After Song Qiumin called her mother's family over, she paid according to the dividends. She was not a person who valued money very much. In addition, her brother and sister-in-law were also simple fishermen, so the two sides agreed to settle accounts every month, and after deducting the expenses, she and her brother's family accounted for four or six cents.

Several people chatted a lot at the table and ate a lot. In spring, wild vegetables were the best food, and Ao Muyang ate it and loosened his belt.

Shepherd's purse seafood rolls can be used as vegetables and rice. This is baked with oil. It has the fresh aroma of shrimp and crabs, the fragrance of shepherd's purse, and the fragrance of peanut oil. In addition, shepherd's purse is still tender at this time, and it is indeed delicious.

Especially this kind of wild vegetable roll can be eaten dipped in garlic paste, which is also appetizing. Lao Ao is so happy to eat it.

What made him even happier was that the big dragon came back and caught a lot of sardines.

Once a year, the season for sardines to catch sardines is coming again.

But, extreme happiness leads to sorrow.

After Lao Ao was happy for a few days, something that made him very upset came.

He had just gotten up that morning, and then the general pulled himself up and barked.

For some reason, Ao Muyang suddenly thought of Sun Beilong. When he heard the general call, he thought that Sun Beilong had come to his house again.

As a result, he went over and opened the door and saw that it was two lights knocking on the door.

Seeing this, he breathed a sigh of relief and asked in angrily: "When are you back?"

Since the last time he found out that Er Deng colluded with outsiders to frame him, he has completely lost his favor with Er Deng. The village's attitude is the same as him. Er Deng is very picky about Er Deng, and Er Deng has a little bit of eyesight. Later, he ran to the upper floor of the county to live.

However, he returned to the village during the Chinese New Year. Ao Muyang knew it, but pretended not to know it. He was too lazy to see this guy.

Erdeng drooped his eyelids and said, "Well, isn't this coming Qingming Festival? Don't I come back to visit my parents' graves? It's not the village chief, this is not important. I have something important to tell you. The blood of the Dragon King emerged from the sea. I saw it when I went to repair the boat in the morning. I came to you to report this matter to you."

Ao Muyang was stunned and asked subconsciously: "The Dragon King's blood was coming out on the sea? Why didn't I receive the news introduction? This thing suddenly appeared?"

Dragon King Blood is a common name, but it is actually the Red Tide.

The formation of red tides has existed since ancient times, but in ancient times, local fishermen had no knowledge and did not know the reason for the formation of red tides, so they saw that the sea water turned red and the fish and shrimp died in large numbers, and they were regarded as blood flowing out of the dragon's injury.

In addition, the current red tide is often caused by sea water and explosive reproduction of plankton. However, in ancient times, the pollution of the ocean was light, mostly after tsunamis, hurricanes and other natural disasters.

These natural disasters have caused violent changes in seawater up and down, and a large amount of plankton in the sea is enriched, which has led to a large number of seaweeds.

How could fishermen in ancient times understand this principle? They thought of natural disasters, thinking that there were evil dragons fighting in the sea, which led to natural disasters. In addition, the result of the struggle was that the evil dragon was injured and bleeding, and then the dragon blood stained the sea red.

When Ao Muyang learned that the red tide was formed, he hurried to the beach to check it out. There were manatees, turtles, dolphins, etc. in the sea outside the village. They either eat seaweed or fish and shrimp. Once a red tide occurs, it will have a great impact on them.

Many red tide creatures secrete red tide toxins. This thing has a professional name called Yubei Poison. Its toxicity is 80 times higher than cobra toxins and 100,000 times stronger than ordinary anesthetics such as procaine and cocaine.

Common red tide toxins include paralytic shell poison, diarrhea shell poison, neurophysic shell poison, memory loss shell poison, Siga fish poison, etc. Among them, paralytic shell poison is the most widely distributed and most harmful toxins in the world.

When fish and shellfish are in the toxic red tide area, they eat these toxic organisms and cannot be poisoned to death, biological toxins can accumulate in the body.

In this way, if poisoned fish, shrimp, shellfish are accidentally eaten by humans, dolphins, or sea turtles, it can easily cause poisoning of the body and in severe cases it can lead to death.

Sure enough, he went to the beach and looked carefully and saw that the sea surface was darkly red.

Ao Muyang knew that the process of red tide can be roughly divided into four stages: starting, developing, maintaining and extinction. At the beginning stage, there are a certain number of red tide organisms in the sea area, and the various physical and chemical conditions of the water environment at this time are basically suitable for the growth and reproduction of a certain red tide organism.

However, the sea water at the initial stage cannot see the color change. As long as the color change occurs, it will at least enter the development stage.

Ao Muyang quickly called Ao Daguo and asked him to take people out to drive a boat and cast nets to catch these seaweed to see the situation.

Erdeng volunteered: "Miss Minister, my boat is in good condition, I just repaired it."

"No need." Lao Ao was very annoyed to him, Made, the man he cheated on. As the village chief, he did not cheat on the richest man in the village. Why did this grandson dare to cheat?

Ao Daguo drove his own ship and scattered his small eyes and fishing nets to sweep it on the sea. Ao Muyang squatted on the dock and thought hard about countermeasures.

The red tide is caused by phytoplankton. Most of them are single-celled plants, including dinoflagellates, including diatoms, green algae, cyanobacteria, golden algae, etc. These phytoplankton plants are very small alone and need to be seen clearly with a microscope, but they can be caught after being connected.

The fishing net dragged it around the sea and put it away. It was covered with small seaweed of different shapes. It was squeezed with your hands and spread out.

Ao Muyang smelled the smell, and there was no smell. It was indeed the early days now.

He called Dai Zongxi and told him about the discovery of Chi Chao.

Red tides are a major disaster for fisheries and can destroy the ecological balance. Because red tide organisms are too small, they can gather in the gills of fish, causing fish to suffocate and die due to lack of oxygen. In addition, after the death of red tide organisms, the algae will consume a large amount of dissolved oxygen in the water during the decomposition process, causing fish and other marine organisms to die due to lack of oxygen. Furthermore, there is toxicity, which can be left to love.

After hearing his words, Dai Zongxi was a little puzzled: "It's still early March, why does a red tide appear?"

Red tides occur most in May and June, and in April and August, and in March, it is indeed rare.

Ao Muyang said helplessly: "This depends on your official research to provide the results. I think it may be related to the warm winter in the past."

He just searched online and found that there are many reasons for the formation of red tides. The cause is seawater pollution. The eutrophication of seawater is the material basis and primary condition for the occurrence of red tides. Changes in hydrological meteorological and seawater physicochemical factors are important reasons for the occurrence of red tides.

Among them, oceanography experts found that there is a sign of red tides, that is, the water temperature suddenly rises more than two degrees Celsius within a week.

Lao Ao thought about it. This year is warm winter and warm spring. Spring is warming up very quickly. The sun is very bright these days, and the sea water temperature may rise rapidly.

But what made him very desperate was that the sea water on them was the clearest and the lightest pollution, but why did the red tide happen first here?
Chapter completed!