Pub Date : 2018-02-23DOI: 10.7872/crya/v39.iss1.2018.35
Christine Cocquyti, Wolf-Henning Kusber, R. Jahn
Abstract Epithemia hirudiniformis and three morphologically related taxa, described in Rhopalodia by O. Müller from material collected in East Africa at the end of the 19th and the beginning of the 20th century were re-evaluated and lectotypes designated. Rhopalodiella as a new subgenus is proposed which refines O. Müller's infrageneric classification and to which all these taxa belong. In addition, the type of Epithemia rhopala, described by Ehrenberg from Egypt, was studied to examine the assumed synonymy, introduced by Hustedt, with some of Müller's species. This study, using light and scanning electron microscopy, was not only based on historic material but also more recent material from Africa, including samples from the Island of Reunion from which the new species Epithemia vandevijveri is described. The distribution of Epithemia subg. Rhopalodiella, known to be restricted to tropical Africa, is discussed based on literature data and own observations. Corresponding to recent molecular-based studies, Rhopalodia is given a new status as subgenus.
摘要对19世纪末20世纪初在东非收集的资料中由O. m ller在《Rhopalodia》中描述的水蛭形Epithemia hirudiniformis和3个形态相关的分类群进行了重新评价和鉴定。提出了一个新的亚属Rhopalodiella，该亚属完善了O. m ller的近属分类，并将所有这些分类群归为该亚属。此外，研究了Ehrenberg从埃及描述的Epithemia rhopala的类型，以检验Hustedt引入的假设同义词与一些m ller的物种。这项研究，使用光学和扫描电子显微镜，不仅基于历史材料，而且基于来自非洲的最新材料，包括来自留尼旺岛的样本，其中描述了新物种Epithemia vandevijveri。Epithemia亚群的分布。根据文献资料和自己的观察，讨论了已知局限于热带非洲的Rhopalodiella。根据最近的分子基础研究，Rhopalodia被赋予了一个新的亚属地位。
{"title":"Epithemia hirudiniformis and Related Taxa within the Subgenus Rhopalodiella subg. nov. in Comparison to Epithemia subg. Rhopalodia stat nov. (Bacillariophyceae) from East Africa","authors":"Christine Cocquyti, Wolf-Henning Kusber, R. Jahn","doi":"10.7872/crya/v39.iss1.2018.35","DOIUrl":"https://doi.org/10.7872/crya/v39.iss1.2018.35","url":null,"abstract":"Abstract Epithemia hirudiniformis and three morphologically related taxa, described in Rhopalodia by O. Müller from material collected in East Africa at the end of the 19th and the beginning of the 20th century were re-evaluated and lectotypes designated. Rhopalodiella as a new subgenus is proposed which refines O. Müller's infrageneric classification and to which all these taxa belong. In addition, the type of Epithemia rhopala, described by Ehrenberg from Egypt, was studied to examine the assumed synonymy, introduced by Hustedt, with some of Müller's species. This study, using light and scanning electron microscopy, was not only based on historic material but also more recent material from Africa, including samples from the Island of Reunion from which the new species Epithemia vandevijveri is described. The distribution of Epithemia subg. Rhopalodiella, known to be restricted to tropical Africa, is discussed based on literature data and own observations. Corresponding to recent molecular-based studies, Rhopalodia is given a new status as subgenus.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2018-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83392068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.7872/crya/v39.iss1.2018.139
I. Probert, D. Lamy
Cryptogamie, Mycologie publie des articles originaux ou des articles de synthèse en systématique, biologie et écologie des champignons lichénisés et non-lichénisés, myxomycètes et autres groupes traditionnellement étudiés par des mycologues. Les articles à contenu purement floristique ou phytopathologique ne seront plus acceptés. Seuls les manuscrits rédigés en anglais seront pris en considération. Les auteurs n’écrivant pas dans leur langue doivent, avant soumission, faire relire leur texte, pour la grammaire et la syntaxe, par une personne dont c’est la langue maternelle. Il n’y a pas de limite au nombre de pages. La publication d’un article sera facilitée si les auteurs suivent soigneusement les instructions ci-après. La publication d’un article sera facilitée si les auteurs suivent soigneusement, pour le texte et les illustrations, les instructions ci-après. Le choix des référés est à la discrétion de l’Éditeur. La publication définitive des articles dépend de l’Éditeur.
