Wszystkie pola: basin - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Water resource modelling for the Lake Tana sub-basin using the Mike Basin model for current and future water resource development scenarios
Autorzy:: Mulat, Asegdew G.
Powiązania:: https://bibliotekanauki.pl/articles/1844353.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: development scenarios
Lake Tana sub-basin
Mike Basin model
modelling
reservoir operation
water resource
Opis:: Rainfall in the Lake Tana basin is highly seasonal and the base flow contribution is also low resulting in the need for reservoirs to meet the agricultural demand during the dry season. Water demand competition is increasing because of intense agricultural production. The objective of this study is to develop water balance models. The Mike Basin model has been selected for water allocation modelling and identifying potential changes needed to the existing water allocation scheme to reduce the stress due to increased water demand. The study considers baseline and future development scenarios. The construction of new dams results in two competing effects with respect to evaporation loss. The first effect is increased evaporation from new reservoirs, while the other is reduced evaporation from the Lake Tana as a result of a decreased surface area of the lake and reduced inflow of water to the lake. Once a dam is built, there will be an additional free water surface area and more evaporation loss. In dry months from January to May, the irrigation water demand deficit is up to 16 Mm3. It is caused by reservoirs built in the basin, which reduce the inflow to the Lake Tana. The inflow varies between wet and dry months, and there is more water flow in wet months (July, August and September) and reduced flow in dry months because of the regulatory effects produced by the reservoirs.
Źródło:: Journal of Water and Land Development; 2021, 48; 215-224
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The need for proper management leading to the sustainability of the Kelani River and its lower basin
Autorzy:: Manage, Pathmalal
Mahagamage, Yohan L.
Ajward, Roshan
Amaratunge, Sampath
Amarathunga, Visitha I.
Powiązania:: https://bibliotekanauki.pl/articles/1844419.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: Kelani River basin
lower river basin
pollution sources
proper management
strategic plan
sustainability
Opis:: The Kelani River is the second largest watershed in Sri Lanka and the main water-supply intake point for the Greater Colombo. The present study focuses to identify the sources of pollutants of the meandering zone of the Kelani River, particularly due to the absence of more recent information. Accordingly, a survey was conducted to obtain information on industrial discharges, anthropological, and social activities within the area of 15 m from left and right banks of the river. The high contaminations (total and faecal coliform – 1100 MPN∙(100 cm3)–1; COD – 10 mg∙dm–3; BOD – 4 mg∙dm–3) of surface and groundwater are corroborated with the results obtained via the demographic and land usage statistics. Industrial pollutant sources and harmful anthropological practices were identified as major threats to the river basin. In this survey, agriculture and land degradation were identified as issues due to improper land use management. As policy recommendations based on the results of the study, it was identified that the awareness for Kelani River protection should be increased; monitoring and evaluation of the Kelani River basin under a management plan should be implemented; and stakeholder and private partnerships contribution to the sustainability of the Kelani River basin should be established.
Źródło:: Journal of Water and Land Development; 2020, 47; 10-15
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Hydrographic characteristic of ponds distribution in Ukraine – Basin and regional features
Autorzy:: Khilchevskyi, Valentyn
Grebin, Vasyl
Zabokrytska, Myroslava
Zhovnir, Viktoria
Bolbot, Hanna
Plichko, Liudmyla
Powiązania:: https://bibliotekanauki.pl/articles/293352.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: pond
river basin district
river regulation
Ukraine
Opis:: The purpose of the research is to establish the total number of ponds in Ukraine and to analyse the territorial distribution in the administrative areas, as well as in the river basin districts, as the main hydrographic units of water management. Cadastral data of the State Agency of Water Resources of Ukraine regional offices as of 2019 was used in the research (as to Crimea, Donetsk and Luhansk regions we applied the data as of 2014). According the researches there are 50,793 ponds in Ukraine with a total water table area of 2,92899 ha and the volume of 3,969.4 mln m³ of water in 2019. The quantitative distribution of ponds across Ukraine is unequal. Most of them are concentrated in the central part of the country (10.5% of the total number of ponds in the country are in Vinnytsia region). Least of them are in Luhansk region (0.7%). Almost half of the ponds are located in the Dnieper River Basin (48.5%). The lowest quantity of ponds is in the Black Sea Basin (1.2%). The regulation of river basins districts (the rivers of the Sea of Azov, Crimea and Black Sea Basins) reaches 0.71–0.77. As of 2019, 28% of the ponds are rented out. In order to identify the real status of the ponds (both quantitative and qualitative), their recreational role, the environmental impact and the regulation of the hydrographic network in Ukraine, it is necessary to increase the attention to ponds monitoring.
