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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: Salmon

The first catch and release salmon of 2020 has been caught on the River Drowes in Co. Leitrim according to Inland Fisheries Ireland. Nash Mc Daid, of Ballybofey, Donegal landed the first catch and release salmon at the “point of the meadow” on the River Drowes at 2.45pm, Friday the 14th of February. The salmon, which weighed approximately 12 pounds, was caught on a Red Flying C before being released into the water. 

In 2019, the first salmon was recorded on the Lackagh River in Donegal on the 1st of January and in 2018, the first salmon was recorded on the River Drowes in Leitrim on the 30th of January. This year the first salmon caught was in Waterville in Kerry on January 25th. 

Inland Fisheries Ireland awarded €250 prize money to the angler for the first catch and release salmon of the New Year. The prize was only eligible for the release of the first salmon which was handled correctly and verified by Fisheries Officers.

Dr Ciaran Byrne, CEO of Inland Fisheries Ireland said: “I would like to congratulate Nash Mc Daid, on the first catch and release salmon of 2020. I would urge anglers to step up their conservation efforts and engage in catch & release angling in 2020. Last year we celebrated the International Year of the Salmon and its main aim was to raise awareness of the many challenges facing salmon stocks across the Northern hemisphere. 

Salmon populations have plummeted in recent years with the number of salmon returning to Irish shores decreasing by over 70 per cent, which is very concerning. I would like to take this opportunity to encourage all anglers in 2020 to ensure their own personal contribution to the conservation of salmon by practising catch and release fishing. Inland Fisheries Ireland will continue to support salmon conservation through research, protection, habitat conservation and development of our precious resource.” 

The River Drowes is open for fishing during the 2020 season. The regulations for the management of the wild salmon and sea trout fishery for 2020 including the list of open, catch and release and closed rivers can be found at: https://www.fisheriesireland.ie/Salmon-Regulations/salmon-regulations.html#tab2.

Inland Fisheries Ireland is also inviting the public to help protect and conserve the fisheries resource during the year by reporting incidents to its confidential hotline number 1890 34 74 24 or 1890 FISH 24. The phone line is designed to encourage the reporting of incidents of illegal fishing, water pollution and invasive species.

Published in Angling
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The route taken by young salmon (smolts) leaving the east coast of Ireland has been discovered for the first time. Inland Fisheries Ireland and Northern Ireland’s Agri-Food and Biosciences Institute have revealed findings which show young salmon leaving rivers on the eastern coast travelling northwards to leave the Irish Sea, rather than south and west to join salmon on the western coast. The research was carried out as part of the COMPASS project and funded by the EU European Regional Development Fund's Interreg VA programme.

The new evidence was established after researchers tagged salmon smolts with coded transmitting acoustic tags in the Castletown and Boyne rivers in County Louth during the spring of this year. Three of these tagged salmon were picked up on listening devices in the coastal seas as they travelled northwards out of the Irish Sea towards the Atlantic Ocean.

One of the smolts was recorded in Scottish waters, some 80 kilometres north of the Inishowen Peninsula. This smolt had travelled an estimated 250 kilometres in just over a month, one of the longest distances recorded for a salmon tracked at sea en route to its feeding grounds in the North Atlantic. Two more salmon smolts were tracked as far as receivers located off the Northern Ireland coast, further confirming the northward migration of the fish through the Irish Sea. 

A salmon smoltA salmon smolt

Until now, it was unknown if juvenile salmon leaving Ireland’s east coast rivers headed around the North or South coasts to get to their oceanic feeding grounds. These first three tracked fish took a northward route from rivers on the east coast to exit the Irish Sea. These salmon also moved offshore quickly, behaving very differently from sea trout, which remained closer to their spawning rivers and swam closer to the coast and river mouths.

The tagging work was carried out by scientists from Inland Fisheries Ireland (Dr James Barry) and AFBI (Dr Richard Kennedy) who tagged and analysed the movements of 130 salmon smolts as they left their rivers of birth in the spring of 2019. This work was supported by a local angling clubs, including The Dundalk and District Brown trout and Salmon Anglers, who helped to install fish traps which enabled the tagging and release of fish. A network of acoustic receivers were moored to the seabed along the coast from Drogheda to the northeast coast by researchers from IFI and AFBI, to track the tiny acoustic transmitters in the salmon as they migrated from the rivers to the open ocean.

