OCR A2 Biology: Conservation of Ecosystems

Beschreibung

A-Level Biology Karteikarten am OCR A2 Biology: Conservation of Ecosystems, erstellt von hannawin98 am 16/05/2016.
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Frage Antworten
What is conservation? The protection, management and reclamation of ecosystems (so that the natural resources in them can be used without them running out)
What economic reasons are there for conservation? 1. Ecosystems provide resources for things we need e.g drugs and food 2.These items are traded on a local and global scale 3. Therefore trade will be lost in the future without conservation
What social reasons are there for conservation? 1. Ecosystems bring joy because they're attractive to look at 2. They're used for activities e.g birdwatching and walking 3. species and habitats might be lost if they aren't conserved so future generations can't enjoy or use them
What ethical reasons are there for conservation? 1. It's the "right" thing to do 2. It could be endangered because of human acivity 3. We have a moral responsibility to conserve ecosystems for future generations
What ecological reasons are there for conservation? 1. Conservation could prevent climate change 2.Prevents the disruption of food chains
What is preservation? The protection of ecosystems so they're kept exactly as they are.
What negative effects have humans had on the Galapagos islands? 1. Humans have directly affected the populations of animals 2.Non-native animals are threatening native species 3.Non-native plants are threatening native plant population 4. Fishing has caused a fish population decrease
How can a temperate woodland be managed? 1. For every tree cut down a new one is grown. 2. Trees are cleared in strips/patches as woodland grows back quicker in smaller areas 3. Timber is harvested by coppicing so new trees don't have to be planted 4. Only native species are grown 5. Plants are attached to posts for support and kept in tubes to prevent grazing 6. Trees aren't grown too close to give them space to grow and so they have enough resources
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