The species that invade a bare area to start the process of succession is called

Options

A. Climax community
B. Pioneer community
C. Ecological species
D. Standing crop

Answer

To solve the question, "The species that invade a bare area to start the process of succession is called," we will analyze the options provided and determine which one correctly identifies the species involved in the initial stages of ecological succession.

### Step-by-Step Solution:

1. **Understanding Ecological Succession**:
- Ecological succession is the process by which ecosystems change and develop over time. It involves a series of stages where different species colonize an area.

2. **Identifying the Key Term**:
- The question specifically asks for the species that first invade a bare area. This is crucial as it indicates we are looking for a term that describes the initial colonizers in an ecosystem.

3. **Analyzing the Options**:
- **Climax Community**: This refers to a stable and mature ecological community that has reached equilibrium after a series of successional stages. It does not refer to the initial colonizers.
- **Pioneer Community**: This term describes the first biotic community that establishes itself in a previously uninhabited or disturbed area. These are the first species to colonize bare areas, such as lichens and mosses.
- **Ecological Species**: This term is vague and does not specifically refer to the initial colonizers in succession.
- **Standing Crop**: This refers to the total biomass of organisms in a given area at a specific time, not to the species that initiate succession.

4. **Selecting the Correct Answer**:
- Based on the analysis, the correct answer is **Pioneer Community**. This term specifically refers to the first species that invade a bare area and start the process of succession.

### Final Answer:
The species that invade a bare area to start the process of succession is called the **Pioneer Community**.