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Journal articles on the topic 'Fragilariophyceae'

Author: Grafiati

Published: 6 June 2025

Last updated: 16 July 2025

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1

Stepanova, V. A., and R. M. Gogorev. "Emendation of Fragilariophyceae classification (Bacillariophyta)." Novosti sistematiki nizshikh rastenii 49 (2015): 75–91. http://dx.doi.org/10.31111/nsnr/2015.49.75.

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An historical review of some approaches to the classification of diatoms is presented. The class Fragilariophyceae was described by F. Round et al. (1990) and consisted of 54 genera of araphid diatoms. Over the past 25 years, 43 genera and two families within the class have been described. The systematic position of the family Plagiogrammaceae in the class of araphid diatoms was based on phylogenetic molecular studies. According to these data and unique morphological features, we propose a new order, Plagiogrammales ord. nov., with the type genus Plagiogramma. The name of the order Protoraphid

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2

Ferrari, Fernanda, and Thelma Alvim Veiga Ludwig. "Coscinodiscophyceae, Fragilariophyceae e Bacillariophyceae (Achnanthales) dos rios Ivaí, São João e dos Patos, bacia hidrográfica do rio Ivaí, município de Prudentópolis, PR, Brasil." Acta Botanica Brasilica 21, no. 2 (2007): 421–41. http://dx.doi.org/10.1590/s0102-33062007000200016.

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Realizou-se o levantamento florístico das Coscinodiscophyceae, Fragilariophyceae e Bacillariophyceae (Achnanthales) dos rios Ivaí, São João e dos Patos, pertencentes à bacia hidrográfica do rio Ivaí, município de Prudentópolis, Paraná. Quarenta e uma amostras foram coletadas em março, junho e julho/2002 e janeiro/2003, e analisadas. As coletas fitoplanctônicas foram feitas através de arrasto superficial com rede de plâncton (25 µm) e as perifíticas através da coleta de porções submersas de macrófitas aquáticas, rochas, cascalho, sedimento ou substrato arenoso. Foram identificados, nove táxons

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3

Morales, Eduardo A. "Punctastriata altera sp. nov. (Bacillariophyta, Fragilariophyceae), a diatom from the United States of America." Phytotaxa 516, no. 3 (2021): 296–300. https://doi.org/10.11646/phytotaxa.516.3.9.

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Morales, Eduardo A. (2021): Punctastriata altera sp. nov. (Bacillariophyta, Fragilariophyceae), a diatom from the United States of America. Phytotaxa 516 (3): 296-300, DOI: 10.11646/phytotaxa.516.3.9, URL: http://dx.doi.org/10.11646/phytotaxa.516.3.9

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4

Cristina, Delgado, Helena Novais M., Blanco Saúl, and F.P. Almeida Salomé. "Fragilaria rinoi sp. nov. (Fragilariales, Fragilariophyceae) from periphytic river samples in Central Portugal." European Journal of Taxonomy 248 (December 31, 2016): 1–16. https://doi.org/10.5852/ejt.2016.248.

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Cristina Delgado, M. Helena Novais, Saúl Blanco, Salomé F.P. Almeida (2016): Fragilaria rinoi sp. nov. (Fragilariales, Fragilariophyceae) from periphytic river samples in Central Portugal. European Journal of Taxonomy 248: 1-16, DOI: 10.5852/ejt.2016.248

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5

Al-Handal, Adil Y., J.P. Kociolek, and D.S. Abdullah. "Williamsella iraqiensis sp. nov., a new diatom (Bacillariophyta, Fragilariophyceae) from Sawa Lake, South Iraq." Phytotaxa 244, no. 3 (2016): 289–97. https://doi.org/10.11646/phytotaxa.244.3.5.

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Al-Handal, Adil Y., Kociolek, J.P., Abdullah, D.S. (2016): Williamsella iraqiensis sp. nov., a new diatom (Bacillariophyta, Fragilariophyceae) from Sawa Lake, South Iraq. Phytotaxa 244 (3): 289-297, DOI: 10.11646/phytotaxa.244.3.5, URL: http://dx.doi.org/10.11646/phytotaxa.244.3.5

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6

Oa.Morales, Maria Helena Novais, María Luján García, Nora I. Maidana, and María Manuela Morais. "A new species of Punctastriata (Bacillariophyta, Fragilariophyceae) from temporary streams in southern Portugal." Phytotaxa 507, no. 3 (2021): 261–65. https://doi.org/10.11646/phytotaxa.507.3.3.

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Oa.Morales, Novais, Maria Helena, García, María Luján, Maidana, Nora I., Morais, María Manuela (2021): A new species of Punctastriata (Bacillariophyta, Fragilariophyceae) from temporary streams in southern Portugal. Phytotaxa 507 (3): 261-265, DOI: 10.11646/phytotaxa.507.3.3, URL: http://dx.doi.org/10.11646/phytotaxa.507.3.3

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7

Almeida, Pryscilla D., Eduardo A. Morales, Carlos E. Wetzel, Luc Ector, and Denise C. Bicudo. "Two new diatoms in the genus Fragilaria Lyngbye (Fragilariophyceae) from tropical reservoirs in Brazil and comparison with type material of F. tenera." Phytotaxa 246, no. 3 (2016): 163–83. https://doi.org/10.11646/phytotaxa.246.3.1.

