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If the community tooks steps toward restoring the natural shoreline and installing silt curtains for construction sites, then that would lead to healthier bodies of water that contain less cyanobacterial blooms.

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A non-living factor is the nutrients that is entering the water as run-off. This nutrients creates a positive environment for cyanobacteria to bloom. Looking at the amount of plants surrounding the body of water, I can determine how much of that nutrients is being absorbed before reaching the cyanobacteria. The non-living factor of nutrients (phosphorous) are interacting with the living factors of plants and cyanobacteria, causing their population to increase or decrease.

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If one part of the system is altered then the rest of the system is affected. An example would be if the level of phosphorus is low then the system (the cyanobacteria) then the bacteria has a harder time functioning because the high phosphorus is what fuels the cyanobacteria.

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An increase in phosphorus can cause bacteria populations to greatly increase meaning aquatic plants have less sunlight. The bacteria can also emit toxins causing neuro damage in organisms that use the water as a drinking source.

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Run off from certain fertilizers can cause an increase in phosphorus in an aquatic system which cyanobacteria use for nitrogen fixation. This  means the bacteria can bloom in turn blocking sunlight from reaching other organisms that need it.

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If people were to decrease their use of high-phosphorus fertilizers and prevent yard waste from washing into storm drains, that could decrease the amount of cyanobacterial blooms that form in waterways.

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Since Bacteria is a biological entities since bacteria is considered living. They interact through chemical interactions because they require phosphorus from lawn fertilize to thrive. Without high levels of phosphorous, the living environment isn't suitable for the cyanobacteria.

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As a limnologist I take samples to examine organisms and its interaction with its ecosystem. In this case, changes in oxygen content due to the break down of cyanobacteria by microbes will impact other organisms within the same system. The fish in the water will not be able to survive in the oxygen-deficient “dead zone” and therefore, are being impacted by cyanobacteria. This depletion will affect the fish’s internal system in its inability to get oxygen in the water through its gills.

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S4: Biological systems include and are affected by living and non-living factors in the environment. 

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S4: Biological systems include and are affected by living and non-living factors in the environment. 

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S3: Biological systems can be defined at different scales, interact within and across scales, and together form complex networks.

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S3: Biological systems can be defined at different scales, interact within and across scales, and together form complex networks.

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S2: Changes in one part of a biological system can influence or be influenced by other parts of the same system.

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S2: Changes in one part of a biological system can influence or be influenced by other parts of the same system.

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S1: Biological entities interact through chemical and physical signals that can be short-lived, depend on how they are organized in space, and are influenced by things in the environment. 

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S1: Biological entities interact through chemical and physical signals that can be short-lived, depend on how they are organized in space, and are influenced by things in the environment. 

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S5: Interactions between and among biological entities can generate new system properties.

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S5: Interactions between and among biological entities can generate new system properties.