Download Ecosystems

Ecosystems
Definitions
Definitions
• Abiotic: Non-living physical or chemical factors in the environment;
for example: air, sun, water and soil (minerals)
• Biotic: Living components in the environment such as humans, plants,
birds, microorganisms, and insects
Definitions
• Ecosystem: all the interacting biotic and abiotic parts of an area; an
ecosystem can be large or small, but must contain all of the abiotic
and biotic features.
•Organism: an individual animal, plant, or
single-celled life form.
•Individual : A single organism
•Population: a collection of organisms of the
same species found in a specific geographic
area
• https://www.youtube.com/watch?v=QI2ixJeIxEU
•Habitat: the natural environment
where an organism lives
•Community, also called biological
community: an interacting group of
various species in a common
location.
Food Web
• The trophic level of an organism is the position it occupies in a food
chain or Food Web (Trophic level info is bonus info for you)
• Three Main Categories: (Gotta know this stuff)
•Producer
•Consumer
•Decomposer
Write this down…
• Producer: organism that makes its own food using abiotic
components such as water, air, nutrients, and sunlight
• Consumer: organism that cannot make its own food; eats
other organisms
• Decomposer: organism that feeds on dead plants or animals;
breaks complex molecules into simpler nutrients.
(Scavengers too)
^ Consumers
^ Decomposers ^
Food pyramid
Producers
Trophic Level 1
• Organisms that make
their own food using
abiotic components such
as water, air, nutrients,
and sunlight
• Green plants and Algae
• Photosynthesis
Primary Consumer
Trophic level 2
• These organisms can not
make their own food
energy.
• Primary consumers are
Herbivores, they eat
plants and Fungi for food
energy.
Did you Know? Kilo Joule
• Kilojoule[edit]
• The kilojoule (kJ) is equal to one thousand (103) joules. Nutritional
food labels in some countries express energy in kilojoules (kJ).
• One square metre of the Earth receives about 1.4 kilojoules of solar
radiation every second in full daylight
• kJ are similar to Calories: 1 kJ = 0.2 Calories (Cals) 1 Calorie = 4.2 kJs.
Secondary Consumer
Trophic level 3
• These organisms are
predators that are
either:
• Carnivores – Eat
smaller Herbivores
• Omnivores – Eat
plants and animals
Tertiary Consumer
Trophic level 4
• These predators eat
other predators
• Carnivores.
Apex Predator
• A predator at the top of the food chain in their ecosystem
• They are not hunted by other predators (other than themselves)