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Almeida, Pryscilla D., Morales, Eduardo A., Wetzel, Carlos E., Ector, Luc, Bicudo, Denise C. (2016): Two new diatoms in the genus Fragilaria Lyngbye (Fragilariophyceae) from tropical reservoirs in Brazil and comparison with type material of F. tenera. Phytotaxa 246 (3): 163-183, DOI: 10.11646/phytotaxa.246.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.246.3.1

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8

Gueye Madiop. "Araphid pennate diatoms of Ngor (Dakar, Senegal)." GSC Biological and Pharmaceutical Sciences 19, no. 3 (2022): 196–203. http://dx.doi.org/10.30574/gscbps.2022.19.3.0237.

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The present study provides the first list of marine araphid pennate diatoms from Ngor (Senegal). A total of 18 taxa belonging to 9 genera, 9 families, and 8 orders of Fragilariophyceae Class were described and identified by light microscopy in Ngor’s waters between July 2009 and November 2011. All these taxa are new for the microflora of Ngor.

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9

О.П., БАЖЕНОВА, ШКИЛЕВ Т.Э., ГЛУЩЕНКО А.М., ГУЛЬЧЕНКО Я.И. та КУЛИКОВСКИЙ М.С. "ДИАТОМОВЫЕ ВОДОРОСЛИ (FRAGILARIOPHYCEAE) В ПЛАНКТОНЕ СРЕДНЕГО ТЕЧЕНИЯ РЕКИ ИРТЫШ". Ботанический журнал 102, № 7 (2017): 901–8. http://dx.doi.org/10.1134/s0006813617070031.

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10

Gueye, Madiop. "Araphid pennate diatoms of Ngor (Dakar, Senegal)." GSC Biological and Pharmaceutical Sciences 19, no. 3 (2022): 196–203. https://doi.org/10.5281/zenodo.6848881.

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The present study provides the first list of marine araphid pennate diatoms from Ngor (Senegal). A total of 18 taxa belonging to 9 genera, 9 families, and 8 orders of Fragilariophyceae Class were described and identified by light microscopy in Ngor’s waters between July 2009 and November 2011. All these taxa are new for the microflora of Ngor.

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11

Nardelli, Margaret Seghetto, Norma Catarina Bueno, Thelma Alvim Veiga Ludwig, Priscila Izabel Tremarin, and Elaine Cristina Rodrigues Bartozek. "Coscinodiscophyceae and Fragilariophyceae (Diatomeae) in the Iguaçu River, Paraná, Brazil." Acta Botanica Brasilica 28, no. 1 (2014): 127–40. http://dx.doi.org/10.1590/s0102-33062014000100013.

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12

Bazhenova, O. P., A. M. Glushchenko, I. Yu Igoshkina, T. E. Shkilev, and M. S. Kulikovskiy. "Plankton diatoms (Fragilariophyceae, Bacillariophyceae) from the middle part of Irtysh River." Novosti sistematiki nizshikh rastenii 53, no. 2 (2019): 207–40. http://dx.doi.org/10.31111/nsnr/2019.53.2.207.

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Investigation of diatoms from plankton of the Irtysh River using light microscopy resulted in findings of 122 species of pennate diatoms from 38 genera. We found five species of Fragilariophyceae and 117 species of Bacillariophyceae. The genera Nitzschia (14 species), Navicula (8), Sellaphora (7), Pinnularia (7), Surirella (7) are characterized by the largest number of species. For the first time for the Middle Irtysh, 61 species from 30 genera were found. Micrographs of the identified species are given. The list of diatoms has been refined and expanded.

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13

Генкал, С. И., та В. А. Габышев. "Пеннатные диатомовые водоросли (Bacillariophyta, Fragilariophyceae, Bacillariophyceae) оз. Большое Токо (Южная Якутия)". Биология внутренних вод, № 3 (2020): 222–31. http://dx.doi.org/10.31857/s0320965220030067.

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14

Genkal, S. I., and V. A. Gabyshev. "Diatoms (Bacillariophyta, Fragilariophyceae, and Bacillariophyceae) of Lake Bolshoye Toko (South Yakutia)." Inland Water Biology 13, no. 2 (2020): 122–30. http://dx.doi.org/10.1134/s1995082920020200.

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15

Karthick, B., Kensuke Toyoda, T. V. Ramachandra, and David M. Williams. "A NOTE ON THE IDENTITY OFCERATONEIS IYENGARIIGONZALVES & GANDHI (FRAGILARIOPHYCEAE, BACILLARIOPHYTA)." Diatom Research 24, no. 1 (2009): 233–36. http://dx.doi.org/10.1080/0269249x.2009.9705794.

