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Wyszukujesz frazę "nutrient transport" wg kryterium: Temat

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    Tytuł:
    Average nutrient and chlorophyll distributions in the Western Mediterranean: RADMED project
    Autorzy:
    Garcia-Martinez, M.C.
    Vargaz-Yanez, M.
    Moya, F.
    Santiago, R.
    Munoz, M.
    Reul, A.
    Ramirez, T.
    Balbin, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/48926.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    climate change
    water column
    nutrient concentration
    nutrient transport
    chlorophyll
    Mediterranean Sea
    RADMED project
    Źródło:
    Oceanologia; 2019, 61, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chemistry of the freshwater of the Fugleberget drainage basin
    Autorzy:
    Krzyszowska, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/2057324.pdf
    Data publikacji:
    1985
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    Spitsbergen
    nutrient transport
    role of birds in the ecosystem
    Źródło:
    Polish Polar Research; 1985, 6, 3; 341-347
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation of nutrient transport from different depths during an upwelling event in the Gulf of Finland
    Autorzy:
    Vali, G.
    Zhurbas, V.
    Laanemets, J.
    Elken, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/48984.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Baltic Sea
    ecohydrodynamic model
    Finland Gulf
    nutrient transport
    phosphorus
    phytoplankton biomass
    princeton ocean model
    remote sensing
    simulation
    upwelling
    water transport
    wind
    wind stress
    Opis:
    Numerical simulation experiments with a high-resolution circulation model were carried out to study nutrient transport from different depths to the surface 10-m layer during an upwelling event along the northern coast of the Gulf of Finland in July 1999. The initial nutrient distribution is based on field measurements performed in the north-western part of the Gulf. Wind forcing covering the period of the upwelling along the northern coast was turned through 180◦ to simulate an upwelling along the southern coast. The simulation results showed that the main phosphorus transport to the upper 10-m layer occurred from depths shallower than 30 m for the upwelling events along both the northern and the southern coasts. Nitrogen transport to the upper 10-m layer was the largest from depths of 40–55 m for the upwelling along the northern and 40–65 m for the upwelling along the southern coast. Simulated cumulative volume transports to the upper 10-m layer from different depths showed that the contribution from deeper layers was larger in the case of the upwelling along the southern coast. The reduction of wind stress had a bigger influence on water transport from the deeper layers.
    Źródło:
    Oceanologia; 2011, 53, (1-TI)
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rola krzemu w procesie eutrofizacji wód na przykładzie zbiorników Solina i Myczkowce
    The Role of Silicon in the Process of Eutrophication of the Waters – Solina and Myczkowce Reservoirs Case Study
    Autorzy:
    Koszelnik, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1819150.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    proces eutrofizacji wód
    rola krzemu
    nutrient limitation
    dissolved silicate
    retention
    nitrogen
    phosphorus
    lake
    transport
    sediments
    complex
    river
    Opis:
    This paper reports on studies conducted during 2005–2006 years in the ecosystem of the Solina-Myczkowce mountain complex of mesotrophic reservoirs on the San River, SE Poland. The goal of the present study has been to analyse the functioning of the reservoirs as a dissolved silicon sink especially whether silicon assumes a limiting role where the biological productivity of reservoirs waters is concerned. Silicon is one of the biosphere’s most abundant elements, and one that – in the form of dissolved silica – serves as a very important nutrient playing a major role in the functioning of marine, coastal and inland waters. Investigations indicate that reservoirs are major sinks for the dissolved silica in a river system and that unfavorable changes in water chemistry downstream may ensue where (as is usually the case), the water discharged from a reservoir is poorer in Si than that supplied to it. The noted Si depletion in both the analysed reservoirs influenced growth of non-siliceous algae expressed in terms of chl a. Siliceous algal growth is usually observed there during spring. I suppose that the first chl a maximum in the case of the Solina Reservoir, and the only maximum in the Myczkowce Reservoir, result from the growth of both siliceous and green algae. The next increase in chl a – observed only in the Solina Reservoir – may result from the presence of the cyanobacteria often observed in warm lakes at the end of summer. Their absence from Myczkowce reflects the low temperature of that reservoir’s water, this being supplied from the hypolimnion of the upper one. These observations are confirmed in relationships between mean measured concentrations of Si and mean concentrations of chl a in the euphotic zone of the two reservoirs. Observed summer depletion of the silicate accelerates the growth of phytoplankton exponentially, especially in the case of the upper reservoir.
    Źródło:
    Rocznik Ochrona Środowiska; 2013, Tom 15, cz. 3; 2218-2231
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the phosphorus content in a nutrient solution on the expression of genes encoding phosphorus transporters in tomato grown on different substrates
    Autorzy:
    Winska-Krysiak, M.
    Kowalska, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/14131.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    fertigation
    gene expression
    growing medium
    growth stage
    phosphorus transport
    plant
    phosphorus content
    nutrient solution
    phosphorus transporter
    tomato
    different substrate
    Opis:
    Effects of the phosphorus content in a nutrient solution (15 or 50 mg P dm-3), growing substrate (rockwool or coconut fiber) and the plant growth stage (for roots: 71 or 113 days after transplanting DAT; for leaves: 71 or 92 DAT) on the chemical composition of roots, the phosphorus content in leaves and the expression of genes encoding proteins involved in the transport of phosphorus from the medium to the plant were investigated in tomato cv. Admiro F1 grown in a foil tunnel. A fertigation system without recirculation was used. Regardless of the plant age and growing substrate, tomatoes fertilized with a nutrient solution containing 50 mg P dm-3 had more phosphorus, iron, boron and copper in roots and more phosphorus in leaves. Irrespective of the stage of plant growth and phosphorus level in the medium, the content of almost all macro- and microelements was higher in roots of plants grown in rockwool than in coconut fiber. The stage of plant growth significantly affected the mineral composition of roots as well as the P content in tomato leaves. More phosphorus was stored in roots of younger plants, whereas the phosphorus content was lower in younger than in older leaves. Our analysis of the gene expression showed that transporters encoded by LePT1-LePT4 were involved in phosphate nutrition. Expression of the genes was generally (except LePT4) higher in plants treated by the solution containing 15 mg P dm-3 than in plants treated by 50 mg P dm-3. The expression of genes LePT2, LePT3 in roots of older plants (113 DAT) was generally higher than in young plants.
    Źródło:
    Journal of Elementology; 2015, 20, 2
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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