This research is just one element of the COMPASS (Collaborative Oceanography and Monitoring for Protected Areas and Species) project, a transnational initiative which focuses on the coastal seas between Ireland and western Scotland. The project aims to deliver improved cross border environmental monitoring programmes, including research to support highly mobile protected species such as marine mammals, salmon and sea trout. This particular research package is investigating the success of wild salmon and sea trout as they migrate from river to sea, and examining where they travel to and how many of them survive before returning to Ireland to reproduce.

Commenting on the findings, Dr William Roche, Senior Research Officer at Inland Fisheries Ireland said: “As salmon populations are in decline across the northern hemisphere, we urgently need to establish their migration journey and identify any issues which may be negatively impacting survival along that route. This research marks an exciting milestone and it will play a critical role in supporting marine conservation efforts.”

Dr Cathal Gallagher, Head of Research and Development at Inland Fisheries Ireland said: “Salmon hatch in their native river, spend their juvenile life feeding in freshwater and prepare for their long sea migration before returning as adults, usually one year later to mate in their native river. Genetic analysis has shown this loyalty to their native river which can be traced back to the Ice Age.

The COMPASS project has for the first time identified the northward migration route of young salmon from some of Ireland’s east coast rivers, as they start their epic and dangerous journey to their feeding grounds in the North Atlantic Sea. Research results like these offer insights which will enable policymakers and managers to focus actions aimed at the protection and conservation of Ireland’s iconic salmon stocks, which have suffered considerable decline over the past decades. Inland Fisheries Ireland will continue in its research efforts, nationally and internationally, to support the conservation of our salmon stocks which are threatened by current and increasing threats posed by a changing environment.”

Dr Robert Rosell, Principal Scientific Officer for freshwater fish at AFBI said: These observations are an exciting first for long-distance tracking of individual young salmon at sea. We are now in a position to carry out follow up studies to find out much more. These results will optimise the placement of further detection equipment and add information, for instance on survival rates, for further releases of tagged fish. Now that we know where to look, advancing technology and longer battery life tags may soon give us not just the outward journey, but also detail of the routes taken by adult fish coming back to spawn.

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Licences for salmon and sea trout angling for the 2020 season can now be purchased online along with log books and gill tags, Inland Fisheries Ireland (IFI) has announced.

Licence fees remain the same across all classes including those for juvenile anglers. An annual licence covering all districts costs €100 (€10 for juveniles under 18 years), while licences for single districts are €56 for the year, €40 for 21 days and €20 for a single day. Licences for the Foyle Area Extension are €80.

Anglers are legally required to be in possession of a licence when fishing for salmon or sea trout.

Licences should be purchased online by next Wednesday 18 of December to allow time for delivery before Christmas and the New Year. IFI cannot guarantee dispatch in advance of the holidays due to postage deadlines.

Online licences can also be acquired directly from your local IFI office or approved online licence sales distributors.

Angling licences other than online sales will be available to purchase in approved licence sales distributors from the end of December or early January.

IFI also reminds all salmon and sea trout anglers to return their 2019 angling logbook and unused gill tags as soon as possible, even if there is no catch recorded.

These returns will provide vital information regarding the status and management of our wild Atlantic salmon and sea trout stocks for the future.

Anglers are asked to use the business return envelope which was supplied at the time of license purchase. In the absence of the prepaid return envelope, anglers can return their completed logbook and unused tags to the IFI office address on their licence/logbook.

Published in Angling

Campaigners against salmon farms have raised concerns over the state of Irish wrasse stocks after it was confirmed the fish have been taken en masse to help clean lice from farmed salmon.

As Donegal News reports, a number of salmon farms in Donegal, Galway and other areas owned by Mowi — the former Marine Harvest — have between them moved in tonnes of wild wrasse, a known ‘cleaner fish’ that feeds on sea lice, over the past four years.

Responding to a Dáil debate question from Catherine Connolly TD this past summer, Marine Minister Michael Creed confirmed that “several special of cleaner fish are used in Ireland as a method of controlling sea lice”.