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16

Landucci, Monaliza, and Thelma A. Veiga Ludwig. "Diatomáceas de rios da bacia hidrográfica Litorânea, PR, Brasil: Coscinodiscophyceae e Fragilariophyceae." Acta Botanica Brasilica 19, no. 2 (2005): 345–57. http://dx.doi.org/10.1590/s0102-33062005000200018.

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Realizou-se o inventário florístico das diatomáceas pertencentes às classes Coscinodiscophyceae e Fragilariophyceae de rios da bacia hidrográfica Litorânea do Paraná. Amostras planctônicas e perifíticas foram coletadas em dezembro/1998, e em fevereiro e julho/2000 em nove rios: Iporanga, Nhundiaquara, do Nunes, Cachoeira, do Salto, Cambará, da Onça, Cabaraquara e do Engenho. Identificaram-se 20 táxons infragenéricos, sendo Aulacoseira distans (Ehr.) Sim. var. distans citação pioneira para o Estado do Paraná. Foram de ocorrência exclusiva em amostras planctônicas Asterionella formosa Hass. var.

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17

Al-Handal, Adil, Patrick Kociolek, and Dawood Abdullah. "Williamsella iraqiensis sp. nov., a new diatom (Bacillariophyta, Fragilariophyceae) from Sawa Lake, South Iraq." Phytotaxa 244, no. 3 (2016): 289. http://dx.doi.org/10.11646/phytotaxa.244.3.5.

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A new species of the genus Williamsella (Fragilariophyceae) is described from a saline lake in southern Iraq. Williamsella iraqiensis sp. nov. was found free living and as epiphyte on Chara sp. in Sawa Lake. This species is the second described of the genus Williamsella which was originally reported from Blue Lake warm springs, Utah, USA. Williamsella iraqiensis sp. nov. and W. angusta can be readily distinguished under LM by having a relatively wide sternum which results from shorter striae along valve margin. Description of valve ultrastructure and comparison with other related genera such a

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18

López-Fuerte, Francisco Omar, David A. Siqueiros-Beltrones, and Ricardo Yabur. "First record of benthic diatoms (Bacillariophyceae and Fragilariophyceae) from Isla Guadalupe, Baja California, Mexico." Revista Mexicana de Biodiversidad 86, no. 2 (2015): 281–92. http://dx.doi.org/10.1016/j.rmb.2015.04.016.

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19

Fontana, Luciane, and Denise de C. Bicudo. "Diatomáceas (Bacillariophyceae) de sedimentos superficiais dos reservatórios em cascata do Rio Paranapanema (SP/PR, Brasil): Coscinodiscophyceae e Fragilariophyceae." Hoehnea 36, no. 3 (2009): 375–86. http://dx.doi.org/10.1590/s2236-89062009000300001.

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Foi realizado inventário das diatomáceas pertencentes às classes Coscinodiscophyceae e Fragilariophyceae de sedimentos superficiais dos reservatórios em cascata do Rio Paranapanema. Amostras de sedimentos foram coletadas com draga, em três estações de amostragem de quatro reservatórios localizados nas regiões do alto trecho do rio (represas de Jurumirim e Chavantes) e médio (represas de Salto Grande e Capivara) e, em duas estações, no baixo Paranapanema (Represa de Rosana). Foram identificados 13 táxons infragenéricos, seis e sete respectivamente pertencentes às classes Coscinodiscophyceae e F

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20

LÓPEZ-FUERTE, FRANCISCO OMAR, and DAVID ALFARO SIQUEIROS BELTRONES. "A checklist of marine benthic diatoms (Bacillariophyta) from Mexico." Phytotaxa 283, no. 3 (2016): 201. http://dx.doi.org/10.11646/phytotaxa.283.3.1.

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This article summarizes nearly three decades of research on marine benthic diatoms from coastal areas in Mexico. The studies analyzed yielded 1162 taxonomic entities that include species, varieties, and forms, plus a considerable number of informal designations; i.e., “aff.” and “cf.”. The taxonomic list resulted from surveying all available published data on the topic, mostly by the authors, from northwest and southeast Mexico, with the objective of providing an up-to-date basis for further research on benthic diatoms from Mexico and related areas. Members of the Class Bacillariophyceae are t

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21

Severiano, Juliana Dos Santos, Ariadne Do Nascimento Moura, Helton Soriano Bezerra de Oliveira, Micheline Kézia Cordeiro-Araújo, and Ênio Wocyli Dantas. "Micro-phytoplankton richness in Contas River, state of Bahia, northeastern Brazil." Check List 8, no. 2 (2012): 218. http://dx.doi.org/10.15560/8.2.218.

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Phytoplankton composition in lotic environments has received less attention than that of lentic environments. The aim of the present study was to describe the micro-phytoplankton of the Contas River, which is one of the five most important water bodies in the state of Bahia, Brazil. Collections were carried out at 28 sampling sites at three-month intervals over a three-year period between December 2007 and September 2010. The micro-phytoplankton community was represented by 198 taxa distributed among Bacillariophyceae, Coscinodiscophyceae, Cyanophyceae, Fragilariophyceae, Chlorophyceae, Euglen

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Severiano, Juliana, Ariadne Moura, Helton Soriano Oliveira, Micheline Cordeiro-Araújo, and Ênio Dantas. "Micro-phytoplankton richness in Contas River, state of Bahia, northeastern Brazil." Check List 8, no. (2) (2012): 218–23. https://doi.org/10.15560/8.2.218.

