Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1086/712798
Licence creative commons licence
Title (Primary) Movement and seasonal energetics mediate vulnerability to disturbance in marine mammal populations
Author Gallagher, C.A.; Grimm, V.; Kyhn, L.A.; Kinze, C.C.; Nabe-Nielsen, J.
Source Titel American Naturalist
Year 2021
Department OESA
Volume 197
Issue 3
Page From 296
Page To 311
Language englisch
Topic T5 Future Landscapes
Data and Software links
Keywords agent-based model; energy budget; harbor porpoise; marine mammals; anthropogenic disturbances; bioenergetics
Abstract In marine environments noise from human activities is increasing dramatically, causing animals to alter their behavior and forage less efficiently. These alterations incur energetic costs that can result in reproductive failure, death, and may ultimately influence population viability; yet the link between population dynamics and individual energetics is poorly understood. We present an energy budget model for simulating effects of acoustic disturbance on populations. It accounts for environmental variability and individual state, while incorporating realistic animal movements. Using harbor porpoises (Phocoena phocoena) as a case study, we evaluated population consequences of disturbance from seismic surveys and investigated underlying drivers of vulnerability. The framework reproduced empirical estimates of population structure and seasonal variations in energetics. The largest effects predicted for seismic surveys were in late summer and fall, and were unrelated to local abundance, but instead to lactation costs, water temperature, and body fat. Our results demonstrate that consideration of temporal variation in individual energetics and their link to costs associated with disturbances is imperative when predicting disturbance impacts. These mechanisms are general to animal species, and the framework presented here can be used for gaining new insights into the spatiotemporal variability of animal movements and energetics that control population dynamics.
Persistent UFZ Identifier
Gallagher, C.A., Grimm, V., Kyhn, L.A., Kinze, C.C., Nabe-Nielsen, J. (2021):
Movement and seasonal energetics mediate vulnerability to disturbance in marine mammal populations
Am. Nat. 197 (3), 296 - 311 10.1086/712798