Diatom Research最新文献_第8页

The correct use of the names Synedra Ehrenberg and Catacombas Williams & Round, a note on the name ‘Hystrix Bory 1822’, and some suggestions how to tackle the taxonomic relationships of Synedra Synedra Ehrenberg和Catacombas Williams&Round名称的正确使用，关于“Hystrix Bory 1822”名称的注释，以及如何处理Synedra的分类学关系的一些建议

IF 1.8 3区生物学

Diatom Research Pub Date : 2021-04-03 DOI: 10.1080/0269249X.2021.1880974

David M. Williams, B. Karthick

引用次数: 5

Navithidium gen. nov., a new monoraphid diatom (Bacillariophyceae) genus based on Achnanthes delicatissima Simonsen Navithidium gen.nov.，一个以Achanthes delicatissima Simonsen为基础的新的广场形硅藻属（硅藻科）

IF 1.8 3区生物学

Diatom Research Pub Date : 2021-04-03 DOI: 10.1080/0269249X.2021.1921039

Adil Y. AL-HANDAL, O. Romero, S. L. Eggers, A. Wulff

引用次数: 4

Two new species of the diatom genus Navicula Bory (Bacillariophyceae) from Vietnam (Southeast Asia) 越南硅藻属(硅藻科)两新种

IF 1.8 3区生物学

Diatom Research Pub Date : 2021-01-02 DOI: 10.1080/0269249X.2020.1853608

M. Kulikovskiy, D. Chudaev, A. Glushchenko, I. Kuznetsova, L. Frolova, J. Kociolek

引用次数: 2

Three new species of the diatom genus Hannaea Patrick (Bacillariophyta) from the Hengduan Mountains, China, with notes on Hannaea diversity in the region 横断山硅藻属三新种（硅藻门）及其多样性研究

IF 1.8 3区生物学

Diatom Research Pub Date : 2021-01-02 DOI: 10.1080/0269249X.2021.1873193

Fen Luo, Q. You, Lixuan Zhang, P. Yu, W. Pang, R. Bixby, Quanxi Wang

引用次数: 0

Proboscia macintyrei sp. nov. (Bacillariophyceae) from the subarctic Pacific, and new observations on P. eumorpha 亚北极太平洋的Proboscia machintyrei sp. 11 .(硅藻科)，以及P. umorpha的新观察

IF 1.8 3区生物学

Diatom Research Pub Date : 2021-01-02 DOI: 10.1080/0269249X.2021.1872708

Yuki Uezato, Kazuki Hoshina, R. Jordan

{"title":"Proboscia macintyrei sp. nov. (Bacillariophyceae) from the subarctic Pacific, and new observations on P. eumorpha","authors":"Yuki Uezato, Kazuki Hoshina, R. Jordan","doi":"10.1080/0269249X.2021.1872708","DOIUrl":"https://doi.org/10.1080/0269249X.2021.1872708","url":null,"abstract":"Light and scanning electron microscope observations on filtered water samples, collected during the subarctic Pacific cruises of the R/V Vema (VEMA 20; May–July 1964) and R/V Robert D. Conrad (CONRAD 10; June–August 1966), have revealed the presence of two seasonal forms of Proboscia macintyrei sp. nov. The ‘spring’ and ‘winter’ cells of the new species are both solitary (lacking claspers), with the ‘spring’ form possessing a much shorter and more domed proboscis. Proboscia macintyrei usually differs from other living Proboscia species by possessing 1–2 thin, long polar spinulae at the proboscis tip, usually situated on one side, to the left of the longitudinal slit (rimoportula). The proboscis of the P. macintyrei ‘winter’ form normally bears longitudinal crease-like ridges, but without the thinner transverse ribs of P. subarctica. The morphology of these two species suggests they are living representatives of the ‘barboi’ lineage. Proboscia eumorpha is sometimes present on the filters, with the ‘winter’ form being documented herein in detail for the first time.","PeriodicalId":11199,"journal":{"name":"Diatom Research","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0269249X.2021.1872708","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44815390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The genus Semiorbis (Eunotiaceae, Bacillariophyta) in North America 产于北美的半圆藻属(圆藻科，硅藻门)