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Phytoplankton composition in lotic environments has received less attention than that of lentic environments. The aim of the present study was to describe the micro-phytoplankton of the Contas River, which is one of the five most important water bodies in the state of Bahia, Brazil. Collections were carried out at 28 sampling sites at three-month intervals over a three-year period between December 2007 and September 2010. The micro-phytoplankton community was represented by 198 taxa distributed among Bacillariophyceae, Coscinodiscophyceae, Cyanophyceae, Fragilariophyceae, Chlorophyceae, Euglen

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23

MORALES, EDUARDO A., MARIA HELENA NOVAIS, MARÍA LUJÁN GARCÍA, NORA I. MAIDANA, and MARÍA MANUELA MORAIS. "A new species of Punctastriata (Bacillariophyta, Fragilariophyceae) from temporary streams in southern Portugal." Phytotaxa 507, no. 3 (2021): 261–65. http://dx.doi.org/10.11646/phytotaxa.507.3.3.

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24

& et al., Al Hassany. "REVISION OF ALGAL FLORA (DIATOMS) CHECKLIST IN TIGRIS RIVER WITHIN BAGHDAD CITY -IRAQ." IRAQI JOURNAL OF AGRICULTURAL SCIENCES 52, no. 4 (2021): 836–58. http://dx.doi.org/10.36103/ijas.v52i4.1392.

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The present study was confined to a taxonomical and systematical revision of all so far, recorded diatoms from study was Tigris River within Baghdad district. There is a lot of confusion in the naming and nomenclature of this and other groups of algae in Iraq and even in the whole middle east. Since various systematic categories have been used and applied for the identification of diatoms and another algal taxon. More than half of all so far, known diatoms (a total of 345 taxa) have been renamed by the most recent internationally accepted system of classification. In the current study, Bacilla

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SILVA, Ugo Lima, Lucas Conceição VIEIRA, Marcus Vinicius Lourenço de MELLO, Elton José de FRANÇA, Dario Rocha FALCON, and Eudes De Souza CORREIA. "RESPOSTA FITOPLANCTÔNICA À DIFERENTES FONTES DE CARBONO E RELAÇÕES C:N NA ALEVINAGEM DE TILÁPIA CULTIVADA COM BIOFLOCOS." Boletim do Instituto de Pesca 44, no. 2 (2018): 155. http://dx.doi.org/10.20950/1678-2305.2018.255.

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O objetivo deste trabalho foi avaliar a dinâmica da comunidade fitoplanctônica durante a alevinagem de tilápia do Nilo, Oreochromis niloticus, com tecnologia de bioflocos. Adotou-se um delineamento experimental inteiramente casualizado com 6 tratamentos e 4 repetições, sendo testadas três fontes de carbono: melaço (ME), açúcar (AC) e fécula de mandioca (FE), nas relações carbono/nitrogênio (C:N) 10:1 e 20:1. As coletas de fitoplâncton foram realizadas semanalmente durante 63 dias, em amostras de 5 L de água filtradas numa rede de plâncton com malha de 25 μm. A comunidade fitoplanctônica do amb

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Costa, Manoel Messias da Silva, Enide Eskinazi-Leça, Sonia Maria Barreto Pereira, and Maria Elizabeth Bandeira-Pedrosa. "Diatomáceas epífitas em Galaxaura rugosa (J. Ellis & Solander) J.V. Lamouroux (Rhodophyta) no Arquipélago de Fernando de Noronha, PE, Nordeste do Brasil." Acta Botanica Brasilica 23, no. 3 (2009): 713–19. http://dx.doi.org/10.1590/s0102-33062009000300010.

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Exemplares de Galaxaura rugosa (J. Ellis & Solander) J.V. Lamouroux foram coletados nos meses de junho/2006 e junho/2007, em três localidades do Arquipélago de Fernando de Noronha (Atalaia, Porto e Cagarras), com o objetivo de identificar a flora das diatomáceas epífitas que habita o talo da alga. Foram identificados 52 táxons distribuídos nas classes: Coscinodiscophyceae (19%), Fragilariophyceae (21%) e Bacillariophyceae (60%) denotando uma dominância de indivíduos com simetria bilateral, os quais corresponderam a 81% da flora identificada. As seguintes espécies caracterizaram a estrutura

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27

Fadilah, Kabul, Muhammad Abdus Salam Jawwad, and Syadzadhiya Qothrunada Zakiyayasin Nisa’. "Struktur Komunitas Fitoplankton sebagai Indikator Kualitas Air di Kali Mas Kota Surabaya." Bioscientist : Jurnal Ilmiah Biologi 10, no. 2 (2022): 799. http://dx.doi.org/10.33394/bioscientist.v10i2.6077.

