logging in or signing up Ecological Succession (Rachel Inting) mashielasaet Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1735 Category: Science & Tech.. License: All Rights Reserved Like it (6) Dislike it (0) Added: February 28, 2010 This Presentation is Public Favorites: 3 Presentation Description No description available. Comments Posting comment... By: jnvjalandhar (19 month(s) ago) This is good presentation.It explains primary and secondary sucessin very well. Its going to help me a lot in teaching to my students. Saving..... Post Reply Close Saving..... Edit Comment Close By: roshnimd (26 month(s) ago) good presentation Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Slide 1: Ecological Succession: A Constant Change Specific Objectives: : Specific Objectives: Define ecological succession. Identify the patterns of successional change. Explain the role of disturbance in communities. Differentiate primary succession and secondary succession. Describe the mechanisms of successional change through the models of succession. Share ideas on how man can contribute to the rapid restructuring and succession of a disturbed ecosystem. Slide 3: Motivational Activity 1. “What happened?” A cleared patch of ground The same ground, 2 years later Slide 7: Ecological succession is the process by which a community develops following a disturbance. Slide 8: Ecological Succession Bare substrate Colonizing stage Successionist stage Climax stage Slide 9: Primary Succession follows a major disturbance that removes all living things from the region. It begins with the pioneering species that are able to colonize physically harsh environments. Slide 10: Secondary Succession follows a less drastic disturbance that leaves soil and some living things. It proceeds faster than primary succession Slide 11: Many factors including volcanic eruptions, storms, rainfall, hurricanes, fire, and other human activities, disturb the ecological communities. Key Ideas: : Key Ideas: Ecological succession is the process by which a community develops following a disturbance. The entire sequence of stages in succession is a sere. Each stage or community is a seral stage. The final stage is the climax. Many factors including volcanic eruptions, storms, rainfall, hurricanes, fire, and other human activities, disturb ecological communities. Primary succession follows a major disturbance that removes all living things from the region. It begins with pioneering species that are able to colonize physically harsh environments. Secondary succession follows a less drastic disturbance that leaves soil and some living things. It proceeds faster than primary succession Key Ideas: : Key Ideas: The mechanisms of succession: facilitation, tolerance and inhibition, explain how the changes in the vegetation and the physical environment interact. Succession involves the whole community, not just the plants. The frequency of disturbance in most communities suggests that the climax is an ephemeral stage. Even when communities mature, they are still dynamic and always changing. Activity 1.1 “Who Succeeds?” : Activity 1.1 “Who Succeeds?” Objectives: 1. Define ecological succession and differentiate primary and secondary succession. 2. Describe briefly how the pond developed. 3. Rank the organisms of the pond in the order of their appearance. Materials: plankton net, stick with a can attached to the end, paper and pen Procedure: 1. Go to a nearby pond. Observe the conditions of the pond. 2. Sketch the pond showing the bottom and the organisms in all levels from the bottom to the top including the sides. 3. Find out the condition of the bottom using a stick with a can attached to its end. Scoop a sample of the soil or debris. A plankton net may be used to get a sample of the water. Slide 15: Questions: What are the things you find in the pond? Describe the bottom of the pond. How would you describe the water? What could be the appearance of the water at the beginning or when the pond was younger? 5. What is the condition of the water now? 6. Rank the organisms listed below in the order of appearance or succession in the pond. grasses fish algae frogs sedges crustaceous striders, etc. mosses dragonflies weeds mosquitoes herbs worms shrubs water Is the pond stable? Explain your answer? What happens to the organisms if conditions become unfavorable? With respect to succession, how do plants differ from animals? Activity 1.2 Observing Ecological Succession : Activity 1.2 Observing Ecological Succession Objectives: 1. Define ecological succession and differentiate primary and secondary succession. 2. Determine how environmental disturbances affect succession. 3. Describe how predictable is succession in general. Materials: By group: pumpkin or large squash, knife, digital camera (optional) Procedure: 1. Cut the pumpkin or squash in half and place it outside, some groups in shaded areas, some in sunlight (as possible). 2. Record preliminary observations, i.e., outdoor temperature, relative humidity and rainfall. Students should also describe the initial condition of the squash, such as color, texture and firmness. 3. Observe the squash over a period of days or weeks. Record the number of different insect type present. Note any changes to the vegetable matter, and continue to record environmental data. Slide 17: Questions: Describe the pioneer organism in this example. How is the insect community changing? What are some ways in which the insect communities could be interacting? 4. Why do different groups of insects appear at different times? Activity 1.3 “The only constant is … change” (Values Integration) : Activity 1.3 “The only constant is … change” (Values Integration) Objectives: 1. Cite a specific disturbance that has caused changes in a certain community. 2. Discuss the ecological succession that has taken place in that community. 3. State the implication of succession to the evolution of species. 4. Identify what can be done to help restructure an ecosystem after a disturbance. Materials: manila paper/cartolina, coloring pens Procedure: 1. A small group discussion will be done based from the given objectives. 2. The group illustrates their idea on how to restructure an ecosystem after a disturbance on a manila paper. 