Blar i Brage IMR på forfatter "Kershaw, Joanna"
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Aerial photogrammetry and tag-derived tissue density reveal patterns of lipid-store body condition of humpback whales on their feeding grounds
Aoki, Kagari; Isojunno, Saana; Bellot, Charlotte; Iwata, Takashi; Kershaw, Joanna; Akiyama, Yu; Martín López, Lucía M.; Ramp, Christian; Biuw, Martin; Swift, René; Wensveen, Paul J.; Pomeroy, Patrick; Narazaki, Tomoko; Hall, Ailsa J.; Sato, Katsufumi; Miller, Patrick J.O. (Peer reviewed; Journal article, 2021)Monitoring the body condition of free-ranging marine mammals at different life-history stages is essential to understand their ecology as they must accumulate sufficient energy reserves for survival and reproduction. ... -
Don't mind if I do: Arctic humpback whales respond to winter foraging opportunities before migration
Kettemer, Lisa Elena; Ramm, Theresia; Broms, Fredrik Björn; Biuw, Martin; Blanchet, Marie-Anne; Bourgeon, Sophie; Dubourg, Paul; Ellendersen, Anna C. J.; Horaud, Mathilde; Kershaw, Joanna; Miller, Patrick J. O.; Øien, Nils Inge; Pallin, Logan J.; Rikardsen, Audun H. (Peer reviewed; Journal article, 2023)Migration patterns are fundamentally linked to the spatio-temporal distributions of prey. How migrating animals can respond to changes in their prey's distribution and abundance remains largely unclear. During the last ... -
Multi-decadal environmental change in the Barents Sea recorded by seal teeth
de la Vega, Camille; Buchanan, Pearse J.; Tagliabue, Alessandro; Hopkins, Joanne E.; Jeffreys, Rachel M.; Frie, Anne Kirstine Højholt; Biuw, Martin; Kershaw, Joanna; Grecian, James; Norman, Louisa; Smout, Sophie; Haug, Tore; Mahaffey, Claire (Peer reviewed; Journal article, 2022)Multiple environmental forcings, such as warming and changes in ocean circulation and nutrient supply, are affecting the base of Arctic marine ecosystems, with cascading effects on the entire food web through bottom-up ... -
Multi-decadal trends in biomarkers in harp seal teeth from the North Atlantic reveal the influence of prey availability on seal trophic position
de la Vega, Camille; Kershaw, Joanna; Stenson, Garry B.; Frie, Anne Kirstine Højholt; Biuw, Martin; Haug, Tore; Norman, Louisa; Mahaffey, Claire; Smout, Sophie; Jeffreys, Rachel M. (Peer reviewed; Journal article, 2023)Arctic food webs are being impacted by borealisation and environmental change. To quantify the impact of these multiple forcings, it is crucial to accurately determine the temporal change in key ecosystem metrics, such as ...