Journal article
Estimating migration patterns of fish from otolith chemical composition time-series
Section for Marine Living Resources, National Institute of Aquatic Resources, Technical University of Denmark1
National Institute of Aquatic Resources, Technical University of Denmark2
Section for Oceans and Arctic, National Institute of Aquatic Resources, Technical University of Denmark3
Geological Survey of Denmark and Greenland4
Understanding migration patterns and habitat use is of great importance for management and conservation of marine living resources. The chemical composition of otoliths is influenced by the surrounding environment; therefore, they are indispensable data archives. To extract migration patterns and historical habitat use of individual fish, we analyse otolith chemical compositions obtained by laser ablation inductively coupled plasma mass spectrometry by a regime-switching state-space model.
The state-space model filters the measurement noise from the environmental signal. In turn, the filtered signal is converted to geographical positions through a calibration of strontium to salinity. The method is validated by a simulation study and applied to 404 Atlantic cod (Gadus morhua) otoliths.
Language: | English |
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Publisher: | NRC Research Press |
Year: | 2021 |
Pages: | 1512-1523 |
ISSN: | 12057533 and 0706652x |
Types: | Journal article |
DOI: | 10.1139/cjfas-2020-0356 |
ORCIDs: | Albertsen, Christoffer Moesgaard , Hüssy, Karin and Hansen, Jakob Hemmer |