Renovating coastal structures, such as breakwaters, groynes, artificial reefs, quays and sea walls, can be destructive to Marine and Coastal as it encourages opportunistic and invasive species, according to recent research. Repairs can be particularly damaging if conducted in spring or summer, so repair schedules should be recognised in marine planning strategies to minimise negative ecological effects, say the researchers.

Between 10 and 50% of marine species and ecosystems are recovering from population declines and degradation, according to recent research, which identified five strategies for successful recoveries. Recoveries are often driven by a combination of factors, which include restricting exploitation, better protection of vulnerable habitats and greater political support and local involvement with conservation.

A new study of pollutants in Mediterranean coastal waters assesses the risks posed by difficult-to-detect chemicals present at low concentrations. Coastal monitoring programmes may be required to control discharges of some of these pollutants, which, at current levels, could be harmful to sensitive marine creatures.

New research has shed light on how fish respond to marine protected areas (MPAs). It suggests that seascape structure ??? the range of sea depths and habitat types included inside and outside the MPA ??? has a larger influence on changes in the abundance of fish than protection itself.

Researchers have discovered high levels of plastic particles and fibres, as well as black carbon (BC), which is formed by the incomplete burning of fossil fuels, in the waters of the Jade Bay, an inshore basin off the coast of Germany in the Southern North Sea. The concentration of suspended particles are of concern because they have the potential to be ingested by fish and other marine life, and enter the food chain.

Marine litter is a major issue in deep sea ecosystems in the Mediterranean Sea, new research confirms. A recent study shows that the total weight of litter found in these sensitive areas often equals, and even exceeds, that of the animals that live there. This work can provide a baseline for assessments of the impact of deep sea marine litter and to inform future policy reforms, the researchers suggest.

International agreements to reduce plastic use are needed to address plastic litter in the marine environment, as well as increased public awareness of the problem, according to scientists at a workshop on the EU Marine Strategy Framework Directive held in Italy in 2013. The issues discussed at the workshop have been summarised in a recent research paper.

The world’s marine ecosystems are at risk of sudden and damaging changes. The authors of a recent study say that co-ordinated management of the many drivers of marine changes, such as overfishing and pollution, is needed across international, national and local scales to help avoid the ‘regime shifts’ that affect ecosystem services and human wellbeing.

Marine Protected Areas should be managed as integrated networks rather than isolated units because of the high degree of exchange between them, a new study suggests. The researchers found that the large majority of sea bream (Sparidae) and wrasse (Labridae) fish spawned in MPA study sites in the Mediterranean Sea were transported via currents to other MPAs and unprotected areas, highlighting their interconnected nature.

Fish farms, and other forms of aquaculture, are seen as a potential solution to meeting increasing global demand for seafood. However, according to recent research, they must reduce their reliance on wild fish for animal feed if current production levels from both aquaculture and wild fisheries are to be maintained.

A pan-European survey has revealed the public’s awareness, concerns and priorities about human impacts on the oceans. The results show high levels of concern about marine pollution in particular, and that, generally, respondents were most concerned about the issues they felt most informed about. The study could help policymakers develop marine strategies that are more responsive to public preferences, its authors say.

The views of organisations and industries affected by marine protected areas (MPAs) have been gathered by a new survey. 36 organisations from the UK and France responded to the survey, which asked about the perceived socio-economic and environmental impacts of multiple-use MPAs. Environmental NGOs, managing agencies and research centres gave a largely positive response, while fishers’, shipping, and other industrial organisations perceived an overall negative impact on them. Gathering stakeholders’ views on MPAs may help improve socioeconomic outcomes through informing the planning and management of these marine areas, the researchers say.

Environmental impact studies which are conducted early on in the development of wave and tidal-power schemes allow the schemes' technology to be adapted to consider their impacts on marine ecosystems, according to a recent study which reports on a Swedish research wave park.

Tiny organisms called phytoplankton, which are crucial components of marine ecosystems, have been slowly disappearing over the last century, according to researchers. The decline is worrying because it may have profound effects on marine life, fisheries and carbon cycling. The study suggests the decline in phytoplankton could be linked to climate change.

The rapid decline of Arctic sea ice has had dramatic effects on seals, polar bears, whales and other marine mammals. Changes in distribution, body condition, reproduction and abundance are all consequences of reduced sea ice that may escalate over the coming decade, according to a recent analysis.

The world’s ocean ecosystems will suffer warming, increased acidity, low oxygen and reduced primary food supply as a result of rising CO2 and this is likely to have dramatic environmental and social impacts, a new study concludes. It predicts that the most vulnerable low-income countries, where 870 million people are dependent on marine ecosystems, would be affected if CO2 emissions are not tackled.

