Table 1. Density of all dabbling ducks (Anatini; ducks/ha/site/survey;, SE) and those feeding in 0.5-ha plots supplemented in mid-December 2008 with low (50 kg/ha), medium (250 kg/ha), or high (550 kg/ha) densities of Japanese millet (Echinochloa frumentacea) observed from mid-December 2008—late February 2009 (Winter) and mid-December 2008–early January 2009 (Early winter) in 4 experimental wetlands in eastern Mississippi, western Tennessee, and the Mississippi Alluvial Valley, USA.
Millet Density | |||||||
---|---|---|---|---|---|---|---|
Low | Medium | High | |||||
Taxa | Period | SE | SE | SE | |||
Dabbling ducks | Winter | 44.4 | 14.6 | 46.1 | 6.7 | 63.1 | 17.6 |
Early winter | 49.1 | 22.5 | 66.7 | 18.3 | 124.0 | 68.7 | |
Feeding dabbling ducks | Winter | 18.3 | 7.0 | 21.2 | 4.9 | 27.1 | 9.2 |
Early winter | 20.9 | 14.6 | 24.6 | 9.0 | 50.6 | 29.5 |