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Biology- A level AQA
7. Genetics, population, evolution and ecosystems
Conservation
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Cards (14)
Conservation
Protection and management of
species
and habitats in a
sustainable
way
Sustainable
Using resources in a way that meets needs, but allows the use of them
indefinitely
Conflicts
The effect of two differing needs on the
ecosystem
What are the reasons for conservation?
Personal
,
ethical
,
economic
,
cultural
and
aesthetic
reasons
How do you manage succession?
Prevent the
species
or ecosystem from changing to a point where previous species are no longer supported
What is an example of managing succession?
Grazing
and
burning
What are seed banks?
Stores of seeds that can be used to reintroduce
species
into the wild if they become endangered or extinct
What are the problems with seed banks?
They are
expensive
, time-consuming and can disturb the
eco-system
they are reintroduced to
What is captive breeding?
Breeding an
endangered
or
extinct
species in captivity with the goal of reintroducing it to the wild
What are some issues with captive breeding?
Some
species
have difficulty breeding outside of their wild habitats (e.g.
pandas
and
eels
)
Reintroduced animals can bring new diseases
What are fishing quotas?
Limits on the
amount
of fish that can be caught in order to reduce the
number
of fish being caught and killed
What are the issues with fishing quotas?
Limits
fishermen's
incomes
Throwing
already dead
fish back into the ocean purely to stay under quota
International cooperation is necessary
What are protected areas?
National parks and reserves that restrict
urban development
in order to protect
species
What is the problem with protected areas?
Increased
ecotourism
, which increases
pollution