Dataset Identification:
Resource Abstract:
- description: Waterfowl breeding population surveys have been completed annually on the Arctic Coastal Plain of Alaska since
1986. Methods for the 2010 Arctic Coastal Plain Waterfowl Breeding Population Survey (ACP survey) were similar to those employed
since 2007, when a single survey was implemented to address objectives of two pre-existing surveys: the geographically comprehensive
1986 ACP survey conducted in mid-June to early July, and the geographically limited 1992-2006 North Slope Eider Survey, conducted
in early to mid June to target the early phenology and breeding range of eiders. The current redesigned ACP survey utilizes
a 57,336 km2 spatial coverage roughly equivalent to the previous ACP survey, but its timing is similar to the previous North
Slope Eider Survey. The current design also incorporates an annually-shifting transect grid, completed and repeated on a 4-year
rotational basis. The survey flown in 2010 completed the first 4-year set of the redesigned ACP survey. Due to a crewmember
family emergency the last one-half of the 2010 survey was delayed, which we suspect resulted in decreased precision of our
estimates for some species. Airborne data collection methods followed the Standard Operating Standards (U.S. Fish and Wildlife
Service and Canadian Wildlife Service 1987) utilized for breeding pair surveys by natural resource agencies throughout North
America. In this report we present spatial distribution, breeding densities and comparisons with Standard population size
using the entire new ACP survey area (57,336 km2). We restrict trend analyses to data from the northern coastal region that
corresponds to the former North Slope Eider Survey area (30,465 km2) because of the similarity in phenological timing of the
current survey and the former North Slope Eider Survey. We tested for population growth rates significantly greater or less
than 1.0 (with significance probability <0.10) for all survey years (1992-2010) and for the most recent 10 years (2001-2010).
Of these, the 1992-2010 growth rates for red-throated loon, and spectacled eider were <1.0, while those for yellowbilled
loon, scaup, king eider, greater white-fronted goose and tundra swan were >1.0. During the most recent 10 years, spectacled
eider had growth rates <1.0, while growth rates of scaup, greater white-fronted goose and tundra swan were >1.0. Indices
for greater white-fronted geese and tundra swans have been well above Standard levels for 4 consecutive years. The 2010 spectacled
eider index (6,286) was below the 18-year mean (6,526). Based on our results through 2010 we recommend a review of long-term
viability for the ACP breeding populations of spectacled eiders and red-throated loons. We include maps showing breeding density
isopleths for most species from composite 4-year survey data.; abstract: Waterfowl breeding population surveys have been completed
annually on the Arctic Coastal Plain of Alaska since 1986. Methods for the 2010 Arctic Coastal Plain Waterfowl Breeding Population
Survey (ACP survey) were similar to those employed since 2007, when a single survey was implemented to address objectives
of two pre-existing surveys: the geographically comprehensive 1986 ACP survey conducted in mid-June to early July, and the
geographically limited 1992-2006 North Slope Eider Survey, conducted in early to mid June to target the early phenology and
breeding range of eiders. The current redesigned ACP survey utilizes a 57,336 km2 spatial coverage roughly equivalent to the
previous ACP survey, but its timing is similar to the previous North Slope Eider Survey. The current design also incorporates
an annually-shifting transect grid, completed and repeated on a 4-year rotational basis. The survey flown in 2010 completed
the first 4-year set of the redesigned ACP survey. Due to a crewmember family emergency the last one-half of the 2010 survey
was delayed, which we suspect resulted in decreased precision of our estimates for some species. Airborne data collection
methods followed the Standard Operating Standards (U.S. Fish and Wildlife Service and Canadian Wildlife Service 1987) utilized
for breeding pair surveys by natural resource agencies throughout North America. In this report we present spatial distribution,
breeding densities and comparisons with Standard population size using the entire new ACP survey area (57,336 km2). We restrict
trend analyses to data from the northern coastal region that corresponds to the former North Slope Eider Survey area (30,465
km2) because of the similarity in phenological timing of the current survey and the former North Slope Eider Survey. We tested
for population growth rates significantly greater or less than 1.0 (with significance probability <0.10) for all survey
years (1992-2010) and for the most recent 10 years (2001-2010). Of these, the 1992-2010 growth rates for red-throated loon,
and spectacled eider were <1.0, while those for yellowbilled loon, scaup, king eider, greater white-fronted goose and tundra
swan were >1.0. During the most recent 10 years, spectacled eider had growth rates <1.0, while growth rates of scaup,
greater white-fronted goose and tundra swan were >1.0. Indices for greater white-fronted geese and tundra swans have been
well above Standard levels for 4 consecutive years. The 2010 spectacled eider index (6,286) was below the 18-year mean (6,526).
Based on our results through 2010 we recommend a review of long-term viability for the ACP breeding populations of spectacled
eiders and red-throated loons. We include maps showing breeding density isopleths for most species from composite 4-year survey
data.
Citation
- Title Waterfowl breeding population survey.
-
- creation Date
2018-05-12T04:18:57.890647
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Metadata data stamp:
2018-08-06T22:21:58Z
Resource Maintenance Information
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- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T22:21:58Z
Metadata contact
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pointOfContact
- organisation Name
CINERGI Metadata catalog
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- Contact information
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- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:cdb66c79-1753-41a9-8b64-7f22185eff3f
Metadata record format is ISO19139 XML (MD_Metadata)