Ecosystems

• Biodiversity means the total variety amongst all living things on earth
• Ecosystems

  • Tropical rain forest
  • Savannah
  • Moorlands
• Population


  A group of organisms of one species living in an area
• Community

  All of the animals and plants that live in one area
• Ecosystem


  An ecosystem consists of all the organisms living in a particular area and the non-living components with which they interact
• Habitat


  The place where an organism lives
• Species


  A group of genetically similar organisms that can interbreed to produce fertile offspring
• All the energy needed by the living things in an ecosystem comes from the Sun
• Consumers


  Animals that must consume other animals in order to obtain energy
• Secondary Consumer


  The second consumer in a food chain. They obtain their energy by eating primary consumers
• Primary Consumers

  • Crabbit
  • Fex
  • etc.
• Herbivore

  An animal which only eats plant material
• Primary Consumer


  The first consumer in a food chain. They obtain their energy by eating green plants
• Consumers cannot produce their own food from sunlight
• Producers

  • Green plants
  • Phytoplankton
  • Algae
• Carnivore


  An animal which only eats animal meat
• Omnivore


  An animal which eats both plants and animal material
• Producers


  Green plants converting light energy from the sun into chemical energy by photosynthesis
• Tertiary Consumer


  The third consumer in a food chain. They obtain their energy by eating secondary consumers
• Types of Consumer

  • Primary Consumer
  • Secondary Consumer
  • Tertiary Consumer
• Secondary Consumers

  • Wolf
  • Etc.
• Food chains


  A relationship where one organism feeds on the previous one and in turn provides food for the next one in the series
• Predator


  An animal which hunts another animal for its food
• Food chain


  A series of organisms through which energy and nutrients pass as one organism eats another
• Primary consumer

  An organism that eats the producer
• Tertiary consumer


  An organism that eats the secondary consumer
• Prey


  The hunted animal
• Producer


  Green plant
• Secondary consumer


  An organism that eats the primary consumer
• Energy


  Energy flows through the food chain from the producer to the consumer
• Animals usually have more than a few predators
• Food chains rarely occur by themselves in nature
• Predator


  An animal that hunts other animals for food
• A food web is more complex than a single food chain
• Food web


  A complex relationship composed of several inter-related food chains
• A producer is normally eaten by more than one animal
• Producer


  An organism that produces its own food
• Green plants compete for

  • Light
  • Water
  • Nutrients
• Brown Trout


  • VS
• Competition occurs in an ecosystem when a particular resource is in short supply