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    Wyświetlanie 1-13 z 13
    Tytuł:
    Influence of nano-silica and humic acid on physiological characteristics of Bermuda grass (Cynodon dactylon L.) under salinity stress
    Autorzy:
    Sharifiasl, R.
    Kafi, M.
    Saidi, M.
    Kalatejari, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/12675903.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Iran
    Bermuda grass
    Cynodon dactylon
    wild plant
    water salinity
    salinity condition
    salinity stress
    nanosilica
    humic acid
    physiological characteristics
    chlorophyll
    proline
    Opis:
    This research was conducted to evaluate the effects of water salinity and nano-silica (NS) and humic acid (HA) on Bermuda grass. The study was carried out under greenhouse and exterior space conditions in a completely randomized design with factorial arrangements. Treatments included 4 water salinity levels (0, 5, 7 and 9 dS/m) and 4 level of NS (0, 1, 2 and 3 mm/l) as well as 4 level of HA (0, 50, 100 and 150 mg/l). Results indicated a decrease in chlorophyll content, and increase in proline, malondialdehyde (MDA), catalase (CAT), superoxide dismutase (SOD) and electrolyte leakage (EL) with increasing levels of salinity. The chlorophyll content in greenhouse and exterior space also increased with increasing levels of NS and HA, while proline in two environments, with increasing levels of NS and HA decreased. EL with increasing levels of NS fluctuated, but with increasing levels of HA, it decreased in two environments. With increasing levels of NS, CAT in both environments was eventually decreased after the oscillation, but there was no particular trend in HA levels. With increasing levels of NS and HA, MDA in the greenhouse decreased and in the exterior space – it increased. Finally, by increasing levels of NS and HA, SOD did not show any change in the greenhouse condition, but in the exterior space, the SOD was decreased.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 4; 203-212
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Warm waters of summer 2002 in the deep Baltic Proper
    Autorzy:
    Feistel, R.
    Nausch, G.
    Mohrholz, V.
    Lysiak-Pastuszak, E.
    Seifert, T.
    Matthaus, W.
    Kruger, S.
    Hansen, I.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/47540.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    temperature
    hydrography
    inflow
    warm water
    summer
    salinity
    Baltic Sea
    oxygen condition
    Opis:
    From October 2002 until March 2003 surprisingly warm, oxygenated waters were frequently encountered in the Baltic Sea in the area between the Bornholm and Fårö Deeps from the halocline down to the bottom. Owing to their ventilation effect in the stagnating deep waters, their occasional observations have partly been incorrectly attributed to the inflow events of October 2002 or January 2003. The emergence of some of these waters can be traced back to the exceptional summer weather conditions in August and September 2002 in central Europe. The warm waters played a remarkable renewal pacemaker role for the subsequent important winter inflow of January 2003. The evolution of this summer inflow is described and possible causes are discussed.
    Źródło:
    Oceanologia; 2003, 45, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Processes and factors influencing the through-flow of new deepwater in the Bornholm Basin
    Autorzy:
    Stigebrandt, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/49102.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    hydrographic condition
    Bornholm Basin
    salinity
    oxygen concentration
    vertical stratification
    deep water
    Baltic Sea
    Opis:
    This paper is based on the idea that the hydrographical conditions in the Bornholm Basin, and any other basin, can be understood from knowledge of general hydromechanical principles and basin-specific factors. Published results on the variability of the vertical stratification are shown and discussed. Such analyses demonstrate the residence time of water at different depth levels. Different modes of currents forced by winds and by stratification gradients at open vertical boundaries are presented. Vertical mixing is discussed and published results for the Bornholm Basin are shown. An experiment demonstrates that the diffusive properties of the enclosed basin, i.e. below the sill depth of the Słupsk Furrow, can be computed quite well from the horizontal mean vertical diffusivity obtained from historical hydrographical observations. A published two decades long simulation of the vertical stratification shows that the through flow and modification of new deepwater in the Bornholm Basin can be well described based on existing knowledge regarding crucial hydromechanical processes. It also suggests, indirectly, that there should be a weak anticyclonic circulation above the sill depth, which is supported by current measurements.
    Źródło:
    Oceanologia; 2017, 59, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydrographic and hydrochemical conditions in the Gotland Deep area between 1992 and 2003
    Autorzy:
    Nausch, G.
    Matthaus, W.
