
entering the River Dove this is not yet open to salmon fishing but once it is
it will be a good river if the salmon I observed spawning are anything to go
by. The same applies to the Mersey with salmon spawning just below the A6
road bridge in the centre of Stockport (outside an office I was working in) and
salmon returning to the Irwell and other tributaries.
The most
successful recovery of a salmon fishery has to be the Girvan in Scotland.
The Girvan along with many other rivers (including the Wear now claimed as one
of the rivers not at risk), was affected by pollution from coal mines once
collieries where closed. Following a protracted battle for compensation
(by the ACA!) a mitigation hatchery was built by the Girvan Association.
Initially fish were stripped at the river side and eggs were taken to feeder
streams and placed into artificial redds whilst this was successful more
success was achieved once the hatchery was available with fish being stripped
and eggs being held in the hatchery until they were at the eyed ova
stage. The eggs were then ‘shocked’ before they were taken and
transplanted into artificial redds in feeder streams, the rod caught salmon
catch is now circa 1000 fish a year. The Galloway Rivers Trust (http://www.gallowayfisheriestrust.org/
) have followed this example and although it is early days they are also seeing
success in planting out eyed ova into artificial redds. There is far more
evidence of successful stocking than there is that harm is done or that
stocking is ineffective. The problem is that these do not suit NRW who
appear to have an ‘anti angling agenda’ and little concern for the aquatic
environment which they consider a resource to be used for recreation purposes –
other than angling.
Finally the
experience in Iceland of stocking has been dramatic it was interesting to here
Harry Legg-Burke tell the NRW Board that he fishes the Ranga but he stopped
short of explaining that without stocking this river would have no salmon due
to the loss of the spawning grounds following a volcanic eruption which
effectively created a dam on the river. Of course explaining the
success of the Icelandic rivers stocking program would have defeated the
argument to close the NRW hatcheries
.
The arrival of
Kyle Young into EA(W) set the agenda for the anti stocking lobby. I first
met Kyle Young in 2010 (I think but it may have been earlier) at a meeting in
Chester set up by John Stoner (Chair of The Rivers Trust) where Kyle expounded
his anti stocking theories and the use of environmental techniques.
Whilst the theories put forward by Kyle are interesting they are all based on
experiences from the USA on much larger river systems which are mainly
meandering rivers across plains, I pointed out that these techniques would not
work on North Wales spate rivers. It was interesting to listen to him at
the Glasgow conference trying to convince the audience that his paper, which
dealt with steelhead in USA rivers could be equated to Atlantic salmon in UK
rivers.
There is ample
evidence of successful stocking programs but there is no evidence of harm from
stocking salmon in UK waters, most rivers in the UK have at sometime been
stocked. Have a good meeting with NRW I wont hold my breath for a
successful outcome!
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