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The relationship between S. purpurea and its inquilines in northeastern North America is reviewed. Wyeomyia smithii, Metriocnemus knabi and Blaesoxipha fletcheri dominate the insect community of S. purpurea. All 3 are detritivores and feed on the arthropod prey attracted to the pitcher plant. They c...
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In the mid 1970s, Manitoba Hydro impounded Southern Indian Lake (SIL) and diverted much of the flow of the Churchill River, which flowed through SIL, into the Nelson River Catchment for hydroelectric power generation. A dramatic decline in burrowing mayfly (Hexagenia ) populations following lake man...
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1. The life histories and population dynamics of the burrowing mayflies Hexagenia limbata and H. rigida were examined from 1986 to 1988 in four regions of an impounded lake in northern Manitoba, Canada. 2. Bottom temperatures reached 15-20-degrees-C, but ice-free periods of 4-6 months resulted in an...
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Emerging insects were monitored every 10 days between early May and late August 1993, from tidal pools in three coastal salt marshes on Prince Edward Island, Canada. The salt marsh pools ranged from about 1 m(2) to > 1,000 m(2) in surface area, and had salinities ranging from 11-27parts per thous...
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High levels of azinphos-methyl (0.4–0.8 μg/L) were detected in the Wilmot River, Prince Edward Island, Canada, following runoff from an agricultural field after a heavy rainfall on 19 July 2002. Benthic macroinvertebrate abundance and diversity were sharply lower in samples collected 1 d after th...