Dataset Identification:
Resource Abstract:
- description: Colonial seabirds (murres, cormorants, gulls, puffins, and kittiwakes) were monitored along the Pacific Coast
of the Becharof National Wildlife Refuge (NWR) to estimate population size, breeding chronology, and/or reproductive success
during the 2001 breeding season. The target species monitored were common (Uria aalge) and thickbilled (U lomvia) murres;
red-faced (Phalacrocorax urile) and double-crested (P. aurtitis) cormorants were also observed. These data were compared to
wildlife damage assessment data collected in 1989-1992 as a result of the 1989 T/V Exxon Valdez oil spill. The primary colony
surveyed was Puale Bay Colony. Both land-based and sea-based census data were collected for the Puale Bay colony. The mean
population count was 2,197 murres for the sea-based count and 1,265 murres for the land-based counts. We found significant
differences in the murre population for both sea-based and land-based surveys over the years (1989-92, 1999, 2001). Sea-based
surveys of plots were also performed at Oil Creek and Cape Unalishagvak. Murre population counts for these two colonies declined
from 35% to 54% from the period 1989 to 1992 to 2001. Similarly, the black-legged kittiwakes (Rissa tridactyla) count of 721
at Cape Unalishagvak was lower than counts from 1989 to 1992 by 35%. A small doublecrested cormorant colony was located at
Portage Creek. At Puale Bay we monitored 701 common murre sites on 17 plots and 26 thick-billed murre sites on five plots
for productivity measures. The mean hatch date for common murre was 8 August 2001 compared to a mean hatch date in 1992 of
17 August. Hatch date in 2001 was significantly earlier than the mean hatch date in 1992 (p < 0.001). We documented a fledging
success of 0.92 (0.04) and productivity ratio of 0.76 (0.06) for common murres in 2001 that were significantly higher than
the values documented in 1992. Similar improvements in reproductive parameters were noted for the 26 thickbilled murre sites
monitored. We monitored 109 red-faced cormorant nests and seven double-crested cormorants nests. Mean hatch date for red-faced
cormorants was 18 July 2001 and 1 August 2001 for double-crested cormorants. Red-faced cormorants productivity in 2001 was
1.7 (0.2) chicks fledged / nest attempts.; abstract: Colonial seabirds (murres, cormorants, gulls, puffins, and kittiwakes)
were monitored along the Pacific Coast of the Becharof National Wildlife Refuge (NWR) to estimate population size, breeding
chronology, and/or reproductive success during the 2001 breeding season. The target species monitored were common (Uria aalge)
and thickbilled (U lomvia) murres; red-faced (Phalacrocorax urile) and double-crested (P. aurtitis) cormorants were also observed.
These data were compared to wildlife damage assessment data collected in 1989-1992 as a result of the 1989 T/V Exxon Valdez
oil spill. The primary colony surveyed was Puale Bay Colony. Both land-based and sea-based census data were collected for
the Puale Bay colony. The mean population count was 2,197 murres for the sea-based count and 1,265 murres for the land-based
counts. We found significant differences in the murre population for both sea-based and land-based surveys over the years
(1989-92, 1999, 2001). Sea-based surveys of plots were also performed at Oil Creek and Cape Unalishagvak. Murre population
counts for these two colonies declined from 35% to 54% from the period 1989 to 1992 to 2001. Similarly, the black-legged kittiwakes
(Rissa tridactyla) count of 721 at Cape Unalishagvak was lower than counts from 1989 to 1992 by 35%. A small doublecrested
cormorant colony was located at Portage Creek. At Puale Bay we monitored 701 common murre sites on 17 plots and 26 thick-billed
murre sites on five plots for productivity measures. The mean hatch date for common murre was 8 August 2001 compared to a
mean hatch date in 1992 of 17 August. Hatch date in 2001 was significantly earlier than the mean hatch date in 1992 (p <
0.001). We documented a fledging success of 0.92 (0.04) and productivity ratio of 0.76 (0.06) for common murres in 2001 that
were significantly higher than the values documented in 1992. Similar improvements in reproductive parameters were noted for
the 26 thickbilled murre sites monitored. We monitored 109 red-faced cormorant nests and seven double-crested cormorants nests.
Mean hatch date for red-faced cormorants was 18 July 2001 and 1 August 2001 for double-crested cormorants. Red-faced cormorants
productivity in 2001 was 1.7 (0.2) chicks fledged / nest attempts.
Citation
- Title Populations and productivity of seabirds on the pacific coast of Becharof National Wildlife Refuge.
-
- creation Date
2018-05-10T19:24:48.364354
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Metadata data stamp:
2018-08-06T20:12:39Z
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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 2018-08-06T20:12:39Z
Metadata contact
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pointOfContact
- organisation Name
CINERGI Metadata catalog
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- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
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utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:4a82b0c9-ef9d-4bf5-9d5d-bdb91d85e145
Metadata record format is ISO19139 XML (MD_Metadata)