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Tytuł:
Analysis of the distribution of statistical concentrations of pollutants in samples of treated wastewater from small sewage treatment plants
Autorzy:
Kaczor, Grzegorz B.
Powiązania:
https://bibliotekanauki.pl/articles/2174301.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
pollutants
sewer system
significance test
statistical distribution
treatment plant
Opis:
The aim of the research was to show which theoretical statistical distribution best reflects and describes the variability of pollutant concentrations in treated sewage, discharged from small sewage treatment plants, characterised by a value below 2000 PE. The statistical analysis additionally takes into account the influence of the number of measuring sequence data on the shape and level of the distribution fit. The data for the research were obtained from three small sewage treatment plants, operating in the Lesser Poland, 10, 11 and 14 km from Kraków. Due to their size, these facilities are included in the group of treatment plants below 2000 PE. The research was conducted for 10 years. In the statistical analysis, 20-, 40-, 60- and 80-element data series were used, including the values of biochemical oxygen demand (BOD5), chemical oxygen demand (CODCr) and total suspended solids (TSS), determined in samples of treated wastewater. Two commonly used tests, Kolmogorov-Smirnov λ and Pearson’s χ2 test were used to assess the fit of the theoretical statistical distribution to the empirical data distribution. Statistical analysis showed that the studied communities were characterised by an asymmetric, right-oblique distribution. Most often, the empirical distribution of the analysed measurement sequences was consistent with the Fisher-Tippett distribution. On the basis of the χ2 test, this distribution was described by a total of 31 out of 36 analysed groups at the significance level of a = 0.05. Other distributions that often describe the analysed empirical data are: Gamma, log-normal, Chi-square, and Weibull. The common feature of these distributions is usually asymmetry, right oblique. The skewness value ranges from 0.15 to 1.69.
Źródło:
Journal of Water and Land Development; 2022, 55; 115--124
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the effectiveness of lightning and surge protection in a large solar farm
Autorzy:
Sobolewski, Konrad
Sobieska, Emilia
Powiązania:
https://bibliotekanauki.pl/articles/2086693.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ANSYS simulations
electric safety
grounding system
magnetic field distribution
lightning modeling
lightning protection
photovoltaic power plant
Opis:
The aim of the considerations presented in the article was a stand-alone groundbased photovoltaic power plant. The article is devoted to the qualitative analysis of some lightning protection configurations. These types of constructions often require an individual look at the design and execution of lightning protection installations, which causes problems with the selection of optimal solutions. These problems relate primarily to the way the lightning rods are arranged to create protection zones, but also to the way they are attached: to the supporting structure for PV modules or as free-standing. Another problem raised in the article is the way how lightning current is discharged from rods to the ground and how it is dispersed there. Due to the vast area of such facilities and the requirements for electrical safety, it is necessary to consider and design a ground system with optimal electrical parameters, but also technical and economic ones. All these elements have their impact on the value of voltages induced in the electrical installation, which is also presented in the content of the article as the magnetic field distribution and calculation of induced voltages in an exemplary configuration. Finally, this article will compare described technical solutions encountered in selecting the best protection method for this type of photovoltaic installation.
Źródło:
Archives of Electrical Engineering; 2022, 71, 2; 523--542
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the reliability of the operation of a sewage treatment plant using Monte Carlo simulation
Autorzy:
Migdał, Karolina
Operacz, Agnieszka
Vaskina, Iryna
Śliz, Paulina
Tavares, Jorge
Almeida, Adelaide
Migdał, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2203571.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
efficiency
mathematical simulation
Monte Carlo simulation
pollution indicators
probability distribution
sewage treatment plant
Opis:
The aim of the study was to model the operation of a wastewater treatment plant using the Monte Carlo method and selected probability distributions of random variables. Pollutant indices in treated wastewater were analysed, such as: biological oxygen demand (BOD 5), chemical oxygen demand (COD Cr), total suspended solids (TSS), total nitrogen (N tot), total phosphorus (P tot). The preliminary analysis of pollution indicators series included the: calculation of descriptive statistics and assessment of biological degradability of wastewater. The consistency of the theoretical distributions with the empirical ones was assessed using Anderson-Darling statistics. The best-fitting statistical distributions were selected using the percent bias criterion. Based on the calculations performed, it was found that the analysed indicators of pollution in treated wastewater were characterised by an average variability of composition for BOD 5, COD Cr and TSS, and a high variability of composition for N tot and P tot. The best fitted distribution was log-normal for BOD 5, TSS, N tot and P tot and general extreme values for COD Cr. The simulation carried out using the Monte-Carlo method confirmed that there may be problems associated with the reduction of nutrients (N tot and P tot) the analysed wastewater treatment plant. Results of values obtained of the risk values of negative control of wastewater treatment plant operation for biogenic compounds, different from 1, indicate that the number of exceedances at the outflow may be higher than the acceptable one.
