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A Harbour Seal photographed at Dun Laoghaire Marina on Dublin Bay, Ireland. Also known as the common seal, is a true seal found along temperate and Arctic marine coastlines of the Northern Hemisphere. The most widely distributed species of pinnipeds, they are found in coastal waters of the northern Atlantic and Pacific oceans, Baltic and North seas. Photo: AfloatA photograph of a Harbour Seal taken at Dun Laoghaire Marina on Dublin Bay, Ireland. Also known as the common seal, this species can be found along temperate and Arctic marine coastlines throughout the Northern Hemisphere. They are the most widely distributed species of pinnipeds and can be found in the coastal waters of the northern Atlantic and Pacific oceans, as well as the Baltic and North Seas. Photo: Afloat

Displaying items by tag: Owenriff Catchment

#Angling - Inland Fisheries Ireland has published its 2017 fish stock survey for the Owenriff catchment as well as its rehabilitation plan for the system to promote the recovery of brown trout and salmon in its lakes and rivers.

The Fish Stock Survey — which was conducted in the summer of 2017 and forms the basis for the Rehabilitation Plan — deduces that the introduction of pike into the catchment has been the significant factor in the declining fish stocks.

“As there are little or no major anthropogenic pressures in the catchment to cause the decline in fish stocks, it is reasonable to infer that the introduction of pike and their subsequent range expansion in the Owenriff catchment (with impacts of competition for food and space and predation on resident and migratory fish) is the main factor causing the decline of brown trout and salmon in the Owenriff catchment. Research from Europe and North America supports this finding,” the reports states.

Anthropogenic pressures include human-induced factors such as urban growth, deleterious discharges, farming activities and introduction of alien species.

Although pike were captured for the first time by IFI staff in 2009 in two lakes in the catchment (Loughs Bofin and Agraffard) and efforts were made by IFI staff to remove the pike from the system, they did not show up in two catchment-wide surveys in 1997 and 2007 and were only officially recorded in a survey for the first time in 2015.

However, the latest report, from the 2017 survey, confirms that pike are present all over the Owenriff catchment “in areas where they can freely gain access and in some areas where they cannot naturally gain access.”

Welcoming the publication of the two reports, Minister Sean Kyne TD said: “We have acted swiftly since the interim results of this survey became known. In late January, I announced that Inland Fisheries Ireland is to commence fish stock management operations on the Owenriff catchment to protect and restore trout stocks which have been impacted by recent introductions of pike to the catchment.

“The consequences of not taking wider remedial action on the basis of these survey results would lead to further decline in ecological biodiversity in the catchment, so I very much welcome the publication by IFI of the Owenriff Fish Population Rehabilitation Plan 2018.”

The minister continued: “The purpose of the plan is to develop a fisheries rehabilitation project that can be undertaken on the catchment to promote the recovery of the brown trout (both resident and migratory Corrib) and salmon populations in both lakes and rivers. It will take time and will be costly, but we are already underway with this very constructive and positive roadmap.”

With stock management actions having already commenced, the success of the broader rehabilitation project will depend on applying the correct tools to rehabilitate the brown trout and salmon populations in the Owenriff catchment.

These include fisheries enhancement works in selected sub-catchments to favour brown trout and salmon; genetic restoration; removing the problem (pike control); reducing anthropogenic impacts in the catchment; public awareness (especially in relation to the impacts of the introductions of species not indigenous to an area); interagency co-ordination; climate change mitigation; and any other necessary measures.

The Owenriff catchment is located on the north-western end of the Lough Corrib catchment, and the main Owenriff River drains into Lough Corrib Upper downstream of Oughterard, Co Galway. The Lough Corrib catchment itself is the largest and most important wild salmonid catchment in Ireland, and Lough Corrib is considered the premier wild brown trout fishery in Ireland.

The Owenriff rehabilitation plan and 2017 fish stock survey can both be downloaded from the IFI website. Afloat.ie also has more on IFI's stock management plan for Ireland's trout waters in 2018.

Published in Angling

#Angling - Sean Kyne, Minister of State with responsibility for the inland fisheries sector, has announced that Inland Fisheries Ireland will shortly commence fish stock management operations on the Owenriff catchment near Oughterard in Co Galway.

The measures to protect and restore trout stocks, which have been impacted by recent introductions of pike to the catchment, were promised last November upon the development by IFI of a specific stock management plan.