{"title":"Instructions aux Auteurs","authors":"I. Probert, D. Lamy","doi":"10.7872/crya/v39.iss1.2018.139","DOIUrl":"https://doi.org/10.7872/crya/v39.iss1.2018.139","url":null,"abstract":"Cryptogamie, Mycologie publie des articles originaux ou des articles de synthèse en systématique, biologie et écologie des champignons lichénisés et non-lichénisés, myxomycètes et autres groupes traditionnellement étudiés par des mycologues. Les articles à contenu purement floristique ou phytopathologique ne seront plus acceptés. Seuls les manuscrits rédigés en anglais seront pris en considération. Les auteurs n’écrivant pas dans leur langue doivent, avant soumission, faire relire leur texte, pour la grammaire et la syntaxe, par une personne dont c’est la langue maternelle. Il n’y a pas de limite au nombre de pages. La publication d’un article sera facilitée si les auteurs suivent soigneusement les instructions ci-après. La publication d’un article sera facilitée si les auteurs suivent soigneusement, pour le texte et les illustrations, les instructions ci-après. Le choix des référés est à la discrétion de l’Éditeur. La publication définitive des articles dépend de l’Éditeur.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88832904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-21DOI: 10.7872/crya/v38.iss4.2017.285
Katia Sciuto, E. Moschin, I. Moro
Abstract The microflora of hypogean environments has been studied increasingly worldwide. However, some sites have hardly been examined or not studied at all; this is the case for the Giant Cave, a Karst show cave located near Trieste, Italy. In the present study we began characterizing the Giant Cave Lampenflora by using a polyphasic approach, focusing, in particular, on three Leptolyngbya-like strains named GR2, GR4, and GR13. Light and electron microscopic observations were carried out and the water-soluble pigment composition was analysed. Phylogenetic reconstruction, based on the 16S rRNA gene and the 16S-23S ITS region, was performed to better understand the taxonomic position of these strains, complemented by 16S-23S ITS secondary structure analysis. Ecological and geographical data for the investigated strains and for the other cyanobacterial strains grouping with them in the phylogenetic reconstructions were also considered. Based on the results, strain GR2 was ascribed to the species Heteroleibleinia purpurascens (Hansgirg) Anagnostidis & Komárek; strains GR4 and GR13 were attributed to a new genus of the family Leptolyngbyaceae, Timaviella Sciuto & Moro, gen. nov., and represented two distinct species: Timaviella circinata Sciuto & Moro and Timaviella karstica Sciuto & Moro.
