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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Mechanikos inžinerija / Mechanical Engineering (T009)
Author(s): Lamsodis, Romanas;Morkūnas, Vytautas;Poškus, Vaclovas;Povilaitis, Arvydas
Title: Ecological approach to management of open drains
Is part of: Irrigation and drainage. , Vol. 55, Iss. 3 (2006)
Extent: p. 479-490
Date: 2006
Abstract: Most natural streams were made into drains when they were converted into recipients of subsurface tile systems. During the process the variety of biotic and abiotic conditions within and around the streams was totally destroyed, and the new watercourses (open drain recipients) were deprived of the greater part of the ecological importance that the former streams had possessed in the landscape. The data collected over the last decade in Lithuania about drain bed deformations, sediment accumulation, vegetation cover successions, intentional afforestation of slopes, beaver expansion and succeeding water quality changes, revealed some self-perpetuating natural alterations which raise the ecological significance of open drains as refuges and corridors in the landscape for vegetation (the succession of herbage and appearance of woody vegetation on slopes), and the barriers protecting surface runoff from diffuse agricultural pollution (beaver impoundments). On the other hand, these alterations are useful in terms of maintenance of the functioning of those drains as recipients because they result in steadier (roughly parabola-shaped) cross-section profiles, less threat of bed silting up and no need for the mowing of slopes (because of the growth of woody vegetation). This paper presents and discusses the study results highlighting the above-mentioned bidirectional effect of self-renaturalization, and considers the preconditions and possible methods of introduction for the ecologically acceptable management of open drains
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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