1. ECOLOGY
eCO

2. WHAT IS ECOLOGY? LATIN “ECOS” WHICH MEANS HOME.
In this case the Earth is our home.
Ecology is the study of organisms and the environment: the study of the relationships between living organisms and their interactions with their natural or developed environment

3. ECOLOGICAL HEIRARCHY BIOSPHERE
The part of the Earth’s crust, waters and atmosphere that is capable of
supporting life
BIOME
Large regional area with same climate and vegetation
throughout
ECOSYSTEM
All communities together with the abiotic
Factors affecting them
COMMUNITY
Groups of populations within
the same area
POPULATION
Several of the same
species
ORGANISM
A single member of
a species

4. BIOSPHERE
If the earth were an apple the depth of the biosphere would equal the depth of the skin on the apple!

5. What determines where life can exist within the biosphere?
ABIOTIC LIMITING FACTORS
TEMPERATURE: warmest at equator colder at poles, cooler away
from surface
SUNLIGHT: greatest at equator less toward poles, less as go deeper
WATER: more water more life, Fresh? Salt?
SOIL: type, sandy less- humus (rich top soil) more
NUTRIENTS: cycling of organic molecules, more life more nutrients
pH: extremes in acidity or alkalinity decreases life
PRESSURE: up decreases-down increases(atmosphere and hydro)
OXYGEN: up decreases-down increases(opposite in hydrosphere)

6. As you go up… Temperature decreases Oxygen levels decrease Pressure decreases
Deeper you go…
No sunlight
Nutrient level decreases
Temperature varies
Pressure increases
Water availability
As you go down…
Sunlight decreases
Pressure increases
Temperature decreases
pH/salinity vary

7. ECOSYSTEM RECYCLING CARBON HYDROGEN OXYGEN NITROGEN PHOSPHOROUS
MATTER RECYCLES CONTINUOUSLY THROUGH THE ENVIRONMENT AND ORGANISMS: TO BUILD ORGANIC MOLECULES AND MAINTAIN HOMEOSTASIS
CARBON
HYDROGEN
OXYGEN
NITROGEN
PHOSPHOROUS

8. WATER CYCLE WHY IS WATER NECESSARY?
Transport materials in cells; Moderate temperatures;
Dissolve molecules, photosynthesis/respiration(H’s),
CONDENSATION

9. ALL ORGANIC MACROMOLECULES
CARBON CYCLE
WHY IS CARBON NECESSARY?
ALL ORGANIC MACROMOLECULES 1 7 3 5 6 4 3 5 3 9 5 4 8 4 2
Fossil Fuels

10. PHOSPHORUS CYCLE No atmospheric component to the phosphorus cycle 1 3
WHY IS PHOSPHORUS NECESSARY?
Important structural unit of LIPIDS(cell
membrane); DNA(connects nucleotides)
ATP!
No atmospheric component to
the phosphorus cycle 1
PO4 1 3 2 7
Fertilizers
Material that is
decomposing 10 8
Bacteria
Fungi
Worms

11. NITROGEN CYCLE 6 4 5 1 3 1 6 1 2 WHY IS NITROGEN NECESSARY?
Build monomers of PROTEINS and NUCLEIC
ACIDS DNA/RNA
FLIP FLOPS 6
Fertilizers 4 5
FLIP FLOPS 1 3 1 6 1 2

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