What is the difference between an environment with freshwater and an environment with pristine wates?

I need to design an experiment with a shrimp that is found in freshwater but not in pristine but I don't understand what is the difference between the two.

Thanks!

The terms "freshwater" and "pristine waters" refer to different types of aquatic environments. Understanding the distinctions between them will help you design your experiment accordingly.

Freshwater refers to bodies of water that contain low levels of salinity, usually less than 1% salt concentration. Freshwater environments include lakes, ponds, rivers, and streams. These waters are typically sourced from rainfall, melting snow, and underground springs, and they are not directly connected to the ocean. Freshwater environments support various organisms adapted to living in low-salinity conditions.

On the other hand, pristine waters generally refer to untouched or minimally impacted bodies of water that are free from pollution and human disturbance. Pristine waters are characterized by high water quality and generally have low levels of contaminants and pollutants. They can exist in both freshwater and marine ecosystems.

Now, to design your experiment with a shrimp that is found in freshwater but not in pristine waters, you first need to identify the key differences between these two types of environments. Look for factors that are typically absent or altered in pristine waters compared to freshwater environments. Some differences you might consider are:

1. Pollution levels: Pristine waters have minimal pollution, while freshwater environments can be affected by various sources of pollution, such as runoff from agricultural activities, industrial waste, or urban development. Shrimp that thrive in freshwater environments may have adaptations to tolerate or utilize some pollutants.

2. Nutrient availability: Pristine waters tend to have a more balanced nutrient composition, while freshwater environments can experience fluctuations due to discharges, nutrient runoff, or excessive fertilization. The shrimp you are studying might have specific requirements for certain nutrients found in freshwater but not in pristine waters.

3. Altered physical conditions: Pristine waters may have natural physical features that make them distinct from freshwater environments. For instance, pristine waters in marine ecosystems might have higher salinity, different temperature ranges, or stronger currents. The shrimp you are studying may have adaptations to specific physical conditions found in freshwater but not in pristine waters.

Once you have identified the key differences, you can design your experiment by simulating or manipulating these factors. For example, you could create different tank setups to mimic the pollution levels or nutrient conditions of freshwater environments while keeping the overall water quality pristine. You could also adjust salinity levels or other physical parameters to match those found in freshwater environments.

Remember, it's essential to ensure the ethical treatment of the shrimp during your experiment, providing them with appropriate living conditions and adhering to any legal requirements or guidelines related to animal welfare.

I hope this explanation helps you understand the differences between freshwater and pristine waters and guides you in designing your experiment effectively!