This study presents a new method for assessing the ecological health of Tongguling National Nature Reserve on Hainan Island. By evaluating the interaction of ecological and structural elements, the research showed areas sensitive to environmental change, highlighting the link between water quality and coastal ecosystem health. These insights support better conservation strategies to preserve biodiversity and ecosystem services.

This article belongs to the collection: Ecological monitoring and assessment of freshwater ecosystems: new trends and future challenges.

This study assessed resilience changes in the supply and demand of water resources in the Yellow River Basin over the past decades by using an improved grey-target model. From 2011 to 2020, the resilience index increased by 69.4%, with the contribution of driving factors rising by 70.9%. The findings highlighted resilience disparities between supply and demand, providing evidence for improving water resilience.

This article belongs to the collection: Global perspectives: sustainable management of freshwater ecosystems.

Underwater acoustic tomography (UAT) is a technique used to monitor waterbodies. From 1979 to 2023, 720 researchers published 449 UAT-related articles in 135 journals. UAT, divided into Ocean Acoustic Tomography (OAT), Coastal Acoustic Tomography (CAT) and Fluvial Acoustic Tomography (FAT), faces adoption barriers, including high costs, limited collaboration and a lack of user-friendly software and educational resources. Recommendations include fostering collaboration, developing educational resources, promoting knowledge transfer, facilitating international exchange, commercialising systems, establishing online resources and designing user-friendly software.