Źródło:
Journal of Water and Land Development; 2022, Special Issue; 80--90
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of marble powder amendment on hydraulic properties of a sandy soil
Autorzy:
Farhadi-Machekposhti, M.
Valdes-Abellan, J.
Pla, C.
Benavente, D.
Pachepsky, Y.
Powiązania:
https://bibliotekanauki.pl/articles/2082885.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
saturated hydraulic conductivity
soil water
retention curve
field capacity
plant available water
pore size
distribution
Opis:
Marble powder is one of carbonate rock amendments that is used to improve soil reaction. We hypothesized that the powdered marble addition can cause favorable changes in hydraulic properties of sandy soils. Six levels of marble powder addition to an aridisol soil (0%; M0; 5%; M5; 10%; M10; 15%; M15; 20%; M20 and 25%, M25; by bulk volume) were analyzed in triplicate. The saturated hydraulic conductivity and soil water retention curves were obtained. Pore space properties were investigated using soil water retention curves, mercury intrusion porosimetry and scanning electron microscopy. The saturated hydraulic conductivity significantly decreased (between 83 and 97% for M5 and M25 respectively) and parameters α and n of the van Genuchten model significantly decreased in marble-amended soils. Both field capacity and permanent wilting point increased with the addition of marble powder. Plant-available water, increased significantly until 10% of marble powder application; higher percentages of application did not provide additional significant changes in the plant-available water. Pore space distributions from soil water retention curves parameters showed an increase in the pore size range and a decrease in the average pore size; pore space distribution from the scanning electron microscopy also showed the presence of a new family of dominant pore sizes which was not detected by the soil water retention curves parameters approach. It was concluded that the addition of marble powder can improve the ability of soil to store water providing an advantage for irrigation water management in water scarce environments. Further research will have to address the impact of marble powder amendment under field semi-arid conditions.
Źródło:
International Agrophysics; 2020, 34, 2; 223-232
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Systematics and distribution of spruce species in the North-West of Russia
Autorzy:
Orlova, L.
Gussarova, G.
Glazkova, E.
Egorov, A.
Potokin, A.
Ivanov, S.
Powiązania:
https://bibliotekanauki.pl/articles/2078206.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Picea
diagnostic characters
morphology
plant variation
geographic distribution
Opis:
Norway spruce (Picea abies) and Siberian spruce (P. obovata) are among the most important forest-forming coniferous species in the boreal part of Eurasia. Despite numerous publications on the taxonomy of Norway spruce and closely related taxa (P. obovata Ledeb. and P. fennica (Regel) Kom.), the problem of their identification, as well as clarification of their taxonomic status, has not been solved so far. Species delimitation is particularly challenging when P. abies, P. obovata and P. fennica occur in sympatry. Our study aims to assess taxonomic value of proposed earlier and search for stable diagnostic characters of cones and their scales to distinguish Picea abies and its sympatric in the North-West of Russia P. fennica and P. obovata. In addition, we analyzed and updated information on geographical distribution and phytocenotic characteristics of the above-mentioned species in the North-West of the European part of Russia. We examined herbarium specimens and cones sampled from 88 trees from 22 Picea stands located throughout the study region. Each tree was represented on average by 5 cones, in total 415 cones were analyzed. Morphometric analyses included 16 morphological characters of cones and their scales selected based on our own observations and published data. Multivariate comparison had shown a large overlap between P. obovata and P. fennica, while individuals of P. abies formed a separate and less overlapping cluster. Among the six qualitative (discrete) characters, shape of seed scale and shape of its upper margin have non-overlapping frequency distributions and can separate P. abies and P. obovata. Several new diagnostic characters are proposed: morphology and size of bract scales and ratio of the size of seed scales and bract scales. Phytocenotic analysis showed that different spruce taxa occupy specific habitats, which in their turn connected with the latitudinal gradient: in normally drained habitats, Picea obovata is found mainly in poor shrubby-green-mossy forests, which are typical of the northern and middle parts of the Northern taiga; Picea abies – in richer green-mossy habitats (Vaccinioso-hylocomiosum, Oxalidoso-hylocomiosum, Hylocomiosum), which begin to occur already from the middle part of the Northern taiga. Picea fennica occupies both habitats.
