Abstract Supplement of the ECUADENDRO 2026: Second International Dendrochronology Conference

The 2nd International Dendrochronology Conference (ECUADENDRO 2026) brought together the global dendrochronological community to advance scientific dialogue on tree-ring research, climate variability, forest systems, and environmental governance. Building upon the strong scientific foundation established in 2025, ECUADENDRO 2026 expanded its international reach, convening 188 registered participants from 56 countries across North America, Central America, South America, Europe, Asia, Africa, Oceania, and Australia. The conference program comprised 10 thematic sessions and 21 scientific presentations, covering a broad spectrum of dendrochronological research, including dendroclimatology, wood anatomy, forest ecology, environmental history, and applied tree-ring science. Contributions reflected diverse forest ecosystems and methodological approaches from temperate, boreal, Mediterranean, and tropical regions worldwide, highlighting both regional specificity and global relevance. A key milestone of ECUADENDRO 2026 was the inauguration of the DendroRegulation session, a new thematic focus designed to bridge dendrochronological evidence with environmental governance, forest stewardship, and policy-relevant frameworks. This session emphasized the growing role of tree-ring science in supporting sustainable decision-making and strengthening the interface between scientific research and environmental regulation. Scientific quality and rigor were ensured through the guidance of an international Scientific Review Committee, composed of recognized experts from leading institutions across multiple continents. The conference fostered a collaborative environment that encouraged interdisciplinary exchange, critical discussion, and the integration of tree-ring science into broader sustainability and governance contexts. ECUADENDRO 2026 reaffirmed the importance of international collaboration in dendrochronology and demonstrated the capacity of the field not only to reconstruct past environmental variability, but also to inform future-oriented strategies for forest resilience and environmental governance.