Marine biodiversity conservation in the north-east Atlantic needs a combination of more adaptable management strategies and international co-operation, a new study says. This is required to deal with a potential increase in marine conservation hotspots under climate change.

Plastic debris is a serious environmental concern, as a physical pollutant as well as a chemical pollutant when it breaks down in the marine environment. A new study has now shown that plastics can also concentrate other pollutants, with significantly higher concentrations of toxic pollutants adhering to soft, rubbery plastics, rather than hard, glassy plastics.

Mussels exposed to high levels of microplastic pollution display signs of stress, new research has shown. However, levels of exposure were higher than found in the wild and no effect on the energy reserves of either mussels or lugworms was observed in the lab. tests. The researchers caution that longer experiments may be needed to reveal microplastics' full effects.

A new study highlights the economic importance of coastal and marine areas and the urgent need to develop concrete methods for assessing their value. Researchers say the need is especially strong now as climate change's impacts could reduce the economic value of coastal and marine environments.

Marine litter not only causes environmental damage, but has significant economic costs for industry. A recent study has now estimated that marine litter in the Asia-Pacific region is likely to cost over US$1.26billion per year in damage to marine industries. Policy options for reducing this cost are explored.

Only three EU Member States – the UK, Germany and the Netherlands - have explicit legislation for monitoring the economic, social and environmental impacts of marine activities. This legislation embraces Maritime Spatial Planning (MSP), a promising tool to improve decision-making on the planning of human activities at sea.

There are adequate resources to implement the Marine Strategy Framework Directive (MSFD) in Europe, a recent study concludes. However, more clarity is needed on the roles of different institutions at EU, regional and national levels in implementing the Directive.

A pilot Marine Spatial Planning (MSP) project in the UK has found MSP to be a useful approach in managing marine waters sustainably. Sharing the knowledge and experiences gained in developing the Shetland Islands’ Marine Spatial Plan (SMSP) can help other authorities in the process of developing similar plans, says the project team.

The Irish public are sceptical of government and industry’s ability to manage the marine economy, finds a survey. However, they place a large amount of trust in scientists. The research also indicates that people living in Ireland have a reasonable level of knowledge of the importance of different marine ecosystem services.

Plans for new Marine Protected Areas (MPAs) need to consider social impacts alongside economic and environmental impacts, according to a recent study, which found that an MPA in the UK has increased some tensions within its local community. The researchers suggest that collaborative management could also help increase support for MPAs and reduce stakeholder conflict.

More than 200 pieces of English and EU-wide marine environmental legislation have been analysed in a recent review. While complex, the legislation adequately covered all areas of the marine environment, the authors conclude. However, there is opportunity to remove overlap and conflicts between different legislation and improve cross-border co-operation.

Marine protected areas (MPAs) are widely used to safeguard marine ecosystems across Europe. This study investigated the effect of a partially protected area (PPA) off the coast of Norway on a population of Atlantic cod (Gadus morhua). The PPA reduced the number of deaths due to fishing, increased survival and stimulated movement to surrounding areas. The authors say that preventing fishing altogether would increase survival even further and recommend no-take zones in areas where populations are severely reduced.

Marine protected areas (MPAs) have well-reported ecological benefits, but may also have important socioeconomic effects on local communities. Existing methods to assess these effects have been hampered by a number of limitations. This paper describes a new framework to monitor and assess the socioeconomic effects of MPAs, which overcomes many of these limitations to provide greater value for decision makers.

The announcement of a new no-take fishing zone in the Pacific led to a 130% increase in fishing activity ahead of its implementation, satellite data reveal. Although fishing activity dropped to zero once the marine protected area (MPA) came into effect just over a year later, the study warns that the pre-emptive short-term surge in fishing could have caused long-term ecological damage.

Recent work in the coastal Mediterranean waters of the ‘Comunidad Valencia’ in Eastern Spain confirms that wastewater treatment plants (WWTPs) are a significant source of pollutants that need monitoring under the Water Framework Directive (WFD) and Priority Substances Directive. However, these substances also directly enter coastal waters from mixed urban, industrial and agricultural sources, creating a challenge for the development of control measures.

The importance of addressing eutrophication to improve the ecological health of coastal and marine waters has been identified in the EU Marine Strategy Framework Directive1. A new study discusses possible methods for assessing and monitoring eutrophication, including which indicators to monitor.

Mediterranean Marine Protected Areas (MPAs) provide important habitats for the yelkouan shearwater, a species of conservation concern, new research concludes. The study examined the behaviour of the birds at sea and found that they used MPAs extensively as foraging grounds.

The English Channel (La Manche) is one of the world’s busiest sea areas, and management of it is a challenging task. This study reviews governance across the Channel, finding poor integration between countries, sectors, policies and research. The study also considers management in terms of the ecosystem approach and suggests that linking research between the UK and France could be key to improving marine governance.

