ISOECOL 2026 will feature over 130 presentations spanning a diverse range of themes on paleontology, trophic ecology, migration ecology, and beyond. The conference will be run in a single session format, giving participants the unique opportunity to attend all talks across the four days of the scientific programme. The Book of Abstracts contains abstracts for all keynote speakers, oral presentations, lightning talks, and poster presentations. All entries in the table of contents are hyperlinked for convenient navigation.