Ecology

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NATURE INDEX
24 September 2021

Coral conservation strikes a balance

Australia–Fiji collaboration matches community needs with reef protection.

Clare Watson

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Clare Watson

Clare Watson is a freelance writer in Wollongong, Australia.

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A spear fisherman catches reef fish, a cultural mainstay on Mali Island in Fiji.Credit: Juergen Freund/naturepl.com

Coral reefs are under threat, and so too are the livelihoods of more 500 million people who depend on them. Global climate change is causing longer and more frequent marine heatwaves, leading to widespread and repeated coral bleaching. Overfishing and pollution exacerbate the problem, adding pressure to these marine biodiversity hotspots that sustain coastal communities.Reef-management programmes that limit or prohibit fishing and other commercial activities are bound to be ineffective if local communities are not involved in their design and management, says Sangeeta Mangubhai, a coral-reef ecologist in Fiji. “If people haven’t been engaged in the management [of conservation strategies], they’re not as likely to understand what the rules are, or they might not comply with it,” she says. Initiatives that are designed to protect coral reefs without incorporating insights from local communities may also affect them in unintended ways, she adds.
Nature Index 2021 Science cities
In collaboration with environmental social scientist, Georgina Gurney, Mangubhai is identifying the conditions that support both conservation outcomes and the wellbeing of coastal communities who often have cultural practices and spiritual ties to the sea. Their work explores the social factors that influence coral-reef-management programmes, such as the perceived fairness of payment schemes that direct tourism revenue back to the communities who manage local reefs (G. G. Gurney et al. Environ. Sci. Policy 124, 23–32; 2021).“First and foremost, it’s an ethical and moral issue,” says Gurney. “Conservation should not impinge on the wellbeing of people; it should promote the wellbeing of people.”Based at James Cook University (JCU) in Townsville, a city on the northeastern coast of Queensland, Australia, Gurney has close access to the Great Barrier Reef, which contains the world’s largest coral reef ecosystem. The university has long-standing ties with researchers in nearby Pacific island nations, such as Papua New Guinea, Fiji and New Caledonia.Townsville was the second most-prolific city in the 82 high-quality natural-sciences journals tracked by the Nature Index for research related to the United Nations’ Sustainable Development Goal (SDG) Life below water (SDG14) in 2015–20, with a Share of 15.59, 52% of which is attributed to JCU. Beijing, placed first by output related to SDG14, had a Share of 17.88 for the same period. (For more information on the analyses used in this article, see ‘A guide to Nature Index’.)

Georgina Gurney and Sangeeta Mangubhai at a fish market in Suva, Fiji.Credit: Isabelle Gurney

According to Gurney, successful conservation programmes should evaluate social factors alongside ecological outcomes, such as fish stocks and coral health, although this is rarely the case. With Mangubhai and other collaborators, Gurney has developed a framework that combines 90 social and ecological indicators, from coral cover and fish biomass to household incomes derived from the reef, equitable benefit-sharing and conflicts occurring over marine resources (G. G. Gurney et al. Biol. Conserv. 240, 108298; 2019).In principle, the framework standardizes how outcomes of coral-reef programmes are evaluated to improve data collection and enable cross-country comparisons. It has been adopted by the New York-based non-governmental organization, the Wildlife Conservation Society (WCF), and its partners in 7 countries and more than 130 communities across Africa, Asia and the Pacific.Besides improving conservation efforts, Mangubhai, who leads the WCF’s Fiji programme, says the partnership gives equal footing to local conservation scientists and policymakers, empowering them to direct independent research. “If you have these meaningful collaborations, the outcome is going to have so much more of an impact on the ground,” she says.Incorporating an understanding of the social factors that influence coral-reef conservation into marine-management strategies translates to respect for local traditional cultural practices of Indigenous Fijians, says Mangubhai. Temporary closures called tabu, which are used to maintain the productivity of their customary fishing grounds, are a good example. “It’s a real merging of traditional knowledge and other best practices, such as size limits on fish catch, to help communities achieve the outcomes they want for themselves,” she says.

doi: https://doi.org/10.1038/d41586-021-02409-6This article is part of Nature Index 2021 Science cities, an editorially independent supplement produced with the financial support of third parties. About this content.

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NATURE INDEX
24 September 2021

Rising tide of floating plastics spurs surge in research

Strong government policies and research insights are essential to deliver on a pledge to clean up the sea.