    Feistel, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/48546.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    nutrient pool
    temperature
    hydrography
    hydrochemical condition
    ventilation
    nutrient distribution
    bottom water
    salinity
    Baltic Sea
    stagnation period
    hydrographic condition
    Gotland Deep
    Opis:
    The paper describes the hydrographic-hydrochemical development in the eastern Gotland Basin between the major saltwater inflows into the Baltic Sea in 1993 and 2003. This period is characterised by only low inflow activity. The most important hydrographic events were the effects of the very strong inflow in 1993 and the weak inflows in 1993/1994 and 1997. The 1993/1994 inflows led to deep-water renewal, a steep fall in deep-water temperatures, and increasing salinity. The effects of the inflow of very warm, saline and oxygen-rich water in autumn 1997 were observed in the deep water in 1998, resulting in temperatures rising to 7◦C. The recent renewal in spring 2003 is reflected in the decreasing temperature, higher salinity and improved ventilation of the bottom water. Changes in the redox conditions exert a considerable influence on the nutrient distribution. During stagnation periods, there is enrichment of phosphate and ammonium, while nitrate is absent. Thus, around 31 μmol l−1 ammonium and 7 μmol l−1 phosphate were measured prior to the water renewal in 2003. Deepwater ventilation results in lower phosphate concentrations of around 2 μmol l−1, the nitrification of ammonium and the occurrence of nitrate. For the observation period, an estimate of nutrients stored in the deep water was done for the eastern Gotland Basin. During the recent stagnation period, there was an increase of up to 150% in the phosphate pool below the halocline, whereas the pool of inorganic nitrogen compounds decreased to 80% compared with 1992 when the previous stagnation period had ended. Under specific circumstances, these unbalanced nutrients can be made available to the upper water layers and can induce large-scale blooms of algae, especially of cyanobacteria.
    Źródło:
    Oceanologia; 2003, 45, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of physicochemical parameters on zooplankton in the brackish, coastal Vistula Lagoon
    Autorzy:
    Paturej, E.
    Gutkowska, A.
    Koszalka, J.
    Bowszys, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/48536.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    physicochemical parameter
    zooplankton
    brackish water
    Vistula Lagoon
    environment condition
    canonical correspondence analysis
    temperature
    salinity gradient
    Opis:
    This paper analyzes whether physicochemical properties significantly influence the occurrence of zooplankton in a brackish reservoir. The studies were carried out on the Vistula Lagoon in August and September from 2006 to 2009 at 32 research sites. The environmental conditions in the Vistula Lagoon varied widely. At the time of the investigation, 17 species of rotifers, six species of Cladocera, and ten species of Copepoda were noted, and the total density of plankton fauna ranged from 145 to 765 ind. dm3. Statistical analysis demonstrated a significant correlation between the occurrence of some zooplankton species and certain environmental parameters, whereas the sampling sites were grouped according to study years. The zooplankton systems recorded at the research sites in 2006 constitute the most disparate group. Thus, it can be concluded that physicochemical properties might significantly impact both individual species (depending on their environmental demands) and entire zooplankton clusters.
    Źródło:
    Oceanologia; 2017, 59, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Annual phytoplankton dynamics in the Gulf Saint Vincent, South Australia, in 2011
    Autorzy:
    Leterme, S.C.
    Jendyk, J.-G.
    Ellis, A.V.
    Brown, M.H.
    Kildea, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/48952.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    phytoplankton community
    dinoflagellate
    diatom
    salinity
    nutrient
    turbulence
    environment condition
    Saint Vincent Gulf
    South Australia
    annual cycle
    Źródło:
    Oceanologia; 2014, 56, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Proliferation of peroxisomes in pea root nodules - an influence of NaCl- or Hg2plus-stress conditions
    Autorzy:
    Borucki, W
    Powiązania:
    https://bibliotekanauki.pl/articles/58800.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    proliferation
    peroxisome
    pea
    root nodule
    sodium chloride
    stress condition
    Pisum sativum
    cytochemistry
    catalase activity
    morphometry
    salinity
    mercury treatment
    Opis:
    Morphometric procedures were used to examine peroxisome number and di-stribution in pea (Pisum sativum L.) root nodules under NaCl (50 mM) or HgCl2 (7.3 µM) treatment. Peroxisomes were visualized cytochemically in meristem, invasion zone and prefixing zone of pea root nodules by catalase (EC 1.11.1.6) activity. The observations using light and electron microscopy revealed that the peroxisomes were predominantly spherical in shape and showed catalase activity. In nitrogen fixation zone, catalase active peroxisomes were observed occasionally. Bacteroids of nitrogen fixing zone showed enhanced cata-lase activity probably as a response to higher level of oxidative stress. Fluorescence microscopy investigations revealed enhanced level of (homo)glutathione in prefixing and nitrogen-fixing zone of NaCl- and Hg2+treated nodules, which served as an indicator of antioxidative response. Morphometric measurements revealed that during differentiation of meristematic cells into central tissue (bacteroidal tissue) cells an increase in peroxisome number was observed in unstressed nodules. Peroxisomes located in meristem, invasion zone and prefixing zone of NaCl- and Hg2+-treated nodules outnumbered that in control nodules. A substantial enlargement of peroxisome profiles was detected in NaCl- and Hg2+treated nodules. Peroxisome divisions observed in meristematic and infection thread penetration zone were responsible for an increase in peroxisome number.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2007, 76, 4; 287-298
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes of water physical features as indicators of the convection movements in the coastal zone of the Pomeranian Bay
    Zmiany cech fizycznych wód jako wskaźnik ruchów konwekcyjnych w strefie brzegowej Zatoki Pomorskiej
    Autorzy:
    Kowalewska-Kalkowska, H.
