Biomass and abundance data are critical for ecosystem monitoring and management of fish populations, yet their acquisition represents a growing challenge as anthropogenic pressures intensify the need for monitoring. Environmental DNA (eDNA) has the potential to provide cost‐effective biomass and abundance estimations, but its high molecular stability makes it prone to false positives. By contrast, environmental RNA (eRNA) has...

Traditional morphology‐ and molecular‐based biodiversity surveys provide essential information on species composition and diversity, but they rarely provide information about the physiological states of organisms, which are key indicators of ecosystem health. Environmental RNA (eRNA) has the potential to significantly enhance biomonitoring by providing insights beyond species detection. Recent studies suggest that extra‐organi...

In the built environment, fungi can cause important deterioration of building materials and have adverse health effects on occupants. Increased knowledge about indoor mycobiomes from different regions of the world, and their main environmental determinants, will enable improved indoor air quality management and identification of health risks. This is the first citizen science study of indoor mycobiomes at a large geographical...