Advancing interdisciplinary knowledge for ocean sustainability

In August 2022 we launched the inaugural issue of a new Nature journal focused on our blue planet: npj Ocean Sustainability 1 . The opening issue highlighted the journal’s intended role in sharing research, critically debating key challenges to achieving ocean sustainability, with its environmental and human dimensions, and advancing pathways to address them. In just 1 year, the journal’s interdisciplinarity and solution-oriented nature have shone through and made it stand out among prestigious journals. Covered topics were diverse (Fig. 1 ), ranging from the challenges of seabed mining to the new agreement on marine biodiversity beyond national jurisdiction, to fisheries management, climate change impacts, global science-policy interfaces, human connections with ocean spaces, and digital twins. Many papers address different ocean sectors simultaneously, integrating different disciplines and different dimensions of ocean sustainability challenges (e.g., biodiversity loss, pollution, over-exploitation of species). Fig. 1: Word cloud of titles of manuscripts (Articles, Reviews, Perspectives, and Comments) accepted for publication in npj Ocean Sustainability in 2022 and 2023. Data includes online and in press manuscripts by the end of August 2023. Full size image In this promising first year, accepted publications included 12 original research Articles , two Review articles , two Perspectives, and seven Comments (with c. 30 additional manuscripts under revision). These publications resulted from the collaborative work of 180 authors representing 30 countries worldwide (Fig. 2 ). Authorship was geographically widespread; yet only 20 authors (11%), hailing from 12 countries (40%) outside of established research hubs were involved (Fig. 2b ). This underscores the importance of fostering greater participation from under-represented parts of the world, which is part of our mission for the near future. As for gender equality, there was a balance between women (51%) and men (49%), and 70% of the lead authors were women (Fig. 2d ). With a focus on representativeness and an inclusive spread of articles, the editorial team has also been revamped, with an expansion in both numbers and geographical representation (the earlier team was composed of 20 members, 85% of which were based in Europe, North America, and Australia). The journal now has two Editors-in-Chief, seven Associate Editors, 22 Board Members and two Managing Editors from 15 countries, with a third of the editors (33%) based in the Global South (in Brazil, China, Ghana, Malaysia, Nigeria, South Africa, Sri Lanka, and Trinidad and Tobago) (Fig. 2b ), and a balanced gender distribution (58% women versus 42% men) (Fig. 2d ). We will keep working further to improve representativeness from other regions in the editorial team (e.g., Southern Asia, Eastern Africa, Central America). Fig. 2: Distribution of contributing authors and editors of npj Ocean Sustainability per country and gender. a Number of contributing authors of papers accepted for publication until the end of August 2023, per country of affiliation (countries from the Global South are highlighted with an asterisk and darker colour tone). b Number of journal editors per country of affiliation. c Total number of contributing authors and editors per country. d Gender distribution of contributing authors and editors. Data on gender was inferred from information available online; when information was not available (such as references to ‘she/her/he/his’) in credible pages data was not included. e Total number of submissions to npj Ocean Sustainability from September 2021 (when the journal started welcoming submissions) to the end of August 2023; this 24-month period was divided into semesters for visualisation purposes: 1st semester (September 2021–February 2022), 2nd (March 2022–August 2022), 3rd (September 2022–February 2023), 4th (March 2023–August 2023). Full size image Over this time, we received an increasing number of submissions, particularly in the last six months (Fig. 2e ). Attention to npj Ocean Sustainability is growing as the journal has published globally relevant science on pertinent topics that received significant media attention over the past year. Deep seabed mining (DSM) is one such topic and the two pieces on DSM published in the journal are both in the top 5% of all research outputs ever scored by Altimetric (which aims to quantify online engagement with published research) with scores of 224 2 and 396 3 (Fig. 3b ). The first, a provocative Comment by Jaeckel et al. 2 , questioned whether DSM meets standards for social legitimacy. The authors used a legitimacy framework to discuss the social-equity dimensions of this emerging industry in the ocean commons and concluded that the impacts of DSM on people have not been sufficiently researched or understood. Next, in an original