Pre- and post- construction studies in Saskatchewan, Alberta and British Columbia progress report. SJ Guinn, TP Sankowski and RB Burns
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TextPublication details: 1984Online resources: Abstract: In 1983, pre- and post-construction studies were conducted at the Arnold, Stockton and Crane Lake projects in Saskatchewan, at the Kitsim project in Alberta and at the Chilanko Marsh project in British Columbia. The Arnold Project was constructed during the 1981 field season. Pre-construction data were collected in 1979 and 1980 and post-construction data in 1982 and 1983. Numbers of indicated breeding pairs (I.B.P.) increased from an average of 64 to 149 after construction. However, numbers of broods remained similar between pre-and post-construction phases. An average density of 18.7 I.B.P./ha were observed prior to construction compared to 4.0 I.B.P./ha after construction. We located an average density of 10.5 nests/ha on nesting islands. Seventy-seven percent of the nests located were successful.Development had little effect on water chemistry. Numbers of nektonic invertebrates were lower after construction. However, yearly fluctuations in benthic invertebrate numbers could not
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In 1983, pre- and post-construction studies were conducted at the Arnold, Stockton and Crane Lake projects in Saskatchewan, at the Kitsim project in Alberta and at the Chilanko Marsh project in British Columbia. The Arnold Project was constructed during the 1981 field season. Pre-construction data were collected in 1979 and 1980 and post-construction data in 1982 and 1983. Numbers of indicated breeding pairs (I.B.P.) increased from an average of 64 to 149 after construction. However, numbers of broods remained similar between pre-and post-construction phases. An average density of 18.7 I.B.P./ha were observed prior to construction compared to 4.0 I.B.P./ha after construction. We located an average density of 10.5 nests/ha on nesting islands. Seventy-seven percent of the nests located were successful.Development had little effect on water chemistry. Numbers of nektonic invertebrates were lower after construction. However, yearly fluctuations in benthic invertebrate numbers could not