Źródło:: Journal of Water and Land Development; 2020, 46; 140-145
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: A comparative assessment of meteorological drought in the Tafna basin, Northwestern Algeria
Autorzy:: Bougara, Hanane
Baba-Hamed, Kamila
Borgemeister, Christian
Tischbein, Bernhard
Kumar, Navneet
Powiązania:: https://bibliotekanauki.pl/articles/2048629.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: drought
meteorological drought indices
Tafna basin
trend analysis
Opis:: The drought ranked first in terms the natural hazard characteristics and impacts followed by tropical cyclones, regional floods, earthquakes, and volcanoes. Drought monitoring is an important aspect of drought risk management and the assessment of drought is usually done through using various drought indices. The western region in Algeria is the most affected by the drought since the middle of the 70s.The current research focuses on the analysis and comparison of four meteorological drought indices (standardized precipitation index – SPI, percent of normal index – PN, decile index – DI, and rainfall anomaly index – RAI) in the Tafna basin for different time scales (annual, seasonal, and monthly) during 1979–2011. The results showed that the SPI and DI have similar frequencies for dry and wet categories. The RAI and PN were able to detect more drought categories. Meanwhile, all indices have strong positive correlations between each other, especially with Spearman correlation tests (0.99; 1.0), the meteorological drought indices almost showed consistent and similar results in the study area. It was determined in 1982 as the driest year and 2008 as the wettest year in the period of the study. The analysis of the trend was based on the test of Mann–Kendall (MK), a positive trend of the indices were detected on a monthly scale, this increasing of indices trend represent the increasing of the wet categories which explains the increasing trend of the rainfall in the last 2000s. These results overview of the understanding of drought trends in the region is crucial for making strategies and assist in decision making for water resources management and reducing vulnerability to drought.
Źródło:: Journal of Water and Land Development; 2021, 51; 78-93
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Identification and evolution of the Turonian aquifer case study: Cretaceous basin of Béchar, southwestern Algeria
Autorzy:: Sadat, Sonia
Mansour, Hamidi
Mekkaoui, Abderrahmane
Merzougui, Touhami
Powiązania:: https://bibliotekanauki.pl/articles/292277.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: Cretaceous basin
quantitative evolution
hydrodynamics
piezometers
Turonian aquifer
Opis:: Faced with the challenges of sustainable groundwater resource management in the arid zone, the identification of reserves and their monitoring have become vital. This paper aims to identify the Turonian aquifer in the Cretaceous Béchar basin, and calculate its transmissivity, permeability and storage coefficient, as well as its evolution over time. This Turonian aquifer is characterized by marine limestones (gentle dip shelters 45° to the North and 5° to 10° to the South). Pumping tests revealed a transmissivity T of 10^–4 to 10^–2 m²·s^–1, a permeability K of 10^–6 to 10^–4 m·s^–1 and a storage coefficient S of approximately 10^–3. Two piezometric campaigns, carried out between (1976–2018), show a converging and constant flow direction from the North–East to the South–West and from the North–West to the South–East towards the outlet of the basin. Decreased values were observed in the North and South–West borders due to isopiezometric lines. However, this water table is not in a stationary state, it shows seasonal and interannual fluctuations in relation to the variable rainfall and the exploitation rate. In terms of facies, the projection of the two hydrochemical campaigns, during 1976 and 2018 on the Piper diagram, did not show any significant evolution, they are concentrated in the chlorinated and sulphated calcium and magnesium facies.
