USAP-DC

This project on emperor penguin populations will quantify penguin presence/absence, and colony size and trajectory, across the entire Antarctic continent using high-resolution satellite imagery. For a subset of the colonies, population estimates derived from high-resolution satellite images will be compared with those determined by aerial surveys - these results have been uploaded to MAPPPD (penguinmap.com) and are freely available for use. This validated information will be used to determine population estimates for all emperor penguin colonies through iterations of supervised classification and maximum likelihood calculations on the high-resolution imagery. The effect of spatial, geophysical, and environmental variables on population size and decadal-scale trends will be assessed using generalized linear models. This research will result in a first ever empirical result for emperor penguin population trends and habitat suitability, and will leverage currently-funded NSF infrastructure and hosting sites to publish results in near-real time to the public.

Person	Role
LaRue, Michelle	Investigator and contact
Ito, Emi	Co-Investigator
Jenouvrier, Stephanie	Co-Investigator

Antarctic Organisms and Ecosystems	Award # 1744989
Antarctic Organisms and Ecosystems	Award # 1744794

USAP-1744989_1

Deployment	Type
B343M	airborne survey

None in the Database

Repository	Title (link)	Format(s)	Status
USAP-DC	Detecting climate signals in populations: case of emperor penguin	Not Provided	exists
USAP-DC	Landfast ice: a major driver of reproductive success in a polar seabird	Not Provided	exists

1. Jenouvrier S., Iles D., Labrousse S., Landrum L., Garnier J., Caswell H., Barbraud C., Weimerskirch H., LaRue M., Ji R., Holland M. (2020). The Paris Agreement objectives might halt future declines of emperor penguins. Global Change Biology, 26: 1170-1184 (doi:10.1111/gcb.14864)
2. Labrousse S., Fraser A., Sumner M., Le Manach F., Sauser C., Horstmann I., Devane E., Delord K., Jenouvrier S., † and Christophe B†. (2021). Landfast ice: a major driver of reproductive success in a polar seabird. Biology Letter, 7: 20210097 (doi:10.1098/rsbl.2021.0097)
3. Labrousse, S., Fraser, A. D., Sumner, M., Tamura, T., Pinaud, D., Wienecke, B., … Jenouvrier, S. (2019). Dynamic Fine‐Scale Sea Icescape Shapes Adult Emperor Penguin Foraging Habitat in East Antarctica. Geophysical Research Letters, 46(20), 11206–11218. (doi:10.1029/2019gl084347)
4. Jenouvrier S., Long M., Coste C.F.D, Holland M., Gamelon M., Yoccoz N.G., Sæther B-E. Detecting climate signals in populations across life histories. Submitted to Global Change Biology. (doi:10.1111/gcb.16041)