IF 1.8 3区生物学

Diatom Research Pub Date : 2021-01-02 DOI: 10.1080/0269249X.2021.1875053

M. Edlund, D. R. Burge, N. Andresen, David D. VanderMeulen, J. Stone, B. Van de Vijver

{"title":"The genus Semiorbis (Eunotiaceae, Bacillariophyta) in North America","authors":"M. Edlund, D. R. Burge, N. Andresen, David D. VanderMeulen, J. Stone, B. Van de Vijver","doi":"10.1080/0269249X.2021.1875053","DOIUrl":"https://doi.org/10.1080/0269249X.2021.1875053","url":null,"abstract":"The genus Semiorbis was erected by R.M.Patrick in 1966 as monotypic based on the relatively rare taxon Semiorbis hemicyclus. Defining characters for Semiorbis include strongly arcuate valves, short eunotioid raphe branches, well-developed external costae with spine-like projections on the virgae, lack of rimoportulae, and a broader dorsal mantle. New populations of Semiorbis were found in the central USA (Wisconsin) on Outer Island, Apostle Islands National Lakeshore, along southeast Lake Superior, from a lake in New Jersey (USA), and from a small arctic lake in Nunavut, Canada. The population in Outer Lagoon, a shallow embayment cut off from Lake Superior by a long-shore bar, provided documentation of living cells and colonies of Semiorbis. We examined the morphology, ecology, and taxonomy of these new populations using light and scanning electron microscopy, traditional morphometrics, and sliding landmarks shape analysis. We compared these populations to European populations of Semiorbis hemicyclus and North American populations of Semiorbis rotundus and Semiorbis catillifera. We determined that the population found in Wisconsin represents a new species herein described as Semiorbis eliasiae Edlund, D.R.L.Burge, N.A.Andresen & VanderMeulen sp. nov., the New Jersey (USA) population is Semiorbis rotundus, and the Nunavut (Canada) population represents a North American population of the generitype Semiorbis hemicyclus.","PeriodicalId":11199,"journal":{"name":"Diatom Research","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0269249X.2021.1875053","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44434869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of temporal changes on a diatom species in a floodplain lake: paleolimnological and biomonitoring approach 洪泛区湖泊时间变化对硅藻种类的影响:古湖泊学和生物监测方法

IF 1.8 3区生物学

Diatom Research Pub Date : 2021-01-02 DOI: 10.1080/0269249X.2020.1848927

D. T. Ruwer, N. C. Osório, Sandra Costa-Böddeker, L. Rodrigues

{"title":"Influence of temporal changes on a diatom species in a floodplain lake: paleolimnological and biomonitoring approach","authors":"D. T. Ruwer, N. C. Osório, Sandra Costa-Böddeker, L. Rodrigues","doi":"10.1080/0269249X.2020.1848927","DOIUrl":"https://doi.org/10.1080/0269249X.2020.1848927","url":null,"abstract":"Long term anthropogenic and natural impacts may result in effects on hydrological and environmental variables in aquatic ecosystems, as floodplain lakes, causing changes in diatom populations and community composition. We hypothesized that temporal abiotic factors over time favoured the establishment and increase in relative abundance of the Achnanthidium minutissimum complex. For a greater understanding of variation in species abundance, we used biomonitoring and paleolimnological data, combining 18 years of data from periphyton samples and more than 60 years from sediment samples. To test the relationships between the environmental parameters and relative abundance of A. minutissimum from biomonitoring data, we used generalized linear models (GLM). Based on GLM, the relative abundance of A. minutissimum increased with lower water depth, lower temperature, higher turbidity, and high pH. These conditions coincide with periods of drought in the floodplain, which were more frequent and longer after the construction of dams near Lake Garças. Additionally, the paleolimnological data suggest that climatic and anthropogenic influences on abiotic factors, such as water level and turbidity may have been responsible for the increased abundance of A. minutissimum in Lake Garças, as well as its dominance in the periphytic community from 2000, after the last dam construction near the lake. This shows how the modification of an aquatic environment can change diatom populations, and highlights the importance of combining historical information, paleolimnological analyses and biomonitoring data to understand population and ecosystem processes over time.","PeriodicalId":11199,"journal":{"name":"Diatom Research","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0269249X.2020.1848927","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48419855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Nagumoea hydrophicola sp. nov. (Bacillariophyta), the first diatom species described from sea snakes Nagumoea hydrophicola sp. 11 .(硅藻门)，第一个从海蛇中发现的硅藻种

