Wetland ecosystems are vital for both biodiversity and communities that depend on them. The Ligawasan Marsh in the Southern Philippines is one of the most threatened wetlands in the country. Apart from growing anthropogenic developments (e.g. natural gas extraction and industrialisation), marshes face warfare-driven threats that have hindered research and conservation efforts in the area for many decades. Our study is the first to investigate the patterns of physicochemical parameters, the impact of land-use changes on the environmental status of the marshland, and the contribution of surrounding towns. We found a strong negative correlation between dissolved oxygen (DO) and indicators of pollution such as biochemical oxygen demand (BOD), chemical oxygen demand (COD), and heavy metals. Interestingly, we observed elevated levels of phosphate and mercury at all sampling sites within the Ligawasan Marsh. Our landscape-level modelling showed that these elevated levels are associated with expanding croplands and urbanisation. Furthermore, we utilised our newly developed Marshland Impact Area (MARia) Index. We found that the potential impact contribution of cropland and urbanisation from surrounding towns of the Ligawasan Marsh varied significantly, suggesting the importance of implementing local policies to reduce land use change impacts. With the current limited knowledge and beyond safe pollution levels in the Ligawasan Marsh, it is crucial to implement collaborative and science-based governance to integrate conservation initiatives with the priorities of global targets, such as the Kunming-Montreal Global Biodiversity Framework, for a comprehensive and sustainable approach to Ligawasan Marsh conservation.

Understanding biodiversity patterns as well as drivers of population declines, and range losses provides crucial baselines for monitoring and conservation. However, the information needed to evaluate such trends remains unstandardised and sparsely available for many taxonomic groups and habitats, including the cave-dwelling bats and cave ecosystems. Here, we present the DarkCideS 1.0, a global database of bat caves and bat species based on curated data from the literature, personal collections, and existing datasets. The database contains information for geographical distribution, ecological status, species traits, and parasites and hyperparasites for 679 bat species known to occur in caves or use caves in their life-histories. The database contains 6746 georeferenced occurrences for 402 cave-dwelling bat species from 2002 cave sites in 46 countries and 12 terrestrial biomes. The database has been developed to be a collaborative, open-access, and user-friendly platform, allowing continuous data-sharing among the community of bat researchers and conservation biologists. The database has a range of potential applications in bat research and enables comparative monitoring and prioritisation for conservation.

Wildlife-watching and ecotourism are effective approaches for improving public attitudes and raising awareness of wildlife conservation. However, the ability of wildlife tourism to enhance the conservation of less appealing taxa such as bats has rarely been examined. We sampled a total of 197 tourists in Monfort Bat Cave Sanctuary in the Philippines, the world’s largest colony of Geoffroy's Rousette (Rousettus amplexicaudatus). Convenient pre/post-visit surveys were conducted to (a) explore the potential of bat-watching to raise tourists’ knowledge, attitudes towards bats, and determine how perceptions vary across demographic classes; and (b) determine potential predictors of conservation willingness among sampled urban tourists. Our study observed an increase in knowledge about bats and 61% of the tourists are willing to support conservation bat protection after the bat-watching visit to the cave site. Tourists’ conservation willingness was associated with age group, prior knowledge of bat ecosystem services, and perceptions about the conservation relevance of bat-watching as a conservation initiative. Our study highlights the effectiveness of short-term engagements such as bat-watching at improving human-bat interactions and suggests such programs should focus on highlighting ecosystem services and benefits of bats. However, it should be noted that we performed this study before the COVID-19 global pandemic and misinformation linking bats to the disease spread has increased since. We expect that public perception will change in the post-COVID-19 period and the conservation willingness survey should be repeated to understand how to counter misconceptions to develop effective bat conservation management in the post-COVID-19.This manuscript is accepted in Environmental Challenges