Biodiversity 0.0 / 5 ? GeographyEcosystems and biodiversity under threatA2/A-levelEdexcel Created by: konradekeCreated on: 05-04-16 09:42 What is biodiversity? The key resource that provides a range of valuable goods and services. 1 of 18 What are some specific constituents of wellbeing? Security, Life materials, health, social relations 2 of 18 What is security? Personal safety, access to water, protection from disasters 3 of 18 What are life materials? Adequate ways of making a living, sufficient food and water 4 of 18 What is health? Acess to clean air and water 5 of 18 What are social relations? Mutual respect; a sense of belonging, being able to help others 6 of 18 What is genetic diversity? The range of genes found within a particular species 7 of 18 What is species diversity? The range or variety of plant and animal species present in an ecosystem 8 of 18 What is ecosystem diversity? The number of different ecosystems in an area 9 of 18 What is species richness? The number of species and the abundance of individual species 10 of 18 What is species endemism? The degree to which individual species are confined to a particular area 11 of 18 What is species disparity? The differences between species 12 of 18 What are physical factors which influence biodiversity? Size of area, climate, rate of nutrient recycling, topography and altitude, degree of isolation and climate change 13 of 18 What human factors influence biodiversity? Hunting, fishing, introduction of exotic or alien species, clearance for agriculture and settlement 14 of 18 What does the ecosystem scorecard identify as the most eco-stressed? Freshwater ecosystems 15 of 18 What does the Living Planet index identify as the most seriously threatened? Freshwater ecosytems are seriously threatened, as well as forest, grassland and marine ecosystems 16 of 18 What is the IUCN red list? An annual listing of endangered species that allows for the identification of extinction hotspots. 17 of 18 What is the Millennium Ecosystem Assessment? Highlights the tropical grasslands, marine and freshwater ecosystems and rainforests under the greatest threats. 18 of 18
Comments
No comments have yet been made