Presentation on theme: "ECOLOGY A FEW TERMS. BIOTIC FACTORS The things that are living, or that came from living things EXAMPLES: Plants Animals Bacteria Fungus (mushrooms, yeasts)"— Presentation transcript:
NICHE : The factors that affect an organism For example: The NICHE of a garter snake is what it eats: ___________________ And what eats it: ___________________
PREDATOR: Something that attacks another organism, usually an animal, to eat it PREY: Something is attacked by another organism, usually an animal, and gets eaten.
PRODUCER: Something takes the energy from the sun, uses carbon dioxide and water, to make SUGARS Another name for producers is AUTOTROPH: Green plants are the producers.
CONSUMERS: Something that eats something else to survive. They are also called HETEROTROPHS All animals are consumers! Fungus are consumers! Many bacteria are consumers! Some protists are producers, some are consumers!
FOOD CHAIN: A representation of the transfer of energy starting at the sun, going into producers, then to the different levels of consumers
The energy is transferred from the sun to the plants then to the consumers. Note that at each transfer, ONLY 10% of the energy is actually transferred. This means that 90% of the energy is ‘lost’ – it is transformed into work, and a lot of it is transformed into heat lost by the living organism.
Primary consumers: Eat plants - Also called HERBIVORE Secondary consumers: Eat animals – Also called CARNIVORE Tertiary consumers: Eat carnivores - Sometimes called TOP CARNIVORE
Levels in the food chain: Decomposers – Fungi and bacteria break down dead plants and animals. Note that the products of the decomposers are returned to the producers
FOOD WEBS: All the food chains of an ecosystem combined together
https://www.youtube.com/watch?v=SWvtRf4TAO4 Food Chains, Food Webs,Energy Pyramid in Ecosystems-Video 5 min 10 sec