AP Environmental Science 2019 Unit 2_ Biodiversity.pdf -...

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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 ERT-2.A.1 Biodiversity in an ecosystem includes genetic, species, and habitat diversity. ERT-2.A.2 The more genetically diverse a population is, the better it can respond to 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. What does biodiversity literally mean (its word parts): It means the many different kinds (diversity) of life (bio-), or the number of species in a particular area Define the three levels of biodiversity: What level of biodiversity is illustrated in this drawing of a freshwater swamp? It has a high level of biodiversity. Habitat Destruction is the number one cause of organism extinction. Why? It is the largest cause for the loss of habitats, which can lead to decreases in biodiversity. Genetic Diversity: the total number of genetic characteristics in the genetic makeup of a species Species Diversity: the number of species and abundance of each species that live in a particular location Habitat Diversity: the number of different habitats that one particular region can provide
ERT-2.A.5 Species richness refers to the number of different species found in an ecosystem. Circle the statement that describes species richness. Think about the Biomes. Name one Biome that would likely recover from an ecosystem disturbance relatively quickly. Tropical forests Why did you choose this biome? Name one Biome that would likely recover relatively slowly. Tundra Why did you choose this biome?

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