But there are fears that the mass withdrawal of wrasse and other such species from the wild could tip the balance of Ireland’s delicate marine ecosystem.

“The absence of wild wrasse in bays may result in stress and disease in other large species of fish which rely on wrasse to keep them clean of parasites,” said Billy Smyth, chair of Galway Bay Against Salmon Cages.

Donegal News has much more on the story HERE.

Published in Fishing

Collective work between scientists and the angling community for the survival of salmon in the cross-border catchments of Foyle and Carlingford was to the fore at the recent conference in Omagh hosted by the Loughs Agency.

Stark warnings over the decline of the species were heard along with presentations from the likes of Dr Diego Del Villar, who discussed the new SeaMonitor project that is currently studying the seas around Ireland, Northern Ireland and western Scotland, and will in time help produce a salmon management plan for the River Foyle.

The Loughs Agency says it will soon launch a public consultation to gauge the views of the public in managing the salmon fishery.

John McCartney, Loughs Agency director of conservation and protection, said: “We value the input and opinion of the public when reviewing our salmon management programme. I would encourage everyone take time to consider and respond to the questions.”

Published in Angling

The Loughs Agency is teaming up with the Foyle Association of Salmon and Trout Anglers (FASTA) to host an evening salmon conference in Omagh, Co Tyrone next month.

Our Foyle Salmon – The Upstream Battle at the Mellon Country Inn from 7pm on Wednesday 25 September will hear from speakers on a range of issues including the status of salmon in the River Foyle, current research, threats and steps that can be taken to sustain and protect the species.

This is a fully ticketed event; tickets are free and available through Eventbrite with a maximum of two tickets per transaction.

When registering for tickets you can also submit a question to the panel for the Q&A session at the conference.

Published in Angling

A small number of salmon are returning to Irish rivers with signs of bleeding and skin ulceration, according to Inland Fisheries Ireland. This follows reports of salmon also returning to Norway and Scotland with a red rash skin disease in recent months. Anglers and fishery owners are asked to report incidences of salmon with rash like symptom to Inland Fisheries Ireland to help determine the scale of the problem nationally.

Salmon first began appearing in Irish rivers with these symptoms in early June and by mid-June, there were reports of fish with ulceration in at least six rivers, both on the east and west coast of Ireland. The salmon who are affected show signs of bleeding, ulceration and haemorrhaging mainly along the area on the belly of the fish and on the head and the tail. Secondary fungal infection normally sets in and may result in death of the salmon.  

"Inland Fisheries Ireland appeals to anglers and fishery owners to report incidences of affected salmon"

Inland Fisheries Ireland is working with the Fish Health Unit in the Marine Institute to sample live salmon in affected rivers to determine the cause of the skin disease. Until the cause of the disease has been determined and the risk of spreading the disease established, affected salmon should not be removed from the water. Any anglers who capture salmon with these symptoms are advised to follow normal biosecurity procedures and disinfect tackle, waders and equipment. 

Dr Paddy Gargan, Senior Research Officer at Inland Fisheries Ireland said: “It is unclear at this time what is causing these symptoms. There is some evidence that the disease may become less frequent with rising water temperatures and the problem has been worst in multi-sea-winter fish entering rivers early in the year in Norway and Sweden. There is also a suggestion that the disease is related to a change in salmon diet but this has not yet been established. We are asking anglers and fishery owners to report any catches of salmon with these symptoms to us as soon as possible”.

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Sean Canney, Minister of State with responsibility for the inland fisheries resource, visited the River Erriff in Co Mayo recently to understand more about the current issues facing Ireland’s salmon.

Inland Fisheries Ireland (IFI) has designated the River Erriff, one of Ireland's premier salmon and sea trout fisheries, as the National Salmonid Index Catchment.

Salmon and sea trout migrating upstream in the Erriff must pass through fish counting and trapping facilities located at Aasleagh Falls, where the Erriff flows into Killary Harbour.

Since 1985, salmon and sea trout smolts and kelts migrating downstream pass through a trap located below Tawnyard Lough.

The facilities at this research station are used for a wide range of scientific research and monitoring activities on the salmonid populations and their migratory behaviour.

