Скачать с ютуб Ecology, evolution, and systematics of the Ocotea complex (Lauraceae) - Juan Penagos - Torrey Talks в хорошем качестве

Ecology, evolution, and systematics of the Ocotea complex (Lauraceae) - Juan Penagos - Torrey Talks

The Lauraceae are a pantropical family with a wide distribution in tropical regions, and a few genera extending to temperate zones. The Ocotea complex, the most diverse lineage of Lauraceae in the Neotropics, contains around 950 species (≥80% of the neotropical species) in 17 genera. Genera on this complex are usually difficult to delimit, creating a taxonomic nightmare. During the past decades, systematists have focused on understanding the relationship among genera using molecular phylogenetics, with limited success. However, recent advances in phylogenomic techniques have allowed us to resolve some of these relationships, giving the opportunity to confront the current taxonomy of the Ocotea complex, test traditional evolutive hypotheses about taxonomic characters and breeding systems, and explore ecological questions. In this talk, Juan presents the use of phylogenetic definitions (PhyloCode) to overcome limitations with the current taxonomy, and the ancestral reconstruction of four taxonomic characters used to delimit genera in the Ocotea complex. He also discusses advances in understanding fruit shape, leaf anatomy, and pathogen interactions in an evolutionary and ecological framework. ~~~~ presented by Dr. Juan Carlos Penagos Zuluaga, postdoctoral researcher (Yale University/NYBG) Torrey Botanical Society Spring 2022 Lecture Series ~~~~ 00:00 Introduction 01:13 Lecture 49:00 Q&A ~~~~ For more information on future lectures, field trips, and the Torrey Botanical Society, visit https://www.torreybotanical.org