{"title":"Cryptic Cyanobacterial Diversity in the Giant Cave (Trieste, Italy): The New Genus Timaviella (Leptolyngbyaceae)","authors":"Katia Sciuto, E. Moschin, I. Moro","doi":"10.7872/crya/v38.iss4.2017.285","DOIUrl":"https://doi.org/10.7872/crya/v38.iss4.2017.285","url":null,"abstract":"Abstract \u0000 The microflora of hypogean environments has been studied increasingly worldwide. However, some sites have hardly been examined or not studied at all; this is the case for the Giant Cave, a Karst show cave located near Trieste, Italy. In the present study we began characterizing the Giant Cave Lampenflora by using a polyphasic approach, focusing, in particular, on three Leptolyngbya-like strains named GR2, GR4, and GR13. Light and electron microscopic observations were carried out and the water-soluble pigment composition was analysed. Phylogenetic reconstruction, based on the 16S rRNA gene and the 16S-23S ITS region, was performed to better understand the taxonomic position of these strains, complemented by 16S-23S ITS secondary structure analysis. Ecological and geographical data for the investigated strains and for the other cyanobacterial strains grouping with them in the phylogenetic reconstructions were also considered. Based on the results, strain GR2 was ascribed to the species Heteroleibleinia purpurascens (Hansgirg) Anagnostidis & Komárek; strains GR4 and GR13 were attributed to a new genus of the family Leptolyngbyaceae, Timaviella Sciuto & Moro, gen. nov., and represented two distinct species: Timaviella circinata Sciuto & Moro and Timaviella karstica Sciuto & Moro.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78636205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-21DOI: 10.7872/crya/v38.iss4.2017.349
P. Rioual, D. Jewson, Qiang Liu, G. Chu, Jingtai Han, Jia-qi Liu
Abstract During an investigation on the diatom communities of volcanic lakes of Northeastern China a new species belonging to the “Cyclotella comta species complex” was observed. This taxon forms relatively large populations in the phytoplankton of Lake Tuofengling Tianchi, a 33m-deep, oligotrophic, crater lake located in Inner Mongolia. In this paper, the valve morphology and ultrastructure of this taxon is described using light and scanning electron microscopy and a new name, Lindavia khinganensis sp. nov., is proposed. A discriminant analysis based on morphological LM and SEM data confirmed that L. khinganensis is distinct from other Lindavia species with a similar morphology such as L. comta (Ehrenberg) Nakov et al., L. radiosa (Grunow) De Toni & Forti, L. balatonis (Pantocsek) Nakov et al., L. praetermissa (Lund) Nakov et al. and L. tenuistriata (Hustedt) Nakov et al. In addition, the seasonal and interannual distribution of L. khinganensis was investigated using sediment trap samples collected over a two-year period. Limnological data from Lake Tuofengling, including water chemistry and temperature recording from a thermistor chain provided complementary information about the ecology of this new species. This species was not found in any other lakes from Northeastern China that we investigated.
{"title":"Morphology and Ecology of a New Centric Diatom Belonging to the Cyclotella comta (Ehrenberg) Kützing Complex: Lindavia khinganensis sp. nov. from the Greater Khingan Range, Northeastern China","authors":"P. Rioual, D. Jewson, Qiang Liu, G. Chu, Jingtai Han, Jia-qi Liu","doi":"10.7872/crya/v38.iss4.2017.349","DOIUrl":"https://doi.org/10.7872/crya/v38.iss4.2017.349","url":null,"abstract":"Abstract \u0000 During an investigation on the diatom communities of volcanic lakes of Northeastern China a new species belonging to the “Cyclotella comta species complex” was observed. This taxon forms relatively large populations in the phytoplankton of Lake Tuofengling Tianchi, a 33m-deep, oligotrophic, crater lake located in Inner Mongolia. In this paper, the valve morphology and ultrastructure of this taxon is described using light and scanning electron microscopy and a new name, Lindavia khinganensis sp. nov., is proposed. A discriminant analysis based on morphological LM and SEM data confirmed that L. khinganensis is distinct from other Lindavia species with a similar morphology such as L. comta (Ehrenberg) Nakov et al., L. radiosa (Grunow) De Toni & Forti, L. balatonis (Pantocsek) Nakov et al., L. praetermissa (Lund) Nakov et al. and L. tenuistriata (Hustedt) Nakov et al. In addition, the seasonal and interannual distribution of L. khinganensis was investigated using sediment trap samples collected over a two-year period. Limnological data from Lake Tuofengling, including water chemistry and temperature recording from a thermistor chain provided complementary information about the ecology of this new species. This species was not found in any other lakes from Northeastern China that we investigated.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82344187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-21DOI: 10.7872/crya/v38.iss4.2017.379
