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Unit 3.1: Ecology Intro & Biomes

Unit 3.1: Ecology Intro & Biomes. Chapters 3 & 4. Ecology. Ecology : study of interactions between organisms & their environment In the broadest sense, Ecology focuses on the Biosphere. Everything is connected to everything else. Ecology.

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Unit 3.1: Ecology Intro & Biomes

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  1. Unit 3.1: Ecology Intro & Biomes Chapters 3 & 4

  2. Ecology • Ecology: study of interactions between organisms & their environment • In the broadest sense, Ecology focuses on the Biosphere Everything is connectedto everything else

  3. Ecology • Biosphere: all the portions of the Earth where life exists (including land, water, and air/atmosphere)

  4. Levels of organization in an Biosphere: • We learned this already… • Atoms are bonded together to form: • Molecules form: • Organelles work together in a: • Cells of the same type form a: • Tissues work together to form: • Organs are arranged in: • Organ systems make up a: Molecule Organelle Cell Tissue Organ Organ system Organism

  5. Levels of organization in an Biosphere: • But there’s more… • Groups of organisms of the same species that live together: • Populations of different species living in the same place: • All biotic (living) and abiotic (non-living) factors in particular area: • Abiotic ex: weather, rocks, soil, etc. Population Community Ecosystem

  6. Ecology • Breaking it down… • Organism: an individual living thing • Species: organisms that breed and produce fertileoffspring

  7. Ecology • Breaking it down… • Habitat: where an organism lives • Ex: Zebra lives in the African Savanna • Niche: an organism’s role in the environment • Ex:Zebras eat grass.

  8. Ecology • Population: group of the same species living in the same area • Ex: elephants in the Savanna Populations

  9. Ecology • Community: populations of different species living in the same area (all living – biotic factors) • Ex: elephants, lions, zebras in the savanna Community Feeding relationships

  10. Ecology • Ecosystem: All the biotic (living) and abiotic (non-living) parts of an environment • Ex: soil, water, temp, lions, zebras in the Savanna Ecosystem Feeding relationships

  11. Ecology • Biome:group of ecosystems that have the same climate and dominant vegetation

  12. Rainforest high biodiversity lots of rain, lots of sunlight, always warm many plants & animals

  13. Savanna mid biodiversity dry season/wet season, always warm frequent fires in dry season many herbivores

  14. Desert low biodiversity very dry, hot in day & cold at night very few plants & only small animals:reptiles, insects, rodents, birds

  15. Temperate Grassland (Midwest U.S.) mid biodiversity dry season/wet season, cold winters/hot summers frequent fires in dry season many herbivores

  16. Temperate Deciduous Forest high biodiversity 4 seasons: warm summer with rains, cold winter with snow deciduous trees, many mammals, insects, birds, etc.

  17. Coniferous Forest (Taiga) mid biodiversity northern forest, drier, cooler evergreens, mammals, birds, insects, etc.

  18. Tundra low biodiversity cold year round, dry, permafrost only lichens & mosses & mostly migrating animals

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