How humans threaten wildlife
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How do humans deliberately exploit wildlife
• deforestation • combustion • take for medicine • hunting -pollution
What example is used for the unsustainable exploitation for food
• the dodo became extinct because of deforestation and hunting
Examples of unsustainable exploitation for fashion
• elephants • rhino • snake skin
How and why have humans exploited snow leopards
• killed by farmers if their livestock is endangered • hunt and kill their prey • habitat loss
Examples of unsustainable exploitation for pets and entertainment
• force bears, elephants and tigers in circuses to perform confusing and physically demanding tricks
How and why have humans exploited the yellow headed parrot
• they are sold and captured in pet trade • it has undergone a 90% population decline since the mid 1970’s to 7000 birds in 1994
How have yellow headed parrots been protected
• TIDE’s terrestrial team have set up an artificial nest box program to offer greater protection and increase in survival
What is CITES
• the convention on international trade in endangered species of wild fauna and flora • appendix 1: all species where international trade is banned • appendix 2: trade is closely monitored and restricted
Examples of unsustainable exploitation for furniture and ornaments
• leather • taxidermy • animal skins
Examples of unsustainable exploitation for traditional medicines
• bears - bile - used in fevers, heart diseases • tigers - bones, teeth etc - malaria, insomnia
Examples of eradication of predators and pests
• eradicate a vector disease • protect livestock • mosquitoes and malaria • animals that threaten humans
What are the unintentional harm by other activities
• trampling • roadkill • littering • urbanisation
How have species been introduced to non-native areas
• been transported by boats • by ballast water • climate change causing migration pattern change • escaped or abandoned pets
2 examples of introduced species
• american mink - were brought to the uk to be used in fur farms and were released by activists - they were very territorial and aggressive • grey squirrel - introduced in 1876 as they looked very exotic - they outcompeted red squirrels and damaged trees
What’s the definition of biotic
• relating to or resulting from living organism
What’s the definition of abiotic
• physical rather than biological ; not derived from living organisms
What are the 6 abiotic factors that humans change
• water availability • dissolved oxygen • temperature • ph • water turbidity • physical damage
How do humans change water availability
• agriculture = ^ irrigation • climate change = melting ice caps
How do humans change dissolved oxygen
• ^ eutrification - fertilizers get into water • temperature -colder water dissolves more oxygen
How do humans change temperature
• climate change - increase in CO2 • releasing hot fluids from power stations
How do humans change ph
• combustion of ff - ocean acidification - more CO2 dissolved in water • burn coal, sulphur, sulphur dioxide - acid rain
How do humans change water turbidity
• pollution - releases pollutants into water ways - ^ turbidity • decreases turbidity - building dams - slows flow of water
How do humans change physical damage
• clearance for development • dropping litter
Activities that destroy habitats on a large scale
• dredging • destructive fishing • urbanisation • deforestation • combustion of ff