发布求助
文献互助 智能选刊 最新文献

Issues of modern algology (Вопросы современной альгологии)最新文献

筛选
英文 中文
Phytoplankton diatoms in the south-western part of the Laptev Sea in august 2017 2017年8月拉普捷夫海西南部浮游植物硅藻
Issues of modern algology (Вопросы современной альгологии) Pub Date : 1900-01-01 DOI: 10.33624/2311-0147-2019-2(20)-111-115
A. A. Georgiev, M. L. Georgieva
{"title":"Phytoplankton diatoms in the south-western part of the Laptev Sea in august 2017","authors":"A. A. Georgiev, M. L. Georgieva","doi":"10.33624/2311-0147-2019-2(20)-111-115","DOIUrl":"https://doi.org/10.33624/2311-0147-2019-2(20)-111-115","url":null,"abstract":"Diatoms of phytoplankton from northern seas of Russia remain poorly studied, which is primarily due to the inaccessibility of the region. This report presents data on the diversity of diatoms, obtained by analyzing phytoplankton samples from the southwestern part of the Laptev Sea in August 2017. In total, 20 species of diatoms from 12 genera were identified, among which the richest by species is the genus Chaetoceros (8 species).","PeriodicalId":305989,"journal":{"name":"Issues of modern algology (Вопросы современной альгологии)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126421734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modern views on the diversity and taxonomy of Euglenoids. Current state and challenges for the future in the field of diversity, ecology, and biogeography of photosynthetic euglenoids 菊科植物多样性及分类的现代观点。光合拟藻类多样性、生态学和生物地理学研究的现状与挑战
Issues of modern algology (Вопросы современной альгологии) Pub Date : 1900-01-01 DOI: 10.33624/2311-0147-2021-2(26)-114-123
Josef Juráň
{"title":"Modern views on the diversity and taxonomy of Euglenoids. Current state and challenges for the future in the field of diversity, ecology, and biogeography of photosynthetic euglenoids","authors":"Josef Juráň","doi":"10.33624/2311-0147-2021-2(26)-114-123","DOIUrl":"https://doi.org/10.33624/2311-0147-2021-2(26)-114-123","url":null,"abstract":"Photosynthetic euglenoids represent a large group of flagellates, which could be found in most freshwater, marine and brackish habitats, but also in extreme environments with low pH or in moist soil. The existence of this group has been known for a relatively long led to the description of wide morphological variability. In my contribution, I briefly summarize the possible causes of this morphological variability (effect of the environment and phenotypic plasticity during ontogenesis) and current knowledge about the taxonomy of these protist organisms, showing the most recent changes and descriptions of new genera.","PeriodicalId":305989,"journal":{"name":"Issues of modern algology (Вопросы современной альгологии)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121299723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ecology and metabolic activity of cyanobacteria in large different types of lowland reservoirs in the European part of Russia 俄罗斯欧洲部分大型不同类型低地水库中蓝藻的生态学和代谢活性
Issues of modern algology (Вопросы современной альгологии) Pub Date : 1900-01-01 DOI: 10.33624/2311-0147-2021-2(26)-29-37
L. Korneva, V. Solovyova, S. Sidelev, E. Chernova, Yana V. Russkich
{"title":"Ecology and metabolic activity of cyanobacteria in large different types of lowland reservoirs in the European part of Russia","authors":"L. Korneva, V. Solovyova, S. Sidelev, E. Chernova, Yana V. Russkich","doi":"10.33624/2311-0147-2021-2(26)-29-37","DOIUrl":"https://doi.org/10.33624/2311-0147-2021-2(26)-29-37","url":null,"abstract":"A comparative of the species composition and ecological-geographical characteristics of cyanobacteria plankton of 13 reservoirs of the Volga-Kama cascade and the Don (Sheksna, Ivankovo, Uglich, Rybinsk, Gorky, Cheboksary, Kuibyshev, Saratov, Volgograd, Kama, Votkinsk, Nizhnekamsk and Tsimlyansk reservoirs) is analysed. An assessment of the change in the distribution of cyanobacteria biomass in a latitudinal gradient along the Volga cascade is presented. The seasonal and long-term (1954–2016) dynamics of the abundance, biomass and the