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6.3.2 Populations and sustainability - Coggle Diagram
6.3.2 Populations and sustainability
the factors that determine size of a population
explain each stage for a typical population growth curve
what is the
carrying capacity
?
what
limiting factors
will affect the carrying capacity?
abiotic
biotic
how will
migration
affect population size?
immigration
emigration
what are
density independent
factors?
interactions between populations
interspecific
competition eg grey and red squirrels
intraspecific
competition eg two grey squirrels
types of competition
predators
-explain each curve as a predator prey cycle (top line = hares, bottom line = lynx)
competitive exclusion
resource partitioning
character displacement
the reasons for, and differences between,
conservation and preservation
what is
conservation
?
what is
preservation
?
reasons for conserving biological resources
economical reasons
social reasons
ethical reasons
how the management of an ecosystem can
provide resources in a sustainable way
what is a
sustainable resource
?
what are the
aims
of sustainability?
sustainable
timber
production
small-scale
timber production
coppicing
polarding
large-scale
timber production
felling
how do timber companies make felling sustainable?
disadvantages of felling
sustainable
fishing
how is fishing made sustainable?
advantages of fish-farming
disadvantages of fish farming
the management of environmental resources and
the effects of human activities
how ecosystems can be managed to balance the conflict between conservation/ preservation and human needs
Masai Mara
region in Kenya
Terai region of Nepal
peat bogs
the effects of human activities on the animal and plant populations and how these are controlled in environmentally sensitive ecosystems
the Galapagos Islands
Antarctica
Snowdonia National
Park
the Lake District