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Phytoplankton is an aquatic organism that is sensitive to environmental changes. Kali Mas is one of the rivers that passes through the city of Surabaya, and is a source of water needs for various domestic and industrial needs. The purpose of this study was to determine the status of Kali Mas water quality based on the phytoplankton community structure, which includes: diversity, abundance, evenness, dominance, and saprobic index. The method used in this study is purposive sampling. Water and phytoplankton samples were taken from 5 stations along the Kali Mas flow. The identification results of

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A. Morales, Eduardo. "Two new species of Pseudostaurosiropsis (Bacillariophyta, Fragilariophyceae) from the United States of America, with taxonomic comments on the genus." Algae 37, no. 1 (2022): 33–47. http://dx.doi.org/10.4490/algae.2022.37.11.15.

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Two new species of Pseudostaurosiropsis are described based on material collected from rivers in southern UnitedStates of America, P. californicus sp. nov. and P. elaboratus sp. nov. Both species have specific characters that set themapart from taxa currently ascribed to the genus. Pseudostaurosiropsis californicus sp. nov. has lanceolate valves with subrostrate, broadlyrounded apices, an axial area at the same level as the virgae in internal and external views and both are at the same levelas striae in external view, the spine tips are dentate and their growth is produced by filamentous exten

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Ognjanova-Rumenova, Nadja, and Radovan Pipík. "Stratigraphic and taxonomic significance of siliceous microfossils collected from the Turiec Basin, Western Carpathians (Slovakia)." Acta Botanica Croatica 74, no. 2 (2015): 345–61. http://dx.doi.org/10.1515/botcro-2015-0023.

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Abstract This study provides the first biostratigraphic data of siliceous microfossils from Turiec Basin, Slovakia. The fossil diatom flora consists of 42 species and varieties, belonged to 22 genera. The diatom assemblage studied from the Turiec Basin bears a strong resemblance to assemblages from non-marine diatomaceous sediment of Miocene age from Rüdenschwinden, a village of the eastern slope of the Hohe Rhön (Central Germany), non-marine sediments of the early Late Miocene from the village of Szilagy (South Hungary), as well as from Bes Konak Basin, Turkey. The investigated profile is gen

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Pascoaloto, Domitila, and Sérgio Roberto Bulcão Bringel. "MACROALGAS E QUALIDADE DA ÁGUA NA BACIA DO ALTO RIO NEGRO - MUNICÍPIO DE SÃO GABRIEL DA CACHOEIRA (AM)." Caminhos de Geografia 11, no. 36 (2011): 318–30. http://dx.doi.org/10.14393/rcg113616219.

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Neste estudo foram investigadas as comunidades de macroalgas e qualidade da água do rio Negro no município de São Gabriel da Cachoeira, desde a entrada do rio Negro no Brasil, na comunidade Cucuí (hemisfério norte) até o rio Marié (hemisfério sul), entre setembro/2007 e maio/2009. As águas dos locais apresentaram pH ácido (< 5,5), condutividade elétrica baixa (< 13 μS/cm) e foram bem oxigenadas (> 6,0 mgO2/L). As entidades ecológicas de macroalgas observadas pertenceram aos gêneros Batrachospermum Roth (Batrachospermaceae, Rhodophyta); Microspora Thuret (Microsporaceae, Chorophyta), O

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Cahyani, Lisna E., Kesaulya Irma, and Sara Haumahu. "Pengaruh Perubahan Gradien Suhu dan Salinitas terhadap Struktur Komunitas Fitoplankton di Perairan Teluk Ambon." Jurnal Kelautan Tropis 26, no. 3 (2023): 543–53. http://dx.doi.org/10.14710/jkt.v26i3.19817.

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Primary production in the marine ecosystem depends on the presence of phytoplankton. The presence of phytoplankton is controlled by physical parameters such as salinity and temperature. In order to understand the impact of change of salinity and temperature on the community structure of phytoplankton, especially their abundance and diversity in the waters of Ambon bay, water samples were collected in May and July 2021 at 13 stations and in the layer of 0-10 meters and temperature and salinity were measured simultaneously. Thirty-seven species of phytoplankton were found. The highest number of

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López-Fuerte, Francisco Omar, and David A. Siqueiros-Beltrones. "A checklist of marine benthic diatoms (Bacillariophyta) from Mexico." Phytotaxa 283, no. 3 (2016): 201–58. https://doi.org/10.11646/phytotaxa.283.3.1.

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López-Fuerte, Francisco Omar, Siqueiros-Beltrones, David A. (2016): A checklist of marine benthic diatoms (Bacillariophyta) from Mexico. Phytotaxa 283 (3): 201-258, DOI: 10.11646/phytotaxa.283.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.283.3.1

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Gómez, Fernando, Lu Wang, and Senjie Lin. "Morphology and molecular phylogeny of epizoic araphid diatoms on marine zooplankton, including Pseudofalcula hyalina gen. & comb. nov. (Fragilariophyceae, Bacillariophyta)." Journal of Phycology 54, no. 4 (2018): 557–70. http://dx.doi.org/10.1111/jpy.12760.

