Science and Education in Karakalpakstan issn 2181-9203 Science Magazine chief editor

Science and Education in Karakalpakstan. 2023 №2/1 ISSN 2181-9203 
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species composition of the ecosystem is represented by only 2 types of aquatic plants. It is covered 
with reeds and its growth is high, and the coastal zone is also thickly covered with urut. The 
dominants of the coastal part are halophytes - plants such as sedge and sedge (Matjanova, Oryol, 
2019). 
 
Table 3.2. 
General characteristics of the current state of the Arolboi lakes 
№ 
Names of 
lakes 
Field, ga 
Depth, m 
Food 
source 
A lot of 
water 
average 
Low 
water 
A lot of 
water 
average 
Low 
water 
1 
Mejdureche 
49600 
16000 
110 
2,10 
1,80 
0,5 
River 
2 
Jyltyrbas 
28500 
13500 
4000 
3,2 
1,6 
0,9 
River 
3 
Davutkol 
17000 
1380 
920 
7,0 
6,8 
- 
A mix 
In general, it can be noted that the hydrochemical and hydrobiological condition of water is 
deteriorating in Jyltyrbas and a number of small lakes fed by collector-drainage waters, their 
mineralization is increasing, and accordingly, these lakes are losing their importance for the 
national economy. Every year, the area of reed fields is expanding and they are turning into saline 
depressions. The future development of the ecological situation of the Aralboi delta water bodies 
depends on the amount of fresh water supply from Amudarya. 
Depending on the volume of water supply, changes in the morphometric parameters of the 
studied lakes occur at one or another level. For example, when looking at the dynamics of the total 
area of the studied lakes in the period from 2013 to 2019, it is possible to observe the cyclical 
characteristics of the filling and silting of the lakes.
It was found that changes in environmental conditions can affect the proportions of BE 
fractions in water bodies. External flows (inflow and outflow, exchange between water and ash 
bottom) are important in forming the annual balance of BE, and internal flows are important in 
forming the balance of phosphorus and nitrogen in living components of ecosystems. The 
distribution of biogenic elements in water bodies does not differ in the stability of correlation 
relations, where even stochastic relationships between variables are observed.