Thematic Area

Marine protected areas (MPAs) are ubiquitous in global ocean conservation and play a pivotal role in achieving local, national, and regional area-based conservation targets. Often, such targets are merely met on “paper” and lack the political or managerial resources to produce positive conservation outcomes. Here, we apply the MPA Guide – a framework for assessing the quantity and quality of marine protected areas – to Guam and the Commonwealth of the Northern Mariana Islands (CNMI), two U.S. territories in the Western Pacific.

Conserving our sea of islands: State of protected and conserved areas in Oceania is a landmark publication, bringing together regional and international experts to prepare the first comprehensive review of the status and issues for protected and conserved areas in the region. The report embodies the spirit of the late scholar Epeli Hau’ofa, who devised the phrase ‘Our Sea of Islands’ to help re-imagine the region as selfdetermined ‘Big Ocean States’ connected to place and each other – ideas that underpin conservation.

Marine coastal ecosystems (MCEs) provide a myriad of services on which governments, businesses, and society depend. MCEs include coral reefs, mangroves, seagrass, oyster beds and reefs, salt marshes, and sandy beaches and dunes. As of 2020, it was estimated that more than half of the world’s total gross domestic product (GDP)—around $44 trillion—depends on nature and its services (WEF 2020). The ocean economy contributes an estimated 3%–5% of global GDP (Spalding, Brumbaugh, and Landis; Millennium Ecosystem Assessment Program 2005; Ferrario et al.

Healthy mangrove ecosystems are critical for global climate action – playing a key role in carbon storage and in building resilience to a rapidly warming world. Mangroves stabilize coastlines, reduce erosion, foster biodiversity growth and protect coastal communities by building their adaptive capacity and making them more resilient to the impacts of climate change, such as sea-level rise, storms and coastal erosion, Mangroves prevent more than US$65 billion in property damages and reduce flood risk to some 15 million people every year.

Marine traffic is increasing globally yet collisions with endangered megafauna such as whales, sea turtles, and planktivorous sharks go largely undetected or unreported. Collisions leading to mortality can have population-level consequences for endangered species. Hence, identifying simultaneous space use of megafauna and shipping throughout ranges may reveal as-yet-unknown spatial targets requiring conservation. However, global studies tracking megafauna and shipping occurrences are lacking.

Marine protected areas (MPAs), particularly large MPAs, are increasing in number and size around the globe in part to facilitate the conservation of marine megafauna under the assumption that large-scale MPAs better align with vagile life histories; however, this alignment is not well established. Using a global tracking dataset from 36 species across five taxa, chosen to reflect the span of home range size in highly mobile marine megafauna, we show most MPAs are too small to encompass complete home ranges of most species.

The vulnerability of marine biodiversity to accelerated rates of climatic change is poorly understood. By developing a new method for identifying extreme oceanic warming events during Earth's most recent deglaciation, and comparing these to 21st century projections, we show that future rates of ocean warming will disproportionately affect the most speciose marine communities, potentially threatening biodiversity in more than 70% of current-day global hotspots of marine species richness.

Gender equality, a universal agreed principle and value has been adopted widely but implemented to varying levels in different sectors. Our study was designed to contrast how gender development and fisheries sectors view and invest in gender and then explore opportunities to strengthen collaborative relationships and networks between the two, with the aim of improving capacity for gender inclusion in practice in fisheries.

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A BIORAP is a biological inventory programme undertaken in marine and terrestrial environments, and is designed to rapidly assess the biodiversity of highly diverse areas. Options to manage threats and protect some remaining examples of indigenous biodiversity of national or international significance are recommended to governing communities.The Nauru BIORAP took place in selected terrestrial and marine areas of the Republic of Nauru during 17–27 June, 2013. The key finding of the Nauru BIORAP are presented in this synthesis report.

Marine protected areas (MPAs) are recognized as highly effective tools for marine conservation. They may also play an important role in mitigating climate change. A variety of climate change solutions are rooted in the ocean, centered primarily around “blue carbon” and the capacity of marine life to sequester carbon dioxide (CO2) with some potential to reduce emissions. However, the global potential of these solutions remains misunderstood and untapped.