“The Owenriff catchment is one of the most important spawning and nursery tributaries of Lough Corrib, our most renowned wild trout fishery,” said Minister Kyne as he made the announcement today (Monday 29 January).

“Previous scientific studies have shown it contributed 15% of the wild trout found in Lough Corrib, and each year thousands of wild trout and salmon migrate upstream into the Owenriff to spawn.

“I am committed to protecting and rehabilitating the system and welcome IFI’s stock management plan which I have asked to be implemented immediately.”

IFI will be commencing a focused and intensive effort aimed at reducing the numbers of pike in the Owenriff catchment over the coming year.

While pike cannot be completely eradicated, the project will reduce numbers to a level where they are not impacting significantly on salmonid stocks.

It is expected that ongoing maintenance operations will be required in future years to help maintain the trout population.

Minister Kyne also emphasised that, in tandem with the stock management plan, IFI is also preparing an Owenriff Fish Population Rehabilitation Plan which aims to ensure trout stocks and habitats are restored and protected, thereby providing the best opportunities for a successful trout population. The plan will be available shortly.

Survey results are currently being compiled and will be available from the IFI website. Further information on the stock management plan is available HERE.

Published in Angling

For all you need on the Marine Environment - covering the latest news and updates on marine science and wildlife, weather and climate, power from the sea and Ireland's coastal regions and communities - the place to be is Afloat.ie.

Coastal Notes

The Coastal Notes category covers a broad range of stories, events and developments that have an impact on Ireland's coastal regions and communities, whose lives and livelihoods are directly linked with the sea and Ireland's coastal waters.

Topics covered in Coastal Notes can be as varied as the rare finding of sea-life creatures, an historic shipwreck with secrets to tell, or even a trawler's net caught hauling much more than just fish.

Other angles focusing the attention of Coastal Notes are Ireland's maritime museums, which are of national importance to maintaining access and knowledge of our nautical heritage, and those who harvest the sea using small boats based in harbours where infrastructure and safety pose an issue, plying their trade along the rugged wild western seaboard.

Coastal Notes tells the stories that are arguably as varied as the environment they come from, and which shape people's interaction with the natural world and our relationship with the sea.

Marine Wildlife

One of the greatest memories of any day spent boating around the Irish coast is an encounter with Marine Wildlife. It's a thrill for young and old to witness seabirds, seals, dolphins and whales right there in their own habitat. And as boaters fortunate enough to have experienced it will testify, even spotting a distant dorsal fin can be the highlight of any day afloat. Was that a porpoise? Was it a whale? No matter how brief the glimpse, it's a privilege to share the seas with Irish marine wildlife.

Thanks to our location in the North Atlantic, there appears to be no shortage of marine life to observe. From whales to dolphins, seals, sharks and other ocean animals, the Marine Wildlife category documents the most interesting accounts around our shores. And we're keen to receive your observations, your photos, links and video clips, too!

Also valuable is the unique perspective of all those who go afloat, from coastal sailing to sea angling to inshore kayaking to offshore yacht racing, as what they encounter can be of great importance to organisations such as the Irish Whale and Dolphin Group (IWDG). Thanks to their work we now know we share the seas with dozens of species who also call Ireland home. But as impressive as the list is, the experts believe there are still gaps in our knowledge. Next time you are out on the ocean waves, keep a sharp look out!

Weather

As an island in the North Atlantic, Ireland's fate is decided by Weather more so than many other European countries. When storm-force winds race across the Irish Sea, ferry and shipping services are cut off, disrupting our economy. When swollen waves crash on our shores, communities are flooded and fishermen brace for impact - both to their vessels and to their livelihoods.

Keeping abreast of the weather, therefore, is as important to leisure cruisers and fishing crews alike - for whom a small craft warning can mean the difference between life and death - as it is to the communities lining the coast, where timely weather alerts can help protect homes and lives.

Weather affects us all, and Afloat.ie will keep you informed on the hows and the whys.

Marine Science

Perhaps it's the work of the Irish research vessels RV Celtic Explorer and RV Celtic Voyager out in the Atlantic Ocean that best highlights the essential nature of Marine Science for the future growth of Ireland's emerging 'blue economy'.

From marine research to development and sustainable management, Ireland is developing a strong and well-deserved reputation as an emerging centre of excellence. Whether it's Wavebob ocean energy technology to aquaculture to weather buoys and oil exploration, the Marine Science category documents the work of Irish marine scientists and researchers and how they have secured prominent roles in many European and international marine science bodies.

