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By Jelly | 13 January 2020 | 0 Comments

Physiological Injury and Bio-mechanical Injury of Aquatic Plants

Physiological Injury of Aquatic Plants

1. Insufficient Light
During the growth, due to insufficient light, the photosynthetic intensity of aquatic plants will be reduced, the normal growth and development will also be affected.

For example, red water plants such as Ammania gracilis and Rotala macranda, due to insufficient light, the anthocyanins in the leaves will decrease; while chlorophyll will increase, and then gradually become green. In the case of insufficient light, it also shows yellowing, plant slim and fragile, and abnormal growth.

If it is placed under sufficient light, the water plants will slowly return to normal, and the leaf color will turn green, the red water plants will become bright red and dazzling. Therefore, it is necessary to strengthen the light to avoid light lack that affects the normal growth of plants.

2. Water Temperature (Too High or Too Low)
When the water temperature of the fish tank is too high, the leaves or young parts of the aquatic plants will be damaged, and the phenomenon of fallen leaves or yellowing will occur. Finally, the leaves will easily rot and dissolve.

When the temperature is too low, it will affect the growth and development of most tropical or subtropical aquatic plants. For example, the metabolic function of the plant reduced, and the growth is stagnated. Sometimes necrosis, rotten roots and other symptoms will also occur in the whole plant or part of it.
Here we suggest that better use a  thermometer  to keep daily accurate data.

3. Phyto Dehydration
Dehydration of aquatic plants is a physiological phenomenon (burning branches), which is mainly caused by excessive fertilization.

Since the total ion concentration in the water is higher than that in the aquatic plants, osmosis occurs, leading to the phenomenon of shrinkage. When it is slight, the leaf shape becomes small, and the young leaves do not curl or stretch; if severe, the whole plant leaves will fall off, and gradually rot, finally die.


Biomechanical Injury of Aquatic Plants

1. Snail Animals Injury
Mollusks such as snails are the helper to remove algae from the water tank, but sometimes they also endanger aquatic plants to supplement food sources.

Injured aquatic plants, leaves, and stems are incomplete, which will often affect the ornamental effect. In addition, the injured area is also susceptible to bacterial infection. The only solution is to remove the snails quickly.
2. Fish Damage
Some species of tropical fish use waterweed as a source of food in their place of origin. Nowadays it is raised as an ornamental fish, although it is fed with artificial feed, it still cannot change the habit of eating water grass.

Therefore, avoid raising herbivorous fishes such as tinfoil barb and Eyespot pufferfish in the water tank. Some fish, such as the Clown Loach, do not eat water plants, but they have the habit of digging holes, so they also hurt the roots of aquatic plants.

You may also want to read:
How to Keep the Amazon Sword?
Java Moss, One of the Easiest Aquatic Plant
What is the Green Algae Ball and How to Keep It?

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