Michael Eisenstein

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Michael Eisenstein

Michael Eisenstein is a freelance writer in Philadelphia, Pennsylvania.

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A jellyfish swims beneath a slick of floating plastic debris in the Indian Ocean near Sri Lanka.Credit: Alex Mustard/naturepl.com

Many stories have been written about the ‘Great Pacific garbage patch’, a name evoking a vast Sargasso Sea of plastic bottles and bags. But the reality is that much of this debris has been broken down into a murky suspension of ‘microplastics’ spanning an area three times the size of France.
Nature Index 2021 Science cities
These plastic flecks introduce long-lasting chemical pollution into marine and coastal ecosystems, says Daoji Li, an oceanographer at East China Normal University in Shanghai. In 2020, Li and his colleagues found that microplastic debris is highly concentrated in even the deepest underwater trenches (G. Peng et al. Water Res. 168, 115121; 2020). Staving off this influx of pollutants is a target of the United Nations’ Sustainable Development Goal (SDG) Life below water (SDG14), with its aim to “prevent and significantly reduce marine pollution of all kinds” by 2025.Between 4.8 million and 12.7 million tonnes of plastic waste entered the oceans in 2010, according to a study in Science, and those numbers are expected to increase dramatically by 2050 without improvements to waste-management infrastructure (J. Jambeck et al. Science 347, 768–771; 2015). Scientists in China, which is a major producer and importer of plastic waste, are taking the lead in amelioration. According to the 2021 UNESCO Science Report, floating plastic debris was the fastest-growing area of SDG-related research in 2012–19 (see ‘A buoyant field’). Publications from the Chinese mainland on the topic jumped from 7 in the period 2012–15 to 286 in 2016–19, placing it third by volume after the United States and United Kingdom. Much of this work has come from investigators in Beijing, the top-ranked city in the Nature Index for SDG14-related research. (For more information on the analyses used in this article, see ‘A guide to Nature Index’.)

Source: UNESCO

Li is sceptical that much can be done to eliminate existing plastic pollution. “But what we can do is stop them entering to the ocean,” he says. His team has developed a monitoring framework that outlines ‘gold-standard’ technologies and assays for detecting and quantifying microplastic contamination.Government action is essential to stem the flow of plastic debris. UNESCO reports that 127 countries have adopted legislation to regulate plastic bags. In 2020, China launched an ambitious effort to ban plastic bags nationwide by 2022 and cut single-use plastic in restaurants by one-third by 2025 — although the COVID-19 pandemic created a surge in demand for delivery that derailed this effort.Despite the many hurdles to overcome, Li feels positive about the future. “I am pretty confident that we could meet the target set for SDG14,” he says, “but when we realize those challenges, we should keep going.”

Source: UNESCO

doi: https://doi.org/10.1038/d41586-021-02408-7This article is part of Nature Index 2021 Science cities, an editorially independent supplement produced with the financial support of third parties. About this content.

Related Articles

Sustainable Development Goals research speaks to city strengths and priorities

Tracking 20 leading cities’ Sustainable Development Goals research

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Coral conservation strikes a balance

Uneven spread of research leaves poorer cities short of solutions

Pursuit of better batteries underpins China’s lead in energy research

How Belo Horizonte’s bid to tackle hunger inspired other cities

New York bids to level the playing field in a metropolis of inequality

Subjects

Conservation biology

Ocean sciences

Sustainability

Latest on:

Ocean sciences

Coral conservation strikes a balance
Nature Index 24 SEP 21

How cities are collaborating to help safeguard oceans
Nature Index 24 SEP 21

Widespread phytoplankton blooms triggered by 2019–2020 Australian wildfires
Article 15 SEP 21

Sustainability

Sustainable Development Goals research speaks to city strengths and priorities
Nature Index 24 SEP 21

Tracking 20 leading cities’ Sustainable Development Goals research
Nature Index 24 SEP 21

Coral conservation strikes a balance
Nature Index 24 SEP 21

Jobs

Postdoctoral Research Fellow in Bioinformatics and Genomics

Max Planck Institute for Molecular Biomedicine
Münster, Germany

Associate Professor (Tenure) or Professor (Tenure), Biomaterials

The University of British Columbia (UBC)
Vancouver, Canada

Postdoctoral Fellow in Functional Genomics/Glycomics

The University of British Columbia (UBC)
Vancouver, Canada

60048: Physicist, Statistician, theoretical Computer Scientist or similar (f/m/x) – Development of causal inference methods in the field causal Inference and machine learning as part of the EU project XAIDA

German Aerospace Center (DLR)
Jena, Germany More

NATURE INDEX
24 September 2021

How cities are collaborating to help safeguard oceans

Despite missed deadlines in 2020 for key targets in marine conservation, momentum for these Sustainable Development Goals is growing.

