Waterfowl Population Status, 2012
In the traditional survey area, which includes strata 1‒18, 20‒50, and 75‒77, the total duck population estimate was 48.6 ± 0.8 [SE] million birds. This estimate represents a 7% increase over last year's estimate of 45.6 ± 0.8 million birds and was 43% above the long-term average (1955‒2011). E...
Main Authors: | , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
DigitalCommons@University of Nebraska - Lincoln
2012
|
Subjects: | |
Online Access: | https://digitalcommons.unl.edu/usfwspubs/409 https://digitalcommons.unl.edu/context/usfwspubs/article/1408/viewcontent/StatusReport2012_final.pdf |
id |
ftunivnebraskali:oai:digitalcommons.unl.edu:usfwspubs-1408 |
---|---|
record_format |
openpolar |
spelling |
ftunivnebraskali:oai:digitalcommons.unl.edu:usfwspubs-1408 2023-11-12T04:23:19+01:00 Waterfowl Population Status, 2012 Fleming, Kathy Garrettson, Pamela R. Rhodes, Walt Zimpfer, Nathan 2012-07-20T07:00:00Z application/pdf https://digitalcommons.unl.edu/usfwspubs/409 https://digitalcommons.unl.edu/context/usfwspubs/article/1408/viewcontent/StatusReport2012_final.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/usfwspubs/409 https://digitalcommons.unl.edu/context/usfwspubs/article/1408/viewcontent/StatusReport2012_final.pdf US Fish & Wildlife Publications text 2012 ftunivnebraskali 2023-10-30T09:48:45Z In the traditional survey area, which includes strata 1‒18, 20‒50, and 75‒77, the total duck population estimate was 48.6 ± 0.8 [SE] million birds. This estimate represents a 7% increase over last year's estimate of 45.6 ± 0.8 million birds and was 43% above the long-term average (1955‒2011). Estimated mallard (Anas platyrhynchos) abundance was 10.6 ± 0.3 million birds, which was 15% above the 2011 estimate of 9.2 ± 0.3 million birds and 40% above the longterm average. Estimated abundance of gadwall (A. strepera; 3.6 ± 0.2 million) was similar to the 2011 estimate and 96% above the long-term average. Estimated abundance of American wigeon (A. americana; 2.1 ± 0.1 million) was similar to the 2011 estimate and 17% below the long-term average. The estimated abundance of green-winged teal (A. crecca) was 3.5 ± 0.2 million, which was 20% above the 2011 estimate and 74% above their long-term average. The estimate of bluewinged teal abundance (A. discors) was 9.2 ± 0.4 million, which was similar to the 2011 estimate and 94% above their long-term average. The estimate for northern pintails (A. acuta; 3.5 ± 0.2 million) was 22% below the 2011 estimate, and 14% below the long-term average. The northern shoveler estimate (A. clypeata) was 5.0 ± 0.3 million, which was similar to the 2011 estimate and 111% above the long-term average. Redhead abundance (Aythya americana; 1.3 ± 0.1 million) was similar to the 2011 estimate and 89% above the long-term average. The canvasback estimate (A. valisineria; 0.8 ± 0.07 million) was similar to the 2011 estimate and 33% above the long-term average. Estimated abundance of scaup (A. affinis and A. marila combined; 5.2 ± 0.3 million) was 21% above the 2011 estimate and similar to the long-term average. Habitat conditions during the 2012 Waterfowl Breeding Population and Habitat Survey were characterized by average to below average moisture, a mild winter, and an early spring across the southern portion of the traditional and eastern survey areas. Northern habitats of the survey areas ... Text Northern Shoveler Shoveler University of Nebraska-Lincoln: DigitalCommons@UNL Canada |
institution |
Open Polar |
collection |
University of Nebraska-Lincoln: DigitalCommons@UNL |
op_collection_id |
ftunivnebraskali |
language |
unknown |
description |
In the traditional survey area, which includes strata 1‒18, 20‒50, and 75‒77, the total duck population estimate was 48.6 ± 0.8 [SE] million birds. This estimate represents a 7% increase over last year's estimate of 45.6 ± 0.8 million birds and was 43% above the long-term average (1955‒2011). Estimated mallard (Anas platyrhynchos) abundance was 10.6 ± 0.3 million birds, which was 15% above the 2011 estimate of 9.2 ± 0.3 million birds and 40% above the longterm average. Estimated abundance of gadwall (A. strepera; 3.6 ± 0.2 million) was similar to the 2011 estimate and 96% above the long-term average. Estimated abundance of American wigeon (A. americana; 2.1 ± 0.1 million) was similar to the 2011 estimate and 17% below the long-term average. The estimated abundance of green-winged teal (A. crecca) was 3.5 ± 0.2 million, which was 20% above the 2011 estimate and 74% above their long-term average. The estimate of bluewinged teal abundance (A. discors) was 9.2 ± 0.4 million, which was similar to the 2011 estimate and 94% above their long-term average. The estimate for northern pintails (A. acuta; 3.5 ± 0.2 million) was 22% below the 2011 estimate, and 14% below the long-term average. The northern shoveler estimate (A. clypeata) was 5.0 ± 0.3 million, which was similar to the 2011 estimate and 111% above the long-term average. Redhead abundance (Aythya americana; 1.3 ± 0.1 million) was similar to the 2011 estimate and 89% above the long-term average. The canvasback estimate (A. valisineria; 0.8 ± 0.07 million) was similar to the 2011 estimate and 33% above the long-term average. Estimated abundance of scaup (A. affinis and A. marila combined; 5.2 ± 0.3 million) was 21% above the 2011 estimate and similar to the long-term average. Habitat conditions during the 2012 Waterfowl Breeding Population and Habitat Survey were characterized by average to below average moisture, a mild winter, and an early spring across the southern portion of the traditional and eastern survey areas. Northern habitats of the survey areas ... |
format |
Text |
author |
Fleming, Kathy Garrettson, Pamela R. Rhodes, Walt Zimpfer, Nathan |
spellingShingle |
Fleming, Kathy Garrettson, Pamela R. Rhodes, Walt Zimpfer, Nathan Waterfowl Population Status, 2012 |
author_facet |
Fleming, Kathy Garrettson, Pamela R. Rhodes, Walt Zimpfer, Nathan |
author_sort |
Fleming, Kathy |
title |
Waterfowl Population Status, 2012 |
title_short |
Waterfowl Population Status, 2012 |
title_full |
Waterfowl Population Status, 2012 |
title_fullStr |
Waterfowl Population Status, 2012 |
title_full_unstemmed |
Waterfowl Population Status, 2012 |
title_sort |
waterfowl population status, 2012 |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
2012 |
url |
https://digitalcommons.unl.edu/usfwspubs/409 https://digitalcommons.unl.edu/context/usfwspubs/article/1408/viewcontent/StatusReport2012_final.pdf |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Northern Shoveler Shoveler |
genre_facet |
Northern Shoveler Shoveler |
op_source |
US Fish & Wildlife Publications |
op_relation |
https://digitalcommons.unl.edu/usfwspubs/409 https://digitalcommons.unl.edu/context/usfwspubs/article/1408/viewcontent/StatusReport2012_final.pdf |
_version_ |
1782338139901132800 |