Biodiversity 0.0 / 5 ? BiologyEcology, ecosystems and environmental biologyASAQA Created by: sabby21Created on: 01-05-16 13:41 Define Habitat Diversity Number of different habitats found in an area. 1 of 21 Define Species richness Mean number of different species living in a particular area 2 of 21 Define Species evenness Mean measure of the abundance of each species in an area 3 of 21 Define Genetic Diversity Variety of Genes that make up a species 4 of 21 Where in the world is biodiviersity greatest? Closer to the equator 5 of 21 Why does greater genetic biodiversity give speices better chance of survival? Increases chance for adaptation for a changing environment. 6 of 21 What is random sampling? Selecting individuals by chance 7 of 21 What is non-random sampling? Sample not chosen randomly 8 of 21 Name 3 methods of non-random sampling. Opportunistic, Stratefied, Systematic 9 of 21 What is Opportunistic sampling? Use organisms conveniently available 10 of 21 What is Stratefied sampling? Divide population into subgroups and take proportional sample 11 of 21 What is Systematic sampling? Line or belt transect 12 of 21 What does a Pooter do? Catch small insects 13 of 21 What does a Pitfall trap catch? Crawling invertebrates 14 of 21 What factors affect biodiversity? HIPPOC 15 of 21 What are abiotic factors? Non-living factors in a habitat eg wind 16 of 21 Give an ecological reason for maintaining Biology. All organisms depend on each other for survival and removing keystone species could have large impacts 17 of 21 Give an economical reason for maintaining Biology. Organisms that become extinct may have had a key role in new medicines and chemicals 18 of 21 Give an aesthetic reason for maintaining Biology. Presence of different plants and animals enriches our lives 19 of 21 Name 2 international agreements to protect species and habitats. CBD (Rio convention) and CITES 20 of 21 What do CITES do? Prevents overexploitation by regulating trade 21 of 21
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