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E C O L O G Y

E C O L O G Y. What is meant by: Everything in nature is connected?. PLEASE read about the 1995 experiment in your handout. C O N C L U S I O N. In nature, things that we would never think were connected— mice, acorns, ticks, & humans- --can be linked to each other in a complex web.

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E C O L O G Y

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  1. E C O L O G Y What is meant by: Everything in nature is connected?

  2. PLEASE read about the 1995 experiment in your handout

  3. C O N C L U S I O N • In nature, things that we would never think were connected— mice, acorns, ticks, & humans---can be linked to each other in a complex web

  4. THE ORGANIZATION OF LIFE • ECOSYSTEM: all the organisms living in an area together with their physical environment. • Examples: oak forest, coral reef, vacant lot

  5. ECOSYSTEMS • MICONCEPTION: often ecosystems are viewed as isolated from each other BUT • Ecosystems DO NOT have clear boundaries • Things move from one ecosystem to another • Soil washes from mountain into lake • Birds migrate from Canada to Mexico • Pollen blows from a forest into a field

  6. REAL – LIFE CONNECTION • COMPLEX SYSTEMS • SAN DIEGO EXAMPLE---PLEASE READ • What are some other problems that the city faced?

  7. THE COMPONENTS OF AN ECOSYSTEM • For survival ecosystems need 5 basic components: 1. ENERGY (mostly from sun) 2. MINERAL NUTRIENTS 3. WATER 4. OXYGEN 5. LIVING ORGANISMS

  8. ARE YOU UNDERSTANDING ALL THINGS IN NATURE ARE CONNECTED? • ANOTHER EXAMPLE………… • THINK ABOUT HOW A CAR WORKS? • The engine is made of 100s of parts that all work together. Even if 1 part breaks, the car might not run. • If one part of an ecosystem is destroyed or changes, the entire system may be affected

  9. THE COMPONENTS OF AN ECOSYSTEM • Jot down all the things you need for survival OXYGEN, WATER, FOOD, SHELTER • What types of ecosystems might produce these necessities?

  10. THE COMPONENTS OF AN ECOSYSTEM An ecosystem is composed of both LIVING & NONLIVING things • BIOTIC FACTORS: the living & once living parts of an ecosystem. • Including: dead organisms, dead parts of organisms (leaves), & organism’s waste products • ABIOTIC FACTORS: the nonliving parts of an ecosystem. • Including: air, water, rocks, sand, light, & temp.

  11. LEVELS OF ECOLOGICAL ORGANIZATION WILDEBEEST

  12. LEVELS OF ECOLOGICAL ORGANIZATION

  13. LEVELS OF ECOLOGICAL ORGANIZATION

  14. LEVELS OF ECOLOGICAL ORGANIZATION AFRICAN SAVANNA

  15. LEVELS OF ECOLOGICAL ORGANIZATION

  16. LEVELS OF ECOLOGICAL ORGANIZATION ORGANISM ↓ POPULATION ↓ COMMUNITY ↓ ECOSYSTEM ↓ BIOSPHERE

  17. LEVELS OF ECOLOGICAL ORGANIZATION • ORGANISM: an individual living thing • Species: group of organisms that are closely related & that can produce fertile offspring. • Example: humans--- Homo sapiens • POPULATION: all the members of the same species that live & in the same place at the same time. • Example: field mice in a corn field • COMMUNITIES: a group of various species that live in the same place & interact with each other. • Example: Pond Community; includes all the populations of plants, fish, & insects that live in and around the pond. • All living things in an ecosystem belong to 1 or more • Difference btwn. communities is the types of species. (PLANTS-often determine what species live in community) • HABITAT: The place an organism lives • Example: howler monkey- rain forest cactus--- desert waterlily—pond • Every habitat has specific characterisics that the organisms that live there need to survive. • If any of these factors change, then the habitat changes

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