BIO 2137 Lecture Notes - Lecture 2: Numerical Taxonomy, Habitat Destruction, Phylogenetic Tree
17 Jul 2014
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Linnaeus, genus, hierarchy: higher level classification, traditional classification: kingdoms, taxa, 6 kingdom, recent classification, taxonomic studies and characters, phylogeny: phylogenetic trees, cladistics: cladograms, new techniques: numerical taxonomy, molecular taxonomy, aflp, tree of life age. Flowering plants: largest group due to co-evolution with insect pollinators and herbivores, most species and >200 easily recognizable families, largest families >10000 species are: orchids, daisy, legumes. Ex. slide 6 - pleodendron costaricense: new tree, from which new compounds were discovered. Systematics: the science of biodiversity definition: scientific study of biodiversity relationships: taxonomy: identification, naming, and classification of species (old, phylogeny: evolutionary history of species (modern) Why bother with classification: scientific work: knowledge/info/expertise needed for reproducible scientific work, publication: requires identification of species by expert taxonomist and voucher (deposit of a reference specimen) in a herbarium (official collection) Classification: linnaeus (father of classification) popularized binomial classification, genus, species taxonomist (family) Slide 12: mahogany tree - swietenia macrophylla king (meliaceae)
