Систематична, екобіоморфологічна структура та созологічна цінність флори водних і прибережно-водних екосистем річки Золотинка (Чернігівська область)

Abstract

Наведено результати вивчення видового складу вищих водних і прибережно-водних рослин річки Золотинка в межах Чернігівської області. На обстежених ділянках річки встановлено зростання 42 видів із 33 родів та 24 родин рослин.

The results of the study of the species composition of higher aquatic and coastal-aquatic plants of the olotynka River within the Chernihiv region are presented. The surveyed parts of the river revealed an increase in 42 species from 33 genus and 24 families. Small rivers serve as water storage for big rivers, they are of high ecological status which calls for improvement. One indicator of the status of small rivers is higher water and coastal-water plants, which react first to changes in the quality of the water body. By their species composition, projective cover, indicative properties and other characteristics it is possible to assess the ecological status of the river. The study was conducted in the course of 2017–2019. The material was collected during expeditionary studies of the valley of Zolotynka river (Chernihiv district, Chernihiv region). Zolotynka river belongs to Desna river basin and is its left tributary of the first order, its length is 13 km, the slope is 0.23 m/km, the area of the basin is 31.8 km². The river originates in the west of the village of Ivanivka, Chernihiv district of Chernihiv region. It flows southwest through the village of Zolotynka and joins Desna river. According to the results of expeditionary field research into the flora of Zolotynka river there are 42 species of higher water and coastal-water plants belonging to 33 genus, 24 families, 3 classes (Equisetopsida, Liliopsida and Magnoliopsida) and 2 divisions (Equisetophyta and Magnoliophyta). According to the classification of V.H. Papchenkova higher water and coastal- water flora of Zolotynka river belongs to 5 ecotypes, the largest of which is represented by a group of coastal- water plants – 27 species belonging to two ecotypes - gelophytes, or air-aquatic plants - 6 species and hygrogelophytes - 21 species. Analysis of the areological structure showed that species with a wide range of distribution make up almost 85%, according to the structure of life forms perennial herbaceous plants make up 90%, according to K. Raunkier’s classification hemicryptophytes predominate. According to the research findings there are 2 species that are subject to regional protection in Chernihiv region and a species recorded in the Red Data Book of Ukraine.