Źródło:
Dendrobiology; 2020, 84; 12-29
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of Heavy Metals in Apple Tissues Grown in the Soils of Industrial Area
Autorzy:
Imeri, Resmije
Kullaj, Endrit
Millaku, Lulzim
Powiązania:
https://bibliotekanauki.pl/articles/124051.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
toxic metals
heavy metals
polluted soils
plant
soils
accumulation
distribution
health
Opis:
The exposure of heavy metals in the Drenas site – Kosovo has risen dramatically in the last 30 years because of mining and smelting activities. The study investigated the heavy metal in soil, accumulation in different parts of apple trees near the industrial sites of Drenas. The accumulation ratio values of heavy metals were calculated to assess the potential health risks. The mean concentrations of the heavy metals in the soil were in the following order of magnitude Ni > Zn > Fe > Cr > Cu > Pb > Cd > As, while that in the apples were in the order of magnitude Ni > Cr > Fe > Cu > Pb > Zn > Cd > As, in the leaves – Fe > Zn > Cu > Cr > Ni > Pb > Cd > As and in the shoots – Zn > Fe > Cu > Cr > Ni > Pb > Cd > As. Compared to control, the contents of analyzed metals from plant tissues of apple trees in the contaminated area were significantly higher (p<0.001). The concentration of Ni, Pb, Cr, Fe etc. in the apple tissue increased along with the heavy metal content in soils in the polluted area. The high accumulation ratio values for Pb (1.1), Cd (0.62), Cr (0.93) and Ni (0.46) were characteristic for the investigated species and indicate the accumulation ability.
Źródło:
Journal of Ecological Engineering; 2019, 20, 3; 57-66
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estymacja wartości skutecznej napięcia w nieopomiarowanych punktach sieci elektroenergetycznej z wykorzystaniem środowiska symulacyjnego
Estimation of voltage in distribution networks using a simulation environment
Autorzy:
Dutka, Mateusz
Piątek, Krzysztof
Siostrzonek, Tomasz
Barczentewicz, Szymon
Świątek, Bogusław
Powiązania:
https://bibliotekanauki.pl/articles/267729.pdf
Data publikacji:
2019
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
system dystrybucyjny
symulacja pracy
system pomiarowy
wartości skuteczne napięcia
propagacja
elektrownia fotowoltaniczna
distribution system
symulation
measuring system
voltage effective values
propagation
photovoltaic power plant
Opis:
W artykule zaprezentowano możliwości wykorzystania oprogramowania OpenDSS do komputerowej symulacji pracy sieci elektroenergetycznych w estymacji wartości skutecznej napięcia w nieopomiarowanych punktach sieci, jako wsparcie dla operatorów systemów dystrybucyjnych w monitorowaniu i diagnostyce pracy ich sieci. W artykule przedstawiono porównanie wyników pomiarów oraz symulacji pracy wybranego obszaru systemu dystrybucyjnego na poziomie średniego napięcia.
The article contains a comparison of real measurements and simulation results of a distribution system at medium voltage with a resolution of 10-minutes. The cooperation of the measuring system and the simulation environment allowed to obtain a synergy effect by simplifying the model and at the same time increasing the accuracy of estimation. It was proposed to use a simulation environment to estimate the impact of renewable energy power plants on the distribution network.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2019, 67; 73-77
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial distribution of early blight disease on tomato, climatic factors and bioefficacy of plant extracts against Alternaria solani
Autorzy:
Hussain, A.
Ali, S.
Abbas, H.
Ali, H.
Khan, S.W.
