Abstract: Peatlands are rich in biodiversity, which are closely associated with environmental factors. The investigation of peatland biodiversity is crucial to comprehending the integrity of peatland ecosystems. Invertebrates are important components of peatland fauna as they are essential participants in nutrient cycling and energy flow. A large number of studies have reported on the distribution, community structure, and response of invertebrates to environmental changes in peatlands. The main taxa of invertebrates in peatlands are nematodes, Collembola, Oribatida, ants, spiders, beetles, and Chironomidae. The research hotspots are Europe, America, China, and Southeast Asia. In this review, we summarized the main taxonomic composition of peatland invertebrates, and the responses of invertebrate communities to environmental changes. We then provided prospects for future research, including: (1) performing a systematic survey of invertebrate fauna in peatlands, and establishing a complete species list; (2) exploring the feedback mechanisms and ecological functions of peatland invertebrates under the background of global climate change; (3) highlighting the role of invertebrates as environmental indicator.

Key words: peatland, invertebrate, biodiversity, environmental change