S. A. Krueger‐Hadfield, Caroline L. Magill, Francis Bunker, N. Mieszkowska, E. Sotka, C. Maggs
Abstract Our knowledge of non-native algae in benthic estuarine habitats is relatively poor, especially compared to algal introductions along open shores or on floating structures. Gracilaria vermiculophylla is a widespread macroalgal invader in the temperate estuaries of the Northern Hemisphere, and, here, we expand its documented range within northeastern Ireland and England. Established populations occur within two inlets in the border counties, Carlingford Lough (Counties Louth and Down) and Dundrum Bay (County Down), but G. vermiculophylla is absent from open coasts between these sites. Repeated surveys in Dundrum Bay showed variable abundances, with an increase in biomass between 2013 and 2016. Three populations were discovered in England, where this species had not previously been identified: Christchurch Harbour (Dorset), Brownsea Island in Poole Harbour (Dorset), and Kingsbridge Estuary (Devon). The Irish and English thalli belong to the most common, invasive cox1 haplotype 6. Using a combination of morphological observations and 10 microsatellite loci, we found that the population at Carlingford Lough included both reproductive haploid gametophytes and diploid tetrasporophytes and genetic signatures of sexual reproduction, but the populations at Christchurch and Brownsea displayed signatures of partial clonality. Genetic diversity was higher along the south coast of England as compared to the Irish population, consistent with patterns of diversity previously described for the European coasts. Finally, we also note the occurrence of a putative G. vermiculophylla population in Wales at Porthmadog, Gwynedd. As the sites in which we have now documented G. vermiculophylla in the British Isles also host shellfish aquaculture activities, our study is further evidence for the role of aquaculture in the spread of invasive species.
我们对底栖河口生境中非原生藻类的了解相对较少，特别是与开放海岸或漂浮结构上的藻类引入相比。vermiculophylla是北半球温带河口广泛存在的大型藻类入侵者，在这里，我们扩大了其在爱尔兰东北部和英格兰的记录范围。已建立的种群出现在边境县的两个入口，Carlingford Lough (County Louth and Down)和Dundrum Bay (County Down)，但在这些地点之间的开放海岸没有G. vermiculophylla。在Dundrum湾的重复调查显示，2013年至2016年间，生物量有所增加，丰度变化。在英格兰发现了三个种群，在那里这个物种以前没有被发现过:克赖斯特彻奇港(多塞特)，普尔港的布朗西岛(多塞特)和金斯桥河口(德文郡)。爱尔兰和英国的菌体属于最常见的入侵性cox1单倍型6。结合形态学观察和10个微卫星位点，我们发现Carlingford Lough的种群同时具有生殖单倍体配子体和二倍体四孢子体，并具有有性生殖的遗传特征，而Christchurch和Brownsea的种群则表现出部分克隆的特征。与爱尔兰人口相比，英格兰南海岸的遗传多样性更高，这与之前描述的欧洲海岸的多样性模式一致。最后，我们还注意到在威尔士的波特马多格(Porthmadog, Gwynedd)发现了一个推测的蛭状毛藻种群。由于我们现在在不列颠群岛记录的G. vermiculophylla也有贝类养殖活动，我们的研究进一步证明了水产养殖在入侵物种传播中的作用。
{"title":"When Invaders Go Unnoticed: The Case of Gracilaria vermiculophylla in the British Isles","authors":"S. A. Krueger‐Hadfield, Caroline L. Magill, Francis Bunker, N. Mieszkowska, E. Sotka, C. Maggs","doi":"10.7872/crya/v38.iss4.2017.379","DOIUrl":"https://doi.org/10.7872/crya/v38.iss4.2017.379","url":null,"abstract":"Abstract \u0000 Our knowledge of non-native algae in benthic estuarine habitats is relatively poor, especially compared to algal introductions along open shores or on floating structures. Gracilaria vermiculophylla is a widespread macroalgal invader in the temperate estuaries of the Northern Hemisphere, and, here, we expand its documented range within northeastern Ireland and England. Established populations occur within two inlets in the border counties, Carlingford Lough (Counties Louth and Down) and Dundrum Bay (County Down), but G. vermiculophylla is absent from open coasts between these sites. Repeated surveys in Dundrum Bay showed variable abundances, with an increase in biomass between 2013 and 2016. Three populations were discovered in England, where this species had not previously been identified: Christchurch Harbour (Dorset), Brownsea Island in Poole Harbour (Dorset), and Kingsbridge Estuary (Devon). The Irish and English thalli belong to the most common, invasive cox1 haplotype 6. Using a combination of morphological observations and 10 microsatellite loci, we found that the population at Carlingford Lough included both reproductive haploid gametophytes and diploid tetrasporophytes and genetic signatures of sexual reproduction, but the populations at Christchurch and Brownsea displayed signatures of partial clonality. Genetic diversity was higher along the south coast of England as compared to the Irish population, consistent with patterns of diversity previously described for the European coasts. Finally, we also note the occurrence of a putative G. vermiculophylla population in Wales at Porthmadog, Gwynedd. As the sites in which we have now documented G. vermiculophylla in the British Isles also host shellfish aquaculture activities, our study is further evidence for the role of aquaculture in the spread of invasive species.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86318510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-21DOI: 10.7872/crya/v38.iss4.2017.325
P. Siver, Anne M. Lott
Abstract The distributions of scaled chrysophytes in 22 waterbodies from the eastern portion of Newfoundland, Canada, are described relative to environmental gradients. A rich and diverse flora of scaled chrysophytes was recorded that included 47 species from six genera, Mallomonas (n = 29), Synura (n = 7), Neotessella (n = 1), Chrysosphaerella (n = 2), Spiniferomonas (n = 7) and Paraphysomonas (n = 1). Combined with previous works, 57 species of scaled chrysophytes are now known from Newfoundland. On average, 15 species were recorded from each site, and 34 of the taxa were found in more than 10% of the sites. The most widely distributed species were Mallomonas duerrschmidtiae, M. galeiformis, Synura echinulata, S. sphagnicola, and S. petersenii sensu lato, each found in over 75% of the study sites. Seven additional species were found in over 50% of the localities indicating the rich diversity of the flora. One site is of particular significance as it represents the type locality for three species, including Mallomonas newfoundlandicus sp. nov. described in this communication, and represents the northern-most site harboring the marker taxon, M. binocularis. Expanded descriptions of M. maculata and Spiniferomonas abei are given, and evidence is presented that Synura synuroidea represents two distinct species. Overall, the flora reflects habitats that are acidic, dilute and contain moderate to high concentrations of humic substances. Since many of the species are diagnostic bioindicators, these organisms would provide a valuable resource for future paleolimnological studies aimed at understanding impacts from environmental stressors on Newfoundland lakes.
{"title":"The Scaled Chrysophyte Flora in Freshwater Ponds and Lakes from Newfoundland, Canada, and their Relationship to Environmental Variables","authors":"P. Siver, Anne M. Lott","doi":"10.7872/crya/v38.iss4.2017.325","DOIUrl":"https://doi.org/10.7872/crya/v38.iss4.2017.325","url":null,"abstract":"Abstract \u0000 The distributions of scaled chrysophytes in 22 waterbodies from the eastern portion of Newfoundland, Canada, are described relative to environmental gradients. A rich and diverse flora of scaled chrysophytes was recorded that included 47 species from six genera, Mallomonas (n = 29), Synura (n = 7), Neotessella (n = 1), Chrysosphaerella (n = 2), Spiniferomonas (n = 7) and Paraphysomonas (n = 1). Combined with previous works, 57 species of scaled chrysophytes are now known from Newfoundland. On average, 15 species were recorded from each site, and 34 of the taxa were found in more than 10% of the sites. The most widely distributed species were Mallomonas duerrschmidtiae, M. galeiformis, Synura echinulata, S. sphagnicola, and S. petersenii sensu lato, each found in over 75% of the study sites. Seven additional species were found in over 50% of the localities indicating the rich diversity of the flora. One site is of particular significance as it represents the type locality for three species, including Mallomonas newfoundlandicus sp. nov. described in this communication, and represents the northern-most site harboring the marker taxon, M. binocularis. Expanded descriptions of M. maculata and Spiniferomonas abei are given, and evidence is presented that Synura synuroidea represents two distinct species. Overall, the flora reflects habitats that are acidic, dilute and contain moderate to high concentrations of humic substances. Since many of the species are diagnostic bioindicators, these organisms would provide a valuable resource for future paleolimnological studies aimed at understanding impacts from environmental stressors on Newfoundland lakes.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75319972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-24DOI: 10.7872/crya/v38.iss3.2017.183