Minister Canney met with Dr Ciaran Byrne, CEO of Inland Fisheries Ireland, who outlined that fisheries managers and scientists have been concerned for a number of years about the declining numbers of salmon returning to the Irish coast — a key concern in this International Year of the Salmon.

In the mid-1970s, almost 1.7 million salmon were estimated to have returned to Ireland, compared to only some 250,000 today.

Salmon are a key indicator species and they tell us so much about the health of our aquatic environment, IFI says.

And the issue is not unique to Ireland, as populations over the entire southern part of the North East Atlantic — which includes France, Spain, England, Scotland and southern Iceland — have declined significantly in the past number of decades.

Following the visit, Minister Canney commented: “Salmon are an iconic fish species in Ireland. They have always had a special place in Irish culture, heritage and mythology with stories such as the ‘Salmon of Knowledge’ familiar to generations of our school children.

“While they are widely distributed throughout Irish river systems, with over 140 designated salmon rivers, the numbers of salmon returning to Irish rivers, in common with salmon rivers internationally, have shown a worrying decline in recent decades.

“Today they remain an important resource to many people, playing an invaluable ecological, social and cultural role in Ireland and across the Northern Hemisphere.

“International Year of the Salmon offers us an opportunity to start an important conversation around how we can protect, conserve and restore salmon populations in Irish and international waters and how we can inspire action.

“I am delighted to see the excellent research facility here in the Erriff. I am assured that the ongoing scientific research by IFI adds to our understanding of the issues facing salmon and will inform Ireland’s position as part of the EU delegation in discussions which will shortly take place at Nasco — the North Atlantic Salmon Conservation Organisation — on this important topic.”

Published in Angling

Anglers are needed as citizen scientists for a new National Salmon Scale Project, says Sean Canney TD, Minister of State with responsibility for the inland fisheries sector.

Minister Canney said: “As we celebrate International Year of the Salmon, this project will help researchers understand the challenges which salmon are facing today.

“The project, which has been initiated by Inland Fisheries Ireland, aims to collect vital information through scales taken from salmon and sea trout which are caught in Irish rivers and lakes and will contribute to international efforts to conserve wild salmon.”

Fish scales record the life history of a salmon, and one scale can reveal a lot about the lifestyle and behaviour of the fish.

Scales can tell scientists what age the fish is, how many winters it spent at sea, how many times it spawned, how slow or fast it grew, what it ate and how long it spent in the river before it went out to sea.

Scales can also reveal the general feeding area where the salmon travelled to in the ocean, whether it went to the Faroe Islands, the Norwegian Sea or all the way to West Greenland. Scales help scientists to understand the biology and ecology of Irish salmon and sea trout.

As part of the project, anglers are asked to take a scale sample from a salmon or sea trout by gently scraping and removing approximately 20 fish scales using a clean knife, then post their samples to Inland Fisheries Ireland (IFI) using the sample envelopes which will be made available to them.

Scales can be removed from both harvested and catch-and-release fish. Sampling of fish for release should be handled carefully and fish should be only briefly removed from the water with every effort made to avoid injury or stress while weight should be estimated.

Information from salmon scales is used in setting conservation limits for Irish rivers. Conservation limits for each river are set based on the proportion of salmon who have spent one winter at sea and those that have spent multiple winters at sea.

The conservation limit for a river represents the number of spawning salmon required to produce the next generation of salmon and this information helps inform angling regulations and management. Information from scales on multi-sea winter salmon entering rivers in spring is also important for managing individual river stocks.

Dr Paddy Gargan, senior research officer at IFI, said: “It is important to have anglers collecting scales as they can provide broad coverage across Ireland and collect scales throughout the fishing season.

“A scale resource which includes many different river systems in Ireland over several years is a great asset from a research perspective as it allows us to examine the factors affecting salmon survival at sea. We can compare how factors, such as climate change, are impacting survival by analysing today’s salmon scales alongside those from many decades ago.”

All scales collected through the National Salmon Scale Project will be added to the National Salmon Scale Archive which is managed by IFI.

The archive, which consists of a dedicated storage facility and associated database, currently holds 19,300 scale samples from a total of 38 rivers representing 152 sampling years. The National Salmon Scale Project aims to increase the scale resource available to scientists for ongoing and future research.