IF 1.8 3区生物学

Diatom Research Pub Date : 2021-01-02 DOI: 10.1080/0269249X.2020.1870159

R. Majewska

{"title":"Nagumoea hydrophicola sp. nov. (Bacillariophyta), the first diatom species described from sea snakes","authors":"R. Majewska","doi":"10.1080/0269249X.2020.1870159","DOIUrl":"https://doi.org/10.1080/0269249X.2020.1870159","url":null,"abstract":"Although diatoms colonize a vast diversity of immersed hard-surfaced objects and organisms, many diatom species, and sometimes entire genera, show a clear preference towards a particular type of substratum. Studies of animal-associated diatoms indicate that some epizoic forms may require this specific habitat to thrive, and new diatom taxa are expected to be found on as yet unexplored animal hosts. The current study is the first to investigate the diatom flora of sea snakes. Three museum specimens of yellow-bellied sea snakes (Hydrophis platurus) collected over a period of 23 years from the south-eastern coast of South Africa were examined for their diatom flora. Diatoms were abundant on the sea snakes, but communities were composed of only a few species. A previously undescribed species of Nagumoea contributed over 99% of the total diatom assemblage on both the sea snake skin and sea-snake-associated barnacles (Octolasmis sp.). This diatom dominant is described here as Nagumoea hydrophicola sp. nov., based on detailed observations of its frustule ultrastructure using light and scanning electron microscopy. The species is most similar to N. serrata, sharing a similar valvocopula morphology with two rows of pores. However, it can be distinguished from all currently known congeners by its lanceolate central area, short distal raphe endings not reaching the valve mantle, and doubly perforated abvalvar girdle bands. Environmental preferences of the new species are discussed in the context of its host’s biology.","PeriodicalId":11199,"journal":{"name":"Diatom Research","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0269249X.2020.1870159","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43846204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Stephanodiscus coruscus sp. nov., a new species of diatom (Bacillariophyta) from June Lake, California (USA) with close affiliation to Stephanodiscus klamathensis 珊瑚Stephanodiscus coruscus sp.nov.，产于美国加利福尼亚州六月湖的一种硅藻（Bacillarophyta），与克拉马氏Stephanodiescus klamatensis亲缘关系密切

IF 1.8 3区生物学

Diatom Research Pub Date : 2020-10-01 DOI: 10.1080/0269249x.2020.1846079

J. Stone, M. Edlund, Laura C Streib, Hung Ha Quang, M. McGlue

{"title":"Stephanodiscus coruscus sp. nov., a new species of diatom (Bacillariophyta) from June Lake, California (USA) with close affiliation to Stephanodiscus klamathensis","authors":"J. Stone, M. Edlund, Laura C Streib, Hung Ha Quang, M. McGlue","doi":"10.1080/0269249x.2020.1846079","DOIUrl":"https://doi.org/10.1080/0269249x.2020.1846079","url":null,"abstract":"Modern and fossil populations of a Stephanodiscus Ehrenberg species from June Lake, California (USA) were analysed using light and scanning electron microscopy (SEM). Stephanodiscus valves were a major constituent of almost all analysed samples, often dominating fossil assemblages dating back several thousand years. The most commonly observed Stephanodiscus specimen in the samples bore a striking resemblance to the extinct Late Pliocene species Stephanodiscus klamathensis, particularly under light microscopy. The population size range, ultrastructure, and other defining characteristics closely matched published information on S. klamathensis. However, under SEM, internal views of the specimens from June Lake showed an important difference; specimens lacked valve face fultoportulae, whereas S. klamathensis is characterized by the presence of two valve face fultoportulae, each with three satellite pores near the centre of the valve. Additional differences in valve size range, absence of fultoportulae on the valve face, and the fact that S. klamathensis is an extinct species (observed in diatomites deposited from Late Pliocene to Pleistocene) with no closely related living relatives, necessitates describing this Stephanodiscus as a new species. To date, Stephanodiscus coruscus has been observed only in June Lake, California; most Stephanodiscus that share strong morphological similarities to this species have only been observed in ancient fossil diatomites. Thus, Stephanodiscus coruscus Jeff. R. Stone, Edlund & Streib sp. nov. is not only a new species but also provides a rare glimpse into the likely types of environments that S. klamathensis and other similar ancient Stephanodiscus may have inhabited in the late Pliocene. Character variations between S. coruscus and S. klamathensis reveal potential patterns of evolution in freshwater lineages, such as character loss, over time.","PeriodicalId":11199,"journal":{"name":"Diatom Research","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0269249x.2020.1846079","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42591792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Entomoneis annagodheae Al-Handal & Mucko, the correct name for E. annagodhei Al-Handal & Mucko 安德蒙冰冠·安娜可达和穆克，《国王与王后之名》

IF 1.8 3区生物学

Diatom Research Pub Date : 2020-10-01 DOI: 10.1080/0269249x.2020.1842253

Adil Y. AL-HANDAL, Maja Mucko, A. Wulff

引用次数: 2