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Lobus, Nikolay V., Anton M. Glushchenko, Yevhen I. Maltsev, and Maxim S. Kulikovskiy. "Fragilaria shirshovii sp. nov. – a new species of araphid diatoms (Bacillariophyta, Fragilariophyceae) from the Gulf of Ob (Kara Sea, Arctic)." Issues of modern algology (Вопросы современной альгологии), no. 2(32) (2023): 18–19. http://dx.doi.org/10.33624/2311-0147-2023-2(32)-18-19.

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A new species Fragilaria shirshovii sp. nov. is described on the basis of molecular and morphological investigations. Cells were isolated from surface levels of desalinated water masses in the zone of mixing river and marine waters in the Gulf of Ob. Morphology of this species is analyzed with light and scanning electron microscopy. Phylogenetic analysis was performed based on the analysis of partials 18S rRNA and rbcL genes. The paper discusses the differences between F. shirshovii sp. nov. and related species of the taxon Fragilariaceae.

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Dunck, Bárbara, Ina de Souza Nogueira, and Maria das Graças Machado. "Planktonic diatoms in lotic and lentic environments in the Lago dos Tigres hydrologic system (Britânia, Goiás, Brazil): Coscinodiscophyceae and Fragilariophyceae." Brazilian Journal of Botany 35, no. 2 (2012): 181–93. http://dx.doi.org/10.1590/s1806-99592012000200007.

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Lobus, Nikolay V., Anton M. Glushchenko, Sergei I. Genkal, Yevhen I. Maltsev, and Maxim S. Kulikovskiy. "Fragilaria shirshovii sp. nov.—A New Species of Araphid Diatoms (Bacillariophyta, Fragilariophyceae) from the Gulf of Ob (Kara Sea, Arctic)." Diversity 15, no. 8 (2023): 916. http://dx.doi.org/10.3390/d15080916.

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A new species, Fragilaria shirshovii sp. nov., is described on the basis of molecular and morphological investigations. Cells were isolated from the surface levels of desalinated water masses in the zone of mixing river and marine waters in the Gulf of Ob. The morphology of this species is analyzed with light microscopy (LM) and scanning electron microscopy (SEM). The valves of F. shirshovii sp. nov. are fusiform to almost linear. The frustules are linked together in the central part, forming double comb-shaped colonies. The axial area is narrow and linear, with a distinct rounded or rectangul

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Saragih, Friska Setiawani, Hasim Djamil, Juanda Juanda, et al. "Nutrient Concentration, Water Brightness, Chlorophyll-a, and Phytoplankton Abundance as Indicators for Determining the Trophic Status of Lake Toba, North Sumatera - Indonesia." Journal of Aquaculture and Fish Health 13, no. 3 (2024): 366–74. http://dx.doi.org/10.20473/jafh.v13i3.57981.

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The purpose of this study was to investigate the water quality and phytoplankton abundance in Lake Toba to determine its trophic status. This research was conducted from January to March 2024 at four stations in Lake Toba. Water samples were taken using a UWITEC water sampler and a plankton net and brought to the laboratory for analysis. The study measured physical and chemical water quality and phytoplankton abundance. The results showed a brightness ranging between 5.8 and 6.3 meters, chlorophyll-a content <10 µg/L, total nitrogen <750 µg/L, and phosphorus ranging from 20 µg/L to 30 µg

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Pane, EP, Y. Risjani, Yunianta, et al. "Description of Some Microalgae Isolates Captured from Sumatra Island, Indonesia." IOP Conference Series: Earth and Environmental Science 1191, no. 1 (2023): 012014. http://dx.doi.org/10.1088/1755-1315/1191/1/012014.

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Abstract Microalgae as phytoplankton become the considerable attention object because of their potential in various application. Microalgae can be discovered in various ecosystems and growing in all environmental conditions. The purpose of this study was to identify the genus and abudance of microalgae in some of the coastal area of Sumatera Island, Indonesia. This study was conducted in August until September 2022. The method used is descriptive quantitative by exploration and microalgae calculations. The calculations based on Shannon-Wiener such as abundance, relative abundance, diversity in

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Isroliyah, Afifatul, Anhar Solichin, and Siti Rudiyanti. "KEBIASAAN MAKANAN DAN LUAS RELUNG IKAN RED DEVIL (Amphilophus labiatus) DI PERAIRAN WADUK JATIBARANG, SEMARANG." Jurnal Pasir Laut 5, no. 2 (2021): 96–102. http://dx.doi.org/10.14710/jpl.2021.35190.

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Waduk Jatibarang dimanfaatkan sebagai daerah pengendali banjir, daerah pariwisata dan konservasi ikan air tawar. Jenis ikan yang terdapat di Waduk Jatibarang antara lain ikan Nila, Grass Carp, Gabus, Bader/Tawes, Bandeng, dan Red Devil. Penelitian ini bertujuan untuk mengetahui kebiasaan makanan ikan Red Devil (Amphilophus labiatus), sehingga dapat dijadikan rujukan pengelolaan di Waduk Jatibarang agar populasi ikan tetap terjaga kelestarianya. Penelitian ini dilakukan dengan mengambil sampel ikan Red Devil (Amphilophus labiatus) di perairan Waduk Jatibarang dengan menggunakan alat tangkap But

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Vandi, P., B. Garba, U. Habu, H. A. Bello, I. Z. Kunihya, and J. W. Gambu. "Influence of Physicochemical Parameters on Distribution and Abundance of Plankton in Lake Geriyo, Yola, Adamawa State, Nigeria." Journal of Applied Sciences and Environmental Management 29, no. 2 (2025): 601–9. https://doi.org/10.4314/jasem.v29i2.31.

