How does NOAA Fisheries in the US estimate its total grey seal population size?
Answer
By applying Canadian total-to-pup ratios to US pup counts
US population estimates are derived by counting pups at local breeding colonies and then applying the known total-to-pup ratio established from the Canadian population data.
Related Questions
What is the current global IUCN status for the grey seal (*Halichoerus grypus*)?Which specific location hosts the world's largest grey seal colony?Approximately what percentage of the entire European grey seal population is represented by the British population alone (based on 2020 estimates)?What was the approximate minimum population count for the Baltic Sea grey seals during the 1970s following historical declines?Approximately how much weight can grey seal pups gain per day while nursing?How does NOAA Fisheries in the US estimate its total grey seal population size?What distinctive facial profile feature characterizes the grey seal?What was the reported annual growth rate for the Atlantic Canada grey seal population between 2016 and 2021?What specific pollutant is noted as being concentrated in the blubber of Baltic Sea seals, affecting their systems?What is the term for the creamy-white, woolly coat that grey seal pups possess at birth?When comparing regional recovery scales, what was the starting population estimate for Baltic seals at the start of the 20th century?