Introduction Conservation is based on the resource use, the allocation and protection. Its first objective is to keep the biological diversity. Its second objective is the conservation of the energy. The people who practices the conservation are named conservationists.
Species extinction Extinction is the end of an organism or a group of them. The moment of the extinction is normally considered as the death of the last survivor of the species.
Causes of the extinction Natural causes Aging Illness Other animal competence Natural catastrophes Fire Drought Hurricanes
Causes of the extinction Not natural causes Pollution Poaching Exploitation Ignorance
Habitat destruction Habitat destruction means the natural habitats that for different reasons are unable to be used by the species. One of the reasons of the destruction is the human activity. Habitat destruction is a primary cause of species extinction.
Impact on organisms Extinction becomes more likely Decrease the range of certain organisms populations
Solutions Remain intact different sections of natural habitat Educate the public about the importance of the nature Considering adding services that provide the natural habitats prosperity
Invasive species They are species that have been introduced in a place that is not their usual habitat These species produce changes to the composition and the structure of the ecosystem Humans have changed their habitats, voluntarily or involuntarily
Conditions that lead to invasion Fast growth Rapid reproduction High dispersal ability
Stages of the invasion 0 – No danger 1 – Traveling 2 – Introduced 3 – Localized but rare 4a – Widespread but rare 4b – Localized and dominant 5 – Widespread and dominant
Poaching It is the illegal taking or hunting of a big number of organisms, especially these who are considered endangered species There are a lot of reasons to punish the poaching Illegal logging is also another form of poaching For example, in Philippines there are 400 animal endangered species that are illegal to hunt
Traditional Chinese medicine It often incorporates ingredients from plants, animals and minerals Parts of endangered species are used Poachers sell parts of these species in the black market
Slips of authority In Africa, although hunting for ivory was banned, poaching of elefants continues. In the USA some endangered species are only banned from fishing in a few states
Endangered species These species are at risk of becoming extinct, because for different reasons There’s a list that has calculated the percentage of endangered species around the world (The IUCN Red List)
IUCN Red List Extinct: Woolly mammoth, Dusky Seaside Sparroow Extinct in the wild: Hawaiian Crow, Wyoming Toad Critically endangered: Mountain gorilla, Bactrian Camel Endangered: Blue whale, Giant panda Vunerable: Cheetah, Lion Near threatened: American bison, Tiger shark Least concern: Pigeon, Giraffe