Fig. 6

Example of eight years of unbroken reproductive history information, general space use and yearly light profiles for an adult female polar bear in Svalbard. Reproductive history: Winter classification as maternity denning (D1) or non-denning (D0) was based on capture information (CAPTURE), ST collar (ST) and GLS logger data (GLS). Captures with cubs of the year are shown as COY (indicating D1). This female was tagged with her first GLS at capture in 2012, and a new one at each subsequent capture. Thus, the data shown are from three GLS tags, with 4, 1, and 3 years of data. She received a ST collar in 2017 that provided data for one year. General space use: Seasonal centroids (autumn (Aug-Nov) in orange and spring (Feb–Apr) in blue) and capture locations (white diamond) are plotted for each winter on a longitude–latitude grid. Stippled vertical and horizontal lines denote mean seasonal longitudes and latitudes while density plots on each axis correspond to distribution from estimated twice daily light locations. ST collar GPS tracks are added when available (color-coded by season and black if outside these seasons). Yearly light profile: Black and white denote time of day with recorded darkness and light, respectively. Rug plots at the bottom of each panel depict successful location estimates. Hatched areas illustrate latitudes affected by equinox periods during spring (blue) and autumn (orange). Curved yellow lines illustrate the change in timing of twilight (approx. sunrise and sunset) at the most recent capture location throughout the year. Capture event timings are depicted as ‘C’ in white diamonds and with additional arrows if they occurred outside the plotting region