ratio of functional groups of cyanobacteria in the Rybinsk Reservoir, the second largest in the cascade of Volga reservoirs, are analyzed. A positive long-term trend of abundance and diversity of cyanobacteria and the leveling of their biomass between reservoirs along a cascade in recent years has been established. An increase in the abundance and diversity of nonheterocystous species was established in the direction from the Upper to the Lower Volga and during the long-term succession of phytoplankton of the Rybinsk Reservoir. This is associated with an increase of water mineralization. Based on current research in the 2010s of the Volga, Kama and Don cascade reservoirs, 14 variants of microcystin structures were identified, the diversity of which depended on the composition of the producing species. Using PCR analysis, the main producers of microcystins (Microcystis and Dolichospermum) were identified. Cyanobacteria Cuspidothrix issatschenkoi and/or Raphidiopsis mediterranea have been identified as possible producers of neurotoxic anatoxin-a in the Tsimlyansk Reservoir. It was shown that water temperature and nitrogen were the greatest importance for development of microcystin-producing species of cyanobacteria.","PeriodicalId":305989,"journal":{"name":"Issues of modern algology (Вопросы современной альгологии)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122552647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Influence of light on microalgae growth in continuous culture of low density 光照对低密度连续培养微藻生长的影响
Issues of modern algology (Вопросы современной альгологии) Pub Date : 1900-01-01 DOI: 10.33624/2311-0147-2019-1(19)-1-7
R. P. Trenkenshu
{"title":"Influence of light on microalgae growth in continuous culture of low density","authors":"R. P. Trenkenshu","doi":"10.33624/2311-0147-2019-1(19)-1-7","DOIUrl":"https://doi.org/10.33624/2311-0147-2019-1(19)-1-7","url":null,"abstract":"A mathematical model of the dependence of the specific growth rate of microalgae on the light intensity for a continuous culture of low optical density is proposed. In the basis of the mechanism of light-limited growth is the thesis on photosynthesis having light and dark phases. The product of the first phase is carbohydrates, which are used in the dark phase as a source of energy and carbon skeletons for the synthesis of all structural components of cells .Rates of the processes are described by linear splines. The equations describing the dependence of the specific growth rate on the intensity of the acting light are obtained.","PeriodicalId":305989,"journal":{"name":"Issues of modern algology (Вопросы современной альгологии)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121601173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
The composition of diatoms in epiphyton of the Shchugor River (Urals, Russia) 俄罗斯乌拉尔Shchugor河附生植物中硅藻的组成
Issues of modern algology (Вопросы современной альгологии) Pub Date : 1900-01-01 DOI: 10.33624/2311-0147-2019-2(20)-142-145
A. Stenina, I. Sterlyagova
{"title":"The composition of diatoms in epiphyton of the Shchugor River (Urals, Russia)","authors":"A. Stenina, I. Sterlyagova","doi":"10.33624/2311-0147-2019-2(20)-142-145","DOIUrl":"https://doi.org/10.33624/2311-0147-2019-2(20)-142-145","url":null,"abstract":"In epiphyton of the Shchugor River 143 species (with varieties and forms) of diatoms from 49 genera, 21 families were identified. Families Fragilariaceae Achnanthidiaceae, Gomphonemataceae, Naviculaceae, Bacillariaceae, Eunotiaceae include 10 and more taxa. Genera Gomphonema (11), Eunotia, Nitzschia (10 species) are predominate. Diatoms on mosses are the most abundant and diverse. Common species on all macrophytes are Achnanthidium minutissimum (Kützing) Czarnecki, Cocconeis placentula Ehrenberg, Encyonema minutum (Hilse) Mann, Meridion circulare (Gréville) Agardh, Tabellaria flocculosa (Roth) Kützing, Ulnaria ulna (Nitzsch) Compère.","PeriodicalId":305989,"journal":{"name":"Issues of modern algology (Вопросы современной альгологии)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127574555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new genus of soil green microalgae Edaphochloris gen. nov. (Chlorellaceae, Trebouxiophyceae) 土壤绿色微藻Edaphochloris gen. 11 .一新属(小球藻科，微藻科)