research Article , Amon et al. 3 highlighted how climate change will likely drive increasing overlap between Pacific tuna fisheries and the emerging deep-sea mining industry in the Clarion-Clipperton Zone of the Pacific Ocean. While recognising that the interactions between mining, fish populations, and climate change are complex and unknown, the authors explained that projected increases in overlap indicate that the potential for conflict and resultant environmental and economic repercussions will be exacerbated in a climate-altered ocean. Constructively and thought-provokingly, the authors further suggested pathways for closing critical scientific and governance gaps in the region, for example, by including future climate scenarios into regional planning processes and developing and evolving rules and procedures of the International Seabed Authority’s (ISA’s) Mining Code. Both pieces had high media coverage, appearing in a total of 59 news outlets 2 , 3 . Fig. 3: Metrics of manuscripts (Articles, Reviews, Perspectives, and Comments) published at npj Ocean Sustainability in 2022 and 2023 . a Altimetric percentile of published manuscripts. b Altimetric Attention Score of published manuscripts. c Number of online accesses of published manuscripts. Data were collected on September 15, 2023, from Altimetric ( https://nature.altimetric.com ). Manuscripts in press at the time (not yet online) were not accounted for here. Full size image The Biodiversity Beyond National Jurisdiction (BBNJ) Agreement —the Agreement under the United Nations Convention on the Law of the Sea on the conservation and sustainable use of marine biological diversity of areas beyond national jurisdiction that was adopted in June 2023 4 —is another topic that attracted significant reflection over the past year, both in the journal and in social and mainstream media. An inspiring Comment by Gjerde et al. 5 reflected on the need for getting beyond ‘yes’ and fast-tracking the Agreement’s implementation (the piece was developed after the first part of the fifth session of the Conference of the Parties had taken place in August 2022 4 ). The authors provided initial reflections on three priority areas to support rapid, effective, and equitable implementation of the Agreement: bringing the Agreement into force; establishing the institutional framework, including financial mechanisms; and developing capacity, science, and technology. They observed that the growing impacts of climate change and human activities on the global ocean require urgent action. The piece received significant online attention, being in the top 5% of all research outputs scored by Altimetric (Altimetric Attention Score of 127) 5 . A subsequent Comment by Deasy 6 further examined what was known and what remained unclear about the Agreement—the piece was developed after the second part of the fifth session of the Conference had taken place in February–March 2023 4 . Deasy appropriately highlighted that, while the Agreement leaves a lot open to question, it establishes several historic benchmarks for protecting the High Seas, setting the stage for further scientific exploration and paving the way for more effective marine conservation. A third piece, a thought-provoking Article by Nocito and Brooks 7 , examined the influence of Antarctic marine conservation governance frameworks in Agreement negotiations. Aligned with Deasy’s piece, the authors explored the precedent-setting and lessons learned from the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) 8 regarding establishing High Seas marine protected areas, and how the latter have affected and may further affect the Agreement’s architecture and implementation. The topic of fisheries received considerable attention in npj Ocean Sustainability , with authors adopting a systems perspective encompassing nutrition and public health and climate change adaptation and mitigation. The Article by Kjellevold et al. 9 , investigated the contribution of small-scale fisheries to food and nutrition security using Norway as a case study. In a surprising analysis, the authors showed that small-scale fisheries could provide up to five million people with between 70 to 96% of the recommended intake of key nutrients. Quantifying catches and comparing them with recommended dietary intakes, the authors called for fish to be included in Norway’s food-based dietary guidelines. A cautionary Article by Beckensteiner et al. 10 used a stylised bio-economic model of the global marine fishery to show that failing to limit regulation of access under future climate change is likely to lead to fishery maladaptation, unstable conditions for both the fishing industry and fish stocks, and significant economic losses. By incorporating ecological, industry, and management responses, the authors demonstrated the value of integrated approaches to study the impacts of climate change on fisheries. Finally, a