    Lejman, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/85081.pdf
    Data publikacji:
    2003
    Wydawca:
    Akademia Pomorska w Słupsku
    Tematy:
    water temperature
    salinity change
    sea water
    air temperature
    wind condition
    physical feature
    indicator
    convection movement
    coastal zone
    Pomeranian Bay
    sea surface temperature
    summer period
    meteorological condition
    surface water
    Źródło:
    Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2002-2003, 07
    1643-0115
    Pojawia się w:
    Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seasonal composition and population density of zooplankton in Lake Timsah, Suez Canal, Egypt
    Autorzy:
    El-Sherbiny, M.M.
    Al-Aidaroos, A.M.
    Gab-Alla, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/47480.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    cladoceran
    composition
    copepod
    dissolved oxygen
    diversity
    Egypt
    Lake Timsah
    mollusc
    physicochemical condition
    population density
    rotifer
    salinity
    Suez Canal
    zooplankton
    Opis:
    Zooplankton composition and abundance were investigated seasonally at ten sites in Lake Timsah and the adjacent, connected western lagoon in relation to the physicochemical conditions. A total of 42 taxa (including larval stages) were identified, among them 21 species of copepods, 6 rotifers, 5 cladocerans, 1 chaetognath and 1 urochordate. Copepods represented the predominant component (77.7% of the total community), followed by rotifers, molluscs, cladocerans and (9.2, 4.7 and 3.9% respectively), while other groups collectively formed about 4.5% of the total zooplankton population. Summer was the most productive season with an average count of 40 864 individuals m−3. The dominant copepod species were Paracalanus crassirostris and Oithona nana representing 28.3 and 24.3% of the total zooplankton respectively. The total zooplankton count, including copepods, and its dominant species showed significant positive correlations with temperature, pH and total phytoplankton density. However, negative correlations were detected between densities of rotifers, and salinity and dissolved oxygen.
    Źródło:
    Oceanologia; 2011, 53, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Response of maize [Zea mays L.] to rimsulfuron under salt conditions
    Autorzy:
    Sacala, E
    Demczuk, A.
    Michalski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/56629.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    sulphonylurea
    Zea mays
    agriculture
    Titus 25 DF herbicide
    photosynthetic pigment
    herbicide
    protein
    salinity
    salt condition
    growth reduction
    rimsulfuron
    maize
    Opis:
    Investigations were carried out to determine the possible interaction between salinity (60 mmol*dm-3 NaCl) and phytotoxicity of herbicide Titus 25 DF (sulfonylurea herbicide containing active ingredient rimsulfuron). The herbicide was added to the nutrient solution at two concentrations - 1 or 100 nmol*dm-3. After 7 days of cultivation in the nutrient solution determined were the growth parameters and some biochemical compounds (photosynthetic pigments, total protein and free amino compounds content). The combined action of 1 nmol*dm-3 rimsulfuron and salt caused a reduction in plant biomass accumulation, but this reduction was due to the salt itself. In the presence of 100 nmol*dm-3 rimsulfuron, growth inhibition of maize roots was very high and salinity did not modify herbicide toxicity. However, reduction in maize shoots growth equalled the sum of the reductions caused by each particular factor applied separately (additive effect). The reduction in shoot fresh weight reached 64%. The investigated stress factors induced a significant increase in amino compounds, with the exception of maize roots grown under NaCl plus 100 nmol-dm-3 rimsulfuron. The concentration of total protein in maize roots diminished under NaCl and 100 nmol*dm-3 rimsulfuron, although in the other cases, it did not change distinctly in comparison to the control. All factors, with the exception of NaCl, induced a slight increase in protein contents in maize leaves. Stress factors did not change significantly the total chlorophyll concentration, however, carotenoid content was markedly reduced. Nevertheless, the combined action of 100 nmol*dm-3 rimsulfuron and NaCl caused a 10% increase in carotenoid content as compared to the control plants. In conclusion, salinity did not change the toxicity of the herbicide applied in low dose (1 nmol*dm-3), but it did increase herbicide toxicity at high concentration (100 nmol*dm-3) regarding the maize shoots.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2003, 72, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rotifer trophic state indices as ecosystem indicators in brackish coastal waters
    Autorzy:
    Gutkowska, A.