Źródło:: Journal of Water and Land Development; 2020, 46; 190-199
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Suitability of surface water for irrigation in the Maffragh basin, North-East of Algeria
Autorzy:: Boubguira, Selwa
Zouini, Derradji
Lamine, Sayad
Dali, Nawel
Powiązania:: https://bibliotekanauki.pl/articles/1844368.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: irrigation
Maffragh basin
northeastern Algeria
rain-fed agriculture
surface water
Opis:: Water quality is an environmental priority for irrigation in rainfed agriculture. Recently, water quality has been affected by the uncontrolled disposal of wastewater, the use of chemical fertilizers in agriculture and, most significantly, by the excessive exploitation of water resources during the low season. The basin of the Maffragh in the Algerian north-east real is fed by two main rivers: Wadi El Kebir East and Bounnamoussa. From its source, the stream is continually contaminated with domestic and agricultural discharges through the tributaries causing a significant deterioration in water quality. In order to know the current state of water quality in the Maffragh basin and to determine its suitability for irrigation without any prior treatment, research has been conducted in the two streams at representative sampling points in catchment areas used for irrigating crops. To assess the quality of water and detectable compounds monitoring, laboratory methods are used. The various volumetric and colorimetric assays were carried out according to Jean Rodier. Organic parameters such as nitrites, ammonium and phosphates, were measured using a UV/VIS 6705 JENWAY spectrophotometer, at wavelengths of 543 nm, 630 nm and 880 nm respectively for nitrites, ammonium and phosphates. The BOD5 and COD parameter was measured using a DIN EN 1899-1-H51 spectrophotometer and DIN ISO15705: 2002 spectrophotometer. The performed analyses on conductivity shows oscillating values ranging between 425 and 495 μS∙cm–1 for January 2018, while for the low water level of July 2018 the conductivity varies between 433 and 796 μS∙cm–1; this parameter is determinant for water quality assessment and its use for irrigation. Beside the conductivity test, the Riverside–Wilcox diagram was applied, to combine conductivity and sodium absorption rate (SAR). The obtained results of the two seasons show satisfactory results in the applicability of the water to irrigate in the basin.
Źródło:: Journal of Water and Land Development; 2021, 48; 94-98
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Application of MIKE SHE software for estimation of groundwater recharge in Ogun and Oshun basins, southwestern Nigeria
Autorzy:: Oke, Muritala O.
Powiązania:: https://bibliotekanauki.pl/articles/946899.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: groundwater recharge
hydrological parameters
meteorological parameters
MIKE SHE model
Ogun basin
Oshun basin
Opis:: MIKE SHE software was used to estimate recharge into the aquifers of Ogun and Oshun Basins. Abeokuta within the Ogun Basin and Oshogbo in the Oshun Basin are sub-divided vertically into two components: atmosphere, and unsaturated zone. The atmosphere zone comprises of rainfall and potential evapotranspiration, while the unsaturated zones, comprises of the Basement Complex and Sedimentary rock. Daily records from two rainfall stations, Oshogbo station (2008–2011) and Abeokuta station (2010–2014) water years were obtained for simulation of groundwater recharge processes using MIKE SHE model. The simulation results showed that daily groundwater recharge is influenced by rainfall and ranges from 0 mm∙day^–1 in January when there was an insufficient rainfall in the two stations to 10.89 mm∙day^–1 in Abeokuta and 29.85 mm∙day^–1 in Oshogbo in the month of August when the soils had attained field capacity. The study found out that there are more daily groundwater recharge in Oshun basin compared to that of Ogun basin. This was alluded to more rain-fall and less evapotranspiration recorded at Oshun basin as compared to Ogun basin coupled with the sedimentary soil which allows more movement of water into the aquifer of the basin. It is recommended MIKE SHE model should be used to estimate recharge in other basins in Nigeria and Africa for quick and effective daily recharge calculations to permit better and scientific decision making in these areas.
Źródło:: Journal of Water and Land Development; 2020, 45; 86-93
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Drought prediction in the Lepelle River basin, South Africa under general circulation model simulations
Autorzy:: Ikegwuoha, Darlington C.
Dinka, Megersa O.