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The objective of this paper was to evaluate the influence of physicochemical parameters on the distribution and abundance of plankton in Lake Geriyo, Yola, Adamawa State, Nigeria using appropriate standard procedures. The physicochemical parameters showed that the pH of the lake ranged from 6.35±0.07 to 8.56±0.08, Temperature from 6.35±0.07 to 29.22±1.07, Electrical conductivity 147.77±15.75 to 582.22±8.39, Total Soluble Solid 0.02±0.01 to 0.33±0.07, Dissolved Oxygen 2.19±0.20 to 7.76±0.25, Biological Oxygen Demand 1.01±0.22 to 4.89±1.21, Chemical Oxygen Demand 1.27±0.03 to 5.53±1.22, and ammo

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Ain, Churun, Sutrisno Anggoro, Dian Wijayanto, Siti Rudiyanti, and Afifatul Isroliyah. "ECOLOGICAL NICHE BASED ON FISH FOOD COMPETITION AND FEEDING HABIT PATTERNS IN THE JATIBARANG RESERVOIR." Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology 17, no. 4 (2021): 279–84. http://dx.doi.org/10.14710/ijfst.17.4.279-284.

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The purpose of this study was to determine ecological niche, the types of fish caught using gillnet and fishhook, the abundance of plankton, feeding habits and food competition in Jatibarang reservoir. The research was conducted from July until October, 2020. Tilapia (Oreachromis niloticus), Milkfish (Chanos chanos), Grass Carp (Ctenopharyngodon idella), Java Barb (Barbonymus gonionotus), and Red Devil (Amphilophus amarillo) were several types of fish found in the Jatibarang Reservoir. The total abundance of plankton was 4220 ind /, with L.Chlorophyceae dominating with a value 1780 ind / L and

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Atmaja, Putu Satya Pratama, Dietriech G. Bengen, and Hawis H. Madduppa. "The Second Skin of Seagrass Leaves: A Comparison of Microalgae Epiphytic Communities Between Two Different Species Across Two Seagrass Meadows in Lesser Sunda Islands." Tropical Life Sciences Research 32, no. 2 (2021): 97–119. http://dx.doi.org/10.21315/tlsr2021.32.2.7.

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Epiphytes as the important features in the seagrass ecosystems have been studied widely, and their functions as a primary producer, influence rates of herbivory grazer, and prevent seagrass leaf from desiccation is well known. However, patterns and distribution among seagrasses especially in Indonesia, which was known as hotspot marine biodiversity is not well understood. Therefore, this study aimed to examined epiphytic assemblages on two seagrass species with different morphological and longevity, Enhalus acoroides and Cymodocea rotundata, in two different meadows (conservation area and non-

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ALMEIDA, PRYSCILLA DENISE, Eduardo Antonio Morales, Carlos Eduardo Wetzel, Luc Ector, and Denise De Campos Bicudo. "Two new diatoms in the genus Fragilaria Lyngbye (Fragilariophyceae) from tropical reservoirs in Brazil and comparison with type material of F. tenera." Phytotaxa 246, no. 3 (2016): 163. http://dx.doi.org/10.11646/phytotaxa.246.3.1.

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Two new diatom species, Fragilaria neotropica sp. nov. and F. spectra sp. nov., from six reservoirs with different trophic status in the Alto Tietê River Basin, São Paulo, Brazil, are described. Descriptions are based on light (LM) and scanning electron microscopy (SEM) data revealing that both taxa have distinctive features that separate them from each other and from other taxa currently in Fragilaria. Fragilaria neotropica has high stria density, broader (sometimes deformed) central area, and capitate (often deflected) apices. This species was found in high abundance as part of the phytoplan

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Sahajpal, Vivek. "Diatomological Profile at Discrete Depths of Powai Lake, Mumbai for Medico-Legal Purposes." International Journal of Forensic Sciences 8, no. 2 (2023): 1–10. http://dx.doi.org/10.23880/ijfsc-16000301.

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Diatoms are photosynthetic microorganisms that play important role in forensic diatomology in the diagnosis of drowning deaths. In the present study, the Diatomological profile of Powai lake was prepared for medico-legal purposes using the Shannon-Wiener index. Powai lake (19.1266° N, 72.9062° E) is a large artificial lake situated in a northern suburb of Mumbai. Diatoms sampling was conducted in February 2017 from this lake. This study aimed to identify the various genera of diatoms and to determine the relative abundance, generic counting, and diversity index of diatoms for the medico-legal

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Petrov, A. N., and E. L. Nevrova. "Estimation of cell distribution heterogeneity at toxicological experiments with clonal cultures of benthic diatoms." Marine Biological Journal 5, no. 2 (2020): 76–87. http://dx.doi.org/10.21072/mbj.2020.05.2.07.