Powiązania:
https://bibliotekanauki.pl/articles/12689876.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
Pakistan
plant cultivation
tomato
vegetable
climatic factor
bioefficacy
plant extract
plant pathogen
Alternaria solani
plant disease
blight
early blight
field survey
spatial distribution
spatial analysis
Geographic Information System
Opis:
Information on the spatial variability in plant disease is essential for location-based disease management. In the current study, the spatial distribution of tomato early blight disease was ascertained in District Gilgit, GilgitBaltistan, Pakistan. The comprehensive field survey was carried in two growing seasons (2014–2015), whereas in each growing season, 62 tomato fields were surveyed. Based on the distribution of disease, the respective thematic maps (incidence and severity) were prepared using Arc Map 10.1 with spatial analyst function of Arc GIS software by means of the inverse distance weight (IDW) interpolation method. Results indicate that early blight of tomato is spatially distributed in both growing seasons. However, in the first growing season, the disease incidence ranged from 10.22% to 44.16% and during later season 14.03–49.16%, whereas 5.37–16.40% and 6.52–26.94% severity was recorded. Furthermore, this information indicates that higher disease infestation occurred in 2015 in relation to 2014. This information linked to metrological data (temperature, precipitation and relative humidity), seemingly favored the early blight development during the growing period. Seven botanical extracts were tested against pathogen Alternaria solani at different concentrations (4, 6 and 8%). Results revealed that all tested plant extracts showed antifungal activities. However, at 8% concentration of plant extract, Datura starmonium, Berberis orthobotry, Podophyllum emodi and Uretica dioica exhibited >60%, while Peganum harmala, Artemisia maritima and Capparis spinosa <60% antifungal properties. The information generated due to this study could help the tomato growers regarding disease management and selection of resistant cultivars, improving profitability and food security in the Gilgit region.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 6; 29-38
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterising root density of peach trees in a semi-arid Chernozem to increase plant density
Autorzy:
Paltineanu, C.
Septar, L.
Gavat, C.
Chitu, E.
Oprita, A.
Moale, C.
Calciu, I.
Vizitiu, O.
Lamureanu, G.
Powiązania:
https://bibliotekanauki.pl/articles/24890.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
root density
peach tree
black earth
plant density
root distribution
soil property
trench method
Źródło:
International Agrophysics; 2016, 30, 1
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of vascular plant species in woodland patches of Ojcow National Park (southern Poland) in relation to seed dispersal
Autorzy:
Moszkowicz, L.
Powiązania:
https://bibliotekanauki.pl/articles/58019.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
plant distribution
vascular plant
plant species
woodland
Ojcow National Park
Polska
seed dispersal
species richness
ancient woodland
multiple regression
Opis:
Plant diaspore dispersal is a fundamental process affecting the development of forest vegetation and its natural regeneration, especially with regard to typical woodland species, which spread slowly and form short-term soil seed banks. Most of these species have poor seed dispersal mechanisms, which is the major cause of their very slow expansion. The following questions were asked: (i) is there a relationship between the age of a woodland and the presence of forest vascular plant species representing different seed dispersal types; (ii) how do the proportions change between species representing different seed dispersal types in relation to the age of woodland; (iii) what factors determine the presence of species representing a given seed dispersal type; (iv) which factors affect the presence and which ones influence the abundance of selected woodland species? A multiple regression models were developed based on data obtained from 144 woodland patches designated for the study. A probit regression analysis was performed for selected species exhibiting various seed dispersal models. Woodland plants of all seed dispersal types show a significant relationship with the age of woodland, starting from the strongest linkage: anemochores, myrmecochores, endozoochores, epizoochores, barochores, autochores. As the woodland ages, the proportion of forest myrmecochores and anemochores grows, whilst the proportion of autochores, epizoochores and endozoochores shrinks. Results obtained indicate that the direct proximity of ancient woodland has a major effect on the occurrence of more poorly dispersing plants in recent woodlands, such as myrmecochores and heavy anemochores.
Źródło:
Acta Societatis Botanicorum Poloniae; 2016, 85, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of infection of Virginia mallow shoots by fungus Sclerotinia sclerotiorum on the contents and distribution of aluminium, manganese and iron
Wpływ porażenia pędów ślazowca pensylwańskiego grzybem Sclerotinia sclerotiorum na zawartość i rozmieszczenie glinu, manganu i żelaza
Autorzy:
Kalembasa, D.
Jaremko, D.
Bik, B.
Kaczmarek, J.
Jedryczka, M.
