small scale ecosystem Brook hollows in rolleston

• Brook Hollows


  A small scale ecosystem made up of food chains and food webs
• Producers in the Brook Hollows ecosystem

  • Algae and microscopic plants
  • Detritus (decaying leaves)
• Consumers in the Brook Hollows ecosystem

  • Worms
  • Mayfly
  • Blackfly
  • Midge larva
  • Great diving beetle
  • Caddis
  • Stonefly
  • Dragonfly
  • Fish
  • Heron
  • Kingfisher
• A freshwater pond food chain

  1. Producer

  2. Fish

  3. Heron
• Freshwater pond food web

  1. Algae and microscopic plants

  2. Worms

  3. Mayfly

  4. Blackfly

  5. Midge larva

  6. Great diving beetle

  7. Caddis

  8. Stonefly

  9. Dragonfly

  10. Fish

  11. Heron

  12. Kingfisher
• Decrease in Mayfly


  • Caddis, stoneflies and dragonflies may also decrease
  • Fish may decrease
• Farmer nearby puts more fertiliser on his land

  • More algae and microscopic plants grow
  • More mayfly and midge lava
  • Great diving beetle, caddis, stonefly, and dragonfly would increase
  • More algae may grow as mayfly won't be eating it
  • Midge larva could have an increase food source
  • Fish numbers may increase
  • Top predators such as herons may also increase