The purpose of this paper is to select a representative natural ecosystem in or near the Louisiana area such as a preserves or parks that are managed for native species. Once a representative is chosen, the major structural, and functional dynamics (processes) of that ecosystem including how it has changed over time will be explained. Next the subject is to explain how humans may have affected the ecosystem, and in conclusion an explanation of how that ecosystem’s structure and function can help or has helped to develop plans for its management, and restoration. The Nature Conservancy is a nonprofit organization that works in different countries and all 52 states to help safeguard important lands and waters for nature and people. The organization works to keep safe the plants, animals, and land free from decay by protecting the lands, and waters humans, and habitat need to survive. The organization also focuses on leaving a sustainable world for future generations. Clean water is a must for humans, and animals to live. Fresh water ecosystems provide water for plants, and fish for humankind to eat (Gomez, 2008). Not only in Louisiana, but also all around the world, rivers, and lakes are becoming contaminated, and this affects people, animals, and plants. Research shows that possibly by 2025 more than one-third of Earth’s population could face tremendous water shortages (Botkin & Keller, 2009). The Nature Conservancy works in many states, including Louisiana to shield from exposure freshwater ecosystems for humans and nature. The organization works particularly to protect the Mississippi River, the Atchafalaya River, and most importantly the Louisiana coast.