Issues of modern algology (Вопросы современной альгологии) Pub Date : 1900-01-01 DOI: 10.33624/2311-0147-2022-1(28)-94-101
A. Temraleeva, E. Krivina, O. Boldina
{"title":"A new genus of soil green microalgae Edaphochloris gen. nov. (Chlorellaceae, Trebouxiophyceae)","authors":"A. Temraleeva, E. Krivina, O. Boldina","doi":"10.33624/2311-0147-2022-1(28)-94-101","DOIUrl":"https://doi.org/10.33624/2311-0147-2022-1(28)-94-101","url":null,"abstract":"The problem of studying the species diversity of small single-celled green coccoid microalgae (Chlorophyta) is still relevant, since their simple and uniform cellular morphology makes it extremely difficult to correctly identify them. It is now generally accepted that the best approach for creating a new, more natural classification of “little green balls” is an approach that combines morphological, ecological, physiological and molecular phylogenetic methods. Strains ACSSI 104 and ACSSI 144 were isolated from solonetz and chestnut soil (Volgograd region, Russia). Their cells have a typical Nannochloris-like morphology: single spherical or subspherical cells, chloroplast single, parietal, cup-shaped, without pyrenoid, but with starch grains in it. Old cells accumulate numerous oil droplets in cytoplasm. Reproduction by 2−4 autospores. Autospores of both strains are equal size and exhibit liberation by rupture of sporangium cell wall. Zoospores and sexual reproduction not observed. Both strains are part of independent cluster closely related to genera Marvania, Pumiliosphaera, Nannochloris and Gloeotila. A comparative analysis of morphological (cell size, chloroplast type) and ultrastructural characteristics (structure of cell wall and lamellar system), features of reproduction (asexual reproduction by autospores only) and habitat (soil) with other members of the Nannochloris-clade, as well as results of analysis of 18S rRNA gene and ITS2 secondary structure of the studied strains, allowed us to propose a new genus – Edaphochloris with the type species – E. andreyevae. The report was prepared based on the materials of the V All-Russian Scientific Conference with international participation \"Algae: problems of systematics, ecology and use in monitoring\", 2021.","PeriodicalId":305989,"journal":{"name":"Issues of modern algology (Вопросы современной альгологии)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127583603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Abundance dynamics and size distribution of cells of the toxicogenic species from the genus Pseudo-nitzschia near the coast of Karadag (next to the biological station) 卡拉达格海岸(生物站旁)伪尼奇亚属有毒物种的丰度动态和细胞大小分布
Issues of modern algology (Вопросы современной альгологии) Pub Date : 1900-01-01 DOI: 10.33624/2311-0147-2019-2(20)-64-68
Svetlana L. Polykova, N. Davidovich
{"title":"Abundance dynamics and size distribution of cells of the toxicogenic species from the genus Pseudo-nitzschia near the coast of Karadag (next to the biological station)","authors":"Svetlana L. Polykova, N. Davidovich","doi":"10.33624/2311-0147-2019-2(20)-64-68","DOIUrl":"https://doi.org/10.33624/2311-0147-2019-2(20)-64-68","url":null,"abstract":"Monitoring of the number of cells of toxicogenic species Pseudo-nitzschia calliantha and P. pungens carried out during one year with weekly sampling in the costal zone of the Karadag reserve. Temporary «bursts» of numbers were revealed. The size characteristics of populations of P. calliantha and P. pungens species were studied. It was determined at what stage of the life cycle is the majority of cells in the population at different times of the year.","PeriodicalId":305989,"journal":{"name":"Issues of modern algology (Вопросы современной альгологии)","volume":"48 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132655264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Holocene diatom assemblages from Dunderbukhta sediments, West Svalbard 西斯瓦尔巴群岛Dunderbukhta沉积物的全新世硅藻组合
