Monitoring investigations of the flora of the course of the Turia river in the city of Kovel on Sagaidachnoyo street

Abstract

In 2021, the project of reconstruction of the Turia riverbed in the area of Sahaidachnoy Street in the city of Kovel, Volyn Region, in the area of the bridge crossing, was launched. In order to timely identify, prevent and eliminate the negative consequences of the impact of planned activities on the phytodiversity of the Turia River, post-project monitoring was carried out every quarter, which allowed to objectively assess the impact of the performed works on the plant cover. Studies have shown the recovery of typical aquatic and coastal aquatic vegetation in the area of activity. Among aquatic plants Nuphar lutea (L.) Smith., Myriophyllum spicatum L., Potamogeton crispus L., Lemna minor L. Species Salvinia natans(L.) All are typical. recovered on the territory of the planned activity in shallow backwaters near the banks of the river with a projective coverage of 20-40%. Above and below the research site, the species shows high phytocenotic activity with a projective cover of 40-100%. Of the coastal water plants, typical are Butomus umbellatus L., Lycopus europaeus L., Glyceria maxima (C.Hartm.) Holmb, Lythrum salicaria L., Typha latifolia L., Rumexhydrolapathum Huds., Ranunculus sceleratus L., Myosotis scorpioides L, Mentha aquatica L., Bidens frondosa L., Iris pseudacorus L. The groups of Salvinieta natantis formation, Salvinietum natantis purum and Salvinietum (natantis) lemnosum (minoris) associations included in the Green Book of Ukraine were revealed; Nuphareta luteae formation group Nupharetum (luteae) salviniosum (natantis) association. The work carried out on the improvement of the banks of the Turia River had a positive effect on the spread of weeds, a lawn was created, and highly decorative cultivars of maple and willow were planted as solitaires.

The study of the territory of the Turia River above and below the planned activity proved the dominance of ruderal biotopes of perennial grasses with the dominance of anthropophytes, among which there are species with high phytocenotic activity. Their presence may have threatening consequences for the existence of the already reconstructed part of the Turia River bed. Among them, species dangerous to human health: Heracleum sosnowski Manden. and Ambrosia artemisiifolia L.