Description

Populations of North American breeding scoters appear to be declining, however a large degree of uncertainty remains around population size estimates and trends due to challenges related to surveying this group of sea ducks. From 2017-2019, The Canadian Wildlife Service conducted helicopter surveys for breeding scoters in six study areas across Northern Canada: Lynx Lake, NWT (2017-2019), Little Duck Lake, Manitoba (2017), Ramparts River Wetland, NWT (2017), Yellowknife, NWT (2018), North Lynx Lake, NWT (2019), and the George River, QC (2019). Within each study area, we surveyed 20-26 5x5 km plots, selected using a random stratified sampling design. The surveys were conducted in June each year (range: June 8-22) to coincide with scoter nest initiation and early incubation period. We used a double dependent observer approach (see supplemental information) and we identified all observations of primary species (scoters, scaup, mergansers, Long-tailed ducks) to species and sex when possible. We identified and recorded observations of non-focal species including all other waterfowl, all conspicuous waterbirds and shorebirds, and any observable mammalian species. Complete metadata is available in downloadable files. CWS-North DatasetID 085_0

Resources

Name	Format	Description	Link
scoter_experimental_surveys_2017-2019_DataDictionary_DictionaireDeDonnees	CSV		https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2Fscoter-experimental-surveys_-_nt_-_mb_-_qc_-2017-2019%20%2Fscoter_experimental_surveys_2017-2019_DataDictionary_DictionaireDeDonnees.csv
scoter_experimental_surveys_2017-2019_Data_Donnees	CSV		https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2Fscoter-experimental-surveys_-_nt_-_mb_-_qc_-2017-2019%20%2Fscoter_experimental_surveys_2017-2019_Data_Donn%C3%A9es.csv
scoter_experimental_surveys_2017_2019.gdb.zip	Unknown		https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2Fscoter-experimental-surveys_-_nt_-_mb_-_qc_-2017-2019%20%2Fscoter_experimental_surveys_2017_2019.gdb.zip
scoter_experimental_surveys_2017_2019.kmz	Unknown		https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2Fscoter-experimental-surveys_-_nt_-_mb_-_qc_-2017-2019%20%2Fscoter_experimental_surveys_2017_2019.kmz
scoter-experimental-surveys-2017-2019-Metadata-Metadonnées.txt	TXT		https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2Fscoter-experimental-surveys_-_nt_-_mb_-_qc_-2017-2019%20%2Fscoter-experimental-surveys-2017-2019-Metadata-Metadonn%C3%A9es.txt
scoter_experimental_surveys_2017-2019_OtherCodes_AutresCodes.csv	CSV		https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2Fscoter-experimental-surveys_-_nt_-_mb_-_qc_-2017-2019%20%2Fscoter_experimental_surveys_2017-2019_OtherCodes_AutresCodes.csv
scoter_experimental_surveys_2017-2019_SpeciesCodes_CodesDEspeces.csv	CSV		https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2Fscoter-experimental-surveys_-_nt_-_mb_-_qc_-2017-2019%20%2Fscoter_experimental_surveys_2017-2019_SpeciesCodes_CodesDEspeces.csv
View ECCC Data Mart (English)	HTML		https://data-donnees.az.ec.gc.ca/data/species/assess/scoter-experimental-surveys_-_nt_-_mb_-_qc_-2017-2019%20?lang=en
View ECCC Data Mart (French)	HTML		https://data-donnees.az.ec.gc.ca/data/species/assess/scoter-experimental-surveys_-_nt_-_mb_-_qc_-2017-2019%20?lang=fr

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