Claim · model-written summary
Total seed-eating waterfowl mass increased 82%.
Verbatim
e0“total mass of seed-eating waterfowl also increased 82%”
Title
Joseph P. Fleskes; Brian J. Halstead; Michael L. Casazza; et al. Journal of Fish and Wildlife Management 2012. doi:10.3996/022012-jfwm-014
Other claims from this paper (13)
- Observation Conventionally harvested Sacramento Valley fields had a posterior mean waste rice seed mass density of 388 kg/ha in 2010.
- Observation Stripper-head harvested Sacramento Valley fields had a posterior mean waste rice seed mass density of 245 kg/ha in 2010.
- Association Conventional-field waste seed density in 2010 was nearly identical to its mid-1980s estimate.
- Association Stripped-field waste seed density in 2010 was 36% lower than its mid-1990s estimate.
- Observation Stripper-head harvesting covered 18% of SACV fields in 2010, versus 9–15% in the mid-1990s and none in the mid-1980s.
- Observation Planted rice area increased by 50%.
- Association Total postharvest waste rice seed mass in SACV was 43% greater in 2010 than in the mid-1980s.
- Association The waste rice seed to waterfowl mass ratio was 21% smaller in 2010 than in the mid-1980s.
- Association Postharvest waste rice density in SACV fields fell within the range reported for MAV fields.
- Association Estimated waste rice seed density available to wintering waterfowl in SACV was about 5–30 times recent MAV estimates.
- Mechanism Greater seed loss in MAV was attributed to a lag between harvest and waterfowl use there.
- Mechanism Increased stripper-head harvester use would reduce waste rice food for waterfowl.
- Recommendation The authors recommend tracking rice area, harvest method, postharvest treatment and farming practice impacts for conservation planning.
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