Powiązania:: https://bibliotekanauki.pl/articles/946901.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: drought
high-resolution-climate-data
Lepelle-River-Basin
representative concentration pathways (RCPs)
weather evaluation and planning (WEAP)
Opis:: This study aims to evaluate changes in the frequency and severity of historical droughts (1980–2018) and then model future droughts occurrences (2019–2099) in the Lepelle River Basin (LRB), using Intergovernmental Panel on Climate Change (IPPC) General Circulation Model (GCM) simulations for two representative concentration pathways (RCP8.5 and RCP4.5). Firstly, the present-day and future hydrology of the LRB are modelled using the weather evaluation and planning (WEAP) model. Mann–Kendall tests are conducted to identify climate trends in the LRB. The reconnaissance drought index (RDI) and the streamflow drought index (SDI) are employed to explore hydro-meteorological droughts in the Lepelle River Basin, South Africa. The RDI and SDI are plotted over time to assess drought magnitude and duration. The simulated temporal evolution of RDI and SDI show a significant decrease in wetting periods and a concomitant increasing trend in the dry periods for both the lower and middle sections of the LRB under RCP4.5 as the 22^nd century is approached. Lastly, the Spearman and Pearson correlation matrix is used to determine the degrees of association between the RDI and SDI drought indices. A strong positive correlation of 0.836 is computed for the middle and lower sections of the LRB under the RCP8.5 forcing. Further findings indicate that severe to extreme drought above –2.0 magnitude are expected to hit the all three sections of the LRB between 2080 and 2090 under RCP8.5. In the short term, it is suggested that policy actions for drought be implemented to mitigate possible impacts on human and hydro-ecological systems in the LRB.
Źródło:: Journal of Water and Land Development; 2020, 45; 42-53
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: An integrated approach for landslide hazard assessment: A case study of the Middle Dnieper Basin, Ukraine
Autorzy:: Ivanik, Olena
Fonseca, Joana
Shabatura, Oleksandr
Khomenko, Ruslan
Hadiatska, Kateryna
Kravchenko, Dmytro
Powiązania:: https://bibliotekanauki.pl/articles/2073724.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: Dnieper River basin
electrical resistivity tomography
ERT
infrared thermography
IRT
landslide hazards
Opis:: Ukraine is characterised by active natural hazards processes within different structural, tectonic and landscape zones. In Middle Dnieper basin region mass movement processes have great impact on people’s livelihoods and infrastructure. These processes occur on the slopes with different geological structure. The determining causes include lithologic and stratigraphic conditions, hydrogeological regime, structural and textural peculiarities of rocks and the geomorphology of the slopes. Landslide inventory database has been developed based on long-term observations of more than 400 landslides and landslide-prone areas. This paper takes efforts forward by combining different geological and geophysical methods to advance the current understanding of landslide phenomena and contributing towards a better informed assessment of landslide hazard and risk. The developed methodology is implemented in a test sites of Kyiv region, covering an area of 18.3 km2 situated in the Middle Dnieper basin. Electrical Resistivity Tomography, Self-Potential and Infrared Thermography techniques were employed to investigate the lithostratigraphic sequences, the geometry of landslide body and potential mass movement. The results presented here confirm the potential of using an integrated approach that combines different field data to better plan mitigation activities and measures for the effective land management. This study will be useful in increasing the safety aspects of the infrastructures and lives and also for planning of research and developmental activities.
Źródło:: Journal of Water and Land Development; 2022, 52; 81--86
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: The assessment of artificial neural network rainfall-runoff models under different input meteorological parameters. Case study: Seybouse basin, Northeast Algeria
Autorzy:: Aoulmi, Yamina
Marouf, Nadir
Amireche, Mohamed
Powiązania:: https://bibliotekanauki.pl/articles/1844286.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: artificial neural networks
ANNs
meteorological parameters
rainfall-runoff
semi-arid region
Seybouse basin
various input configurations
Opis:: Over the past two decades, artificial neural networks (ANN) have exhibited a significant progress in predicting and modeling non-linear hydrological applications, such as the rainfall-runoff process which can provide useful contribution to water resources planning and management. This research aims to test the practicability of using ANNs with various input configurations to model the rainfall-runoff relationship in the Seybouse basin located in a semi-arid region in Algeria. Initially, the ANNs were developed for six sub-basins, and then for the complete watershed, considering four different input configurations. The 1st (ANN IP) considers only precipitation as an input variable for the daily flow simulation. The 2nd (ANN II) considers the 2nd variable in the model input with precipitation; it is one of the meteorological parameters (evapotranspiration, temperature, humidity, or wind speed). The third (ANN IIIP,T,HUM) considers a combination of temperature, humidity, and precipitation. The last (ANN VP,ET,T,HUM,Vw) consists in collating different meteorological parameters with precipitation as an input variable. ANN models are made for the whole basin with the same configurations as specified above. Better flow simulations were provided by (ANN IIP,T) and (ANN IIP,Vw) for the two stations of Medjez-Amar II and Bordj-Sabath, respectively. However, the (ANN VP,ET,T,HUM,Vw)’s application for the other stations and also for the entire basin reflects a strategy for the flow simulation and shows enhancement in the prediction accuracy over the other models studied. This has shown and confirmed that the more input variables, as more efficient the ANN model is.
