scholarly journals МОНИТОРИНГОВАЯ ОЦЕНКА УРБАНОЗЁМОВ МАЛЫХ ГОРОДОВ БРЯНСКОЙ ОБЛАСТИ

2019 ◽  
Vol 11 (1) ◽  
pp. 90
Author(s):  
Elena Vasylyevna Borzdyko ◽  
Marina Vasilievna Avramenko ◽  
Igor Vladimirovich Moskalenko ◽  
Lydia Nikolaevna Anishchenko
Keyword(s):  
Nostoc Commune ◽  
Microcoleus Vaginatus

Впервые для Брянской области (Нечерноземье РФ) создана мониторинговая база по эколого-химическим и альгологическим показателям почв малых городов, различающихся численностью населения и развитием промышленного производства. Использовались маршрутные методы, методы химического и альгологического исследования почв. Общее состояние урбанозёмов оценивали по индексу Zс.В почвах малых городов староосвоенного региона – городе Карачеве, Новозыбкове, Унече, Фокино – максимальное валовое содержание зарегистрировано для свинца, меди и цинка. Значения индекса Zс изменяется от 10 до 56, что свидетельствует о наличии зон с допустимым уровнем химического загрязнения, умеренно – опасным, высоко опасным загрязнением. В исследуемых пробах почв содержание тяжёлых металлов выявляет преобладание допустимого и умеренно-опасного уровня загрязнения. В городе Фокино преобладают зоны с высоко-опасным и умеренным загрязнением по индексу Zс, что свидетельствует о значительном влиянии крупного химического производства на почвы в малом промышленном городе.Для малых городов Брянской области впервые составлена почвенно-­альгологическая база, как отражение условий, имеющихся в верхних почвенных горизонтах. Для четырёх малых городов обнаружены 29 видов почвенных водорослей из пяти отделов. В антропогенных местообитаний особым разнообразием отличаются отделы Cyanophyta (порядок Nostocales, Oscillatoriales), отдел Chlorophyta (порядок Chlorococcales), малой видовой представленностью отделов Xantophyta, Bacillariophyta. В качестве биоиндикаторов могут рассматриваться доминанты в почвах первой и второй группы (Zc менее 16, от 16 до 32) Cylindrospermum muscicola, Nostoc commune, Phormidium autumnale . В наиболее загрязненных почвах (Zc от 32 до 128) преобладают виды Chlorococcum sp., Microcoleus vaginatus, Euglena viridis, Nostoc commune. Полученные результаты – основа биомониторинговых и экоаналитических исследований урбанозёмов малых городов.

Cyanoprokaryotes of the west part of Oscar II Land, West Spitsbergen Island, Spitsbergen archipelago

2017 ◽  
Vol 7 (1) ◽  
pp. 94-108 ◽  
Author(s):  
Denis Davydov
Keyword(s):  
Nostoc Commune ◽  
Svalbard Archipelago ◽  
Microcoleus Vaginatus ◽  
New Information ◽  
Geological Conditions ◽  
West Part ◽  
Wet Rocks ◽  
Almost All ◽  
West Spitsbergen ◽  
First Time

The present study provides new information about the diversity of freshwater and terrestrial cyanoprokaryotes of the western part of the Oscar II Land, Spitsbergen (Svalbard) archipelago. Altogether, and 51 taxa were found in different habitats (29 species was found on wet rocks, 21 on the seepages, 18 on the lakes, 11 on the moss tundra), mainly in wet ones. Nostoc commune, Gloeocapsa kuetzingiana, Microcoleus autumnalis, and Microcoleus vaginatus dominated almost all types of habitats. Aphanocapsa rivularis and Woronichinia karelica are reported for the first time for Spitsbergen flora. The studied flora is most similar to the flora of the vicinity of settlement Pyramiden. Since all these areas are dominated by carbonate rocks, it can assume that this might be due to the similarity of the geological conditions. In general, the cyanobacterial (cyanoprokaryotes) flora of western part of the Oscar II Land includes widespread, frequent and typical Spitsbergen species.

Exemplar Abstract for Nostoc commune McNeill et al. 2006.

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Nostoc Commune

scholarly journals Nostoc commune UTEX 584 gene expressing indole phosphate hydrolase activity in Escherichia coli.

