'Evolutionary species concept' diaporamas de présentation

Chapter 24: The Origin of Species

Chapter 24: The Origin of Species. Question?. What is a species? Comment - Evolution theory must also explain how species originate. Question. How many species of African Violets are here?. Two Concepts of Species. 1. Morphospecies 2. Biological Species. Morphospecies.

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Classification

Classification. Organisms are classified into a hierarchical classification that groups closely related organisms and progressively includes more and more organisms. Species. The species is the basic biological unit around which classifications are based.

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The Origin of Species Chapter 22

The Origin of Species Chapter 22. The concept of species must account for two phenomena: The distinctiveness of species that occur together at a single locality The connection that exists among different populations belonging to the same species. The Nature of Species.

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Chapter 24: The Origin of Species

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Biodiversity

Biodiversity. Outline. Biodiversity and the Species Concept Varied Definitions Benefits of Biodiversity Threats to Biodiversity Natural and Human Caused Reductions Endangered Species Management ESA CITES Captive Breeding. BIODIVERSITY AND THE SPECIES CONCEPT. What is Biodiversity ?

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Taxonomy and Species concepts

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Evolution of Life Histories

Evolution of Life Histories . Life Histories. Concerned with 1. Size at reproductive maturity 2. Age at reproductive maturity 3. Number of offspring produced 4. Size of offspring produced Variation from two sources: 1. Epigenetic factors Phenotypic plasticity 2. Adaptations

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GETTING THE MEASURE OF BIODIVERSITY

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Speciation

Speciation. Process by which species originate Origin of diversity we observe in nature. Outline. Species concepts Species numbers through time What drives speciation? Two examples Discussion. Species Concepts. Typological Biological Evolutionary Genealogical Ecological Cohesive.

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Ch. 4 Taxonomy and Phylogeny of Animals

Ch. 4 Taxonomy and Phylogeny of Animals. Carolus Linnaeus (1707-1778). Taxonomy. Ernst Haeckel (1834-1919). Evolutionary Tree. Hierarchical System Classification. Taxa & Taxonomic Ranks. Kingdom. Phylum. Class. Order. Family. Genus. Binomial Nomenclature. species.

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