Michael Eisenstein

0

Michael Eisenstein

Michael Eisenstein is a freelance writer in Philadelphia, Pennsylvania.

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Bart Shepherd, co-leader of the Hope for Reefs initiative, guides fish into a decompression chamber while on expedition in Vanuatu.Credit: Luiz Rocha/California Academy of Sciences

For about 30 minutes each year, vast colonies of corals in the waters of Palau, an island nation in the western Pacific, erupt in an almost perfectly synchronized mass-spawning event. Releasing buoyant packages of sperm and egg cells into the water to be fertilized by neighbouring colonies, these hermaphroditic species must make the most of rare opportunities to seed new life.In one of the world’s few indoor coral-culturing labs, Rebecca Albright and her team at the California Academy of Sciences in San Francisco are recreating the seasonal and lunar shifts that trigger such an event. The aim is to create multiple spawning systems that can be studied under controlled conditions. “Corals are notorious for being fickle animals to keep in captivity,” says Albright, a coral biologist and co-leader of Hope for Reefs, a global initiative to research and restore crucial coral-reef systems. “Most only sexually reproduce once a year, so you have to simulate all these environmental cues to elicit that.”
Nature Index 2021 Science cities
Strategies for cultivating and transplanting healthy corals into depleted areas are a crucial part of strengthening populations against what Albright describes as the “one-two punch effect” of climate change. Rising temperatures cause coral bleaching and death, while ocean acidification caused by increased levels of carbon dioxide makes corals less resilient and prevents regrowth. “If we are able to cap warming at 1.5  °C, we’re still going to lose 90% of reefs by 2050,” she says. “And if we edge towards 2 °C, we risk losing 97% to 99%.”Of the United Nations’ 17 Sustainable Development Goals (SDGs), Life below water (SDG14) and other SDGs related to environmental sustainability — Responsible consumption and production (SDG12), Climate action (SDG13) and Life on land (SDG15) — were the weakest in both donor funding and outcomes, attracting less than US$25 billion between them in 2000–13, according to the 2021 UNESCO Science Report (see go.nature.com/3zlojva). SDGs that are more directly related to economic growth — Industry, innovation and infrastructure (SDG9) and Sustainable cities and communities (SDG11) — by comparison, received $130 billion and $147 billion, respectively, over the same period.James Leape, co-director of Stanford University’s Center for Ocean Solutions in California, notes that four of the ten targets for SDG14, which aims to “conserve and sustainably use the oceans, seas and marine resources”, were due in 2020. All were missed. These include controlling the global damage wrought by illegal and unregulated fishing, which remains largely unchecked, and implementing scientifically grounded strategies for restoring affected fish stocks.But there are signs of momentum. The amount of ocean being conserved and managed within marine protected areas (MPAs), for example, has increased from 0.9% to 7.7% since 2000, says Leape. MPAs are regions in which fishing, mining and other activities are restricted. Efforts are under way to further expand the number of MPAs globally.Coastal collaborationsAs the world’s leading fishing nation, responsible for 15% of the reported global wild fish catch, China has ramped up efforts to designate new MPAs. Since 1980, China has designated more than 270 MPAs, comprising about 5% of its national waters. But it’s a long way off efforts by countries such as the United States, which has more than 1,000 MPAs that cover about 26% of its waters, and the United Kingdom, with 371 MPAs comprising 38% of its seas. In a 2019 Nature correspondence, fisheries researchers Yunzhou Li and Yiping Ren, from the Ocean University of China in Qingdao and Yong Chen from the University of Maine, Orono, say that effective monitoring and strict enforcement will also be essential to the success of China’s efforts (see Nature 573, 346; 2019).In a city-based analysis by the Nature Index, Beijing had the greatest output related to SDG14 in the 82 natural-sciences journals tracked by the index in 2015–20, with a Share of 17.88, followed by the coastal city of Townsville in northeastern Queensland, Australia (Share 15.59) and the Boston metropolitan area (Share 13.66). The San Francisco Bay Area, second only to Beijing in output related to all 17 SDGs, had the sixth-highest Share for SDG14 (13.24). (For more information on the analyses used in this article, see ‘A guide to Nature Index’.)

