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Understanding Ecology: Interactions and Factors

Explore the study of interactions between organisms and their environment, from biotic vs. abiotic factors to levels of biological organization and species niches. Learn how ecosystems thrive through intricate relationships.

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Understanding Ecology: Interactions and Factors

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  1. Introduction to Ecology

  2. What is Ecology? • Biotic vs. Abiotic Factors • Ecology is the study of interactions between organisms and their environment. • Biosphere– portion of the Earth supporting life • Biotic factors • a. All organisms inhabiting the environment • b. Each organism adapts to its part of the biosphere • Abiotic factors • a. Nonliving parts of the environment • b. Can determine which species will survive • examples: rainfall, temperature, light, soil

  3. Abiotic Factors Biotic Factors ECOSYSTEM

  4. C. Levels of Biological Organization • Populations a. A group of organisms of the same species living together b. Must compete for resources • Community a. Several populations that interact b. Changes in one population will cause changes in the others • Ecosystem a. Interactions between populations and theirsurroundings b. 2 main types: 1. Terrestrial – land 2. Aquatic – fresh or salt water

  5. Levels of Biological Organization

  6. D. Niche vs. Habitat • Niche • The role an organism plays in the environment (Its “job” in the community) • Habitat • Place where an organism lives Three Species of Warblers and their niches Cape May Warbler Feeds at the tips of branches near the top of the tree Bay-Breasted Warbler Feeds in the middle part of the tree Yellow-Rumped Warbler Feeds in the lower part of the tree and at the bases of the middle branches Spruce tree

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