This study aims to present some ecological aspects regarding these lakes, and, as case study, we chose the lake formed in the remaining gap of Urdari open-pit (within the Rovinari Mining Basin). Artificial lakes, resulting either from damming watercourses or by flooding of gaps resulting from excavations are often found all over the world.
Formation of so-called open-pit lakes has become an
increasingly common practice in Romania (more precisely in the Oltenia Mining
Basin, where the lignite deposit contained in Dacian and Romanian formations
was and is extracted through open-pits). The flooding process of the remaining
gaps is in general a natural one, as water comes from underground sources
(phreatic and pressurized aquifers) and from precipitations (including runoff
waters from the surrounding terrains). This practice is considered to be a type
of ecological reconstruction of former exploitation areas and has been applied
worldwide for quite a time (in Germany, Poland, Czech Republic, Spain, USA,
Australia, etc.). The modifications of the physical and chemical properties of
the biotope are the consequence of the activity of the biocenoses. There is an
interdependence between the biotope and the biocenosis, the interrelationships
are close and the influences are mutual. However, the authors consider that
given the multitude of similar conditions (bioclimate, geology, topography,
etc.) in which they form, the preliminary conclusions of this study can be
extrapolated for other lakes in the area (existing, such South Pesteana and
Moi, or planned, such as Rosia and North Pesteana). This study presents data on
the existing biotope and biocenoses (restricted to species identification),
without going into specific details about populations, ecosystem production, energy
and matter flows within it, as these investigations demand a longer period of
time and more resources and are foreseen for a future development stage of this
study. We recommend continuous monitoring of the vegetation in the studied
area, in order to complete the inventory with phytocoenoses whose emergence is
related to natural multi-annual dynamics as well as human interventions.
Author(s) Details:
Florin Faur,
Department
of Environmental Engineering and Geology, University of Petrosani, University Street,
No. 20, 332006, Petrosani, Romania.
Izabela-Maria
Apostu,
Department
of Environmental Engineering and Geology, University of Petrosani, University
Street, No. 20, 332006, Petrosani, Romania.
Maria Lazar,
Department of Environmental Engineering and Geology, University of
Petrosani, University Street, No. 20, 332006, Petrosani, Romania.
Please see the link here: https://stm.bookpi.org/EIEGES-V6/article/view/13063
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