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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: Marine Species

Extinction threatens 48 species living in the Irish marine environment, including fish, crustaceans, shellfish and invertebrates, according to the new National Biodiversity Action Plan.

“It is imperative that we arrest these declines and start the process of regeneration,” the authors of the action plan state.

The fourth national biodiversity action plan was published yesterday by Minister for Heritage Malcolm Noonan.

The new plan has been placed on a statutory footing for the first time, and it also commits to enacting and implementing comprehensive legislation on marine protected areas.

The plan notes that in Ireland, almost a third of EU-protected species and 85% of EU-protected habitats are in unfavourable status.

It says that over half of native Irish plant species have declined in the last 20 years, and 30% of semi-natural grasslands have been lost in the past 10 years.

Over 20% of breeding and 52% of key wintering bird species are reported to have short-term declining trends, it says.

Many of the issues it identifies were addressed in the report by the Citizens’ Assembly on Biodiversity Loss.

The new biodiversity action plan seeks to address a number of its key recommendations.

Its 194 actions across sea and land include commitments to deliver on obligations to conserve the most precious habitats and species, and “strategically target” efforts on invasive species.

The Fair Seas coalition of environmental groups welcomed its publication, but warned that it will only work if “every single measure is acted upon promptly”.

Published in Marine Wildlife

A Pacific expedition has discovered over 30 “potentially new” marine species ranging from sea cucumbers to starfish.

The new species were collected by a team from Britain’s Natural History Museum, using a remotely operated vehicle (ROV) in the abyssal plans of the Clarion-Clipperton zone of the central Pacific – an area rich in minerals and the focus of deep sea mining.

Lead author of the study, Dr Guadalupe Bribiesca-Contreras, said the megafauna specimens had previously only been studied from seabed images.

Peniagone vitrea is one of the oldest deep sea species known, being discovered by the Challenger expedition in the 1870s. Image © DeepCCZ expedition, Gordon & Betty Moore Foundation & NOAA.Peniagone vitrea is one of the oldest deep sea species known, being discovered by the Challenger expedition in the 1870s. Image © DeepCCZ expedition, Gordon & Betty Moore Foundation & NOAA.

“Without the specimens and the DNA data they hold, we cannot properly identify the animals and understand how many different species there are,” he said.

Of some 55 specimens recovered, 48 were different species. Dr Adrian Glover of the Natural History Museum’s Deep Sea Research Group said that it was known that “small millimetre-sized animals called macrofauna are extremely biodiverse in the abyss”.

“However, we have never really had much information on the larger animals we call megafauna, as so few samples have been collected,” Dr Glover said.

“ This study is the first to suggest that diversity may be very high in these groups as well,” he said.

The researchers say the findings add further evidence that the majority of deep sea life is yet to be discovered.

This unidentified Zoroaster starfish is one of the species that may be new to science. Image © DeepCCZ expedition, Gordon & Betty Moore Foundation & NOAA.This unidentified Zoroaster starfish is one of the species that may be new to science. Image © DeepCCZ expedition, Gordon & Betty Moore Foundation & NOAA.

The Clarion-Clipperton Zone covers over five million square kilometres in the Pacific Ocean, lying between Hawaii and Mexico, and is around 5,500 metres at its deepest – nearly as deep as Mount Kilimanjaro is high.

Large portions of its flat abyssal plans are covered in polymetallic nodules – mineral lumps the size of potatoes which are rich in key metals such as cobalt, nickel, manganese and copper. It has been estimated that there is more cobalt and nickel in polymetallic nodules than can be found on land.

Four specimens of Psychronaetes sea cucumber were collected, and are thought to represent a new species. Image © DeepCCZ expedition, Gordon & Betty Moore Foundation & NOAA.Four specimens of Psychronaetes sea cucumber were collected, and are thought to represent a new species. Image © DeepCCZ expedition, Gordon & Betty Moore Foundation & NOAA.

These minerals are required for wind turbines, electric cars and other net-zero energy technologies, so there is a push for seabed mining to pave the way for a green revolution.

However, opponents worry that seabed mining could cause irreparable damage to seafloor ecosystems.

The CCZ is a focus of scientific research to evaluate the impacts of seabed mining on this environment, and the study examined three of the protected Areas of Particular Environmental Interest.

The study was funded with grants from the Gordon and Betty Moore Foundation, the National Oceanic and Atmospheric Administration, and the leadership of Prof Emeritus Craig Smith of the University of Hawaii.'

The paper in Zookeys is available here

Published in Marine Science
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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.”