Mowing of aquatic vegetation 

Vegetation in the vicinity of water bodies affects light conditions by shading, reduces the supply of soil particles to the water environment by wind action, protects banks and drains nutrients.  In the case of water bodies with no or minimal water flow, they are an excellent habitat for reed vegetation. The development of reed vegetation on the water surface is mainly conditioned by the height of the water column. The available substrate and the speed of the water flow. The presence of algae in the water surface is mainly supported by the supply of nutrients from the external environment, incident light and water temperature. If the water is eutrophic, a water flower cyanobacteria usually appears on the water surface.  A very common situation of excessive growth of aquatic vegetation occurs near intensively farmed land, especially in or around cornfields and intensively fertilized lawns. Substances that are distributed for the purpose of fertilizing the soil are directly floated into the lake during rainfall, or they reach the subsurface water, from where they subsequently (also through a well) reach the lake.  In the event that an excessive amount of nutrients does not reach the lake, mowing it with subsequent collection from the water environment may be sufficient for the long-term removal of unwanted vegetation. Such special maintenance of the water surface can be carried out once or occasionally at longer intervals. If, however, a constant supply of nutrients is secured in the lake in combination with light and shallow water, it is necessary to plan regular mowing and harvesting.  The post Mowing of aquatic vegetation  appeared first on Progroupe.

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The natural environment of watercourses

Vegetation growing along watercourses plays a major role in the country. It is a habitat that provides animals with food, safe shelter, and for many species with breeding potential. In addition to these functions by connecting several different natural ha

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Natural water environment: Sediments in the hydrographic system II.

Human activity has a significant impact on the water environment and sediment dynamics. Direct human interference is mainly the mining of gravel and sand, either for the purpose of obtaining building materials or for the purpose of deepening the river-bas

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Cyanobacteria

Cyanobacteria also known as cyanophyta are a group of bacteria capable of producing oxygen throughout photosynthesis similar to other plants. Often, they occur in an aquatic environment but in the soil as well. Increased occurrence of cyanobacteria is rec

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Natural water environment: Sediments in the hydrographic system I.

We define sediments as solid mineral materials such as gravel, sand and also as particles of biological material the remains of fallen leaves. The dynamics of sediments consists of three processes: creation, or entry of sediments into the environment, mo

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Project in Dolná Seč

In April 2021 a owner of a private pond with the surface area of 360 m2 in Dolná Seč municipality (Levice district) called us for a rescue. The owner battled overgrowing common reed time and again in his pond. Common reed (Phragmites australis) grows 4 me

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