david macías, Éric soriano & ian trueba. index species extinction habitat destruction ...
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David Macías, Éric Soriano & Ian Trueba
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Index Species extinction Habitat destruction Invasive species Poaching Endangered species Graphics
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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.
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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.
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Causes of the extinction Natural causes
AgingIllnessOther animal competence
Natural catastrophesFireDroughtHurricanes
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Causes of the extinction Not natural causes
PollutionPoachingExploitationIgnorance
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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.
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Impact on organisms Extinction becomes more likely Decrease the range of certain organisms
populations
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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
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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
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Conditions that lead to invasion
Fast growth Rapid reproduction High dispersal ability
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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
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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
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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
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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
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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)
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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
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IUCN Red List
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Thank you for your attention!Thank you for your attention!