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Communication at the NABS Annual meeting, Keystone, 2000
(205) MAYFLY (EPHEMEROPTERA) COMMUNITY STRUCTURE IN RELATION TO STREAM SIZE AND LAND USE IN STREAMS IN NEW BRUNSWICK, CANADA.
R.A. Sutherland1, D.J. Giberson2, and R.A. Cunjak1. 1Department of Biology, University of New Brunswick, Fredericton, New Brunwick, Canada E3B 6E1, 2Department of Biology, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada C1A 4P3
We studied the distribution and diversity of mayflies in streams of different size in and near Fundy National Park in New Brunswick, Canada. This order has been used as an indicator for water quality and the effects of land use practices. Within the National Park, streams are characterized by complete riparian cover and virtually no disturbance. However, most park streams arise outside of the park and may be affected by logging activities. The objective of this study was to compare mayfly community structure in stream sites of different size and land use practice. A total of eight sites were chosen on the Upper Salmon River and the Pollett River, representing replicate 1st, 2nd, 3rd and 4th order stream sites showing different logging history. Quantitative samplers (Surber and drift net) were used to collect mayfly nymphs over four seasons at each of the eight sites. At least ten genera in four families have been identified. Members of the family Ephemerellidae were more abundant in the small stream sites while Baetidae were more abundant in the large stream sites, but abundance of both was strongly related to logging history.
Presented at 8:30 AM on Wednesday, May 31, 2000 in Effects of Deforestation and Fire
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