Biological

Marine protected areas (MPAs) provide place-based management of marine ecosystems through various degrees and types of protective actions. Habitats such as coral reefs are especially susceptible to degradation resulting from climate change, as evidenced by mass bleaching events over the past two decades. Marine ecosystems are being altered by direct effects of climate change including ocean warming, ocean acidification, rising sea level, changing circulation patterns, increasing severity of storms, and changing freshwater influxes.

Many Pacific coral reefs are being damaged by habitat disturbance, pollution, fishing and climate change. Climate change is believed to be the greatest human-induced threat to corals in the Pacific region. The region needs an action plan to make cohesive decisions that will benefit coral reefs. This will enable leaders of Pacific Island countries, coral-reef managers and community members to coordinate their efforts to protect these valuable ecosystems.

The expedition was conducted by KSLOF, a US-based nonprofit environmental organization dedicated to providing science-based solutions to protect and restore ocean health. Starting as early as 2001, the foundation conducted field research to survey and map coral reefs to aid in coral conservation efforts. These research missions culminated in the Global Reef Expedition, which brought together an international team of over 200 scientists, educators, photographers, and filmmakers who circumnavigated the globe surveying some of the most remote coral reefs in the world.

Islands are useful model systems for examining human–environmental interactions. While many anthropogenic effects visible in the archaeological and paleoecological records are terrestrial in nature (e.g., clearance of tropical forests for agriculture and settlement; introduction of nonnative flora and fauna), native peoples also relied heavily on marine environments for their subsistence and livelihood.

Coral reefs worldwide are facing impacts from climate change, overfishing, habitat destruction, and pollution. The cumulative effect of these impacts on global capacity of coral reefs to provide ecosystem services is unknown. Here, we evaluate global changes in extent of coral reef habitat, coral reef fishery catches and effort, Indigenous consumption of coral reef fishes, and coral-reef-associated biodiversity. Global coverage of living coral has declined by half since the 1950s.

Sediment runoff from disturbed coastal catchments is a major threat to marine ecosystems. Understanding where sediments are produced and where they are delivered enables managers to design more effective strategies for improving water quality. A management strategy is targeted restoration of degraded terrestrial areas, as it provides opportunities to reduce land-based runoff from coastal areas and consequently foster coral reef conservation.

Ocean warming is causing declines of coral reefs globally, raising critical questions about the potential for corals to adapt. In the central equatorial Pacific, reefs persisting through recurrent El Niño heatwaves hold important clues. Using an 18-year record of coral cover spanning three major bleaching events, we show that the impact of thermal stress on coral mortality within the Phoenix Island Protected Area (PIPA) has lessened over time.

Sustainable tourism involves increasingly attracting visitors while preserving the natural capital of a destination for future generations. To foster tourism while protecting sensitive environ‐ ments, coastal managers, tourism operators, and other decision‐makers benefit from information about where tourists go and which aspects of the natural and built environment draw them to particular locations. Yet this information is often lacking at management‐relevant scales and in remote places. We tested and applied methods using social media as data on tourism in The Bahamas.

This policy gap analysis identifies threats to coral reefs, evaluates the effectiveness of the existing legal framework to address these threats, and formulates recommendations to strengthen community-based natural resource management in Solomon Islands. Coral reefs are of crucial importance for food security and rural livelihoods in the archipelago. Logging is a major, yet often overlooked, threat to coral reefs in the country. Large-scale logging operations cause massive erosion, which has a detrimental effect on water quality.