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Displaying items by tag: Weir

#GALWAY BAY NEWS - Archaeologists in Galway Bay have unearthed an extensive tidal weir complex at Barna and a late medieval quay on Mutton Island, The Irish Times reports.

The weir, which is estimated to date from the early Christian period, consists of a granite barrier with channels cut through it, designed to control the flow of water in the adjacent lagoon.

Connemara archaeologist Michael Gibbons suggests that the weir implies a considerable fish stock migrating through the area into the Barna river.

The remains of a large Iron Age fort which overlooks the site may also have given its name to the townland of Knocknacarra, which is now a populous suburb of Galway.

Meanwhile, further east at Mutton Island a medieval quay which predates the current lighthouse quay has been found.

The Irish Times has more on the story HERE.

Published in Galway Harbour
#ANGLING - A plaque paying tribute to the late secretary of the Dublin Salmon Anglers' Association has been inveiled at Carton Estate in Co Kildare.
Patrick 'Pat' O'Molloy, who died in November last year, was commemmorated for his pioneering work over the last 35 years in the rehabilitation and restoration of wild salmon stock in the River Liffey, The Irish Times reports.
This involved introducing micro-tagged smolts into the Rye, a tributary of the Liffey upriver of the Carton Estate weir which was impassable from further downstream.
Sadly O'Molloy died before the return of salmon to the Liffey in a year that also saw their return to the Tolka afer more than a century.
Former fisheries CEO Alan McGurdy said at the ceremony: "As you all know, Pat was an angler, a board member, environmentalist, fish farmer and most of all, a friend.
"Today is some recognition to the great man for the tremendous work he did to look after our fish."

#ANGLING - A plaque paying tribute to the late secretary of the Dublin Salmon Anglers' Association has been inveiled at Carton Estate in Co Kildare.

Patrick 'Pat' O'Molloy, who died in November last year, was commemmorated for his pioneering work over the last 35 years in the rehabilitation and restoration of wild salmon stock in the River Liffey, The Irish Times reports.

This involved introducing micro-tagged smolts into the Rye, a tributary of the Liffey upriver of the Carton Estate weir which was impassable from further downstream.

Sadly O'Molloy died before the return of salmon to the Liffey in a year that also saw their return to the Tolka afer more than a century.

Former fisheries CEO Alan McGurdy said at the ceremony: "As you all know, Pat was an angler, a board member, environmentalist, fish farmer and most of all, a friend. 

"Today is some recognition to the great man for the tremendous work he did to look after our fish."

Published in Angling
Waterways Ireland, as part of a planned inland waterways programme of improvement works, has installed a floating Weir Boom across the weir at Clarendon Lock, Knockvicar on the Shannon Navigation.

Installing the 20m boom was initiated with assembly of the boom off-site in Rooskey. In early December, the drilling for the piles was facilitated by floating a piling rig to the site on pontoons. Piles are required to hold the Weir Boom in place. The boom was then floated to the site and secured in place. The works cost approximately €55,000.

Installation of the boom improves the amenity at Knockvicar in addition to lock gate replacement and upgraded lockhouse facilities which have been completed by Waterways Ireland in recent years.

The Weir Boom is a preventative measure installed by Waterways Ireland to protect boaters and their craft from being drawn over the weir. Space has been left to allow for the passage of canoeists. There will be no environmental impacts on fish or other wildlife from the installation or operation of the Weir Boom.

Published in Inland Waterways

Marine Science Perhaps it is the work of the Irish research vessel RV Celtic Explorer out in the Atlantic Ocean that best highlights the essential nature of marine research, development and sustainable management, through which Ireland is developing a strong and well-deserved reputation as an emerging centre of excellence. From Wavebob Ocean energy technology to aquaculture to weather buoys and oil exploration these pages document the work of Irish marine science and how Irish scientists have secured prominent roles in many European and international marine science bodies.

 

At A Glance – Ocean Facts

  • 71% of the earth’s surface is covered by the ocean
  • The ocean is responsible for the water cycle, which affects our weather
  • The ocean absorbs 30% of the carbon dioxide added to the atmosphere by human activity
  • The real map of Ireland has a seabed territory ten times the size of its land area
  • The ocean is the support system of our planet.
  • Over half of the oxygen we breathe was produced in the ocean
  • The global market for seaweed is valued at approximately €5.4 billion
  • · Coral reefs are among the oldest ecosystems in the world — at 230 million years
  • 1.9 million people live within 5km of the coast in Ireland
  • Ocean waters hold nearly 20 million tons of gold. If we could mine all of the gold from the ocean, we would have enough to give every person on earth 9lbs of the precious metal!
  • Aquaculture is the fastest growing food sector in the world – Ireland is ranked 7th largest aquaculture producer in the EU
  • The Atlantic Ocean is the second largest ocean in the world, covering 20% of the earth’s surface. Out of all the oceans, the Atlantic Ocean is the saltiest
  • The Pacific Ocean is the largest ocean in the world. It’s bigger than all the continents put together
  • Ireland is surrounded by some of the most productive fishing grounds in Europe, with Irish commercial fish landings worth around €200 million annually
  • 97% of the earth’s water is in the ocean
  • The ocean provides the greatest amount of the world’s protein consumed by humans
  • Plastic affects 700 species in the oceans from plankton to whales.
  • Only 10% of the oceans have been explored.
  • 8 million tonnes of plastic enter the ocean each year, equal to dumping a garbage truck of plastic into the ocean every minute.
  • 12 humans have walked on the moon but only 3 humans have been to the deepest part of the ocean.

(Ref: Marine Institute)

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