TOPIC 2.1 Introduction to Biodiversity KEY Unit 2 - The Living World: Biodiversity
ENDURING UNDERSTANDING ERT-2 Ecosystems have structure and diversity that change over time
LEARNING OBJECTIVE
ERT-2.A Explain levels of What does biodiversity literally mean (its word parts): _________________________________
life - range of different things
biodiversity and their
importance to ecosystems. Define the three levels of biodiversity:
Genetic Biodiversity
Diversity Species Biodiversity
Diversity EHabitat Diversity
ESSENTIAL KNOWLEDGE
ERT-2.A.1 Biodiversity in an Describes the amount of Describes the amount of Describes the amount of
ecosystem includes genetic, diversity within in the gene diverse types of species in one different types of habitats
within an ecosystem, or the
species, and habitat diversity. pool of a species. area
world.
ERT-2.A.2 The more
genetically diverse a population
is, the better it can respond to
environmental stressors. What level of biodiversity is illustrated in
Additionally, a population this drawing of a freshwater swamp?
bottleneck can lead to a loss of
genetic diversity. Species diversity - may types of
plants and one type of animal
ERT-2.A.3 Ecosystems that shown.
have a larger number of
species are more likely to
recover from disruptions. _________
Habitat __________
Loss is the number
one cause of organism extinction. Why?
ERT-2.A.4 Loss of habitat leads
to a loss of specialist species, With no habitat, there is no food, no
followed by a loss of generalist shelter, no way to survive. Habitat
species. It also leads to diversity is shrinking across the globe
reduced numbers of species as humans move into and take over
that have large territorial more spaces. These habitats, and
micro habitats, may contain specialist
requirements. species that can not survive in any
other location - and once their habitat
is gone, they die off.
Science of Curiosity
, ERT-2.A.5 Species richness Circle the statement that describes species richness.
refers to the number of different
species found in an ecosystem.
A temperate forest is home to Within a particular species of frog, A saltwater march has high
broad leaf trees like oak and there is a lot of color variation. primary productivity, with
maple, along with many shrubs, Brown, tan, green, and both hundreds of mangrove trees and
ferns, and moss species. Animals speckled or solid. thousands of Salt Hay Grass
include deer, opossums, racoon, (Spartina patens) plants.
and mice..
rain forest
Think about the Biomes. Name one Biome that would likely recover from an ecosystem disturbance relatively quickly. ________________ Why
did you choose this biome?
Rain forest ecosystems have a high species diversity, so they are able to recover more quickly fro a disturbance.
Name one Biome that would likely recover relatively slowly. ________________
tundra Why did you choose this biome?
Tundra have a low species diversity, so recover slowly from a disturbance.
Use colored pencils or markers to complete the drawing that models the
bottleneck effect. Each color represents a genetic variation within a species.
Explain why the first population was more resilient to environmental stressors
than the current (after bottleneck) population.
Before the bottleneck event, the species was very genetically
diverse. If there was an environmental change, chances were
high that some variation in the population would survive, allowing
the population to adapt. After the bottleneck, the genetic diversity
is much lower. A change in the environment is more likely to lead
to extinction, because there is less of a chance that the population
will adapt.
Science of Curiosity
ENDURING UNDERSTANDING ERT-2 Ecosystems have structure and diversity that change over time
LEARNING OBJECTIVE
ERT-2.A Explain levels of What does biodiversity literally mean (its word parts): _________________________________
life - range of different things
biodiversity and their
importance to ecosystems. Define the three levels of biodiversity:
Genetic Biodiversity
Diversity Species Biodiversity
Diversity EHabitat Diversity
ESSENTIAL KNOWLEDGE
ERT-2.A.1 Biodiversity in an Describes the amount of Describes the amount of Describes the amount of
ecosystem includes genetic, diversity within in the gene diverse types of species in one different types of habitats
within an ecosystem, or the
species, and habitat diversity. pool of a species. area
world.
ERT-2.A.2 The more
genetically diverse a population
is, the better it can respond to
environmental stressors. What level of biodiversity is illustrated in
Additionally, a population this drawing of a freshwater swamp?
bottleneck can lead to a loss of
genetic diversity. Species diversity - may types of
plants and one type of animal
ERT-2.A.3 Ecosystems that shown.
have a larger number of
species are more likely to
recover from disruptions. _________
Habitat __________
Loss is the number
one cause of organism extinction. Why?
ERT-2.A.4 Loss of habitat leads
to a loss of specialist species, With no habitat, there is no food, no
followed by a loss of generalist shelter, no way to survive. Habitat
species. It also leads to diversity is shrinking across the globe
reduced numbers of species as humans move into and take over
that have large territorial more spaces. These habitats, and
micro habitats, may contain specialist
requirements. species that can not survive in any
other location - and once their habitat
is gone, they die off.
Science of Curiosity
, ERT-2.A.5 Species richness Circle the statement that describes species richness.
refers to the number of different
species found in an ecosystem.
A temperate forest is home to Within a particular species of frog, A saltwater march has high
broad leaf trees like oak and there is a lot of color variation. primary productivity, with
maple, along with many shrubs, Brown, tan, green, and both hundreds of mangrove trees and
ferns, and moss species. Animals speckled or solid. thousands of Salt Hay Grass
include deer, opossums, racoon, (Spartina patens) plants.
and mice..
rain forest
Think about the Biomes. Name one Biome that would likely recover from an ecosystem disturbance relatively quickly. ________________ Why
did you choose this biome?
Rain forest ecosystems have a high species diversity, so they are able to recover more quickly fro a disturbance.
Name one Biome that would likely recover relatively slowly. ________________
tundra Why did you choose this biome?
Tundra have a low species diversity, so recover slowly from a disturbance.
Use colored pencils or markers to complete the drawing that models the
bottleneck effect. Each color represents a genetic variation within a species.
Explain why the first population was more resilient to environmental stressors
than the current (after bottleneck) population.
Before the bottleneck event, the species was very genetically
diverse. If there was an environmental change, chances were
high that some variation in the population would survive, allowing
the population to adapt. After the bottleneck, the genetic diversity
is much lower. A change in the environment is more likely to lead
to extinction, because there is less of a chance that the population
will adapt.
Science of Curiosity
