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OCR A-Level Biology Populations and Sustainability(1) Summary

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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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Uploaded on
October 11, 2023
Number of pages
1
Written in
2023/2024
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Summary

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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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Handwritten A-Level notes by an Oxford University Medical Student that specifically target the content needed for an A-A*.

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