The impact of acidification on Chironomidae (Diptera) as indicated by subfossil stratification
1982
The impact of acidification on the chironomid profundal fauna was studied by comparing chironomid head capsule deposits from different sediment layers. The 14–15 cm level was regarded as relatively unaffected by acid precipitation and therefore used as a control. The total number of capsules decreased, especially the number of Tanytarsinii capsules, from deeper to more superficial layers. Phaenopsectra and Psectrocladius showed a relative increase towards the surface level of the sediment. Probable causes for these changes are discussed.
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