DOI

10.24411/1728-323X-2018-15045

Section

Ecology

Title

BIOINDICATIVE ASPECT OF ACER NEGUNDO L. LEAF VARIABILITY UNDER THE POLLUTION OF URBAN SOILS WITH HEAVY METALS

Сontributors

A.B. Savinov, PhD (Biology), Associate Professor, N.Novgorod State University, This email address is being protected from spambots. You need JavaScript enabled to view it., N. Novgorod, Russia;

Yu.D. Nikitin, Post-graduate student, N.Novgorod State University, This email address is being protected from spambots. You need JavaScript enabled to view it., N. Novgorod, Russia;

E.A. Erofeeva, PhD (Biology), Dr. Habil, Professor, N.Novgorod State University, This email address is being protected from spambots. You need JavaScript enabled to view it., N. Novgorod, Russia

Abstract

Variability of the leaf morphological features and phenofund (sets of phenes, i.e. various varieties of leaf form) in maple Acer negundo L. clusters in four recreational zones of Nizhny Novgorod with varying degrees of soil contamination with heavy metals (HM) (lead, zinc, copper, chromium) were studied. The research  has shown that, according to the gradient of increasing the level of soil contamination with HM in the A. negundo groupings, firstly, there is a tendency to reduce the size of the leaves (the length of the leaf blade, petiole, the leaf width decreases); secondly, compared with the phenofund of the maple control group (from a biotope with the lowest total toxic load on the soil), the frequency of occurrence of 6 phenes increases in the phenofund of three other biotopes, but the frequency of other 11 phenes decreases. As a result, with increasing soil contamination by HM, the average number of phenes in maple decreases and the proportion of rare phenes increases. The dependence of the changes in these indicators on the total toxic load on the soil can be used for bioindication and biomonitoring of the ecosystem state, even more so, since the maple is common in urban ecosystems and expands into the biocenoses of the adjacent natural territories.

Keywords

Acer negundo L., phenes of leaves, heavy metals, soil, urban ecosystems, bioindication.

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