Powiązania:
https://bibliotekanauki.pl/articles/47241.pdf
Data publikacji:
2016
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydawnictwo PB
Tematy:
plant infection
Sida hermaphrodita
Virginia fanpetal
shoot
fungi
Sclerotinia sclerotiorum
aluminium distribution
aluminium content
manganese content
iron content
manganese distribution
iron distribution
Opis:
The aim of the study was to determine the effect of inoculation of Virginia mallow (Sida hermaphrodita [L.] Rusby) with fungus Sclerotinia sclerotiorum [Lib.] de Bary, which causes stem rot, on the contents and distribution of aluminium, manganese and iron in the shoots of this plant. Field study was carried out during three years (2011-2013) in the soil and weather conditions of central-west Poland. Inoculation was carried out with isolates obtained from rapeseed and mallow. It consisted in a slight damage of stem epidermis and inserting wheat grain overgrown with mycelium of a given isolate. During plant growth, strong infection of mallow shoots was observed, which caused inhibition in the growth and development of the plant. At the stage of technological maturity, shoots were harvested from both the control and inoculated plots for chemical analyses. Contents of the studied elements were determinated in analytical solutions obtained from biomass ash after its “dry combustion” method, using ICP-OES spectrometer. Contents and distribution of aluminium, manganese and iron in mallow shoots depended upon plant parts and placement of pathogens on the stem. The highest amount of aluminium was found in the inoculated part, and the lowest in the apices part, regardless of isolate origin. In the case of iron and manganese distribution, statistically significant effect of the applied pathogen was found. Isolate from the mallow caused greater manganese accumulation and lower iron accumulation. The conducted study demonstrates a significant effect of infection with fungus S. sclerotiorum on the physiological processes that occur in Virginia mallow plants.
Celem badań było oznaczenie wpływu inokulacji ślazowca pensylwań-skiego (Sida hermaphrodita [L.] Rusby) grzybem Sclerotinia sclerotiorum [Lib.] de Bary, wywołującym zgniliznę twardzikową, na zawartość i rozmieszczenie glinu, manganu i żelaza w pędach tej rośliny. Badania polowe prowadzono przez trzy lata (2011-2013) w warunkach glebowo-klimatycznych środkowozachodniej Polski. Inokulację przeprowadzono izolatami uzyskanymi z rzepaku i ślazowca; polegała ona na lekkim uszkodzeniu epidermy na łodydze i umieszczeniu w tym miejscu ziarna pszenicy przerośniętego grzybnią danego izolatu. W trakcie wegetacji roślin stwierdzano silne porażenie pędów ślazowca, powodujące zahamowanie wzrostu i rozwoju roślin. W fazie dojrzałości tech-nologicznej z obiektów kontrolnych i inokulowanych pobrano pędy do analiz chemi-cznych. Zawartość badanych pierwiastków oznaczono w roztworach analitycznych uzyskanych z popiołu biomasy po jej mineralizacji „na sucho”, na spektrometrze ICP- -OES. Zawartość i rozmieszczenie glinu, manganu i żelaza w pędach ślazowca była uzależniona od zdrowotności roślin oraz miejsca na łodydze. Najwięcej glinu stwierdzano w części inokulowanej, a najmniej w części wierzchołkowej, niezależnie od pochodzenia izolatu. W przypadku rozmieszczenia żelaza i manganu stwierdzono statystycznie istotny wpływ zastosowanego patogena; izolat ze ślazowca spowodował większe nagromadzenie manganu, ale mniejsze – żelaza. Wykonane badania wskazują na znaczny wpływ porażenia grzybem S. sclerotiorum na procesy fizjologiczne przebiegające w roślinach ślazowca pensylwańskiego. Osobniki z objawami zgnilizny twardzikowej tworzą biomasę o innych parametrach jakościowych.
Źródło:
Acta Scientiarum Polonorum. Agricultura; 2016, 15, 4
1644-0625
Pojawia się w:
Acta Scientiarum Polonorum. Agricultura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Five new bramble species (Rubus, Rosaceae) in the flora of the Czech Republic
Autorzy:
Velebil, J.
Travnicek, B.
Sochor, M.
Havlicek, P.
