Island Biogeography Note sheet Unit2Biodiversity (1).pdf -...

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Unformatted text preview: Unit 2 - The Living World: Biodiversity TOPIC 2.3 Island Biogeography ENDURING UNDERSTANDING​ ERT-2 ​Ecosystems have structure and diversity that change over time LEARNING OBJECTIVE ERT-2.D​ Describe island biogeography. ESSENTIAL KNOWLEDGE ERT-2.D.1​ Island biogeography is the study of the ecological relationships and distribution of organisms on islands, and of these organisms’ community structures. B It is the largest and closer to the mainland ERT-2.D.2​ Islands have been colonized in the past by new species arriving from elsewhere. LEARNING OBJECTIVE ERT-2.E​ Describe the role of island biogeography in evolution. ESSENTIAL KNOWLEDGE ERT-2.E.1​ Many island species have evolved to be specialists versus generalists because of the limited resources, such as food and territory, on most islands. The long-term survival of specialists may be jeopardized if and when invasive species, typically generalists, are introduced and outcompete the specialists. D It is small and far away from the main lands B Which island would have the most generalist species? _____ Why? Because it has more resources due to its large size and has more territory D An invasive species is introduced to each island. Species on which island are more likely to go extinct? ____ Why? Because its the smallest and has less resources making it hard for the invasive species to exist Circle the statements that describe the ​founder effect​, and cross out the ones that do not! Science of Curiosity Unit 2 - The Living World: Biodiversity TOPIC 2.4 Ecological Tolerance ENDURING UNDERSTANDING​ ERT-2 ​Ecosystems have structure and diversity that change over time. LEARNING OBJECTIVE ERT-2.F​ Describe ecological tolerance ESSENTIAL KNOWLEDGE ERT-2.F.1​ Ecological tolerance refers to the range of conditions, such as temperature, salinity, flow rate, and sunlight that an organism can endure before injury or death results. ERT-2.F.2​ Ecological tolerance can apply to individuals and to species. Complete the graph showing the zone of tolerance for a shade-loving species of plant and sunlight. Using the numbers (rather than writing out the whole sentence) label the levels that... 1. The plants can survive, grow and reproduce 2. The plants can survive and grow, but not reproduce 3. The plants can survive 1. 4. The plants can not survive 5. 5. The plants’ fundamental niche 3. The range of tolerance of a species limits its geographical distribution. Explain how animals that hibernate or estivate are able to expand their distribution beyond their physiological range of tolerance. 2. 4. Animals that hibernate move to a different location. How do migratory organisms deal with conditions that are beyond their range of tolerance? These organisms migrate move to where they can live the best. For example birds fly migrate south in winter and back north in summer. THey move to where they can tolerate the best. Science of Curiosity ...
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