03cbd7d7-083e-451d-818f-fbe9aa726a84 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-23T12:02:21 creation ISO 19115 2016 Southern elephant seal demography 03cbd7d7-083e-451d-818f-fbe9aa726a84 The Southern Ocean has been disproportionately affected by climate change and is therefore an ideal place to study the influence of changing environmental conditions on ecosystems. Changes in the demography of predator populations are indicators of broader shifts in food-web structure, but long-term data are required to study these effects. Southern elephant seals (Mirounga leonina) from Macquarie Island have consistently decreased in population size while all other major populations across the Southern Ocean have recently stabilised or are increasing. Two long-term mark-recapture studies (1956-1967 and 1993-2009) have monitored this population, which provides an opportunity to investigate demographic performance over a range of climatic conditions. This provides insights on individual vital rates of known-age seals from Macquarie Island over extensively long timeseries. {"type": "Polygon", "coordinates": [[[158.7634, -54.7864], [158.9571, -54.7864], [158.9571, -54.478], [158.7634, -54.478], [158.7634, -54.7864]]]} 158.7634 158.9571 -54.7864 -54.478 Macquarie Island Mirounga leonina breeding population capital breeder demographic modelling mark-recapture studies predator demography predator ecology resight effort southern elephant seal README - data file structure and R-markdown instructions documentDigital TXT DATA ACCESS - download full data package (including code) [.zip 6MB] documentDigital ZIP Extreme polygyny results in intersex differences in age-dependent survival of a highly dimorphic marine mammal [related publication] documentDigital HTML Climate influences on female survival in a declining population of southern elephant seals (Mirounga leonina) [related publication] documentDigital HTML ORCID ID documentDigital HTML ORCID ID documentDigital HTML ORCID ID documentDigital HTML Unnamed resource documentDigital License Graphic PNG Unnamed resource documentDigital HTML