Science must finally become the foundation of our marine policies

DISCLAIMER: All opinions in this column reflect the views of the author(s), not of EURACTIV Media network.

Blue-fin tuna harvest in Eastern Mediterranean, Turkey. Over a third of fish stocks globally are overfished, a trend which has been worsening for decades, writes Antonia Leroy. [zaferkizilkaya / Shutterstock]

2021 marks the start of the UN Decade on Ocean Science – a chance to move away from past mistakes where EU decisions were not always made based on the best-available science or even went against scientific advice, writes Antonia Leroy.

Dr Antonia Leroy is the head of ocean policy at the WWF European Policy Office.

Scientific understanding of the world around us is essential. It allows us to grasp the impacts of human activities, to inform our decisions about how to best preserve our natural world and its ecosystems – of which, we are a part.

We know how crucial scientific advice and evidence are for informing our relationships with our seas.

Which chemicals are toxic to wildlife and must be kept out of the water? How many turtles, dolphins and whales are accidentally caught in fishing nets every year, and how is this affecting their populations? What will the environmental impact of constructing a new port facility be? How many tonnes of fish can we catch within sustainable limits that allow stocks to recover?

The bigger picture

Globally, our ocean and the marine resources that hundreds of millions of people depend on are in trouble. Overfishing, pollution, shipping and coastal development are just some of the pressures which are having measurable impacts on the entirety of our ocean, from shallow waters to the deep sea.

Climate change will increasingly interact with these stressors – sea levels are already rising and waters are becoming warmer, more acidic and losing oxygen.

With over a third of fish stocks overfished, in a trend which has been worsening for decades, the threat to fisheries industries and coastal communities worldwide is unprecedented: under a no mitigation, high emissions scenario, marine invertebrates, fishes and non-fish vertebrates are forecast to drop to 15% of 1986-2005 measures by the end of this century.

Our home waters

It is therefore incredibly disappointing to see the EU say one thing in response to this kind of evidence and then do another. For example, in blatant violation of the Common Fisheries Policy’s legally-binding objective to end overfishing by 2020, about a third of the quotas for annual seafood catches set by EU Fisheries Ministers in December were higher than scientifically advised.

Commissioner Sinkevičius has himself expressed disappointment that “the ministers were not ready to fully take into account the scientific advice and agree on more ambitious effort reductions that would have allowed us to restore the fish stocks to sustainable levels”.

Beyond fishing, European seas are poised to become increasingly busy places for maritime transport, increasing the risks to marine habitats and species of collisions, as well as damage from anchors and pollution.

This is out of step with the need to tackle the decline of marine biodiversity. Less than three months remain for member states to submit their national plans for the sustainable use of their seas (marine spatial plans) to the European Commission, but the likelihood is that many countries will miss the deadline.

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Looking ahead

Over the next 10 years, which the UN has named its ‘Decade on Ocean Science’, the EU will strive to deliver on its commitment to the UN 2030 Agenda for Sustainable Development – one goal of which, Goal 14, is dedicated to our ocean.

Over the same time period, the EU will be implementing its 2030 Biodiversity Strategy, which aims at effectively protecting at least 30% of the EU sea space, including 10% under strict protection, while introducing a Nature Restoration Plan that will deliver healthier marine ecosystems.

As the EU works to fulfil these commitments, it must pay heed to the Decade’s initiative and strive to improve its scientific understanding of the place on Earth that is responsible for every second breath we take and provides each EU citizen with nearly 27 kilograms of the food they eat every year. It’s worth remembering that we still know more about the surface of the moon than we do about our ocean.

As our seas open up to new economic prospects like offshore wind and farming of sea flora, robust scientific exploration of these activities is essential to gain a fuller understanding of the short- and long-term environmental effects of such maritime industries, and thus mitigate the impact they have.

Nevertheless, there are currently few instances where the cause of oceanic decline and potential solutions remain uncertain. Investments (political, financial and societal) should be urgently directed towards proven solutions and existing technologies, compliance with data collection systems, and effective policies to help mitigate the climate crisis and restore biodiversity.

Where there is insufficient data, policy decisions must not be delayed; rather, decision makers must adopt a precautionary approach to ensure that human activities do not harm the marine life and resources on which we all depend.

The evidence is already in: the repercussions of such decisions have rippling effects across all sectors of life, industries and human generations. Conversely, scientific research must better reflect that humans are part of ecosystems and work to break down silos, fully embracing the socio-economic dimensions of ocean management decisions.

For instance, the lack of gender-disaggregated data in fisheries-related activities remains a major constraint to improving gender equity and equality in the sector. Hopefully, the Decade’s call for increased interdisciplinary marine research and dialogues will drive such an integrated approach to maritime policies going forward.

At a time when we must meet objectives set on both climate and biodiversity issues, science is needed more than ever to help us agree effective and ambitious policies, tools and practices that help secure a health balance between people and planet.

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