Summary
OCR A-Level Biology Populations and Sustainability(1) Summary
Handwritten Summary by an Oxford Medical Student which covers all content necessary for an A* in Populations and Sustainability at OCR Biology A-Level.
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Immigration The movement of organisms into a given area:
Emigration The movement of organisms away from a given area
:
Density Independent factors Have effect on the whole population regardless of an Size
:
Earthquakes fires volcanic eruptions and storms
·
, ,
Interspecific Competition Competition between different species :
Intraspecific Competition Competition between members of the same
species
:
Conservation Maintenance of biodiversity through human action to maintain
diversity
:
Reclamation Process of habitats
restoring damaged
· :
Preservation human interference
Protection of diversity by restricting or
banning
:
Importance of conservation Economic social ethical
:
, ,
Aims of for
sustainability Preserve the environment ensure resources are available the
:
,
future generations ,
allow humans to live
comfortably ,
enable LEDs to develop
·
Sustainable Timber Culture
small-scale Trees cut the
ground coppicing to shoots to grow
·
are close to allow
:
new
This to allow the trees to
occurs
rotationally regrow
·
Large-scale : Practice selective
Cutting ,
replant trees ,
plant trees an
optimal distance apart ,
and maintain zones for indigenous people
manage pests pathogens ,
Sustainable
fishing
·
:
·
Common fisheries
Policy ·
limits the numbers of fish that can be caught
Use different sized mesh nets to prevent certain fish being Caught
·
Restrictions
fishing
seasons
·
on
fish farming to prevent population decreases
·
Animals Present :
Galapigos tortoise , flightless cormorant , marine iguana
Coastal zone :
Mangrove ,
saltbush Arid Zone Cacti Carob tree
:
,
Humid zone
:
trees , moss liverwort
,
Controlling human activities Park
rangers limiting access and migration of animals and humans
:
, ,
Animals Present whales emperor
penguins and Seals Plants lichen Moss algal
: :
, , ,
control of human activities Hunting waste disposal and soil contamination
:
,
↳ Antarctica 1961 Ensures scientific and tourism
Treaty cooperation Conservation
management
:
,
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