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1 March 2006 Chironomid Emergence and Relative Emergent Biomass from Two Alabama Streams
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Abstract

Chironomid pupal exuviae were sampled monthly using drift nets and hand sieves over an annual cycle from Hendrick Mill Branch (HMB; Blount County, AL) and Payne Creek (PC; Hale County, AL). Taxon richness, community composition, and emergence phenologies were similar despite marked differences in physical/chemical characteristics of the study streams. The highest emergence rates were observed in spring (PC) or both spring and fall (HMB). However, there was no significant relationship between emergence/emergent biomass and date. Estimates of daily emergence and emergent biomass were much higher in HMB than in PC. These patterns may have resulted from a more consistent flow regime, higher substrate stability, lower variation in temperature/chemical characteristics, greater channel surface area, and a more significant hyporheic zone in HMB than in PC.

Steven K. Reynolds and Arthur C. Benke "Chironomid Emergence and Relative Emergent Biomass from Two Alabama Streams," Southeastern Naturalist 5(1), 165-174, (1 March 2006). https://doi.org/10.1656/1528-7092(2006)5[165:CEAREB]2.0.CO;2
Published: 1 March 2006
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