IFI’s head of research and development Dr Cathal Gallagher said: “Ultimately the National Salmon Scale Project will help inform future salmon management policies and activities.

“It is fitting therefore that we are launching this campaign during International Year of the Salmon which aims to raise awareness of what humans can do to ensure salmon and their habitats are conserved and restored against a backdrop of several environmental pressures. This project offers anglers a very tangible and practical way of playing an active role in salmon conservation.”

For more information on the National Salmon Scale Project, including how to take a sample safely and to request sample envelopes, visit the project webpage. To find out more about International Year of the Salmon visit YearOfTheSalmon.org.

Published in Angling

A new study shows low salmon survival leaving freshwater is an important factor in declining European salmon populations, according to early results from a project examining the early migration phase of salmon smolts (young salmon) from rivers across Europe. Leading salmon scientists from Denmark, Spain, Sweden, UK and Ireland are today attending an important meeting in Dublin, hosted by Inland Fisheries Ireland, to mark International Year of the Salmon. The scientists will discuss some of their new findings from the international SMOLTRACK project, the results of which reveal factors in the known decline of salmon stocks.

The SMOLTRACK Project, which is funded by the North Atlantic Salmon Conservation Organisation (NASCO) / EU, aims to help determine the survival rates of young salmon as they move from rivers into the marine environment. Work commenced in 2017 and early results show that survival during movement from rivers to the sea is lower than expected. While it was already accepted that salmon are impacted by a number of factors when they migrate at sea including the effects of climate change, limited feeding opportunities and sea lice-induced by fish farms, the low survival rate in river systems which is presenting in this research is a new development.

The low survival of smolts in some river systems could be attributed to changes in temperature and flow while predators have also been shown to impact on the numbers entering the sea. The survival of smolts varies by catchment and in a bad year, survival of smolts can be three times lower than in a good year. These results will be published in international journals on completion of the research. 

The international project sees scientists from each participating country tag salmon smolts with miniaturised acoustic and radio transmitter tags in rivers in their own country, and track their migration journey through the lower parts of rivers, estuaries and coastal areas. This study includes populations in Southern Europe which are most vulnerable to climate change. In Ireland, this work is being carried out in the River Erriff, Inland Fisheries Ireland’s National Salmonid Index Catchment (NSIC).

In addition to the activity in Ireland, tagging is being carried out on the River Bush (Northern Ireland), River Tamar (England), River Ulla and River Minho (Spain), River Göta and River Högvadsån (Sweden), River Skjern and River Storaa (Denmark). This information will help scientists to understand the survival rates of salmon smolts during their migrations under varying conditions ranging from cooler climates in Sweden to warmer climate in Spain. Already SMOLTRACK is providing new data on the initial migration of salmon smolts which will inform future management and conservation measures for this iconic species.

Dr William Roche, Senior Research Officer at Inland Fisheries Ireland said: “Understanding and comparing early marine survival of salmon in EU waters is a key output of this project in addition to providing data on smolt run timing and migration behaviour. The project has established a European-wide counting, tagging and tracking system to monitor smolts and will also contribute to understanding of the possible impacts of climate change.”

Dr Cathal Gallagher, Head of Research and Development at Inland Fisheries Ireland said: “We have seen a substantial reduction in the numbers of salmon returning to Irish shores in recent decades. This project is examining what is happening to our young salmon as they migrate to sea and what the international community needs to do to help salmon populations. While this research identifies issues in early mortality of salmon, this part of a salmon’s life cycle is where management actions can be targeted to support the future of these salmon stocks. International Year of the Salmon offers an opportunity to share knowledge across the Northern Hemisphere with a view to inspiring action and collaboration with a positive effect on salmon survival.”

International Year of the Salmon is a joint worldwide initiative of the North Atlantic Salmon Conservation Organisation (NASCO) and the North Pacific Anadromous Fish Commission (NPAFC) alongside other partners across the globe, creating an international framework for collaborative outreach and research. It is hoped that IYS will raise awareness of what humans can do to ensure salmon and their habitats are conserved and restored against a backdrop of several environmental factors.

For more information about the SMOLTRACK project, visit here

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Page 9 of 21

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.”