Peatland Chironomidae (Diptera) : effects of flooding on emergence from Lake 979, Experimental Lakes Area, Ontario / David M. Rosenberg, Allen P. Wiens, Bohda Bilyj, and Lwellyn Armstrong.
Material type:
TextSeries: Journal of the North American Benthological Society. 20(3) 448-467 Publication details: 2001.Description: illustrations ; 28 cmLOC classification: - ROS
| Item type | Current library | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Electronic Journal
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IWWR Supported Research | Non-fiction | ROS (Browse shelf(Opens below)) | Available | 16783 |
Includes bibliographical references (pages 465-467).
The experimental flooding of Lake (L) 979, a small wetland lake at the Experimental
Lakes Area (ELA) in northwestern Ontario, provided an opportunity to study effects on the chironomid
fauna emerging from the surrounding peatland. Nearby L632 was used as a reference system.
The nature of the peatland chironomid fauna in L979 changed dramatically. Most true peatland
species were eliminated by the flooding. They were quickly replaced by lacustrine species whose
numbers emerging from the flooded peatland increased substantially. In contrast, qualitative and
quantitative changes in emergence were minimal from the open-water zone of the lake and from
L632. Intensive study of L979 and L632 revealed 12 species of true peatland chironomids in common
with other peatlands at the ELA, and added another 18 species to the 37 peatland species already
identified from previous studies at the ELA. Most of the 55 species have wide zoogeographic distributions,
and probably occur in peatlands all across the boreal zone of Canada, but confirmatory
studies are needed.