Table 1 Samples of Gonatus fabricii and Todarodes sagittatus used in this study. ML – mantle length, W – mass, n – sample size
From: Insights on long-term ecosystem changes from stable isotopes in historical squid beaks
Gonatus fabricii | |||||||
|---|---|---|---|---|---|---|---|
Time series | Year | Area | Sampling: trawl/predator | ML, mm (min–max)1 | W, g (min–max)1 | n, individuals | n, subsections per individual (min–max) |
Late XIXth century2 | 1882 | Baffin Bay | Trawl | 285.0 | 396.6 | 1 | 17 |
1891 | 230.0 | 144.6 | 1 | 15 | |||
1900s | 1900 | Jan-Mayen (Nordic Seas) | Northern fulmar (Fulmarus glacialis) | 149.7–197.8 | 72.3–146.7 | 9 | 8–10 |
1930s | 1930 | Davis Strait | Greenland shark (Somniosus microcephalus) | 215.6, 217.8 | 181.7, 186.3 | 2 | 18 |
1936 | Baffin Bay | Shrimp trawl | 170.0–189.0 | 83.2–98.0 | 5 | 11–12 | |
1970s | 1975 | Baffin Bay | 186.0–223.0 | 70.3–146.1 | 5 | 12 | |
1977 | 154.0, 182.0 | 66.3, 83.9 | 2 | 12 | |||
1979 | 136.9, 172.0 | 58.9, 103.8 | 2 | 10 | |||
2000s | 2004 | ‘Alfredo 3’ trawl | 126.0–214.0 | 48.0–178.3 | 10 | 11–14 | |
2010s | 2014 | Nordic Seas3 | Sperm whale (Physeter microcephalus) | 180.3–218.2 | 116.7–187.1 | 10 | 15–17 |
Contemporary4 | 2016 | Baffin Bay, Davis Strait (both areas each year) | ‘Alfredo 3’ trawl | 238.0–325.0 | 218.0–294.0 | 5 | 13–17 |
2017 | 214.0–285.0 | 116.5–380.0 | 6 | 11–16 | |||
2019 | 230.0, 252.0 | 165.5, 255.7 | 2 | 14, 16 | |||
Todarodes sagittatus | |||||||
1840s | 1844 | Faroe Islands | Long-finned pilot whale (Globicephala melas) | 182.5–240.5 | 125.2–287.4 | 4 | 12–15 |
1880s | 1881 | Iceland | 177.5–249.4 | 115.1–320.5 | 10 | 12–15 | |
1890s | 1897 | Faroe Islands | 250.4–285.1 | 324.2–379.0 | 10 | 15–20 | |
Contemporary | 2016 | Ireland | Pelagic trawl | 256.0 | 357.0 | 1 | 15 |
2017 | 343.0 | 1051.0 | 1 | 21 | |||
2018 | 213.0 | 180.0 | 1 | 12 | |||
2023 | 209.0–405.0 | 188.0–1844.0 | 4 | 14–23 | |||