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Systems and Models
The Ecosystems
Human Population, Carrying Capacity and Resource Use
Conservation and Biodiversity
Pollution Management
The Issue of Global Warming
Environmental Value Systems
Survivorship Curves
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Survivorship Curves
Type
I
: mortality occurs in the elderly
e.g: If there's ONE offspring:
>they are offered a lot of parental care
>well adapted into their environment
Type
III
: Juvenile mortality is high (R strategist)
>No parental care
Type
II
: Many organisms do not fit neatly into K- or R- strategists, they are somewhere in between.
>This means mortality does not depend on age.
e.g: Large fish
>Produced in smaller number
>Little parental care
>May die because of predation, humans, hunting (by humans) , competition, disease,unlikely by old age
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Survivorship Curves
Type I : mortality occurs in the elderly
e.g: If there's ONE offspring:
>they are offered a lot of parental care
>well adapted into their environment
Type III: Juvenile mortality is high (R strategist)
Type II: Many organisms do not fit neatly into K- or R- strategists, they are somewhere in between.
- >This means mortality does not depend on age.
e.g: Large fish