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Abundance of grey seals in Canadian waters, assessed as a single stock. Derived from aerial surveys, corrected for survey timing, coverage, and haul-out proportion.

Usage

data(grey_seals)

data(grey_seals_2021)

Format

An ea_data object with:

data

A tibble:

year

Year (numeric)

value

Median estimate (count)

low

Lower 95percent credible interval

high

Upper 95percent credible interval

meta

A named list with:

data_type

"Grey Seal Abundance"

region

"Scotian Shelf"

location_descriptor

"Sable Island / Scotian Shelf"

units

"count"

species

"Halichoerus grypus"

source_citation

Hammill et al. (2023)

original_value_col

Character. "median"

An object of class ea_data of length 1.

Source

Hammill et al. (2023), see data-raw/grey-seals/grey-seals.R

Author

Andrew Edwards, Nell den Heyer