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An increase in anthropogenic pressure on coastal water areas requires regular monitoring of marine ecosystems. The appropriate bioindicators for indirect assessment of the quality of the near-shore environment are benthic diatom algae, which are a key element of coastal communities and are highly sensitive to environmental impact. Changes in the development of diatoms under the influence of various toxicants may be used as relevant tool for monitoring of marine environment quality. However, scientific and methodological approaches to application of benthic diatom algae as test objects remain u

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Verma, Priyanka, and Khushboo Thapliyal. "Diatom Analysis in Thermophilic water bodies: A Study on Hot Water Springs of Madhya Pradesh." Indian Journal of Forensic Medicine and Pathology 16, no. 2 (2023): 133–43. http://dx.doi.org/10.21088/ijfmp.0974.3383.16223.6.

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INTORDUCTION: This study was done with the objective to study the presence of various species of diatoms present in the thermophilic water bodies of Madhya Pradesh (Anhoni and ChavalPani). And to determine the correlation of physiological variables such as temperature and pH to the diatom density. METHODOLOGY: For the detection of diatom species in the water samples acid digestion method was used.50 ml of sample was taken and 10 ml of concentrated nitric acid (HNO3) was added. The sample is then kept undisturbed for 24 hours. The sample was then centrifuged for 10 minutes at 3000rpm 3 times. T

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Bayramova, Elvira, Darya Petrova, Artyom Marchenkov, et al. "Differential Expression of Stress Adaptation Genes in a Diatom Ulnaria acus under Different Culture Conditions." International Journal of Molecular Sciences 25, no. 4 (2024): 2314. http://dx.doi.org/10.3390/ijms25042314.

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Diatoms are a group of unicellular eukaryotes that are essential primary producers in aquatic ecosystems. The dynamic nature of their habitat necessitates a quick and specific response to various stresses. However, the molecular mechanisms of their physiological adaptations are still underexplored. In this work, we study the response of the cosmopolitan freshwater diatom Ulnaria acus (Bacillariophyceae, Fragilariophycidae, Licmophorales, Ulnariaceae, Ulnaria) in relation to a range of stress factors, namely silica deficiency, prolonged cultivation, and interaction with an algicidal bacterium.

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Delgado, Cristina, M. Helena Novais, Saúl Blanco, and Salomé F. P. Almeida. "Fragilaria rinoi sp. nov. (Fragilariales, Fragilariophyceae) from periphytic river samples in Central Portugal." European Journal of Taxonomy, no. 248 (December 2, 2016). http://dx.doi.org/10.5852/ejt.2016.248.

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A new benthic freshwater diatom, Fragilaria rinoi Almeida & C.Delgado sp. nov., is described from river periphyton samples in Portugal. Fragilaria rinoi sp. nov. is illustrated and discussed based on populations collected from the Vouga, Mondego and Lis river basins in central Portugal and compared with the type material of Fragilaria vaucheriae (Kütz.) J.B.Petersen. The morphological features of the new diatom species are documented through light and scanning electron micrographs, including a comparative analysis with related species of the genus (F. candidagilae Almeida, C.Delgado, Novai

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MORALES, EDUARDO A. "Punctastriata altera sp. nov. (Bacillariophyta, Fragilariophyceae), a diatom from the United States of America." Phytotaxa 516, no. 3 (2021). http://dx.doi.org/10.11646/phytotaxa.516.3.9.

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The genus Punctastriata D.M.Williams & Round (1988: 278) contains 10 species that are difficult to identify under light microscopy (LM) (Wetzel & Ector 2021, Morales et al. 2021). The difficulty lies in the differentiation of the overall valve outline and striation pattern of these species from members of Staurosirella D.M.Williams & Round (1988: 274). Under scanning electron microscopy (SEM), the striae of species of Punctastriata are typically multiseriate, the consequence of a profuse formation of viminules. In Staurosirella, the striae are composed of long and slender vimines d

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Manigandan, Vajravelu, Ranjit Kumar Sarangi, Danaraj Jeyapragash, and Saravanakumar Ayyappan. "Environmental‐driven dynamics of phytoplankton assemblages in the Bay of Bengal, Southeast coast of India." Marine Ecology, May 27, 2024. http://dx.doi.org/10.1111/maec.12812.

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AbstractA study conducted from January to December 2018 examined seasonal variations in horizontal phytoplankton communities. A total of 93 species were identified, including 63 Coscinodiscophyceae, 4 Fragilariophyceae, 7 Bacillariophyceae, 15 Dinophyceae, and 4 Cyanophyceae. The highest species diversity and abundance occurred during the postmonsoon and premonsoon periods. Environmental parameters (viz., temperature, salinity, dissolved oxygen, pH, ammonia, nitrite, silicate, total suspended solids) were all statistically significant except for nitrite (p > .05). Multivariate statistical a

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