profile

Prof Sascha Hooker:
Professor



I have broad interests in foraging and diving behaviour of marine mammals, and the physiological constraints underlying this.  I am keen to apply my work wherever possible toward conservation biology, and have worked on introduced pest species, the effect of anthropogenic sounds, contaminants, and the development of marine protected areas. 

 



My research concerns specifically the foraging and diving behaviour of marine predators and more generally how this can inform conservation planning in the ocean.

Current Projects

Marine predator foraging ecology

Work on predator foraging often relies on inference from dive profiles. Using a miniature video camera attached to the animal we can view the foraging space of a diving animal and test previously used proxies for foraging behaviour. The identification of foraging areas and assessment of the stability of these over time and space enable us to investigate variability in foraging success and the criteria driving this (whether anthropogenically or environmentally induced).

Diving physiology

The mechanisms allowing marine mammals to avoid problems associated with diving to depth are still only partially understood. Recent deaths of beaked whales associated with sonar exposure appear to be due to decompression sickness. I am interested in how problems such as shallow-water blackout and decompression sickness are avoided, and use modelling approaches to determine risk based on dive profiles.

Conservation planning and marine protected areas

An ecosystem-approach is widely advocated in conservation planning but ecosystem modelling approaches, despite their sophistication, often suffer from a lack of source data or inherent uncertainties. An alternative is to use spatially explicit management. I am interested in the application of such marine reserve areas to higher predators.

source: symbiosis


Recent Publications:

5 (of 59 /dk/atira/pure/researchoutput/status/published available) for sh43 (source: University of St Andrews PURE)
Please click title of any item for full details

Drivers and constraints on offshore foraging in harbour seals Sascha Kate Hooker, L. Mikkelsen, A. van Neer, J. Teilmann, U. Siebert, Mark Johnson
Scientific Reports 2021 vol. 11
Fur seals do, but sea lions don’t – cross taxa insights into exhalation during ascent from dives Sascha Kate Hooker, Russel Andrews, John Arnould, Marthan Bester, Randall Davis, Stephen Insley, Nick Gales, Simon Goldsworthy, Chris McKnight
Philosophical Transactions of the Royal Society. B, Biological Sciences 2021 vol. 376
Marine mammal conservation Sarah E. Nelms, Joanna Alfaro-Shigueto, John P. Y. Arnould, Isabel C. Avila, Susan Bengtson Nash, Elizabeth Campbell, Matt Carter, Timothy Collins, Rohan J. C. Currey, Camila Domit, Valentina Franco-Trecu, Mariana M. P. B. Fuentes, Eric Gilman, Robert G. Harcourt, Ellen M. Hines, A. Rus Hoelzel, Sascha Kate Hooker, David W. Johnston, Nachiket Kelkar, Jeremy J. Kiszka, Kristin L. Laidre, Jeffrey C. Mangel, Helene Marsh, Sara M. Maxwell, Aubrie B. Onoufriou, Daniel M. Palacios, Graham J. Pierce, Louisa S. Ponnampalam, Lindsay Porter, Debbie JF Russell, Karen A. Stockin, Dipani Sutaria, Nina Wambiji, Caroline R. Weir, Ben Wilson, Brendon J. Godley
Endangered Species Research 2021 vol. 44 pp. 291-325
Best practice guidelines for cetacean tagging Russel D. Andrews, Robin W. Baird, John Calambokidis, Caroline E. C. Goertz, Frances M. D. Gulland, Mads-Pieter Heide-Jorgensen, Sascha Kate Hooker, Mark Johnson, Bruce Mate, Yoko Mitani, Douglas P. Nowacek, Kylie Owen, Lori T. Quakenbush, Stephen Raverty, Jooke Robbins, Gregory S. Schorr, Olga V. Shpak, Forrest I. Townsend, Marcela Uhart, Randall S. Wells, Alexandre N. Zerbini
Journal of Cetacean Research and Management 2019 vol. 20 pp. 27-66