Źródło:: Journal of Water and Land Development; 2021, 50; 38-47
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Ocena zasobności gleb torfowo-murszowych zlewni Tyśmienicy w składniki pokarmowe
Evaluation of nutrient abundance in peat-muck soils of the Tyśmienica river basin drainage
Autorzy:: Grzywna, A.
Powiązania:: https://bibliotekanauki.pl/articles/338501.pdf
Data publikacji:: 2014
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: gleby torfowo-murszowe
makroelementy
zasobność gleb
zlewnia Tyśmienicy
basin of the Tyśmienica River
macroelements
peat-muck soils
Opis:: Podstawowym czynnikiem wpływającym na wartość i przydatność gleby jest jej zasobność w składniki odżywcze. Zasobność ocenia się na podstawie zawartości przyswajalnych form fosforu, potasu i magnezu w glebie z uwzględnieniem odczynu gleby. Analizy chemiczne gleb torfowo-murszowych wykonano w 2012 r. Do badań wytypowano 6 odkrywek glebowych, z których pobrano po 4 próbki na zmeliorowanych torfowiskach w zlewni rzeki Tyśmienica, region Zaklęsłość Sosnowicka. Analizowane gleby torfowo-murszowe charakteryzuje kwaśny i bardzo kwaśny odczyn (pH < 5,5). W większości profili glebowych stwierdzono 2-krotnie większą zawartość fosforu, potasu i żelaza w warstwie 5–10 cm niż w warstwach głębszych. Najmniej ich zawierała najczęściej warstwa 35–40 cm. Analizowane próbki gleb charakteryzuje mała i średnia zawartość azotu ogólnego – w zakresie 1,03–3,15%. Popielność poziomów torfowych wynosi 15–17%, poziomów murszowych ponad 25%, poziomów z namułami ponad 40%.
The main factor affecting the value and usefulness of soil is its richness in nutrients. Nutrient abundance is assessed from the content of available phosphorus, potassium and magnesium in the soil, taking into account the soil acidity. Chemical analyses of peat soils were carried out in 2012 in Lublin. Four soil samples were taken from each of the six soil excavations made in drained peatlands in the Tyśmienica River catchment area, Zaklęsłość Sosnowicka region. The analysed muck-peat soil samples had very acidic and acidic pH < 5.5. In majority of soil profiles the content of phosphorus, potassium and iron in the 5–10 cm soil layer was two times higher than in the deeper layers. Smallest amounts of these elements were found in the layer 35–40 cm. The analysed samples of organic soils had low or medium total nitrogen content ranging from 2 to 3%. Ash content was 15–17% in peat layer, above 25% in muck layer and over 40% in alluvial horizons.
Źródło:: Woda-Środowisko-Obszary Wiejskie; 2014, 14, 1; 19--26
1642-8145
Pojawia się w:: Woda-Środowisko-Obszary Wiejskie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Ichtiofauna wybranych małych cieków w dorzeczu Dolnej Warty
Ichthyofauna in selected small streams in the lover Warta River drainage basin
Autorzy:: Mazurkiewicz, J.
Przybył, A.
Andrzejewski, W.
Golski, J.
