Integrating dedicated and opportunistic surveys to estimate seasonal common dolphin density off mainland Portugal
Moritz Klaassen, Håvard Rue, Marc Fernández, Andrew Houldcroft, M. Fernanda Martins, Ana M. Correia, Iolanda M. Silva, Nuno Oliveira, Andreia Pereira, Ana Marçalo, Sara Martino, Tiago André Marques, Filipe Alves
This paper develops a spatiotemporal model to integrate dedicated and opportunistic surveys for estimating seasonal common dolphin density off Portugal, providing animal-level density estimates with uncertainty.
bioRxiv · Sep 24, 2026 · PreprintEcology