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Ecosystem Dynamics: Energy Flow, Pollinators, and Biodiversity

Explore the dynamic universe of ecosystems, energy flow, and the crucial role of pollinators in biodiversity. Discover how energy is transferred through trophic levels and the importance of pollinators in sustaining natural ecosystems.

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Ecosystem Dynamics: Energy Flow, Pollinators, and Biodiversity

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  1. The universe is dynamic. When we are creative, we are the most alive and in touch with it. --Brad Dourif

  2. Biodiversity

  3. O What A Tangled Web… www.youtube-nocookie.com/embed/xHkq1edcbk4?rel=0 Video: Wings of Life

  4. Flow of Energy in Ecosystems Solar radiant energy captured = about 1%

  5. 17% growth

  6. 17% growth 33% cellular respiration

  7. Amount of chemical-bond energy decreases as energy is passed from one trophic level to the next • 50% of chemical-bond energy is not assimilated and is egested in feces • 33% of ingested energy is used for cellular respiration • 17% ingested energy is converted into insect biomass • Some is available to next consumer 17% growth 33% cellular respiration 50% feces

  8. Trophic levels: what you eat! Producers/Autotrophs Consumers/ Heterotrophs

  9. Ecosystems - Communities and their physical environments, which interact and are interconnected by physical, chemical and biological processes

  10. Energy Flow • Producers - Photosynthesize and store produced energy • Plants, algae • Primary consumers - Feed on producers • Cows, caribou, caterpillars • Secondary consumers - Feed on primary consumers • Tigers, toads • Decomposers - Break down organic material to forms that can be reassimilated by producers • Bacteria, fungi

  11. Ecosystems: • Producers and consumers interact, forming food chains or food webs. • Determine flow of energy through different levels

  12. Ecosystems: • Trophic efficiency - Percentage of available energy actually transferred from one trophic level to next

  13. Pollinators USFWS • Birds • Bats • Insects • Bees • Butterflies & Moths • Flies • Beetles • Wasps USFWS Dean E. Biggins, USFWS

  14. Unusual Pollinators Mammals: Opossum Rats Flying Fox Lemur Lizards!

  15. The Workhorse Pollinator Honeybees: Apis Threats: Colony Collapse Disorder Disease Invasive Species

  16. Importance of Pollinators • More than 80% of flowering plants depend on animal pollinators • In U.S., over 100 crop plants depend on animal pollinators (value >$15 Billion) • Most natural ecosystems would collapse without animal pollinators • Some plants are endangered because of diminished pollination • Chocolate depends on pollinators!!

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