well-developed Article by Prellezo et al. 11 highlighted the need to build climate resilience, social sustainability, and equity in global fisheries to achieve targets to limit global warming established by the Paris Agreement 12 . In applying a market-based solutions (MBS) scheme, the authors found that if CO 2 trading prices reach the 2050 social cost of carbon, around 75% of the landings worldwide would be more valuable as carbon than as foodstuff in the market, echoing the findings reported in Rogers et al. 13 with respect to the High Seas. Applying MBS would produce a socialisation of the climate costs of fishing and benefit the overall fisheries challenge of keeping global ocean biomass high enough to maintain a profitable fisheries sector, while at the same time increasing resilience that supports other values obtained from the ocean. Climate change mitigation and adaptation was a topic of interest across areas and sectors, and was further addressed in pieces centred on ocean energy and maritime shipping. A comprehensive Review Article by Galparsoro et al. 14 assessed the ecological impacts of offshore wind energy production. The authors argued that the environmental effects of ocean energy production need to be comprehensively evaluated so they can be reduced as much as possible to ensure ocean sustainability and avoid unintended environmental losses. The latter was one of the earlier pieces published in npj Ocean Sustainability and yet another to receive significant online attention. It is in the top 5% of all research outputs scored by Altimetric (Altimetric Attention Score of 132) and has the highest number of online accesses among the journal’s publications—29,000 (Fig. 3c ) 14 . Focus on another important maritime sector was provided in an Article by Lu et al. 15 , who discussed how the global maritime container shipping industry, being responsible for a significant part of the burning of marine fossil fuels and shipping emissions, is under pressure to decarbonise. The authors presented an integrated framework of bottom-up estimation and upscaling pathway analysis to measure container shipping emissions and project possible pathways toward carbon neutrality. They further argued that the energy transition will be the largest contributor to emission reductions over the medium to long term. An Article by Müller et al. 16 provided a fascinating examination of Arctic shipping trends and discusses the effectiveness of the International Code for Ships Operating in Polar Waters (Polar Code) 17 . The authors analysed shipping activity patterns in severe sea-spray icing conditions and showed that there has been a strong increase in winter sailing under extreme conditions over the past decade. They argued that the Polar Code needs refinement through the integration of maritime warning systems in order to avoid sea-ice-induced incidents 16 . The ocean science-policy interface is another highly relevant thematic area to advance a sustainable ocean. Five pieces published this year addressed it, starting with an intriguing Perspec tive by Gail et al. 18 , who made the case that a global platform with a thematic focus on ocean sustainability—similar to the Intergovernmental Panel on Climate Change (IPCC) 19 and the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) 20 —was needed to effectively support a shift towards a sustainable ocean. The authors introduced the International Panel for Ocean Sustainability—the IPOS—as a coordinating mechanism to integrate knowledge systems to bridge ocean science-policy divides cross-sectorally. The piece received ample attention online (in the top 5% of all research outputs scored by Altimetric with an Attention Score of 88 18 ) and in the decision-making realm—the IPOS’s creation is supported by the European Union 21 and a growing alliance of marine science institutions and nations. A subsequent Article by Schadeberg et al. 22 focused on a largely overlooked biome and considered the influence of science on the current governance of the mesopelagic zone (i.e., 200–1000 m depth). Using an automated content analysis of scientific abstracts and tweets, the authors identified two emerging topics related to the mesopelagic zone—the exploitation of fish resources and the zone’s role as a carbon sink—that are shaping how the resources and ecosystem services are understood and valued. They further highlighted the need for transdisciplinary knowledge creation and stakeholder engagement to ensure the legitimacy of policymaking affecting the future of this understudied but vital realm. Another stimulating Article by Boemare et al. 23 pointed to the benefits of hybridising research and decision-making in ocean spaces. Using a French Mediterranean protected area as a marine social-ecological case study, the authors combined codesigned visioning narratives with an ecosystem-based model. They argued that hybridising research and decision-making