Death of Fish Due to Shallowing. Total Destruction of Biodiversity.
Summer 2021 was dry for all of Kyrgyzstan. However, the consequences of the water shortage are most acutely felt in the Chui region. Currently, the entire territory of the Chui Valley can be regarded, in one way or another, as a zone of ecological disaster and ecocide.
According to specialists, the "Spartak" reservoir once had the largest variety of fish species in the Chui region and in Kyrgyzstan in general during "good times." A total of 25 species were found here, including pike, crucian carp, roach, marinka, perch, snakehead, silver carp, carp, osman, trout, eleotrid, and catfish. The largest among them is the catfish, with one specimen caught in the reservoir weighing up to 90 kg. The smallest is the tiny eleotrid, with adult individuals barely reaching 5 centimeters. Now, to varying degrees, the death of fish has affected almost the entire species composition.
The same situation is observed at the third Ala-Archa reservoir, where the water has also been drained to zero, resulting in a massive amount of dead fish lying and decomposing. Videos of the incident were published on social media. Local fishermen witnessed thousands of fish floating to the surface. "A few days ago, I arrived early in the morning and saw a terrible sight," one of them recounted. "The entire surface of the lake was covered with dead fish floating." Instead of a large body of water, there remains a small river filled with hundreds of kilograms of dead fish.
The death of fish in the water bodies of the Chui Valley is not only due to the draining of water. Fish in the canals are dying from extreme heat, lack of wind, and insufficient oxygen in the water. This is also related to the expansion of lower microflora—inedible vegetation for fish that absorbs the oxygen belonging to the fish. The water in the canals warms up to over 26 degrees Celsius, while the norm is 21 degrees, leading to active algal blooms. During the day, they produce oxygen through photosynthesis, but at night, they consume it, causing a daily oxygen deficit.
The situation is complicated not only by the lack of meltwater from glaciers but also by significant losses that have become particularly noticeable in the context of the existing deficit. The use of water for irrigation negatively affects the fauna of rivers: small rivers in the agricultural zone of the Chui Valley are practically completely devoid of water during the summer. As a result of the regulation of large canal flows and mass water discharges from reservoirs, the floodplains are degrading, swamps are drying up, and thickets of tugai are disappearing, leading to the total destruction and death of all biodiversity in rivers and water bodies. Fish are dying by the ton, amphibians are disappearing, and migratory birds are leaving their nests.
Moreover, reservoirs and floodplain areas traditionally serve as places for rest and feeding for many waterfowl during their migration and wintering periods. No specialist can quantify the colossal damage to nature. Monitoring of waterfowl populations at reservoirs is practically non-existent.
According to data, only 15-20% of river runoff in Kyrgyzstan is used for domestic water consumption, while the remaining 80-85% flows into the territories of Central Asian countries. Open sources also indicate that Kyrgyzstan has experienced the highest temperature increase of 1.6 °C compared to Central Asian countries. The forecast for temperature increase by 2100 is 4.4 °C. This will accelerate the melting and evaporation of mountain glaciers due to the cumulative impact of the climate system: temperature, atmospheric pressure, humidity, evaporation, greenhouse effect, wind patterns, pollution, and evapotranspiration.
According to specialists, water scarcity is a seasonal and cyclical phenomenon. If the government does not draw conclusions from what is happening today, it will inevitably face the problem again in the future, the social consequences of which are difficult to overestimate. Soil drought, dust storms, soil erosion and degradation, reduced yields, and loss of biodiversity will follow. Then we can expect fierce competition for resources, conflicts, migration, and environmental refugees...
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