Transcript BIODIVERSITY

BIODIVERSITY
What does BIO mean?
What does Diversity mean?
Biodiversity
BIODIVERSITY
VS
POPULATION
BIODIVERSITY-
POPULATION-
BIODIVERSITY IN WEST MILTON, OHIO
PLANTS
ANIMALS
• There are three major kinds of habitat loss:
• Habitat _________________: A bulldozer pushing down trees is the iconic
image of _______________________. Other ways that people are directly
destroying habitat, include ___________ in ____________, dredging
rivers, mowing fields, and ______________ down _____________.
• ____________________: Much of the remaining terrestrial wildlife
habitat in the U.S. has been cut up into fragments by ______________
and _________________. Aquatic species’ habitat has been fragmented
by _____________ and water diversions. These fragments of habitat may
not be large or connected enough to support species that need a large
territory in which to find mates and food. The loss and fragmentation of
habitat make it difficult for _______________ species to find places to rest
and feed along their migration routes.
• Habitat ________________: Pollution, invasive species and disruption of
ecosystem processes (such as changing the intensity of fires in an
ecosystem) are some of the ways habitats can become so
___________________ that they no longer support native wildlife
INVASIVE SPECIES
• __________________ are plants, or animals that are non-native (or
alien) to the ecosystem and _____________ ______________.
• They can harm to the environment, the economy or even, human
health. Species that grow and reproduce quickly, and spread
_________________, with potential to cause harm, are given the
label of “invasive”.
• An invasive species does not have to come from another
________________. For example, lake trout are native to the Great
Lakes, but are considered to be an invasive species in Yellowstone
Lake in Wyoming because they compete with native cutthroat trout
for habitat.
Characteristics of Invasive Species
• Reproduce _________________
• Able to survive and ____________ to new
conditions
• Few natural ______________, competitors or
parasites
• Very difficult to _________________ once
established
Pollution
• Pollution is currently ________________ all
forms of life, both on land and in the water, and
contributing to climate change. Any chemical in
the wrong place or at the wrong concentration
can be considered a pollutant. Transport,
industry, construction, extraction, power
generation and agroforestry all contribute
_______________ to the air, land and water.
These chemicals can directly affect biodiversity or
lead to chemical imbalances in the environment
that ultimately kill individuals, species and
habitats.
Types of Pollution
• _______________ Source Pollution
• _________________Source Pollution
List sources of pollution in West
Milton, Ohio
Draw two diagrams
• 1. Draw an example of Point Source Pollution
– Explain how it affects biodiversity
– 2. Draw an example of Non Point Source Pollution
• Explain how it affects biodiversity
Population Growth
• Human populations are growing at an
exponential rate, resulting in the problems above.
There are more than 7 billion people in the world,
and although natural disasters, disease and
famines cause massive human mortality, we are
getting better at surviving and the population just
keeps growing. Human population numbers
tripled in the twentieth century and although
growth is slowing, one estimate predicts it will
take until the twenty-third century for them to
level out at around 11 billion
Human Population Growth Rates
• http://www.census.gov/popclock/?intcmp=ho
me_pop
Population vs Space Available