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Conservation and Biodiversity - Coggle Diagram
Conservation and Biodiversity
Red List Index: it shows trends in overall extinction risk for species
A RLI value of 1.0 equates to all species qualyfing as Least Concern. An RLI value of 0 equates to all species having gone extinct. A constant RLI value overtime indicates that the overall extinction risk the group is constant.
Extinction
A cause of extinction is deforestation, insasive species. Another cause is being unable to protect themselves form predators.
Active management of endagered species
Human intervention in conservation of an area. Some techniques used are restorarion which focuses in the restore land to natural state. Other techniques like recovery of threatened species, removal of introduced species, legal protection against development or pollution, captive breeding, and reintroduction programs are used.
Biological biodivesity
Large sites will avoid extinction with unexpected factors like fire or disease. Also, large sites have more resources and breeding sites
Evenness: how close in numbers each species is
Richness: number of differerent species present
A feature that can affect biodiversity is edge affect, that is boundaries between habitats or ecosystems. For example, at the edge of the forest, there is more sunlight, more wind and less moisture than at the center. As this leads to a decreased population on the edge
This describes the boundaries between habitats or ecosystem. The boundary is not a wall - there is disturbance from the outside which extends into the forest. If a forest has more edges more it will be disturbed.
Corridors affect biodiversity. Theyre used to connect isolated population.
Indicator species
Is an organism whose presence, absence or abundance reflects a specific enviromental condition
Biotic index
Is a measure of the health of an ecosystem. Intolerent species score highly, so a clean ecosystem will have a higher biotic index than a polluted ecosystem.
10= clean water only
1= tolerates very polluted water
Conservation Methdos
Ex situ
Conserve outside of own habitat
Some advantages of this are:
Some species become to rare
Destruction of natural habits can be necessary to remove threatened species
In situ
Conserve in own habitat
Some advantages of this are:
species remain adapted to their habitat
Animals mantain naturak behavior patterns
Species interact with each other, help to conserve the ecosystem