Powiązania:: https://bibliotekanauki.pl/articles/339260.pdf
Data publikacji:: 2010
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: bioróżnorodność
dorzecze Dolnej Warty
ichtiofauna
rzeki nizinne
biodiversity
drainage basin of the Lower Warta
ichthyofauna
lowland rivers
Opis:: Badania ichtiologiczne przeprowadzono w czterech ciekach: Jordance, Lubni, Krzemiennej i Rudziance, leżących na Pojezierzu Lubuskim, wchodzącym w skład Pojezierza Poznańskiego. Próby ryb pozyskiwano metodą elektropołowów na wyznaczonych stanowiskach. Ogółem na wszystkich rzekach odłowiono i oznaczono 175 osobników, reprezentujących 9 gatunków. Liczebność odłowionych ryb wyraźnie dzieliła badane cieki na: bardzo ubogie - Rudzianka (jeden gatunek), nieco zasobniejsze - Jordanka i Krzemienna, w których odnotowano po trzy gatunki ryb, osiągających niewielkie rozmiary ciała oraz najzasobniejszy - Lubnia, w której złowiono sześć gatunków ryb. Dominantami w biomasie ichtiofauny Lubni i Krzemiennej były szczupak (Esox lucius L.) i płoć (Rutilus rutilus L.), natomiast największy udział w biomasie ryb rzeki Jordanka miał śliz (Barbatula barbatula L.). Ichtiofauna badanych rzek była zdominowana przez gatunki fitofilne i psammofine, w warunkach jednoczesnego braku litofili. We wcześniejszych badaniach, przeprowadzonych przez SZABLIKOWSKIEGO i ZAPOLNIKA [1980], w ichtiofaunie Rudzianki oznaczono siedem gatunków ryb (w tym śliza i kozę - Cobitis taenia L.), w Krzemiennej pięć gatunków (w tym śliza), a w Jordance trzy gatunki: cierniczka (Pungitius pungitius L.), kozę i pstrąga potokowego (Salmo trutta m. fario L.). W Lubni skład ichtiofauny również uległ niekorzystnym zmianom: wśród odłowionych ryb nie występowały oznaczone we wcześniejszych badaniach koza czy kleń (Leuciscus cephalus L.) - gatunki typowo rzeczne. Zaobserwowane w ciągu ponad 20 lat niekorzystne zmiany w składzie i strukturze ichtiofauny badanych rzek wskazują na zubożenie siedlisk.
Ichthyobiological studies were carried out in four rivers: Jordanka, Lubnia, Krzemienna and Rudzianka in Lubuskie Lakeland - a part of Poznańskie Lakeland. Fish samples were obtained by the electrofishing method in selected sites. In total, 175 fish individuals representing 9 species were caught and identified in all water courses. The number of caught fish distinctly differentiated the studied water courses into the very poor river - Rudzianka (only one species caught), and the richest rivers like the Jordanka and Krzemienna where three fish species were found in each. In the Lubnia, river, six fish species were caught. In the Lubnia and Krzemienna, the dominants in fish biomass were pike (Esox lucius L.) and roach (Rutilus rutilus L.), while the greatest fish biomass in the Jordanka river was produced by the stone loach (Barbatula barbatula L.). In the earlier study carried out by SZABLIKOWSKI and ZAPOLNIK [1980] in the Rudzianka River, seven fish species were caught (including the stone loach and the spined loach Cobitis taenia L.); in the Krzemienna River five species (including the stone loach), and in the Jordanka River - only three species: the ten-spined stickleback (Pungitius pungitius L.), the spined loach and the brown trout (Salmo trutta m. fario L.). The ichthyofauna composition in the Lubnia River had also changed unfavourably: none of the rheopilic species, like the spined loach or chub (Leuciscus cephalus L.), caught earlier was found in the present study. The fish fauna of the studied rivers was dominated by phytophilous and psammophilous species with a complete absence of lithophilous species. This fact confirms the impoverishment and contamination of the studied habitats.
Źródło:: Woda-Środowisko-Obszary Wiejskie; 2010, 10, 3; 191-199
1642-8145
Pojawia się w:: Woda-Środowisko-Obszary Wiejskie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Ładunek azotu z nawozów naturalnych na obszarze zlewni górnej Wisły
The load of nitrogen from manures in the Upper Vistula basin area
Autorzy:: Smoroń, S.
Twardy, S.
Kopacz, M.
