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  • Timeline of the evolution of life on Earth - New Scientist
    The story of evolution spans over 3 billion years and shows how microscopic single-celled organisms transformed Earth and gave rise to complex organisms like animals
  • topic 2. 1: Species and populations - AMAZING WORLD OF SCIENCE . . .
    A population is a group of organisms of the same species living in the same area at the same time and capable of interbreeding These species share a requirement for a limited resource which reduces fitness of one or both species Population density is the average numb er of individuals in a stated area Factors affecting population size are
  • National Center for Biotechnology Information
    We would like to show you a description here but the site won’t allow us
  • The Role of Habitat Conservation and Recovery Planning
    Habitat is the physical and biological setting in which organisms live and in which the other components of the environment are encountered (Krebs, 1985; Jones, 1987) The concept of habitat is critical to modern ecology and was adopted and promulgated in some of the earliest treatises and texts (Elton, 1927; Clements and Shelford, 1939); habitat is a basic requirement of all living organisms
  • Numbers of Living Species in Australia and the World - Foreword
    But there’s also good news Every day we are making exciting new discoveries about the breadth and depth of Australia’s biodiversity Since the first edition of the Numbers of Living Species in Australia and the World was produced in 2006, we’ve discovered 48 reptiles, about 200 new fish species and 1 184 flowering plants
  • What is biodiversity? - The Australian Museum
    Biodiversity is the variety of all living things; the different plants, animals, fungi and microorganisms, the genetic information they contain and the ecosystems they form Levels of biodiversity Biodiversity is usually explored at three levels: genetic diversity, species diversity and ecosystem diversity
  • 6: Species Diversity - Biology LibreTexts
    \(ρ_i\) is the proportion of the total number of specimens ii expressed as a proportion of the total number of species for all species in the ecosystem The product of \(ρ_iln(ρ_i)\) for each species in the ecosystem is summed, and multiplied by \(−1\) to give \(H\) The species evenness index (\(E\)) is calculated as \(E=\frac{H}{H_{max}}\)


















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