Powiązania:
https://bibliotekanauki.pl/articles/41123.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
bramble
new species
plant species
Rubus
Rosaceae
flora
Czech Republic
geographic distribution
ecology
Opis:
This paper presents the results of extensive field research on the occurrence of Rubus L. species in the Czech Republic, especially in the frontier areas near the German border. In this area, Rubus adornatus, R. fasciculatiformis and R. perlongus were newly discovered. The other species, R. ambulans and R. stohrii, were discovered in the eastern and northern parts of Bohemia. A description, an illustration, photos and a list of localities are provided for each species. Taxonomy and nomenclature, ecology, distribution and etymology are discussed. The ploidy level of the mentioned species is presented here for the first time. All of these species are new for the flora of the Czech Republic.
Źródło:
Dendrobiology; 2016, 75
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lowland station of the Gentiana asclepiadea L. in Mikołow (Silesian Upland, S Poland)
Autorzy:
Fojcik, B.
Wierzgon, M.
Powiązania:
https://bibliotekanauki.pl/articles/790591.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
Polska
Silesian Upland
Mikolow town
flowering plant
Gentianaceae
willow gentian
Gentiana asclepiadea
plant species
plant morphology
plant distribution
Opis:
Gentiana asclepiadea L. is a montane flowering plant species that has a very limited lowland distribution in Poland. The only existing lowland station that is known occurs in the Katowice-Muchowiec (Silesian Upland). In this paper a second station from the Silesian Upland in the Mikołów-Jamna area is described. A single cluster of rare albiflora form was observed within the newly discovered population. Information about the status and distribution of the Willow Gentian in Poland is also given.
Źródło:
Steciana; 2015, 19, 1
1689-653X
Pojawia się w:
Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Orobanche elatior and O. kochii (Orobanchaceae) in Poland: distribution, taxonomy, plant communities and seed micromorphology
Autorzy:
Piwowarczyk, R.
Krajewski, L.
Powiązania:
https://bibliotekanauki.pl/articles/56706.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Orobanche elatior
Orobanche kochii
Orobanchaceae
Polska
distribution
taxonomy
plant community
seed
micromorphology
phytocoenosis
SEM analysis
Opis:
Species of the genus Orobanche (Orobanchaceae), parasitic on Centaurea in Central Europe, were previously considered to belong to the O. elatior group. At present, the taxon is differentiated into two species, O. elatior Sutton and O. kochii F.W. Schultz. The paper presents for the first time the distribution of O. elatior and O. kochii in Poland based on a critical revision of herbarium and the literature data, as well as the results of field studies conducted between 1999 and 2014. The majority of the species’ localities are in south Poland: Silesia-Cracow, Małopolska and the Lublin Uplands. The distribution of both species in Poland is mapped and chronologically organized, and is thus the most recent in Europe. The taxonomy, host preferences, and ecology are also discussed. Seeds of both species were also investigated using light and scanning electron microscopy, which resulted in the designation of diagnostic features. The new color form of O. kochii f. citrina is described and illustrated. An account of all revised herbarium specimens collected from Poland, deposited in Poland and neighboring countries, is presented.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Climate influence on radial growth of Fagus sylvatica growing near the edge of its distribution in Bukk Mts., Hungary
Autorzy:
Garamszegi, B.
Kern, Z.
Powiązania:
https://bibliotekanauki.pl/articles/41363.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
climate change
drought
vegetation period
radial growth
beech
Fagus sylvatica
plant distribution
Bukk Mountains
Hungary
Opis:
Future of beech (Fagus sylvatica L.) in a changing climate is one of the greatest debates in Europe among the studies dealing with the climate change generated xeric limit shifting. We investigated a submontane beech stand’s growth response to climate change in Northern Hungary during the past 60 years following dendrochronological methods. Tree-ring width data were processed using three alternatives of standardization. To recover the basic climate-growth relationships for beech we analyzed the correlation between the tree-ring width indices and monthly precipitation and temperature data, furthermore two drought indices were employed. Late spring-early summer precipitation was the primary climatic factor governing the beech growth at the study site since the early 1950s, while summer heat played a secondary obstructive role documented by the significant negative correlation. A 30-years running window correlation was used to identify whether the climate-growth connections changed due to the unfavorable climatic trends. The results indicated no evidence of a distinct decline in radial increment, however, a significant increase in climatic impact on growth has been detected including probable changes and shifts in the vegetation period.
Źródło:
Dendrobiology; 2014, 72
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 81

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