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Monday, 14 August 2023

Killing fish through ignorance and lack of insight



Excessive aquatic weed control by thoughtless humans can lead to extensive fish death in small ponds and lakes.

Random weed control treatment of the whole waterway, all at once, marks a fool’s errand, It may kill many fish and cost the reckless culprit a fortune in more ways than one.

Mystery fish deaths can create a great deal of misunderstanding and careless weed control in inexperienced hands has much to answer for. Of course, it’s all too easy to blame the herbicide itself for fish mortality rates yet the situation is often more complicated than that.

Subsequent to ill – considered weed treatments dying weeds start to decay. The degradation progression uses oxygen in the water.

This is a highly significant point that needs reiterating. weed decomposition uses up oxygen in the water, which frequently makes it impossible for fish and other aquatic life to survive. This often leads to the death of fish and many other types of aquatic life.

Oxygen depletion can make certain (if not all) areas of the lake barren of life and thus uninhabitable for the foreseeable future.

When oxygen levels are low in warm weather or/and the pond has been hastily over populated, fish may have trouble breathing and become visibly stressed and eventually lethargic. This also leaves them open to harmful diseases and parasitic inroads. Cooler bright conditions help to foster a healthy balance that's beneficial to aquatic plants, single-celled algae, and most importantly maintain oxygen levels in ponds. Hot days encourage less oxygen than cool water does.

Hammering over-populated lakes, etc. with too much weed control thereby sees less oxygen available. Fish, being cold-blooded animals experience an increase in their metabolic rate when the water warms up. This increases their need for essential oxygen at a time when less may be accessible. 

Dull conditions slow down photosynthesis, making even less oxygen available to the fish.

Heavily stocked waters will see fish can run into oxygen debt much sooner. Hot weather can bring about less oxygen even in moderately stocked ponds. Moreover, the unstable ecological balance can further decline, via oxygen depletion from decaying aquatic vegetation. This will see fish deaths increasing quite rapidly to the dismay of the lake's bewildered owner.

Aquatic vegetation falls into numerous categories, but the following are of special interest to this article. Algae that are submerged plants; floating plants, and emerged plants that root in the bottom of the lake, and those that grow above the water. Habitually, aquatic plants are beneficial. They help filter nutrients from the water and reveal that the lake is healthy and amicable to fish life.

In conclusion.

Fish will die in large numbers when excessive weed control creates too much oxygen depletion, via decaying weeds, in the waters. 

This lethal depletion is made far worse by hot weather conditions.

Ponds completely cleared of natural weed growth may look ever so pretty and please thoughtless anglers and boat users, yet the price of messing with the fragile natural balance will be measured in sick fish gasping for breath on the surface and dead ones polluting the shoreline.

Wise fish husbandry is not a game for amateurs, it is a critical undertaking for a lake’s survival!



https://dryflyfisher.yolasite.com/ 







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