New EU-supported research in the Mediterranean Sea has assessed the impact of fish-farming on seafloor ecosystems. Results indicate that impacts are only apparent in habitats with no vegetation, but the researchers suggest that habitats with vegetation seagrass could be masking the effects.

The urbanisation of coastal areas and introduction of man-made structures, such as jetties and seawalls, are changing marine environments. A new analysis highlights the impacts of these changes on marine plants and animals and suggests options to manage the detrimental effects.

A global team of marine biologists have recently completed a Census of Marine Life, which contributes to our basic understanding of marine ecosystems. Among its findings - marine biodiversity in the Baltic and Mediterranean are among the most threatened globally.

Microplastic pollution impairs the heath of the marine worms that help maintain sediments for other creatures, new research suggests. This study shows that the energy reserves of lugworms living in sediment contaminated with microplastic particles were reduced by up to 50%.

Offshore renewable energy sites may provide new 'stepping stone' habitats for marine species, a recent study suggests. They could allow some species to spread beyond their present range and help vulnerable creatures survive in the face of climate change. However, they may also allow harmful invasive species to spread, the researchers warn, and the effects of such projects must be assessed by examining their impacts on the ecosystem as a whole.

Marine protected areas (MPAs) in which fishing is prohibited contain substantially more fish, including commercially valuable species, than either partially protected or unenforced MPAs, according to a recent survey of rocky reef fish in the Mediterranean Sea. This suggests that MPAs need to be highly protected to offer the best chance of recovery for fish stocks, say the researchers.

Marine Protected Areas should be managed as integrated networks rather than isolated units because of the high degree of exchange between them, a new study suggests. The researchers found that the large majority of sea bream (Sparidae) and wrasse (Labridae) fish spawned in MPA study sites in the Mediterranean Sea were transported via currents to other MPAs and unprotected areas, highlighting their interconnected nature.

Mathematical models created to help design marine reserves have tended to focus on fish species where larvae are highly mobile but adults occupy relatively small areas. However, new research has extended these models to include fish species with different life histories, such as groupers and flounders, showing that they also benefit substantially from reserve protection.

Discarding – returning unwanted catches to the sea – is seen as wasteful, but banning the practice would remove an important food source for many marine organisms. This study modelled the effects of gradually reducing and abruptly banning discards using data from a protected bay in Australia. The researchers recommend gradual reduction of discards in order to maintain ecosystem stability.

Assessing threats to biodiversity is necessary for effective spatial planning and balancing sustainable development with conservation. This study details a fine-scale assessment of the effect of a range of threats to coastline habitats within a Marine Protected Area (MPA) in the Mediterranean Sea. The study provides an example of how local-scale assessments can contribute to national conservation policy.

The importance of seagrass meadows in supporting fisheries has been highlighted by a new study in San Simón Bay, a Natura 2000 site in Spain. The research also demonstrates the benefits of stakeholder involvement in developing management plans to balance conservation with the use of natural resources.

Rare earth elements (REEs) are used increasingly often in innovative technologies, causing these elements to enter the natural environment. They can be sourced via deep-sea mining, raising concerns about marine exposure to mining processes and waste products. This study examined how two REEs, lanthanum and yttrium, affected and stressed marine ecosystems, using young marine mussels (Mytilus galloprovincialis) as indicators of water quality. The researchers determine a parameter known as the ‘predicted no effect concentration’ (PNEC) for La and Y — the maximum environmental level of each of the two elements at which no effect is seen on the most sensitive organisms and which is, therefore, deemed safe for the environment.

Commercial bottom trawling, the technique of pulling fishing gear across the seabed to catch fish and other seafood, releases pollutants trapped in the seabed, which can negatively affect local marine life and ecosystems. Recent findings from a Norwegian fjord show how mussels can take up high levels of contaminants released by trawling, with important health implications for consumers.

Endocrine disrupting chemicals (EDCs) can interfere with the hormonal systems of both humans and wildlife. New research quantifying EDCs in marine environments in Greece found concentrations which present significant risks to sediment-dwelling organisms.

Leakage of radioactive material from the wreck of the nuclear submarine K-159 in the Barents Sea could increase levels of radioactivity in local populations of cod by a hundred times, new research suggests. However, this level remains well below ‘safe’ standards set by the Norwegian government.

New research has provided the first conclusive evidence that microplastics ingested by marine wildlife can transfer toxic pollutants to their tissues. The researchers studied lugworms fed on PVC particles contaminated with either widespread marine pollutants or plastic additives and found that these 'earthworms of the sea' absorbed the chemicals into their gut tissue, which reduced their ability to perform essential functions.