Dragonflies are indicators of freshwater ecosystem health. Their welfare and conservation depend on clean water, diverse aquatic vegetation, and suitable aerial habitat.
Dragonfly welfare is primarily a larval water quality issue. Larvae that develop in polluted, oxygen-depleted water experience physiological stress throughout their multi-year development. Those that develop in high-quality, clear water with diverse aquatic vegetation show better survival and emergence success. The welfare implications of freshwater pollution for dragonfly populations are enormous given the numbers involved. Garden pond creation is one of the most direct welfare interventions: a clean, well-planted pond provides larval habitat for multiple dragonfly species. Reducing agricultural chemical runoff into watercourses and improving wastewater treatment standards both have direct dragonfly welfare benefits.