1 / 13

Ecology

Ecology. Study of interactions between organisms and their environments. Biotic Factors. Biosphere – life-supporting layer of Earth Biotic factors – all living organisms in a biosphere. Abiotic Factors. Nonliving factors in an environment Examples: Air currents Temperature

kirk-moon
Download Presentation

Ecology

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ecology Study of interactions between organisms and their environments.

  2. Biotic Factors • Biosphere – life-supporting layer of Earth • Biotic factors – all living organisms in a biosphere

  3. Abiotic Factors • Nonliving factors in an environment • Examples: • Air currents • Temperature • Moisture • Light • Soil

  4. Organization of Life Biosphere Ecosystems Communities Populations Organisms

  5. Feeding Relationships • Autotrophs • Heterotrophs • Carnivores • Omnivores • Herbivores • Decomposers

  6. Trophic Relationships • Autotrophs • 1st level consumers (herbivores) • 2nd level consumers • 3rd level consumers • 4th level consumers (top predators)

  7. RULE OF 10 • Only 10% of energy is transferred from one trophic level to the next. • Example: • It takes 100 kgs of plant materials (producers) to support 10 kgs of herbivores • It takes 10 kgs of herbivores to support 1 kg of 1st level predator

  8. Symbiosis – “living together”

  9. Water cycle • Evaporation • Transpiration • Precipitation • Runoff • Groundwater

  10. Carbon cycle • Combustion • Photosynthesis • Respiration • Decomposition • Fossil fuels

  11. Nitrogen cycle • Atmospheric nitrogen • Runoff • Fertilizers • Decomposition • Nitrogen fixing • Synthesis of amino acids

More Related