Power From The Sea

The message from the experts is clear: offshore wind and wave energy is the future. And as Ireland looks towards the potential of the renewable energy sector, generating Power From The Sea will become a greater priority in the State's 'blue growth' strategy.

Developments and activities in existing and planned projects in the pipeline from the wind and wave renewables sector, and those of the energy exploration industry, point to the future of energy requirements for the whole world, not just in Ireland. And that's not to mention the supplementary industries that sea power projects can support in coastal communities.

Irish ports are already in a good position to capitalise on investments in offshore renewable energy services. And Power From The Sea can even be good for marine wildlife if done properly.

Aside from the green sector, our coastal waters also hold a wealth of oil and gas resources that numerous prospectors are hoping to exploit, even if people in coastal and island areas are as yet unsure of the potential benefits or pitfalls for their communities.

Changing Ocean Climate

Our ocean and climate are inextricably linked - the ocean plays a crucial role in the global climate system in a number of ways. These include absorbing excess heat from the atmosphere and absorbing 30 per cent of the carbon dioxide added to the atmosphere by human activity. But our marine ecosystems are coming under increasing pressure due to climate change.

The Marine Institute, with its national and international partners, works to observe and understand how our ocean is changing and analyses, models and projects the impacts of our changing oceans. Advice and forecasting projections of our changing oceans and climate are essential to create effective policies and management decisions to safeguard our ocean.

Dr Paul Connolly, CEO of the Marine Institute, said, “Our ocean is fundamental to life on earth and affects so many facets of our everyday activities. One of the greatest challenges we face as a society is that of our changing climate. The strong international collaborations that the Marine Institute has built up over decades facilitates a shared focusing on our changing ocean climate and developing new and enhanced ways of monitoring it and tracking changes over time.

“Our knowledge and services help us to observe these patterns of change and identify the steps to safeguard our marine ecosystems for future generations.”

The Marine Institute’s annual ocean climate research survey, which has been running since 2004, facilitates long term monitoring of the deep water environment to the west of Ireland. This repeat survey, which takes place on board RV Celtic Explorer, enables scientists to establish baseline oceanic conditions in Irish waters that can be used as a benchmark for future changes.

Scientists collect data on temperature, salinity, water currents, oxygen and carbon dioxide in the Atlantic Ocean. This high quality oceanographic data contributes to the Atlantic Ocean Observing System. Physical oceanographic data from the survey is submitted to the International Council for the Exploration of the Seas (ICES) and, in addition, the survey contributes to national research such as the VOCAB ocean acidification and biogeochemistry project, the ‘Clean Atlantic’ project on marine litter and the A4 marine climate change project.

Dr Caroline Cusack, who co-ordinates scientific activities on board the RV Celtic Explorer for the annual survey, said, “The generation of long-term series to monitor ocean climate is vital to allow us understand the likely impact of future changes in ocean climate on ecosystems and other marine resources.”

Other activities during the survey in 2019 included the deployment of oceanographic gliders, two Argo floats (Ireland’s contribution to EuroArgo) and four surface drifters (Interreg Atlantic Area Clean Atlantic project). The new Argo floats have the capacity to measure dissolved ocean and biogeochemical parameters from the ocean surface down to a depth of 2,000 metres continuously for up to four years, providing important information as to the health of our oceans.

During the 2019 survey, the RV Celtic Explorer retrieved a string of oceanographic sensors from the deep ocean at an adjacent subsurface moored station and deployed a replacement M6 weather buoy, as part of the Irish Marine Data Buoy Observation Network (IMDBON).

Funded by the Department of Agriculture, Food and the Marine, the IMDBON is managed by the Marine Institute in collaboration with Met Éireann and is designed to improve weather forecasts and safety at sea around Ireland. The data buoys have instruments which collect weather and ocean data including wind speed and direction, pressure, air and sea surface temperature and wave statistics. This data provides vital information for weather forecasts, shipping bulletins, gale and swell warnings as well as data for general public information and research.

“It is only in the last 20 years, meteorologists and climatologists have really began to understood the pivotal role the ocean plays in determining our climate and weather,” said Evelyn Cusack, Head of Forecasting at Met Éireann. “The real-time information provided by the Irish data buoy network is particularly important for our mariners and rescue services. The M6 data buoy in the Atlantic provides vital information on swell waves generated by Atlantic storms. Even though the weather and winds may be calm around our shores, there could be some very high swells coming in from Atlantic storms.”