Introducing. Eco. logy. Ecology. the study of the relationships between biotic and abiotic factors in environments. eco (G) root home, abode. log, -o, y (G) suffix study of. eco climate. eco system. eco tourism. epidemi ology. climat ology. zo ology. Ecosystem.
the study of the relationships between biotic and abiotic factors in environments
eco (G) root home, abode
log, -o, y (G) suffix study of
includes all abiotic and biotic factors in one particular environment
the living parts of an ecosystem
the nonliving parts of an ecosystem
include plants, animals, fungi, microorganisms
bio(s), bio(t) (G) root life
Examples of Biotic Factors
include air, water, soil, temperature, wind, source of energy (usually sun)
a, an(G) prefix not, without
Examples of Abiotic Factors
Examples of Ecosystems
Coral Reef in Belize
Mountains in Colorado
do not necessarily have clear boundaries due to biotic and abiotic changes
can change daily as things move from one ecosystem to another
migration, seed dispersal
flood, erosion, drought
interact with each other in complex ways
parasitism mutualism competition
also interact with abiotic factors in the ecosystem
dependent upon water, minerals, temperature, light
a major regional or global biotic community, a super ecosystem, defined chiefly by the dominant forms of plant life and the prevailing climate
Major Biomes of the World
tropical rain forest
Levels of Organization
smallest unit of living things
large region with typical plants and animals that includes several ecosystems
group of different kinds of tissues working together
group of organs working together
all living and nonliving things interacting within a certain area
all organisms of the same kind living in one area
all interacting populations in an ecosystem
one individual living thing
group of similar cells organized to work together
All the organisms of a species that live in the same place at the same time make up a population.
Food Chains/ Webs
The ability to do work or cause
What is energy?
You lose 90% of your
energy when you go
to the next level.
eat what’s leftover.
100 units of energy
1,000 units of energy
10,000 units of energy
Only 10% of energy is transferred from one trophic level to the next.
It takes 100 kgs of plant materials (producers) to support 10 kgs of herbivores
It takes 10 kgs of herbivores to support 1 kg of 1st level predator
The flow of energy of one organism eating another organism
Turn your energy pyramid into a food chain:
Producer Consumer 2nd level Decomposer
S:\FACULTY\6th Science\Energy flow through an ecosystem.asf
The pattern of overlapping food chains in an ecosystem
FOOD WEBS SHOW HOW MANY
ANIMALS ARE INTERCONNECTED BY
FOOD WEBS show how plants
and animals are
connected in many ways to help them all survive.
follow just one path as animals find food.
S:\FACULTY\6th Science\Food web.asf
Food chains and food webs.asf
Arms. (1996). Environmental Science. Orlando,Florida: Holt, Rinehart and Winston, Inc.
McLaren, James E, and Rotundo, Lisa (1985). Heath Biology. D. C. Heath and Company.
The American Heritage Dictionary of the English Language, Third Edition. (1992). Houghton Mifflin Company.