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New evidence is indicating that wild salmon are adapting to climate change by feeding in colder waters, The Irish Times reports.
According to salmon expert Dr Ken Whelan, wild salmon are now diving as far as 800m below the surface - normally the preserve of the sperm whale - to feed for periods of up to 24 hours during winter months.
They are also travelling closer to the polar ice fields, in response to the warming of the Atlantic Ocean.
The change in behaviour was noted at a salmon summit in France attended by more than 100 fishery managers and scientists from across Europe, which was convened to discuss the threat of climate change to wild salmon stocks at sea.
Plankton levels are particularly affected by the changing wind and ocean currents, said Dr Whelan of findings from the EU-funded Salsea programme, which he led.
“Surviving the first winter at sea seems to be the key challenge for these stocks, and the salmon in the northern states like Norway and Russia, seems to be less affected,” he said.
But the recent return of wild salmon to the Tolka in Dublin, as well as healthy returns along other inland waterways, highlighted that the news was not all doom and gloom.
The Irish Times has more on the story HERE.

New evidence is indicating that wild salmon are adapting to climate change by feeding in colder waters, The Irish Times reports.

According to salmon expert Dr Ken Whelan, wild salmon are now diving as far as 800m below the surface - normally the preserve of the sperm whale - to feed for periods of up to 24 hours during winter months.

They are also travelling closer to the polar ice fields, in response to the warming of the Atlantic Ocean.

The change in behaviour was noted at a salmon summit in France attended by more than 100 fishery managers and scientists from across Europe, which was convened to discuss the threat of climate change to wild salmon stocks at sea.

Plankton levels are particularly affected by the changing wind and ocean currents, said Dr Whelan of findings from the EU-funded Salsea programme, which he led.

“Surviving the first winter at sea seems to be the key challenge for these stocks, and the salmon in the northern states like Norway and Russia, seems to be less affected,” he said.

But the recent return of wild salmon to the Tolka in Dublin, as well as healthy numbers along other inland waterways, highlighted that the news was not all doom and gloom.

The Irish Times has more on the story HERE.

Published in Fishing

The Half Ton Class was created by the Offshore Racing Council for boats within the racing band not exceeding 22'-0". The ORC decided that the rule should "....permit the development of seaworthy offshore racing yachts...The Council will endeavour to protect the majority of the existing IOR fleet from rapid obsolescence caused by ....developments which produce increased performance without corresponding changes in ratings..."

When first introduced the IOR rule was perfectly adequate for rating boats in existence at that time. However yacht designers naturally examined the rule to seize upon any advantage they could find, the most noticeable of which has been a reduction in displacement and a return to fractional rigs.

After 1993, when the IOR Mk.III rule reached it termination due to lack of people building new boats, the rule was replaced by the CHS (Channel) Handicap system which in turn developed into the IRC system now used.

The IRC handicap system operates by a secret formula which tries to develop boats which are 'Cruising type' of relatively heavy boats with good internal accommodation. It tends to penalise boats with excessive stability or excessive sail area.

Competitions

The most significant events for the Half Ton Class has been the annual Half Ton Cup which was sailed under the IOR rules until 1993. More recently this has been replaced with the Half Ton Classics Cup. The venue of the event moved from continent to continent with over-representation on French or British ports. In later years the event is held biennially. Initially, it was proposed to hold events in Ireland, Britain and France by rotation. However, it was the Belgians who took the ball and ran with it. The Class is now managed from Belgium. 

At A Glance – Half Ton Classics Cup Winners

  • 2017 – Kinsale – Swuzzlebubble – Phil Plumtree – Farr 1977
  • 2016 – Falmouth – Swuzzlebubble – Greg Peck – Farr 1977
  • 2015 – Nieuwport – Checkmate XV – David Cullen – Humphreys 1985
  • 2014 – St Quay Portrieux – Swuzzlebubble – Peter Morton – Farr 1977
  • 2013 – Boulogne – Checkmate XV – Nigel Biggs – Humphreys 1985
  • 2011 – Cowes – Chimp – Michael Kershaw – Berret 1978
  • 2009 – Nieuwpoort – Général Tapioca – Philippe Pilate – Berret 1978
  • 2007 – Dun Laoghaire – Henri-Lloyd Harmony – Nigel Biggs – Humphreys 1980~
  • 2005 – Dinard – Gingko – Patrick Lobrichon – Mauric 1968
  • 2003 – Nieuwpoort – Général Tapioca – Philippe Pilate – Berret 1978

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