Student Exploration: Coral Reefs 1 – Abiotic Factors
Horvema Reneze, Tyler Smith, jesus serrano Vocabulary: consumer, 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?it shows a decrease in coral reefs % over time
2.Why do you think corals have declined since 1977?They have decreased because the conditions, fishing, land use, and invasive species.
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, not reely i see th same fish/turtle.
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.Click Advance year 15 times. What do you notice about these populations?They are staying the same 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?4ppt, 94% water clarity, 49% coral cover This study source was downloaded by 100000823518935 from CourseHero.com on 08-16-2021 20:23:52 GMT -05:00 https://www.coursehero.com/file/28847719/Coral-Reefs-1-Gizmo-Abiotic-Factorsdocx/ This study resource was shared via CourseHero.com 1 / 2
Nutrient load: Water clarity: Coral cover: Total fish species:
Activity A:
The Caribbean reef ecosystem
Get the Gizmo ready:
●On the CONDITIONS tab, click Return to original settings. Click Restart.●Select the CORAL REEF tab.Introduction: A healthy Caribbean reef is home to over 50 species of coral and over 400 fish species. In this simplified model, we only consider the interactions of ten important species.
Question: How do different species interact in a healthy coral reef?
1.Describe: On the CORAL REEF tab, click on each organism shown in the table below. For each organism, give its name and what it eats (or how it obtains energy).PictureName What it eats (or how it obtains energy) staghorn coral by photosynthesis boulder star coral by photosynthesis spongesconsume plankton AlgeaPhotosynthesis stop light algea and coral queen angelfishsponges yellowtail snapper young fish, shrimp, crabs, worms.Nassua GrouperReef Fish long spined sea urchine alge hawksbill sea turtlesponges This study source was downloaded by 100000823518935 from CourseHero.com on 08-16-2021 20:23:52 GMT -05:00 https://www.coursehero.com/file/28847719/Coral-Reefs-1-Gizmo-Abiotic-Factorsdocx/ This study resource was shared via CourseHero.com
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