Residents in the coastal town of Maroantsetra, in northeastern Madagascar, display their catch.Credit: Rebecca Gaal

Many small island states face serious threats from the rapid decline of their coral reefs, which represent one of the world’s most diverse ecosystems. Gildas Todinanahary, a marine biologist at the Fisheries and Marine Science Institute at the University of Toliara in Madagascar, says the percentage of live coral cover surrounding the island nation has dropped from more than 80% in the 1980s to less than 10%, on average, today. “Decades ago, they used to say there will always be fish in the sea,” says Todinanahary. “Now they say there are no more fish.” This has jeopardized the livelihood of the fishing communities on the island’s western shore, he says.Christopher Golden, an ecologist and epidemiologist at the Harvard School of Public Health in Boston, is working with Todinanahary and his colleagues to deploy a series of small tiered platforms, designed to mimic the cracks and crevices of the reef, into healthy coral communities along the Madagascar coast. Once colonized, these structures are transported into degraded reefs in an effort to repopulate them. “If we can create a healthier reef, we can then rehabilitate some of the fish populations, and that will lead to improved fish-catch and greater access to seafood as a nutritional resource,” says Golden.Todinanahary is enthusiastic about the potential for seeding new reefs in barren coastal stretches, but says education and outreach to fishing communities will be key to ensuring that those restoration efforts endure. “It’s important to help communities change their habits and activities,” he says — for example, by providing training for alternative livelihoods such as aquaculture.Buy-in from community leaders is also crucial to the success of partnerships between researchers in leading science cities and colleagues in low- and middle-income maritime nations in SDG-related projects. In 2016, the government of Palau invited Leape and his team at Stanford to develop a strategy for turning 80% of its exclusive economic zone, a 370-km radius surrounding the island, into a protected area where fishing is prohibited. The initiative went into effect in January 2020. “We’re using satellite tracking to understand the patterns of use of the sanctuary by large pelagic species, and using DNA analysis to monitor biodiversity in the sanctuary,” says Leape. Palau’s programme has helped to motivate other island nations in the region to extend marine protection and conservation efforts as part of the Micronesia Challenge, an initiative to conserve 50% of marine resources and 30% of terrestrial resources by 2030.Golden’s research emphasizes both the sustainability and food-security sides of the fisheries-management coin, with routine health assessments of communities in places such as Madagascar and the Republic of Kiribati, an island nation in the central Pacific Ocean, coupled with close monitoring of the ecological health of their surrounding waters. To help this effort, Golden and his colleagues developed the Aquatic Food Composition Database, which compiles detailed nutritional information on more than 3,700 local plant and animal species to provide ecologically grounded guidance to local fishers. “We can look at what type of resilience there might be if we lose access to one species and have to focus on another,” says Golden. “We can understand the type of nourishment that people are actually getting from their catch.”Stanford’s Center for Ocean Solutions is also leveraging new technologies to guide sustainable fishing practices that benefit small-scale fishers, whose livelihood SDG14 aims to safeguard. “Their catches account for about two-thirds of the seafood we eat, and 90% of the fishery jobs,” says Leape. The centre is partnering with ABALOBI, an organization in South Africa founded by fisheries researcher Serge Raemaekers, from the University of Cape Town. ABALOBI has designed a mobile app toolbox to help fishers track specific fish populations, coordinate boats and crews, and bring catches to market. Leape is hopeful that early pilot testing in Africa and the Indian Ocean will pave the way for broader deployment in the near future.In parallel, Leape’s team is working on strategies to crack down on illegal fishing — currently estimated to account for roughly 20% of the global catch. This is being achieved partly through tools such as the satellite-based fishery monitoring efforts of Global Fishing Watch, a website run by Google in partnership with conservation non-profit organizations Oceana and SkyTruth. But technology is only part of the solution. Leape sees a crucial role for aggressive government enforcement and getting major corporations to engage in closer oversight of fishing practices. “We’ve been using Global Fishing Watch and other data sources to understand the patterns and areas for illegal fishing,” he says. “We’re working with these partners to try to translate that data into a more concerted effort to crack the problem.”

doi: https://doi.org/10.1038/d41586-021-02407-8This article is part of Nature Index 2021 Science cities, an editorially independent supplement produced with the financial support of third parties. About this content.

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