    Paturej, E.
    Kowalska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/49197.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    rotifer
    trophic status
    chemical parameter
    physical parameter
    salinity
    brackish water
    coastal water
    indicator species
    zooplankton
    Vistula Lagoon
    environment condition
    biological monitoring
    Źródło:
    Oceanologia; 2013, 55, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of street conditions, including saline aerosol, on growth of the Small-leaved limes
    Wpływ warunków przyulicznych, w tym aerozolu solnego, na wzrost lip drobnolistnych
    Autorzy:
    Borowski, J.
    Pstragowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/888469.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Dendrologiczne
    Tematy:
    Small-leaved lime
    Tilia cordata
    environment pollution
    lime
    plant growth
    saline aerosol
    salinity stress
    street condition
    street habitat
    street tree
    tree size
    urban tree
    Opis:
    There is increasing number of trees dying in large urban agglomerations. The problem is mostly pronounced in the case of street trees. In Polish cities, apart of pollutions generated by traffic, an important factor that causes death of trees is high salt concentration as a result of winter salt application for de-icing of streets. The aim of the study was to assess the growth of limes (Tilia cordata) planted along highly trafficked Warsaw street and exposed, among others, to salt in a form of saline aerosol. The assessment of shoot length, tree height and crown volume, based on the photographic method of the three increment assessments, showed very restrained growth of the studied limes. In the years 2006-2008 the trees performed so poorly as in similar period of 2003-2005 and grew worse than limes form natural habitats. In 2009 we even observed decrease in size of street trees as compared to 2008 which suggests both very bad condition of street habitats and the studied trees. Salt concentration measured on the surface of tree buds and shoots (EC) was higher in street trees than in trees from natural habitats, which indicates that saline aerosol is the source of sodium chloride. We observed highly diversified reactions of individual trees to the whole complex of street conditions. It is therefore recommended to select for propagation individuals from among most tolerant and vigorously growing plants (genotypes) to be used in street planting.
    Źródło:
    Rocznik Polskiego Towarzystwa Dendrologicznego; 2010, 58
    2080-4164
    2300-8326
    Pojawia się w:
    Rocznik Polskiego Towarzystwa Dendrologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kinetyka wzrostu trzech klonów wierzby wiciowej (Salix viminalis L.) w zależności od zasolenia gleb
    Growth kinetics of three clones of basket willow (Salix viminalis L.) depending on soil salinity
    Autorzy:
    Gregorczyk, A.
    Wrobel, J.
    Mikiciuk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/46644.pdf
    Data publikacji:
    2005
    Wydawca:
    Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydawnictwo PB
    Tematy:
    wierzba wiciowa
    Salix viminalis
    wzrost roslin
    kinetyka wzrostu
    warunki glebowe
    zasolenie gleb
    klony
    wierzba wiciowa Jorr
    wierzba wiciowa Bjor
    wirzba wiciowa Tora
    common osier
    plant growth
    growth kinetics
    soil condition
    soil salinity
    clone
    Opis:
    Przeprowadzono wstępne badania, dotyczące wpływu różnych dawek NaCl (poziomów zasolenia), dodawanych do podłoża glebowego na kinetykę wzrostu trzech klonów Salix viminalis L. W czasie wegetacji rośliny dwukrotnie podlewano roztworami chlorku sodu o stężeniach: 0 (kontrola); 1; 1,5; 2%. Miarą wzrostu były przyrosty długości i grubości pędów; oznaczono też suchą masę roślin. Do opisu procesów wzrostu najbardziej właściwa okazała się funkcja kwadratowa. Największą dynamiką wzrostu elongacyjnego charakteryzował się klon Bjor przy poziomie zasolenia 1%. Przy tym samym zasoleniu największe przyrosty grubości pędu miały klony Jorr i Tora. Ogólnie pod względem plonu suchej masy najbardziej tolerancyjnym na stres solny okazał się klon Jorr, a najmniej – klon Tora.
    Preliminary studies were conducted on the effects of various doses of NaCl (salinity levels) added to soil on the growth kinetics of three clones of Salix viminalis L. During vegetation the plants were treated twice with the solution of sodium chloride at the following concentrations: 0 (control); 1; 1.5; 2%. Growth was measured with increases in shoot length and thickness; dry matter was also determined. The growth process was best described with quadratic function. The highest elongation growth dynamics was noted for Bjor clone at 1% salinity level. At the same salinity the greatest stem thickness increase was observed in Jorr and Tora. As far as the dry matter yield was concerned, Jorr was found to be most tolerant to saline stress, while Tora – least tolerant.
    Źródło:
    Acta Scientiarum Polonorum. Agricultura; 2005, 04, 1
    1644-0625
    Pojawia się w:
    Acta Scientiarum Polonorum. Agricultura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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