scholarly journals Water Retention Problem in the Mountain Areas: a Case of Sola River Flows, Polish Carpathians

2019 ◽  
Vol 20 (11) ◽  
pp. 167-177 ◽  
Author(s):  
Andrzej Jaguś
2021 ◽  
Vol 9 (12) ◽  
pp. 632-642
Author(s):  
Taofic Bacharou ◽  
◽  
Vincent Prodjinonto ◽  
Come Agossa Linsoussi ◽  
◽  
...  

The variation and non-control of the overflow of the Mono River adversely affects the performance of the Nangbetohydropower plant to the point thatitcan no longermeet the increasinglyincreaseddemand for electricity. This studypresents the development of an operational model for forecastingdaily river flows for the plants water retention. The overflow of the Mono River at the upstreamhydroelectric dam from 1991 to 2019 wasanalyzed and modeled by the deterministicprocesswith R software in order to makepredictions. First, the flow serieswasanalyzed by the ARIMA model (18, 1, 2) then by a multiplicative model afterremoving the seasonal trends fromtheseseries by the movingaveragemethod. The calculatederror of the results of said model revealsthat the deterministic model integrates the input generationprocesseswith an error of the order of . Finally, an annual flow forecasting program has been developed as a planning tool for the operation of the dam, in order to meet production needs and to plan water releases.


Author(s):  
N. Kolecka ◽  
J. Kozak ◽  
D. Kaim ◽  
M. Dobosz ◽  
Ch. Ginzler ◽  
...  

Land abandonment and secondary forest succession have played a significant role in land cover changes and forest cover increase in mountain areas in Europe over the past several decades. Land abandonment can be easily observed in the field over small areas, but it is difficult to map over the large areas, e.g., with remote sensing, due to its subtle and spatially dispersed character. Our previous paper presented how the LiDAR (Light Detection and Ranging) and topographic data were used to detect secondary forest succession on abandoned land in one commune located in the Polish Carpathians by means of object-based image analysis (OBIA) and GIS (Kolecka et al., 2015). This paper proposes how the method can be applied to efficiently map secondary forest succession over the entire Polish Carpathians, incorporating spatial sampling strategy supported by various ancillary data. Here we discuss the methods of spatial sampling, its limitations and results in the context of future secondary forest succession modelling.


2014 ◽  
Vol 83 (1) ◽  
pp. 71-77 ◽  
Author(s):  
Michał Ciach ◽  
Jakub Michalcewicz

Abstract The Rosalia longicorn Rosalia alpina is regarded as a primeval forest relict and occurs mainly in old beech woodland in mountain areas. This paper describes a locality of the species in a copse surrounded by pastures, lying in open farmland situated at some distance from woodlands. The larval host plant was Wych Elm Ulmus glabra. The trees at this locality were dying from Dutch elm disease, which is caused by the fungus Ophiostoma sp. It is demonstrated that under favourable circumstances R. alpina can also colonise copses in pastureland, a hitherto unknown habitat for this species. At the same time this newly discovered locality may signify a change in the species’ habitat preferences. R. alpina is under threat, however, from the possible felling of the dead trees by the landowner; conservation measures should therefore include a mechanism for financial compensation in return for not cutting the trees down. This work has shown that copses may be used by endangered saproxylic species. The discovery of a R. alpina locality in a pastureland copse gives an indication of the importance of pockets of unmanaged habitat in the farming landscape, which could be contributing to the preservation of populations of rare species.


Author(s):  
N. Kolecka ◽  
J. Kozak ◽  
D. Kaim ◽  
M. Dobosz ◽  
Ch. Ginzler ◽  
...  

Land abandonment and secondary forest succession have played a significant role in land cover changes and forest cover increase in mountain areas in Europe over the past several decades. Land abandonment can be easily observed in the field over small areas, but it is difficult to map over the large areas, e.g., with remote sensing, due to its subtle and spatially dispersed character. Our previous paper presented how the LiDAR (Light Detection and Ranging) and topographic data were used to detect secondary forest succession on abandoned land in one commune located in the Polish Carpathians by means of object-based image analysis (OBIA) and GIS (Kolecka et al., 2015). This paper proposes how the method can be applied to efficiently map secondary forest succession over the entire Polish Carpathians, incorporating spatial sampling strategy supported by various ancillary data. Here we discuss the methods of spatial sampling, its limitations and results in the context of future secondary forest succession modelling.


Land ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 8 ◽  
Author(s):  
Dominik Kaim ◽  
Elżbieta Ziółkowska ◽  
Marcin Szwagrzyk ◽  
Bronwyn Price ◽  
Jacek Kozak

The Polish Carpathians, like many mountain areas in Europe, are currently facing dynamic land use changes that will shape their future landscapes. As there are many different possible scenarios of potential change, we compared three different land use scenarios up until the year 2060 and assessed their impact on the potential habitat connectivity of two large carnivores—wolf (Canis lupus) and lynx (Lynx lynx). We first analysed the main directions of change within and outside the pan-European wildlife corridor located in the western part of the Polish Carpathians. Then we calculated and compared least-cost paths among randomly selected points for each land use scenario separately. Our results showed that the main direction of change—forest cover increase—may positively influence habitat connectivity for both wolf and lynx. However, due to the future spread of settlements, this positive impact might be locally limited. Therefore, to realise the potential conservation opportunities resulting from on-going land use changes, adequate orientation of spatial planning towards habitat connectivity is crucial.


2001 ◽  
Vol 21 (2) ◽  
pp. 157-172 ◽  
Author(s):  
Robert W. Schrier ◽  
Andrey K. Gurevich ◽  
Melissa A. Cadnapaphornchai

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