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Unit 2 - The Living World: Biodiversity TOPIC 2.1 Introduction to Biodiversity ENDURING UNDERSTANDING ERT-2 Ecosystems have structure and diversity that change over time LEARNING OBJECTIVE ERT-2.A Explain levels of biodiversity and their importance to ecosystems. ESSENTIAL KNOWLEDGE life - range of different things What does biodiversity literally mean (its word parts): _________________________________ Define the three levels of biodiversity: Diversity Diversity Habitat DiversityGenetic Biodiversity Species Biodiversity E ERT-2.A.1Biodiversity in anecosystem includes genetic,species, and habitat diversity. ERT-2.A.2 The more genetically diverse a population is, the better it can respond to Describes the amount of diversity within in the gene pool of a species. Describes the amount of diverse types of species in one area Describes the amount of different types of habitats within an ecosystem, or the world. environmental stressors. Additionally, a population bottleneck can lead to a loss of genetic diversity. ERT-2.A.3 Ecosystems that have a larger number of species are more likely to recover from disruptions. ERT-2.A.4 Loss of habitat leads to a loss of specialist species, followed by a loss of generalist species. It also leads to reduced numbers of species that have large territorial requirements. What level of biodiversity is illustrated in this drawing of a freshwater swamp? Species diversity - may types of plants and one type of animal shown. Habitat Loss _________ __________ is the number one cause of organism extinction. Why? With no habitat, there is no food, no shelter, no way to survive. Habitat diversity is shrinking across the globe as humans move into and take over more spaces. These habitats, and micro habitats, may contain specialist species that can not survive in any other location - and once their habitat is gone, they die off. Science of Curiosity
ERT-2.A.5 Species richness refers to the number of different Circle the statement that describes species richness. species found in an ecosystem. A temperate forest is home to broad leaf trees like oak and maple, along with many shrubs, ferns, and moss species. Animals include deer, opossums, racoon, and mice.. Within a particular species of frog, there is a lot of color variation. Brown, tan, green, and both speckled or solid. A saltwater march has high primary productivity, with hundreds of mangrove trees and thousands of Salt Hay Grass (Spartina patens) plants.rain forest Think about the Biomes. Name one Biome that would likely recover from an ecosystem disturbance relatively quickly. ________________ Why did you choose this biome? Rain forest ecosystems have a high species diversity, so they are able to recover more quickly fro a disturbance. tundra Name one Biome that would likely recover relatively slowly. ________________ Why did you choose this biome?