Day 4: This is not good

The plan has changed, and I am going to have to stay here for longer than I thought. As I was about to leave the planet, I noticed something about the river that the humans probably had yet to discover: a decrease in the amount of phytoplankton. Though small, this type of plankton is essential for the survival of smaller fish and eels. This is horrible, without the phytoplankton, the smaller fish would lose a crucial food food source and have to prey on other organisms or simply die. Thus the other food sources for smaller fish would begin to decrease. Additionally, this would mean that the carp, sunfish, swans, and ducks would not have food to eat. If they do not have enough food to eat, then there would be a smaller population of the slightly larger fish and the ducks and swans would leave the biome. With a smaller amount of slightly larger fish, the bass, the bald eagle, and the humans would not only wipe out the entire population of such fish, but also starve to death when the fish are gone. Most of the organisms living in the freshwater biome depend on this small phytoplankton, and without it, all other organisms would simply starve to death or be eaten.