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33 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Definition of biodiversity |
The variety of living organisms in an area |
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Species definition |
A group of similar organisms that can reproduce to produce fertile offspring |
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Habitat definition |
The place in which a organism lives and thrives |
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Why are tigers and ligers a separate species? |
Ligers and tigers cannot reproduce to produce a fertile offspring |
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biodiversity importance |
Resons: Economical Ecological Ethical Aesthetic Agricultural |
EEEAA |
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Economical reasons for maintaining ting biodiversity? |
Food and drinks-cash crops Clothing-'wool from sheep' Drugs medicinal use health sector decline(taxil) Fuels(biofeuls) Material |
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Ecological reasons for maintaining biodiversity |
Effects food chain: for example; phytoplankton is the Base of marine food chain Nutrient cycles- decomposing worms make soil rich,no worms=bad soils which effect other plants. Climate- cutting respiring tree,s mean they can no longer absorb CO2 and so enhancing greenhouse effect. |
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Ethical reasons for maintaining biodiversity? |
Moral issues of killing other life Vegen arguments Religious reasons Animal rights Right to exist |
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Aesthetic reasons for maintaining biodiversity |
Plants and animals bring visual pleasure to us Zoo's Example,Eden project: conservation of plants so that people can visit and enjoy the visual pleasure from plants |
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Agricultural reasons for maintaining biodiversity |
Food for people Pest control-killing birds that eat insects will result in more insects! |
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How does climate change effect biodiversity |
Warmer climates =habits change for species Some may benefit such as plants may be able to grow in warmer arctic conditions Invasive species may enter an habitat effecting other organisms Extinction and endangered species increase such as polar bear due to warmer arctic |
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How disease effects biodiversity |
Fungal infections as increased fungus grow in warmer conditions Disease can effect crop yields and disrupt food chains |
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Best way of sampling |
Random |
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What is quadrat sampling? |
And quadrat is thrown randomly at random coordinate and the organisms found are recorded |
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How does a sweepnet work? |
Net is put into opposite water current. And water flows into net carrying organisms such as beetles |
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How does a Pouter work? |
Sucky sucky |
******* |
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How do you use a transect? |
A line taken across a habitat and samples are taken along the line Benefit: can provide corelllations data as the type of species can relate to where it was found |
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How to use pitfall trap |
Make a hole and cover with leaves and twigs and let organisms fall |
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Tull green trap |
Catches leaf litter |
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What is species richness |
Number of species in habitat More species=more rich habitat |
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Species eveness? |
Measure of the relative abundance of a species |
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How to measure diversity? |
Simpson index |
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What is in situ conservation? |
Conserving a species in its natural environment |
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How would you conserve a species in situ? |
Protect its habitat Control species introduction(such as not allowing invasive species) Promoting particular species that the protected species may thrive off. Legal protection against poaching |
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Advantages of in-situ conservation |
Conserve the species and habitat Little disruptive Good chance of population recovery |
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Disadvantages against in-situ conservation |
Very little control as the species are left in their natural environment in disrupted and so it could be hard to control external factors. For example; people may still get away from logging tree's |
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What is ex situ conservation? |
Conserving a species outside it's natural environment. |
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How can you conserve a species in ex situ? |
Relocate to a more controlled area Such as a biome for plants where the climate is artificially controlled.Breeding programmesSeed banks Breeding programmes |
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Advantages of ex situ conservation? |
Very controlled environment where you can reintroduce species More security and care of endangered species |
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Disadvantages of ex situ conservation? |
Less successful Expensive Zoo's are limited to very small number of species. |
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How international agreements help biodiversity? |
CITES convention on international trade of endangered species. Regulate trade Illegal to kill endangered species Limit trade Raise awareness (education) |
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What did the rio convention aim to do? |
Promote sustainability- maintaine current biodiversity level Responsibility- everyone responsible Guidence-how to conserve |
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EIA= |
Environmental impact assessment Asess impact which will be caused by certain development by; Estimating biodiversity (Simpson index) Aim to keep biodiversity the same Endangered species |
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