Issues of modern algology (Вопросы современной альгологии) Pub Date : 1900-01-01 DOI: 10.33624/2311-0147-2019-2(20)-242-245
Ksenya V. Poleshchuk, Z. Pushina, S. Verkulich
{"title":"Holocene diatom assemblages from Dunderbukhta sediments, West Svalbard","authors":"Ksenya V. Poleshchuk, Z. Pushina, S. Verkulich","doi":"10.33624/2311-0147-2019-2(20)-242-245","DOIUrl":"https://doi.org/10.33624/2311-0147-2019-2(20)-242-245","url":null,"abstract":"The diatom analysis results of sediment samples from Dunderbukta area (Wedel Jarlsberg Land, West Svalbard) are presented in this paper. The diatom flora consists of four ecological groups, which ratio indicates three ecological zones. These zones show environmental changes of the area in early–middle Holocene that is demonstrating periods of regression and temperature trends.","PeriodicalId":305989,"journal":{"name":"Issues of modern algology (Вопросы современной альгологии)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132771843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanisms of regulation of the number of cells in the cell chain of diatoms 硅藻细胞链中细胞数量的调节机制
Issues of modern algology (Вопросы современной альгологии) Pub Date : 1900-01-01 DOI: 10.33624/2311-0147-2019-1(19)-8-22
A. Fedorov, A. Lifanchuk
{"title":"Mechanisms of regulation of the number of cells in the cell chain of diatoms","authors":"A. Fedorov, A. Lifanchuk","doi":"10.33624/2311-0147-2019-1(19)-8-22","DOIUrl":"https://doi.org/10.33624/2311-0147-2019-1(19)-8-22","url":null,"abstract":"We proposed hypothesis that describes the mechanism of formation and disintegration of cell chains, according to which the number of cells in a chain is determined by the difference in the rates of cell division and the separation of chains into individual cells, and the maximum number of cells in the chain is achieved at the highest division rate. Experiments showed that the addition of phosphorus stimulates the formation of longer chains. We developed a simple mathematical model of the dynamics of the number of cells in cell chains.","PeriodicalId":305989,"journal":{"name":"Issues of modern algology (Вопросы современной альгологии)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114248320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evenness of species abundance in the littoral communities of the Murman 摩尔曼沿岸群落物种丰度的均匀性
Issues of modern algology (Вопросы современной альгологии) Pub Date : 1900-01-01 DOI: 10.33624/2311-0147-2021-2(26)-38-45
S. Malavenda
{"title":"Evenness of species abundance in the littoral communities of the Murman","authors":"S. Malavenda","doi":"10.33624/2311-0147-2021-2(26)-38-45","DOIUrl":"https://doi.org/10.33624/2311-0147-2021-2(26)-38-45","url":null,"abstract":"The spatial and species structure of fucus algae communities in littoral phytocenoses of Eastern Murmansk is studied. This is the North-Eastern border of Fucus communities. 87 species of macrophyte algae were identified in the communities. The variation of species diversity as an indicator of community structure is determined depending on the leading abiotic factors – salinity, surf content, and substrate type. The species diversity of macrophyte algae in the littoral of the Eastern Murmansk is determined primarily by surf activity. Under similar hydrological conditions, soil features determine the density of thickets and, consequently, the number of species found in a single sample. Salinity fluctuations at which it drops below 15‰ are critical for most species and fundamentally change the structure of communities. The highest values of the indices of species diversity were observed in the littoral areas of the coast that are poorly protected from the surf.","PeriodicalId":305989,"journal":{"name":"Issues of modern algology (Вопросы современной альгологии)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117120943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信