An ecosystem found inland or inside forest around a lake where rivers or streams flow.

It seems like you're asking about a specific type of ecosystem. This ecosystem is typically referred to as a freshwater ecosystem, specifically a lake or pond ecosystem. Here's a step-by-step breakdown:

1. Location: This ecosystem is found inland, often inside a forest. It is not connected to the ocean, hence the term "freshwater".

2. Water Source: The water in this ecosystem comes from rivers or streams that flow into the lake or pond. Rainwater and groundwater are also common sources.

3. Biodiversity: Freshwater ecosystems like these are home to a variety of plant and animal species. Aquatic plants provide oxygen and food for animals, while the water provides a habitat for fish and other aquatic creatures.

4. Nutrient Cycle: Nutrients in this ecosystem are cycled through the food chain. Plants absorb nutrients from the water and soil, animals eat the plants, and when the animals die, their bodies decompose and return the nutrients to the soil and water.

5. Human Impact: Human activities can greatly impact these ecosystems. Pollution, overfishing, and changes in water flow can harm the plants and animals that live there.

6. Conservation: Protecting these ecosystems is important for maintaining biodiversity and water quality. This can be done through pollution control, sustainable fishing practices, and habitat restoration.