with iterative collaborative modelling frameworks could pave the way for previously unidentified transformative pathways, enhance adaptive management policies and support ocean sustainability. Next, an extensive Article by Potter and Pearson 24 assessed the state of the global ocean science community. The authors investigated international collaborations, underlying concerns, and the current state of research in five ocean basins (i.e., Arctic, Atlantic, Indian, Pacific, and Southern Ocean). They argued that in specific regions—e.g., South America and sub-Saharan Africa—growth in research outputs and collaborations could be catalysed by increased financial and social support for educational efforts and infrastructure development. Finally, and in line with the latter piece, a timely Comment by Spalding et al. 25 advocated for the need to engage low to middle-income countries in the tropics—the so-called ‘tropical majority’—to make ocean governance and science more equitable and effective. The authors proposed four actions for transformational change that are grounded in the perspectives, experiences, and existing knowledge of people in the tropics. They argued that such actions are critical to ensuring a leading role for the tropical majority in maintaining thriving ocean societies and ecosystems. The latter piece received significant online and media attention, being in the top 5% of all research outputs scored by Altimetric (Altimetric Attention Score of 166) and appearing in 15 news outlets 25 . Six additional pieces delved into the multiple dimensions and diversity of human connections with ocean spaces . An interesting and innovative Comment by Kelly et al. (2023, forthcoming ) 26 discusses the conceptualisation of the construct of an ocean identity. The authors argued that the latter is a valuable lens that can be used to unpack multiple conceptual dimensions of human connections with ocean spaces. They presented a revised definition of ocean identity, proposing a conceptual framework based on a robust analysis of literature aiming to contribute to the ongoing ocean literacy discourse. A fascinating Comment by Bennett et al. 27 —one of the earlier pieces published in npj Ocean Sustainability —highlighted that local marine stewardship initiatives and ocean defenders are commonly at the forefront of ocean sustainability efforts yet often receive insufficient recognition and support. The authors provided five recommendations to bring greater attention and support to the topic in research, policy, practice, and funding. A subsequent and wide-ranging Review Article by Crosman et al. 28 —another earlier article published in the journal—argued that social equity should be a key concern in ocean governance. The authors argued that calls to address social equity in ocean governance are expanding, and presented a framework to support consistent operationalization of equity and evaluate progress without oversimplification. Also exploring the connections of coastal communities and peoples with the ocean, a Comment by Manero 29 discussed the case for protecting the value of ‘surfing ecosystems.’ Manero argued that while surfing ecosystems (surf breaks and their surrounding environments) are valuable natural assets, their sustainability is compromised by mounting threats (e.g., coastal erosion, urban development, mass tourism). The author further discussed international examples of how conservation frameworks could support the protection of these ‘surfing ecosystems.’ Moving from coastal areas to the High Seas, a creative Article by Lübker et al. 30 explored imagined sustainable futures by combining the power of and The authors four science that to the and current were analysed using the of and the authors argued that with futures could open transformative spaces to the between and the High Seas, from which could An intriguing Article by et al. a new to progress in marine planning The authors developed and the to be by and to the of was to a that into and for the of initiatives and their across ocean regions and nations. The was to the United the and South . thought-provoking piece the first year of npj Ocean Sustainability , a by et al. on digital , which are digital of a (e.g., or in a digital of its The authors discussed how digital a yet can be a to achieving ocean sustainability. The authors argued that while digital can advance sustainable ocean management, the potential of such emerging is They reflected on the of digital across four thematic and marine pollution, to climate and implementation such as data and and proposed solutions . The of topics and approaches the diversity of ocean science and knowledge that our journal aims to support and much work is needed to further research areas, such as on and transdisciplinary work by of all disciplines and of the people they are working and ocean sector and

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