Context

Planet Earth is a dynamic place full of life, and over millions of years, our ecosystems have undergone many changes. These changes occur in a process called ecological succession, which is the focus of our study.

Ecological succession is a process of progressive and orderly changes in an ecosystem over time. It is characterized by stages, or seres, each with a dominant community. It all starts with the colonization stage, known as the pioneer phase, followed by the consolidation phase, and finally, the climax, which is a state of equilibrium. The communities that develop during ecological succession are influenced by factors such as sunlight, soil, water, climate, and interactions between different species.

Understanding ecological succession is crucial for our understanding of the natural world, and also to help protect and conserve biodiversity. For example, after a forest fire destroys a forest, ecological succession is the process that allows the forest to regenerate. This concept is also important in agriculture, as it helps us understand how different species of plants and animals can be introduced into an ecosystem to improve soil productivity.

Practical Activity: Building an Ecological Succession Model

Project Objective

This project aims to stimulate the understanding of the ecological succession concept and develop research, communication, and collaboration skills.

Detailed Project Description

Groups will focus on understanding and graphically representing ecological succession from the pioneer phase to the climax through the construction of models. Simultaneously, they will research how human actions influence this process and the respective policies to ensure the planet's sustainability.

Required Materials:

• Cardboard or wood (base for the model)
• Paint, colored pencils, colored papers
• Clay or modeling clay
• Natural materials (pebbles, moss, wooden sticks, etc.)
• Research material (books, internet, videos)
• Paper and pen for notes and planning

Step-by-Step for Activity Execution:

1. Start the project by gathering the group and discussing the fundamentals of ecological succession. Use the suggested resources to learn more about the topic. Define the roles of each group member.

2. Begin researching how human actions influence ecological succession and what policies exist to ensure sustainability. Take note of the main findings.

3. Draw an initial sketch of the model on a piece of paper, dividing it into areas representing the different phases of ecological succession.

4. Start building the model, representing the pioneer phase (mosses and lichens), the consolidation phase (grasses and shrubs), and the climax phase (mature trees). Use the available materials creatively to represent the different stages.

5. While building the model, discuss the process you are representing. How do species change throughout the phases? How do factors like climate, soil, and light influence?

6. Conclude the model by incorporating human influence and researched sustainability policies. How could the model represent human impact on the ecosystem? How could these policies be represented?

7. Once the model is completed, take photos from different angles and ensure that the different phases of succession are clearly represented.

Deliverables and Written Document

After completing the model, the group will be responsible for writing a document detailing the creation process and the acquired learnings.

1. Introduction: Recall the definition of ecological succession and the importance of this concept. Provide context for the project and the group's objectives.

2. Development: Discuss the process the group followed to learn about ecological succession and create the model. Describe each phase in detail and explain the materials used. Also, address the results of the research on human influence and sustainability policies.

3. Conclusions: Conclude by discussing what the group learned about ecological succession and teamwork. Highlight the main challenges and successes of the project.

4. Bibliography: List all research sources used to learn about the topic and create the project.

Remember, the goal of this project is to learn more about ecological succession and how to creatively and visually represent it. Good luck!