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Diversity and Classification
Biodiversity and Agriculture
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Cards (12)
Define biodiversity
The
variety
of
living
organism
in an
area
Define a habitat
The
place
where an
organism
lives
Define a community
All the
populations
of
different
species
in a
habitat
What are the 2 levels of biodiversity?
Local
biodiversity
Global
biodiversity
What is local biodiversity?
You consider the
variety
of
different
species
living in a
small
habitat
that is
local
What is global biodiversity?
You consider the
variety
of
species
on
Earth
2 way biodiversity can be measured?
Species
richness
Index
of
diversity
What is species richness?
The number of
different
species
in a particular
area
at a particular
time
What is index diversity?
A way of measuring
species
diversity
It is a calculation to measure the
relationship
between the
number
of
species
in a
community
and the
number
of
individual
in each
species
Equation for measuring index of diversity:
N =
Total
number of
organisms
of
all
species
n = Total
number
of
organisms
of
one
species
E = 'Sum of'
One cause of a decrease in biodiversity?
Human
activity
Framing activity that reduces biodiversity?
Destruction
of
hedgerows
Selective
breeding
- narrows gene poole= less diversity
Monocultures
- only one plant species
Over-grazing
Filling in ponds and draining wetlands
Compromises with conservation and farming:
Remove
some
hedgerows
not
all
Only done in a
particular
area
or a particular
species
Crop
rotations
