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The Science of Ecology

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The Science of Ecology Introduction to Ecology What is ecology? -Greek Oikos = the home or household -ology = study of -The study of the distribution and abundance of ... – PowerPoint PPT presentation

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Title: The Science of Ecology


1
The Science of Ecology
2
Introduction to Ecology What is ecology? -Greek
Oikos the home or household -ology study
of -The study of the distribution and abundance
of organisms in relation to their
environment -Focus is on interactions
3
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4
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5
Hierarchical organisation of ecological
systems -Organism - a unique individual -Populati
on - group of potentially interbreeding
individuals (i.e., species) -Community - all
populations within an ecosystem (i.e., multiple
species) -Ecosystem - community physical
environment -Biosphere - ecosystems of the Earth
6
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7
Galaxies
ECOLOGY
Solar system
Scale
Earth
Ecosystem ecology
Ecosystems
PHYSIOLOGY
Community ecology
Communities
Populations
Population ecology
Organisms
Organs
Behavioral ecology
BIOCHEMISTRY
Tissues
CELL BIOLOGY
Cells
Molecules
Atoms
8
  • Four ecological subdisciplines
  • Behavioural Ecology
  • How does behaviour contribute to survivorship,
    reproduction and population growth?
  • Population Ecology
  • What controls the abundance of a species?
  • How do populations grow?
  • What are the controls on population growth rate?

9
  • Community Ecology
  • Interactions among organisms with and across
    environments
  • Biodiversity on earth
  • Preservation of species-rich areas
  • Linkages between species richness and community
    and ecosystem function
  • Ecosystem Ecology
  • Passage of energy and nutrients through
    communities
  • Effects of energy and nutrients on communities
  • Human alterations of global nutrient cycles

10
Ecology is an integrative/ interdisciplinary
science -Understanding of the biological
(biotic) and physical (abiotic)
sciences -Closely tied to genetics and
evolution -Includes the role of humans in their
environment ( global change)
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