Powiązania:: https://bibliotekanauki.pl/articles/339526.pdf
Data publikacji:: 2011
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: dyrektywa azotanowa
nawozy naturalne
obsada zwierząt
zlewnia górnej Wisły
manures
nitrate directive
stocking rate
Upper Vistula basin
Opis:: W pracy analizowano stan pogłowia zwierząt gospodarskich oraz ilość N pochodzącego z nawozów naturalnych, a także dokonano oceny zagrożenia zanieczyszczenia wód azotanami pochodzenia rolniczego, na obszarze zlewni górnej Wisły (po przekrój w Zawichoście). Kodeks dobrej praktyki rolniczej określa, że ze względów środowiskowych ilość azotu w nawozach naturalnych, pochodzących od zwierząt gospodarskich nie powinna przekraczać 170 kg·ha-¹ UR, a obsada zwierząt gospodarskich, nie może być większa niż 1,5 DJP·ha-¹ UR. Do przeprowadzenia obliczeń wykorzystano komputerowy program MacroBil opracowany w Instytucie Uprawy Nawożenia i Gleboznawstwa – PIB. Dane liczbowe wprowadzone do programu pochodziły z poszczególnych gmin. Wykorzystano również publikowane wyniki monitoringu wód powierzchniowych z lat 2005-2006. Analiza materiału obliczeniowego wykazała, że produkcja rolnicza cechowała się małą intensywnością, charakterystyczną dla rolnictwa ekstensywnego. Obsada zwierząt wynosiła 0,43 DJP·ha-¹ UR, tj. 28,7% liczby zalecanej ze względów środowiskowych, a średnia dawka N w nawozach naturalnych na tym terenie 33,5 kg·ha-¹ UR, co stanowi ok. 20% maksymalnej dawki określonej w Kodeksie. Tak mała intensywność produkcji rolniczej oznacza, że nie powinno pojawić się zagrożenie zanieczyszczenia środowiska wodnego azotanami ze źródeł rolniczych. Potwierdzają to badania WIOŚ, z których wynika, że maksymalne stężenie NO₃ w wodach powierzchniowych tego rejonu sięgało 27,4 mg·dm-³.
The paper deals with the Upper Vistula basin (up to the section at Zawichost). The status of livestock and the amount of N derived from manures was analyzed as well as the risks of water pollution by nitrates from the agricultural sources. The Code of Good Agricultural Practice specifies (for environmental reasons) that the amount of nitrogen in fertilizers originated from livestock should not exceed 170 kg per hectare of agriculture land, and the stocking rate cannot be higher than 1.5 Live stock Unit (LU) per hectare of Agriculture Land (AL). The Macrobil computer program (developed by IUNG-PIB) was used to conduct the calculations. The data for the program originated from the respective communes. The published results of surface water monitoring from the period 2005-2006 were also used. An analysis of calculation showed that agricultural production was described by the low intensity, characteristic for an extensive farming. The stocking rate was 0.43 LU per hectare of AL, i.e. 28.7% of recommended for the environmental reasons. The average rate of nitrogen from natural fertilizers in this area was 33.5 kg per hectare of AL, which is about 20% of the maximum rate set in the Code of Good Agricultural Practice. The risk for the water environment by nitrates from the agricultural sources should not appear with such low-intensity agricultural production. The studies conducted by regional inspectorates for the environment protection confirmed that the maximum concentration of nitrates in the surface waters in this region reached 27.4 mg per litre.
