OCR A-Level Biology Populations and Sustainability(1) Summary
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Course
Unit 6
Institution
OCR
Handwritten Summary by an Oxford Medical Student which covers all content necessary for an A* in Populations and Sustainability at OCR Biology A-Level.
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
·
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