Transcript BIODIVERSITY The variety of different species in an ecosystem. All

BIODIVERSITY
ECOLOGY: The study of interactions among
living and nonliving things
• ABIOTIC FACTORS
–Non-living factors
– Soil, temp., precipitation
• BIOTIC FACTORS
–Living factors
–Ex) plants & animals
ORGANISM / SPECIES / INDIVIDUAL
A group of organisms so similar that they breed
and produce fertile offspring
POPULATION
All members of a particular species that
live in the same area
COMMUNITY
All the populations that live and interact
in the same environment.
ECOSYSTEM
All the communities that live together with the
abiotic factors in the same environment.
BIOSPHERE
The combined parts of the lithosphere, hydrosphere
& atmosphere where life exists.
INQUIRY ACTIVITY!
• Draw this diagram.
• Where do the following
terms go in the diagram?
–
–
–
–
–
Ecosystem
Biosphere
Community
Individual
Population
• Explain to a neighbor & write
your answers.
BIODIVERSITY
The variety of different species in an
ecosystem. All of the variety of organisms in
the biosphere.
BIODIVERSITY IS DEPENDANT ON…
1. Genetic Variation within Populations:
The difference that exist in a species’ genetic
makeup which makes one individual different
from one another individual.
Genetic variation within three
butterfly species. Three
different butterfly species (top
row) show distinct wing colors
and patterns. When individuals
from the same three species
are born in a different season,
they each show different wing
color and pattern phenotypes
(bottom row). This is a
reflection of the variation that
exists in the gene pool.
2. Variations of populations with ecosystems
Importance of Biodiversity include:
1. Resource use:
Species can provide us with foods, industrial
products and medicines
2. Healthy/Stable Ecosystems:
Organisms are important to the flow of energy
and matter through the food web.
SNOWBALL ACTIVITY
ON A HALF SHEET OF PAPER,
WRITE DOWN YOUR TOP 2
IDEAS FOR THE LOSS OF
BIODIVERSITY
THROW YOUR
“SNOWBALL” INTO THE
CRATE!
LOSS OF BIODIVERSITY DUE TO:
1. Loss of habitat
2. Demand for wildlife products
3. Pollution
4. Introduced species
Problems Associated with the Loss
of Biodiversity…
• Local:
• Global:
EXTINCTION
Disappearance of a species from all or
part of its range
1. Mass extinction: an extinction that
has killed many species at one time
Ex) Dinosaurs
2. Species Extinction: one species
disappears from the planet
Ex) Dodo bird, Tasmanian Devil
3. Local extinction: A species disappears from
1 location but may be found in another location
CONSERVATION EFFORTS
Today, we try to protect entire ecosystems AND
single species.
1.Seed Banking
2.Endangered Species Act (ESA)
3.Land Allocation (preserves)
4.Captive Breeding
ENDANGERED SPECIES ACTIVITY