Temat: physicochemical variation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Seasonal influence of physico-chemical parameters on phytoplankton diversity, community structure and abundance at Parangipettai coastal waters, Bay of Bengal, South East Coast of India
Autorzy:: Vajravelu, M.
Martin, Y.
Ayyappan, S.
Mayakrishnan, M.
Powiązania:: https://bibliotekanauki.pl/articles/47903.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: phytoplankton
community structure
abundance
seasonal variation
nutrient dynamics
physicochemical parameter
Parangipettai
coastal water
Bengal Bay
India coast
Źródło:: Oceanologia; 2018, 60, 2
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of interspecies physicochemical variation of grain legume seeds
Autorzy:: Rybinski, W.
Rusinek, R.
Szot, B.
Bocianowski, J.
Starzycki, M.
Powiązania:: https://bibliotekanauki.pl/articles/25147.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: interspecies variation
physicochemical variation
grain legume
seed
thickness
protein
fat
fatty acid
Opis:: The paper presents an attempt to assess the reaction of seeds to mechanical loads taking into account their geometry expressed as seed thickness and 1000 seed weight. The initial material comprised 33 genotypes of grain legume plants and included cultivars registered in the country and breeding lines that are subject to pre-registration trials. The analysis of variance revealed significant diversity of the cultivars and lines of the species studied in terms of each of the analysed trait. The highest weight of 1000 seeds were obtained for white lupine seeds and peas, the lowest for andean lupine seeds. The maximum deformation and energy were obtained for white lupine seeds, the lowest for pea seeds, the maximum force and module the lowest values were determined for narrow-leafed lupine and pea. The highest values of protein were obtained for andean and yellow lupine, a fat content for andean and white lupine. The fatty acid profile as much as 70% or more were linoleic and oleic acids. Against the background of all the species are distinguished by white lupine seeds with a high content of oleic acid and the lowest of linoleic acid, for yellow lupine were obtained the inverse ratio of the two acids.
Źródło:: International Agrophysics; 2014, 28, 4
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Phytoplankton response to changes of physicochemical variables in Lake Nasser, Egypt
Autorzy:: Hussian, A.-E. M.
Napiorkowska-Krzebietke, A.
Toufeek, M.E.F.
El-Monem, A.M.A.
Morsi, H.H.
Powiązania:: https://bibliotekanauki.pl/articles/961602.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: phytoplankton
density
physicochemical variation
nutrient
chlorophyll a
diatom
Lake Nasser
Egypt
Opis:: Seasonal and spatial changes of phytoplankton in relation to environmental variables affecting the water quality were investigated along the main channel of Lake Nasser throughout 2013. In total, 104 phytoplankton species, belonging to 7 classes, were identified. Phytoplankton assemblages were dominated by Bacillariophyceae, Cyanophyceae and Chlorophyceae, whereas Dinophyceae, Euglenophyceae, Chrysophyceae and Cryptophyceae were infrequent. Cyclotella glomerata, C. ocellata and Aulacoseira granulata represented the most abundant species among Bacillariophyceae. Cyanophyceae was dominated by Planktolyngbya limnetica and Eucapsis minuta, and Chlorophyceae by Ankistrodesmus fusiformis and Staurastrum paradoxum. The water column was thermally stratified during summer, while being mixed throughout winter. Phytoplankton features and physicochemical variables were analyzed with the principal component analysis. Electrical conductivity and water temperature were the most common factors negatively controlling phytoplankton density. Phytoplankton density was positively associated with NO3, whereas it was negatively correlated with PO4 and HCO3. Cyanophyceae were strongly adapted to the environmental variables and NO2 was limiting their growth. Chlorophyceae were more dependent on PO4 than NO3. The vertical distribution of Chl a was associated with the summer thermal stratification and its concentration increased southwards. Chl a was affected by NO2 and linked to Chlorophyceae. The regional variations of phytoplankton reflected its response to varying environmental conditions. The annual average of the trophic state index indicated eutrophic waters of Lake Nasser.
Źródło:: Journal of Elementology; 2015, 20, 4
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Physico-chemical and biological activity of hawthorn (Crataegus spp. L.) fruits in Turkey
Fizykochemiczna i biologiczna aktywność owoców głogu (Crataegus spp. L.) w Turcji
Autorzy:: Ercisli, S.
Yanar, M.
Sengul, M.
Yildiz, H.
Topdas, E.F.
Taskin, T.
Zengin, Y.
Yilmaz, K.U.
Powiązania:: https://bibliotekanauki.pl/articles/11543262.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:: physicochemical activity
biological activity
hawthorn
Crataegus
biochemical diversity
genotypic variation
fruit
fruit mass
anthocyanin
Turkey
Źródło:: Acta Scientiarum Polonorum. Hortorum Cultus; 2015, 14, 1; 83-93
1644-0692
Pojawia się w:: Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Seasonal variation in the quality parameters of milk from an extensive, small family farm
Sezonowe różnice w parametrach jakościowych mleka z tradycyjnego małego gospodarstwa rodzinnego
Autorzy:: Czyżak-Runowska, G.
Wójtowski, J.
Bielińska-Nowak, S.
Wojtczak, J.
Markiewicz-Kęszycka, M.
Powiązania:: https://bibliotekanauki.pl/articles/2624257.pdf
Data publikacji:: 2020
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: small family farm
extensive farming
milk
quality parameter
seasonal variation
physicochemical property
technological suitability
Polska
Źródło:: Acta Scientiarum Polonorum. Zootechnica; 2020, 19, 3; 63-70
1644-0714
Pojawia się w:: Acta Scientiarum Polonorum. Zootechnica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Assessment of a sheltered euhaline area of the Southeastern Bay of Biscay to sustain bivalve production in terms of phytoplankton community composition
Autorzy:: Bilbao, J.
Muniz, O.
Rodriguez, J.G.
Revilla, M.
Laza-Matinez, A.
Seoane, S.
Powiązania:: https://bibliotekanauki.pl/articles/2078991.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: phytoplankton community
phytoplankton composition
biomass
physicochemical variation
aquaculture
mussel
Biscay Bay
Opis:: This study describes the phytoplankton community in sheltered euhaline waters of the Basque coast (southeastern Bay of Biscay). Phytoplankton composition, cell size, abundance, biomass and the presence of potentially toxic taxa, together with chlorophyll a, nutrients and hydrographic and optical conditions were measured, from August 2016 to August 2017, in the Mutriku port, with the main aim of assessing the suitability of the phytoplankton community as a food resource for bivalves. The water column in Mutriku showed the typical environmental conditions of Basque marine waters, with no significant nutrient enrichment caused by anthropogenic pressures. Haptophytes represented the greatest contribution to cell abundance (31—47%), and diatoms were the dominant group in terms of biomass (52—79%), which could favour mussel growth due to their high fatty acid content. In addition, the size structure of the phytoplankton community was suitable for mussel ingestion, since the predominant cell size was 2—20 μm. Regarding toxic phytoplankton, the genera that pose a risk for human health and those that affect negatively mussel physiology and survival were considered. Altogether, ten toxic phytoplankton taxa were identified, contributing in less than 5% to the total cell abundance of Mutriku. However, median chlorophyll a concentration was low (0.5 μg L−1), reflecting the oligotrophic conditions of the area. Therefore, even if the composition of the phytoplankton community could be favourable for bivalve aquaculture, biomass values are low compared to other zones of bivalve production.
Źródło:: Oceanologia; 2021, 63, 1; 12-26
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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