Źródło:: Woda-Środowisko-Obszary Wiejskie; 2011, 11, 1; 277-288
1642-8145
Pojawia się w:: Woda-Środowisko-Obszary Wiejskie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Correlation between physical and chemical parameters of water and biotic indices: The case study the White Drin River basin, Kosovo
Autorzy:: Zhushi Etemi, Ferdije
Çadraku, Hazir
Bytyçi, Arbnore
Kuçi, Tetlinda
Desku, Arbnore
Ymeri, Prespa
Bytyçi, Pajtim
Powiązania:: https://bibliotekanauki.pl/articles/292304.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: biotic index
diversity index
macroinvertebrate assemblage
pollution
the White Drin River basin
Opis:: The major impacts on aquatic ecosystems worldwide caused by land use lead to changes in their natural conditions and limitation of water use for various needs. This paper presents the results of the study of the physical and chemical parameters and macroinvertebrate assemblage in the White Drin River (or: the Drim River, Alb. the Drini i Bardhë River) basin, the largest in Kosovo. Macroinvertebrate sampled at 11 sites in the river resulted in 5946 collected benthic organisms, which in taxonomic terms belong to 12 orders and 51 families. Of the total number of organisms, 72.28% were Insects, 25.39% Amphipoda crustaceans and 2.33% were Annelide worms and Mollusk. The used biotic indices Biological Monitoring Working Party (BMWP), Ephemeroptera, Plecoptera, and Trichoptera (EPT), average score per taxon (ASPT) and Stroud Water Research Center (SWRC) classify water quality in excellent category in the sampling site S1 near the source of the White Drin River, whereas in other sampling sites, as a result of pollution, water quality varies on category II–IV. The Pearson's correlation analyses shown that the physical and chemical parameters affect the water quality and the composition of macroinvertebrates. Our results show that the parameters that adversely affect the BMWP, EPT and ASPT biotic indices as well as the Shannon–Wiener, Mergalef and Menhinik diversity indices are: pH, electrical conductivity (EC), total suspended solids (TSS), nitrates (NO₃^–) and chlorides (Cl^–). We can conclude that the anthropogenic impact on White Drin basin affects the physical, chemical and biological parameters of the water therefore these parameters should be constantly included in Biomonitoring and Management plans for water resources in Kosovo.
Źródło:: Journal of Water and Land Development; 2020, 46; 229-241
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Water management measures analysed for Dutch basins to reduce flooding
Analiza sposobów gospodarki wodnej zmierzających do ograniczenia powodzi na przykładzie zlewni holenderskich
Autorzy:: Querner, E. P.
Powiązania:: https://bibliotekanauki.pl/articles/293369.pdf
Data publikacji:: 2007
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: dorzecze
ewapotranspiracja
modelowanie
opad
scenariusz
wody gruntowe
wody powierzchniowe
zlewnia
drainage basin
evapotranspiration
groundwater
modelling
rainfall
river basin
scenario
surface water
Opis:: Flooding in the northern part of The Netherlands has caused serious economic threats to densely populated areas. Therefore a project has been carried out in a pilot area to assess the retention of water in two river basins as a way to reduce flooding. The physically-based groundwater and surface water model SIMGRO was used to model the hydrology of the basins. The model was calibrated using discharges and groundwater levels. Scenarios of measures to assess the possibility of retaining water in the basin were then defined and tested. The first measure was the retention of higher discharges using culverts or gates in the upstream part of the basin. The second measure was to make the streams shallower and thereby, increase flood plain storage. The last measure was flood water storage in a designated area in the downstream part of one basin. The analysis indicates that holding water in the upstream parts of the basins proved to be feasible and can result in significant reductions of peak flows.
Powodzie w północnej części Holandii stwarzają poważne zagrożenie ekonomiczne dla gęsto zaludnionych obszarów. Dlatego też na obszarze pilotowym podjęto badania, mające na celu ocenę retencji wody jako sposobu ograniczenia powodzi w dwóch zlewniach rzecznych. Warunki hydrologiczne zlewni zobrazowano wykorzystując model SIMGRO w odniesieniu do wód podziemnych i powierzchniowych. Model kalibrowano za pomocą odpływów i poziomów wód gruntowych. Następnie zdefiniowano i testowano różne warianty sposobów oceny możliwości retencjonowania wody w zlewni. Pierwszym sposobem była retencja dużych przepływów wody za pomocą przepustów i zastawek w górnej części zlewni. Drugi sposób polegał na wypłycaniu cieków i zwiększeniu pojemności tarasów zalewowych. Ostatnim sposobem było przetrzymywanie wód powodziowych na specjalnie przeznaczonych do tego terenach w dolnej części jednej ze zlewni. Wyniki analizy dowodzą, że zatrzymywanie wody w górnej części zlewni było wykonalne i mogło spowodować znaczące zmniejszenie fali powodziowej.
Źródło:: Journal of Water and Land Development; 2007, 11; 45-58
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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