3. A representative from the group will discuss to the class their output. Evaluation: Examining the Stages of Ecological Succession : Evaluation: Examining the Stages of Ecological Succession Slide 20: The Beech-maple Forest of Michigan Slide 21: Thank you ... You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Ecological Succession (Rachel Inting) mashielasaet Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1735 Category: Science & Tech.. License: All Rights Reserved Like it (6) Dislike it (0) Added: February 28, 2010 This Presentation is Public Favorites: 3 Presentation Description No description available. Comments Posting comment... By: jnvjalandhar (19 month(s) ago) This is good presentation.It explains primary and secondary sucessin very well. Its going to help me a lot in teaching to my students. Saving..... Post Reply Close Saving..... Edit Comment Close By: roshnimd (26 month(s) ago) good presentation Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Slide 1: Ecological Succession: A Constant Change Specific Objectives: : Specific Objectives: Define ecological succession. Identify the patterns of successional change. Explain the role of disturbance in communities. Differentiate primary succession and secondary succession. Describe the mechanisms of successional change through the models of succession. Share ideas on how man can contribute to the rapid restructuring and succession of a disturbed ecosystem. Slide 3: Motivational Activity 1. “What happened?” A cleared patch of ground The same ground, 2 years later Slide 7: Ecological succession is the process by which a community develops following a disturbance. Slide 8: Ecological Succession Bare substrate Colonizing stage Successionist stage Climax stage Slide 9: Primary Succession follows a major disturbance that removes all living things from the region. It begins with the pioneering species that are able to colonize physically harsh environments. Slide 10: Secondary Succession follows a less drastic disturbance that leaves soil and some living things. It proceeds faster than primary succession Slide 11: Many factors including volcanic eruptions, storms, rainfall, hurricanes, fire, and other human activities, disturb the ecological communities. Key Ideas: : Key Ideas: Ecological succession is the process by which a community develops following a disturbance. The entire sequence of stages in succession is a sere. Each stage or community is a seral stage. The final stage is the climax. Many factors including volcanic eruptions, storms, rainfall, hurricanes, fire, and other human activities, disturb ecological communities. Primary succession follows a major disturbance that removes all living things from the region. It begins with pioneering species that are able to colonize physically harsh environments. Secondary succession follows a less drastic disturbance that leaves soil and some living things. It proceeds faster than primary succession Key Ideas: : Key Ideas: The mechanisms of succession: facilitation, tolerance and inhibition, explain how the changes in the vegetation and the physical environment interact. Succession involves the whole community, not just the plants. The frequency of disturbance in most communities suggests that the climax is an ephemeral stage. Even when communities mature, they are still dynamic and always changing. Activity 1.1 “Who Succeeds?” : Activity 1.1 “Who Succeeds?” Objectives: 1. Define ecological succession and differentiate primary and secondary succession. 2. Describe briefly how the pond developed. 3. Rank the organisms of the pond in the order of their appearance. Materials: plankton net, stick with a can attached to the end, paper and pen Procedure: 1. Go to a nearby pond. Observe the conditions of the pond. 2. Sketch the pond showing the bottom and the organisms in all levels from the bottom to the top including the sides. 3. Find out the condition of the bottom using a stick with a can attached to its end. Scoop a sample of the soil or debris. A plankton net may be used to get a sample of the water. Slide 15: Questions: What are the things you find in the pond? Describe the bottom of the pond. How would you describe the water? What could be the appearance of the water at the beginning or when the pond was younger? 5. What is the condition of the water now? 6. Rank the organisms listed below in the order of appearance or succession in the pond. grasses fish algae frogs sedges crustaceous striders, etc. mosses dragonflies weeds mosquitoes herbs worms shrubs water Is the pond stable? Explain your answer? What happens to the organisms if conditions become unfavorable? With respect to succession, how do plants differ from animals? Activity 1.2 Observing Ecological Succession : Activity 1.2 Observing Ecological Succession Objectives: 1. Define ecological succession and differentiate primary and secondary succession. 2. Determine how environmental disturbances affect succession. 3. Describe how predictable is succession in general. Materials: By group: pumpkin or large squash, knife, digital camera (optional) Procedure: 1. Cut the pumpkin or squash in half and place it outside, some groups in shaded areas, some in sunlight (as possible). 2. Record preliminary observations, i.e., outdoor temperature, relative humidity and rainfall. Students should also describe the initial condition of the squash, such as color, texture and firmness. 3. Observe the squash over a period of days or weeks. Record the number of different insect type present. Note any changes to the vegetable matter, and continue to record environmental data. Slide 17: Questions: Describe the pioneer organism in this example. How is the insect community changing? What are some ways in which the insect communities could be interacting? 4. Why do different groups of insects appear at different times? Activity 1.3 “The only constant is … change” (Values Integration) : Activity 1.3 “The only constant is … change” (Values Integration) Objectives: 1. Cite a specific disturbance that has caused changes in a certain community. 2. Discuss the ecological succession that has taken place in that community. 3. State the implication of succession to the evolution of species. 4. Identify what can be done to help restructure an ecosystem after a disturbance. Materials: manila paper/cartolina, coloring pens Procedure: 1. A small group discussion will be done based from the given objectives. 2. The group illustrates their idea on how to restructure an ecosystem after a disturbance on a manila paper. 3. A representative from the group will discuss to the class their output. Evaluation: Examining the Stages of Ecological Succession : Evaluation: Examining the Stages of Ecological Succession Slide 20: The Beech-maple Forest of Michigan Slide 21: Thank you ...