Water shrews are indicators of clean waterway health. Understanding their habitat needs supports targeted conservation and accurate population monitoring.
Individual water shrews face mortality from water pollution events, riparian habitat loss through bank clearance and flooding from extreme rainfall. As highly active insectivores with elevated metabolic rates, they are particularly vulnerable to prey scarcity during cold periods. Conservation management that maintains vegetated, undercut banks with root complexes provides critical refugia. Bank stabilisation using rip-rap rock removes these microhabitats. Non-invasive monitoring through hair tubes and camera traps avoids the stress of live trapping for population assessment.