Ecological modeling study demonstrates density surface models estimate seasonal humpback whale abundance in the Gulf of Maine, highlighting consistency with traditional survey methods.
This document provides an overview of the field data collection and analytical techniques used for line transect abundance data collected by the AMAPPS shipboard and aerial surveys from 2010 to 2023. It focuses on the application of DSMs using Generalized Additive Models (GAMs) to calculate seasonal abundance estimates and investigate trends. The Gulf of Maine humpback whale serves as a case study. This document also briefly compares these GAM DSM annual Gulf of Maine humpback abundance estimates with those derived from traditional line transect design-based methods and from capture-recapture models based on photo-identification.
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Chávez-Rosales et al. (2026) studied this question.
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