'Extinctions' diaporamas de présentation

Anthropogenic Mass Extinction

1.25k views • 54 slides

Palaeobiology: how extreme environments drive evolutionary change in large organisms

Palaeobiology: how extreme environments drive evolutionary change in large organisms. Robin Allaby r.g.allaby@warwick.ac.uk. Lecture content. DEEP TIME the palaeontological record mass extinctions speciation explosions possible mechanims for speciations SHALLOW TIME

407 views • 35 slides

Extinctions: past and present

536 views • 32 slides

Lyme Disease

Lyme Disease. Borrelia burgdorferi. Species Area Curves. S = CA Z. (log S) = Z (log A) + (log C). From: Gotelli, N. J. 1995. A primer of ecology. Sunderland, MA: Sinauer Assoc. 1-206 p. Species Loss Due to Deforestation. Based on empirical results, z typically between 0.15 and 0.35. before.

227 views • 22 slides

Speciation and Extinction

Speciation and Extinction. Biogeography October 29 - Nov 2. Defining a species Morphological definition Biological definition Subspecies Mechanisms of Speciation Genetic drift Natural selection Gene flow Types of Speciation Allopatric speciation Sympatric speciation. Other Issues

1.71k views • 18 slides