1989 ◽  
Vol 171 (2) ◽  
pp. 708-713 ◽  
Author(s):  
W Q Xie ◽  
B A Whitton ◽  
J W Simon ◽  
K Jäger ◽  
D Reed ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Hydrolase Activity ◽  
Nostoc Commune ◽  
Gene Expressing

scholarly journals New discovery of anti-ulcerative colitis active ingredients of Nostoc commune: p-Hydroxy benzaldehyde

2021 ◽  
Vol 77 ◽  
pp. 104327
Author(s):  
Xiaotian Xu ◽  
Chengqiong Wei ◽  
Yingying Yang ◽  
Meng Liu ◽  
Ailin Luo ◽  
...  
Keyword(s):  
Ulcerative Colitis ◽  
Active Ingredients ◽  
Nostoc Commune ◽  
New Discovery

scholarly journals A taxonomic account on the phytoplankton of a pond receiving textile industrial effluents

1970 ◽  
Vol 15 (2) ◽  
pp. 129-139
Author(s):  
Z.N. Tahmida Begum
Keyword(s):  
Industrial Effluents ◽  
Nostoc Commune ◽  
Ankistrodesmus Falcatus ◽  
Plant Taxon ◽  
Textile Industries ◽  
Anabaena Circinalis

Phytoplankton from four stations of a large pond receiving effluents from two textile industries have been investigated. A total of 69 taxa were identified out of which 48 belonged to Chlorophyceae followed by 17 to Cyanophyceae. One species from each of Chrysophyceae, Xanthophyceae, Cryptophyceae and Dinophyceae were also recorded. Oscillatoria limnetica Lemm., Anabaena circinalis Rabenh. ex Born. et Flah., Nostoc commune Vaucher ex Born. et Flah. Ankistrodesmus falcatus var. mirabilis (West & West) Lemm. and Scendesmus spp. were found dominant in all the stations.Keywords: Industrial effluents, Phytoplankton, Taxonomy DOI: 10.3329/bjpt.v15i2.1742 Bangladesh J. Plant Taxon. 15(2): 129-139, 2008 (December)

scholarly journals Characterization of the chemical diversity of glycosylated mycosporine-like amino acids in the terrestrial cyanobacterium Nostoc commune

2015 ◽  
Vol 142 ◽  
pp. 154-168 ◽  
Author(s):  
Ehsan Nazifi ◽  
Naoki Wada ◽  
Tomoya Asano ◽  
Takumi Nishiuchi ◽  
Yoshiaki Iwamuro ◽  
...  
Keyword(s):  
Amino Acids ◽  
Chemical Diversity ◽  
Nostoc Commune

Nitrogen fixation and photosynthesis in high arctic forms of Nostoc commune

1994 ◽  
Vol 72 (7) ◽  
pp. 940-945 ◽  
Author(s):  
R. Lennihan ◽  
D. M. Chapin ◽  
L. G. Dickson
Keyword(s):  
Nitrogen Fixation ◽  
Acetylene Reduction ◽  
Terrestrial Ecosystems ◽  
Growing Season ◽  
High Arctic ◽  
Colony Morphology ◽  
Nostoc Commune ◽  
Devon Island ◽  
Low Levels ◽  
Temperature Optima

Nostoc commune, a colonial cyanobacterium, has been suggested as an important contributor of nitrogen to terrestrial ecosystems in the Canadian High Arctic, yet little is known about the ecophysiology of this organism in arctic environments. This study focused on the physiological performance of macroscopic colonies of N. commune found on Devon Island, N.W.T. The objectives were to examine the influence of temperature, colony morphology, and seasonal phenology on nitrogen fixation rates and the effects of light and temperature on photosynthesis. Maximum rates of acetylene reduction in N. commune (2119 nmol C2H4∙g−1∙h−1) were higher than those previously recorded for arctic N. commune but lower than values reported for temperate poulations. Depending on the time of the growing season, the temperature optimum for acetylene reduction varied from 15 °C to greater than 20 °C. Photosynthetic temperature optima did not occur below 20–25 °C (the highest temperatures measured). Light saturation of photosynthesis was reached at low levels of irradiance (100–150 μmol∙m−2∙s−1 PPFD). Acetylene reduction rates varied strongly with colony morphology. Thin, fragile, flattened colonies had higher rates than thicker, more resilient, flattened colonies or spherical colonies. Cold post-thaw temperatures appeared to delay the recovery of maximum nitrogen fixation rates for 2–3 weeks following the onset of the growing season. Compared with two other species of cyanobacteria present on Truelove Lowland (Gloeocapsa alpina and Gleotrichia sp.), N. commune had higher rates of nitrogen fixation. Key words: Nostoc commune, cyanobacteria, High Arctic, nitrogen fixation, photosynthesis.

scholarly journals Sobre la presencia de Nostoc commune var. flagelliforme (Nostocaceae, Cyanophyceae) en suelos arcillosos de regiones áridas del sureste español.

2010 ◽  
Vol 35 ◽  
pp. 156-161
Author(s):  
Marina Aboal ◽  
José Carlos Cristóbal ◽  
José Pedro Marín-Murcia
Keyword(s):  
Arid Regions ◽  
Clay Soils ◽  
Nostoc Commune ◽  
Southeastern Spain

About the presence of Nostoc commune var. flagelliforme (Nostocaceae, Cyanophyceae) on clay soils from arid regions of south east SpainPalabras clave. Cyanophyceae, Nostoc, distribución, ecología, morfología, regiones áridas, SE España.Keywords. Cyanophyceae, Nostoc, distribution, ecology, morphology, arid regions, Southeastern Spain.

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