Ecology SB4

Abiotic Non-Living

Biotic – (Bio=life)

Autotroph or Heterotroph??? Biotic Autotroph Heterotroph -Make their own Food (how?) - Also called Producers -Consume/eat Food - Also called Consumers

Habitat = Home Where an organism lives out its life It may change or even disappear from an area Several species may share the same habitat at the same time

Niche = Job The role and position a species has in its environment What the organism eats, how it survives & reproduces .

Each occupies a different Niche

Trophic Levels Troph = Feeding

Can be called: -Food Chain -Energy Pyramid -Biomass Pyramid

Producers = Most Energy Bottom of the Food Chain

Consumers Primary, Secondary, Tertiary

Three Types of Consumers Herbivores Carnivores Omnivores

Decomposers –FBI…

Food Chain A food chain is a simplified way to look at the energy that passes from producers to consumers.

Food Web:

Food Chain vs. Food Web

Indicate the Direction of Food Chain & Food Webs Use Arrows Correctly! Indicate the Direction of Energy Flow in An Ecosystem

Energy Decreases – 10% Rule 10 % transfers to the next trophic level 90% is lost as HEAT (ex include: metabolism, indigestible or unusable materials)

Types of Ecological Pyramids Food – food chain Biomass – amt. biomass at each trophic level Energy – energy transfer Numbers – amt. of organisms at each trophic level

BrainPop Video