Coral Reefs 1 – Abiotic Factors GIZMO

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Student Exploration: Coral Reefs 1 – Abiotic Factors Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary: consum... er, coral, coral bleaching, coral reef, filter feeder, food chain, food web, grazer, nutrients, ocean acidification, pH, plankton, predator, producer, sediment, zooxanthellae Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Look at the graph to the right. What does it show? Years and percentage of coral cover 2. Why do you think corals have declined since 1977? ? Gizmo Warm-up Coral reefs are some of the most diverse habitats on Earth, home to over a quarter of all marine species. The Coral Reefs Gizmo provides a simplified model of interactions among 10 key species in Caribbean reefs. In the Coral Reefs 1 exploration, you will focus on the effects of environmental factors on Caribbean reefs. 1. Click Advance year 10 times. Look carefully at the composition of the reef over time. Do you see any major changes? no big changes 2. Select the DATA tab. Check that Staghorn coral, Star coral, Sponges, and Algae are selected. Populations are given as a percentage of normal populations. What do you notice about these populations? populations stayed the same. Sponges went up slightly 3. On the right side of the Gizmo, select the SUMMARY tab. In a healthy reef, what are the values for Nutrient load, Water clarity, Coral cover, and the total number of fish species? Nutrient load: 4ppt Water clarity: 94% Coral cover: 49% Total fish species: 442 Reproduction for educational use only. Public sharing or posting prohibited. © 2020 ExploreLearning™ All rights reserved This study source was downloaded by 100000819946675 from CourseHero.com on 03-26-2021 05:29:25 GMT -05:00 https://www.coursehero.com/file/85553179/Copy-of-Copy-of-CoralReef1SE-1docx/ This study resource was shared [Show More]

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