© 2004 Plano ISD, Plano, TX Ch. 18-1

© 2004 Plano ISD, Plano, TX the study of the relationships between biotic and abiotic factors in environments eco (G) root home, abode ecoclimate ecosystem ecotourism log, -o, y (G) suffix study of zoology epidemiology climatology Ecology Eco logy

© 2004 Plano ISD, Plano, TX Ecosystem includes all abiotic and biotic factors in one particular environment Biotic Factors the living parts of an ecosystem Abiotic Factors the nonliving parts of an ecosystem

© 2004 Plano ISD, Plano, TX Biotic Factors Bio bio(s), bio(t) (G) root life include plants, animals, fungi, microorganisms, and other things that were once alive (piece of wood, paper, dead animal) biology biostatistics biography biotechnology biosphere biomechanics biotic biofeedback

© 2004 Plano ISD, Plano, TX Examples of Biotic Factors

© 2004 Plano ISD, Plano, TX Abiotic Factors include air, water, soil, temperature, wind, source of energy (usually sun) A A a, an(G) prefix not, without atoxic amoral abiotic amusia Video

© 2004 Plano ISD, Plano, TX Examples of Abiotic Factors

© 2004 Plano ISD, Plano, TX Examples of Ecosystems Arizona Desert Mountains in Colorado Coral Reef in Belize

© 2004 Plano ISD, Plano, TX do not necessarily have clear boundaries due to biotic and abiotic changes Ecosystems BioticBioticAbioticAbiotic migration, seed dispersal flood, erosion, drought can change daily as things move from one ecosystem to another

© 2004 Plano ISD, Plano, TX interact with each other in complex ways Biotic Factors also interact with abiotic factors in the ecosystem Bees pollinating flowersBees pollinating flowers Ticks living on dogTicks living on dog Birds hitching a ride on a Buffalo’s backBirds hitching a ride on a Buffalo’s back Bees pollinating flowersBees pollinating flowers Ticks living on dogTicks living on dog Birds hitching a ride on a Buffalo’s backBirds hitching a ride on a Buffalo’s back dependent upon water, minerals, temperature, light such as

© 2004 Plano ISD, Plano, TX These nonliving parts of the environment affect all living things:These nonliving parts of the environment affect all living things: –The Sun –Climate –Temperature –Water –Atmosphere –Soil Abiotic factors of the Ecosystem Video

© 2004 Plano ISD, Plano, TX 12 Abiotic or Biotic? Biotic

© 2004 Plano ISD, Plano, TX 13 Abiotic or Biotic? Abiotic

© 2004 Plano ISD, Plano, TX 14 Abiotic or Biotic? Biotic

© 2004 Plano ISD, Plano, TX 15 Abiotic or Biotic? Abiotic

© 2004 Plano ISD, Plano, TX 16 1 st Level of Organization Organism: An individual living thing that is made of cells, uses energy, reproduces, responds, grows, and developsOrganism: An individual living thing that is made of cells, uses energy, reproduces, responds, grows, and develops

© 2004 Plano ISD, Plano, TX 17 2 nd Level of Organization Population: A group of organisms, all of the same species, which interbreed and live in the same place at the same time.Population: A group of organisms, all of the same species, which interbreed and live in the same place at the same time.

© 2004 Plano ISD, Plano, TX 18 3 rd Level of Organization Biological Community: All the populations of different species that live in the same place at the same time.Biological Community: All the populations of different species that live in the same place at the same time.

© 2004 Plano ISD, Plano, TX 19 4 th Level of Organization Ecosystem: Populations of plants and animals that interact with each other in a given area with the abiotic components of that area. (terrestrial or aquatic)Ecosystem: Populations of plants and animals that interact with each other in a given area with the abiotic components of that area. (terrestrial or aquatic)

© 2004 Plano ISD, Plano, TX 20 5 th Level of Organization Biosphere/ Biomes: The portion of Earth that supports life.Biosphere/ Biomes: The portion of Earth that supports life.

© 2004 Plano ISD, Plano, TX 21 The Biosphere /Biomes Life is found in air, on land, and in fresh and salt water.Life is found in air, on land, and in fresh and salt water. The BIOSPHERE is the portion of Earth that supports living things.The BIOSPHERE is the portion of Earth that supports living things. Examples of Biomes: Everglades, Desert, Tundra, Tropical RainforestExamples of Biomes: Everglades, Desert, Tundra, Tropical Rainforest