Vital rate estimates for the common eider Somateria mollissima, a data-rich exemplar of the seaduck tribe

Please note the following update (also provided in the updated README):

** update 2023/02/20 **

> subspecies 'borealis ' corrected to 'borealis' (i.e. removed space) for ID's 20 and 21 in MASTER and master sheet of full database

> replaced blank cell with 'N/A' for ID 80 in SUBhs and hatch success sheet of full database

> corrected reversed latitude and longitude for ID 62 (which are incorrect in source) in MASTER and master sheet of full database

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This results in _corrected versions of three items (the originals are retained for clarity):

• Nicol-Harper_202110_VitalRates_dataset_SUBhs_corrected.csv
• Nicol-Harper_202110_VitalRates_dataset_MASTER_corrected.csv
• Nicol-Harper_202110_VitalRates_dataset_FullDatabase_corrected.xlsx

... and an _updated README:

• Nicol-Harper_202110_VitalRates_README_updated.txt

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The database is available in full as an XLSX spreadsheet (including header comments providing further information) or as a series of CSV files for each sheet (comments not included, although they are provided in the dataset README .txt file). 

The 'master' sheet provides study-level information, with each study being assigned a unique identifier: numeric 1–127 for published studies, upper case A-B for unpublished contributed datasets (ID 127/Ragnarsdóttir et al., 2021 was contributed through the call for data but is published online, as an Icelandic-language publication not accessible through English-language searches), and lower case aa-ee for combinations of datasets reported in published studies (such as the combination: "Nyegaard, 2004 [thesis]; H.G. Gilchrist unpubl. data" reported in Gilliland et al., 2009, Table 1). Estimates and associated metadata for each vital rate are then recorded in separate sheets, with the ID column relating back to the studies in the 'master' sheet. Vital rate sheets include columns to replace imprecise overall study-level population growth rate, geographical coordinates, and subspecies entries where appropriate; for example, if the study provided vital rate data for each of several locations. Further information specific to each column can be found in comment boxes associated with the headers (.xlsx file only), and both studies and estimates are further annotated in 'Comments' columns where relevant. A text file with an English translation by AP of the summary from ID 127/Ragnarsdóttir et al., 2021 is also provided (see Nicol-Harper_202110_VitalRates_RagnarsdottirTranslation.txt).

The two forms of breeding propensities for 2- to 5-year-olds correspond to two of the recruitment quantities discussed in Pradel & Lebreton (1999): the probability of having recruited at a given age, which sums to 1 across all possible ages of recruitment, is equivalent to their α_i (specifically, the second version described on p. S80); breeding propensities at age i (2 ≤ i ≤ 5) correspond to their a_i. Vital rates referring to subadults are assumed to refer to both sexes, whereas adult survival may refer to either sex or both (specified in the database), while adult breeding propensity has thus far only been estimated for females.

• Pradel, R., & Lebreton, J.-D. (1999). Comparison of different approaches to the study of local recruitment of breeders. Bird Study, 46(sup1), S74–S81. https://doi.org/10.1080/00063659909477234
• Ragnarsdóttir, S. B., Thorstensen, S., & Metúsalemsson, S. (2021). Fuglalíf í óshólmum Eyjafjarðarár: könnun 2020 með samanburði við fyrri ár. [The birdlife of the delta area of river Eyjafjaðará, N-Iceland: The results of a survey in year 2020 in comparison to former years.] Náttúrufræðistofnun Íslands NÍ21001. 62 pp. (In Icelandic). Available at: https://utgafa.ni.is/skyrslur/2021/NI-21001.pdf accessed 5^th October 2021.
• Gilliland, S. G., Grant Gilchrist, H., Rockwell, R. F., Robertson, G. J., Savard, J.-P. L., Merkel, F., & Mosbech, A. (2009). Evaluating the Sustainability of Harvest Among Northern Common Eiders Somateria mollissima borealis in Greenland and Canada. Wildlife Biology, 15(1), 24–36. https://doi.org/10.2981/07-005

Funding provided by: Natural Environment Research Council
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100000270
Award Number: NE/L002531/1

Funding provided by: Environment and Climate Change Canada
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100008638
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Funding provided by: Natural Sciences and Engineering Research Council of Canada
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100000038
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Funding provided by: New Brunswick Wildlife Trust Fund*
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Funding provided by: Sir James Dunn Wildlife Research Fund*
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