2007 Summaries of Wildlife Research Findings - Minnesota State ...

Table 2. Sampling rates by Ecological Classification System section for Minnesota’s ring-necked duck breeding- pair survey, June 2004 – 2007.
~Area a Sampling rate (%)
Ecological Classification System section Habitat classes 2004 2005 2006-2007 2004 2005 2006-2007
W & S Superior Uplands b 1,2 1,638 2,461 2,218 1.1 0.9 0.9
Northern Superior Uplands 1,2 1,810 4,648 4,209 0.7 0.8 0.8
N Minnesota & Ontario Peatlands 1,2 1,817 2,737 2,389 1.4 1.3 1.3
N Minnesota Drift & Lake Plains 1,2 5,048 8,383 7,145 1.5 1.1 1.1
Minnesota & NE Iowa Morainal 1,2 3,510 4,033 3,561 1.4 0.9 0.9
Lake Agassiz, Aspen Parklands 1,2 316 363 340 4.7 2.2 2.4
a Number of Public Land Survey sections in the ECS section(s).
b Western and Southern Superior Uplands sections combined due to the small area of the Southern Superior Uplands occurring in the survey area.
Table 3. Social status of the indicated pairs observed in the Minnesota ring-necked duck breeding pair survey area, June 2004-2007.
Year
2004 a
Habitat
class No. of plots
Indicated pairs
Total
ducks n % Pairs % Lone males
% Flocked
males
1,2 200 278 160 57.5 18.1 24.4
2005 b 1,2 230 147 92 35.9 28.2 35.9
2005 3,4 21 11 7 57.1 0.0 42.9
2006 c
1,2 200 279 167 43.7 27.6 28.7
2006 3,4 50 4 3 33.3 66.7 0.0
2007 d
1,2 200 152 137 57.7 25.5 16.8
2007 3,4 50 13 6 16.7 16.7 66.7
a
Survey conducted 6 – 17 June.
b
Survey conducted 12 – 24 June.
c
Survey conducted 6 – 16 June.
d
Survey conducted 5 – 13 June.
475