Ecology oikos house household logia study of The
- Slides: 8
Ecology oikos, “house, household” + logia “study of” The study of the interactions between organisms (biota) and their environments (including abiotic factors); the study of ecosystems Grew out of interests in natural history, U. S. land acquisition, exploration John Wesley Powell John Muir
Activism 20 th century: increasing environmental awareness: • Green (agricultural) revolution > use of pesticides (i. e. DDT) whooping crane, bald eagle populations threatened • 1966 Endangered Species Protection>Act
Activism • 1970 Environmental Protection Agency • 1972 Clean Water Act in response to the burning of the Cuyahoga (OH) river then…and now 00: 22 – 2: 19 • Clean Air Act follows
Activism These nation-wide reformations often result from individuals activism Example: Bill Kortum, a veterinarian who helped lead the battle to protect public access to the California coast, preserve open space in Sonoma county.
Hierarchy Levels of organization in ecology Biomes are global ecosystems All the biota Biology defines biosphere as the zone of life on Earth (ESS defines biosphere as only the life) One species
Species Members of a population all belong to the same species Successfully interbreed, producing viable, fertile offspring Lynx rufus Animalia Mammalia Carnivora x Lynx rufus The most specific taxonomic group
Habitat Where in the ecosystem the organism lives
Niche The specific set of requirements, and the role, of each organism ➔ 25 -30 mi 2 territory ➔ prey control ➔ single mate ➔ several dens
