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Waterfowl Breeding Population Survey: Southern and Central Alberta, May 2008

机译：水禽繁殖人口调查：艾伯塔省南部和中部，2008年5月

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The 2008 Waterfowl Breeding Population and Habitat Survey of Southern and Central Alberta was conducted from 7-25 May and was consistent in design and coverage to previous surveys. Overall, habitat conditions for breeding waterfowl in 2008 were generally worse than conditions in 2007 in Prairie Alberta and similar to last year in the Parklands. The total pond estimate was 848,700 ponds in Southern Alberta. This was decline of 30.7% below last year's estimate of 1,225,400 ponds but remained 14.9% above the long-term average. The total pond estimate for Central Alberta was 584,500 ponds. This was a decline of 10% from last years estimate of 649,100 ponds and an increase of 17.1% from the long-term average.The estimate of total ducks from the 2008 Waterfowl Breeding Population and Habitat Survey for strata 26-29 (Southern Alberta) was 4,207,200, which is a 2.1% decline from last year's estimate of 4,295,900, a 30.7% increase from the 10- year mean and a 2.3 % decline from the 1955-2007 average. Mallard (Anas platyrhynchos) abundance was 875,200 birds which was 5.4% above last years estimate of 830,200, 9.7% above the 10- year mean and 19.7% below the long-term mean. Blue-winged teal (A. discors) estimated abundance was 817,700 birds which were the 4th highest since 1955, 22.3% greater than last years estimate of 668,500, 64.6% above the 10- year mean and 33.1% above the long- term mean. Estimates for northern pintails (Anas acuta) were 240,000 birds which is a 26% decline from last year, a 7.2% increase from the 10-year mean and a 66.3% decline from the long- term mean. The estimate of total ducks from the 2008 Waterfowl Breeding Population and Habitat Survey for strata 75-76 (Central Alberta) was 1,565,700 which is an 8.9% decline from last year's estimate of 1,719,200, a 3.6% decline from the long- term mean and a 4.3 % increase from the 1955-2007 average. Mallard (Anas platyrhynchos) abundance was 359,400 birds which was 10.6% above last years estimate of 324,900, a decline of 15.1% from the 10- year mean and 11.6% below the long- term mean. Blue-winged teal (A. discors) estimated abundance was 198,600 birds which was 25.5% below last years estimate of 266,600 birds, 5.2% above the 10- year mean and 25.7% above the long- term mean. Estimates for northern pintails (anas acuta) was 18,800 birds which was a 66.6% decline from last year, a 9.5% decline from the 10- year mean and a 11.6% decline from the long-term mean. Poor to fair production is expected in the Prairies and fair production is expected in the Parklands of Alberta this year.

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