Which of the following consequences is not the result of habitat fragmentation?

Options

A. Species become vulnerable to predators
B. Formation of smaller, sustainable populations
C. Movement of migratory birds to different seasonal patches
D. Formation of barriers, resulting in limited colonization by species

Answer

To answer the question "Which of the following consequences is not the result of habitat fragmentation?", we will analyze the potential consequences of habitat fragmentation and identify which one does not belong.

### Step-by-Step Solution:

1. **Understanding Habitat Fragmentation**:
- Habitat fragmentation refers to the process where large habitats are divided into smaller, isolated patches or fragments. This can occur due to human activities like urban development, agriculture, and road construction.

2. **Identifying Consequences of Habitat Fragmentation**:
- **Species Vulnerability to Predators**: As habitats become fragmented, species may become more exposed to predators. This is a direct consequence of fragmentation, as smaller populations are more easily targeted.
- **Formation of Smaller, Sustainable Populations**: This statement is misleading. Fragmentation typically leads to smaller populations that are less sustainable due to limited genetic diversity and resources. Thus, this is not a consequence of fragmentation.
- **Movements of Migratory Birds**: Habitat fragmentation can affect migratory patterns, as birds may need to travel further to find suitable habitats. This is indeed a consequence of fragmentation.
- **Formation of Barriers**: Fragmentation creates physical barriers that can limit the movement and colonization of species, leading to reduced genetic diversity and increased isolation. This is also a consequence of fragmentation.

3. **Conclusion**:
- Among the options provided, the statement regarding the formation of smaller, sustainable populations is not a consequence of habitat fragmentation. Instead, fragmentation usually leads to smaller, less sustainable populations.

### Final Answer:
The consequence that is not a result of habitat fragmentation is the **formation of smaller, sustainable populations**.