A. Glushchenko, M. Kulikovskiy, A. Okhapkin, J. Kociolek
Abstract Two new diatom species of the genus Aneumastus are described, A. laosica sp. nov. and A. genkalii sp. nov., based on light and scanning electron microscope observations. These species were found in Laos, and this is first finding of this genus from Southeast Asia. Almost all species from this genus were described and exist in Holarctic. Many species have restricted distributions and are known from fossil deposits, North America, Mongolia or local endemics of ancient lakes such as Baikal, Prespa and Ohrid. Diversity of Aneumastus species from these ancient lakes is higher than from waterbodies of the Holarctic region taken together. A few reports of this genus are from the southern Hemisphere (e.g. New Caledonia, Australia, Lake Tanganyika in Africa), but these taxon records are represented by a single valve only from every region and they require additional taxonomical investigation and verification to understand the full extent of the distribution of the genus.
{"title":"Aneumastus laosica sp. nov. and A. genkalii sp. nov. — Two New Diatom Species from Laos (Southeast Asia) with Comments on the Biogeography of the Genus","authors":"A. Glushchenko, M. Kulikovskiy, A. Okhapkin, J. Kociolek","doi":"10.7872/crya/v38.iss3.2017.183","DOIUrl":"https://doi.org/10.7872/crya/v38.iss3.2017.183","url":null,"abstract":"Abstract \u0000 Two new diatom species of the genus Aneumastus are described, A. laosica sp. nov. and A. genkalii sp. nov., based on light and scanning electron microscope observations. These species were found in Laos, and this is first finding of this genus from Southeast Asia. Almost all species from this genus were described and exist in Holarctic. Many species have restricted distributions and are known from fossil deposits, North America, Mongolia or local endemics of ancient lakes such as Baikal, Prespa and Ohrid. Diversity of Aneumastus species from these ancient lakes is higher than from waterbodies of the Holarctic region taken together. A few reports of this genus are from the southern Hemisphere (e.g. New Caledonia, Australia, Lake Tanganyika in Africa), but these taxon records are represented by a single valve only from every region and they require additional taxonomical investigation and verification to understand the full extent of the distribution of the genus.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82683358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-24DOI: 10.7872/crya/v38.iss3.2017.201
S. Muller, L. Rhazi, I. Soulié-Märsche, M. Benslama, Marion Bottollier-Curtet, A. DAOUD-BOUATTOUR, G. Bélair, Z. Ghrabi-Gammar, P. Grillas, L. Paradis, Hanene Zouaïdia-Abdelkassa
Abstract Characeae are macroscopic green algae present in the Maghreb (Morocco, Algeria, Tunisia) that are known since the 19th century works of Desfontaines (1800) and Braun (1868). Feldmann (1946) published the first regional synthesis, and this study provides a new Maghreb-wide synthesis of all collections made since 1784 (570 observations distributed over 464 sites). Each of the 31 reported species is described in detail with its diagnostic features, ecology and distribution in the three Maghrebian countries. Distribution maps distinguish between the three collection periods: 1780–1939, 1940–1979, and 1980–2016. An illustrated key is provided to help botanists working in the Maghreb to identify the taxa. From a biogeographical perspective, the Characean flora of the Maghreb is dominated by elements originating from northern (European) countries (61.3%) that include regionally very rare species such as Chara strigosa and C. tomentosa. The Mediterranean-Atlantic element is also well represented (32.3%), with some Mediterranean endemics (Chara imperfecta, C. oedophylla, C. vulgaris var. gymnophylla). Finally, two taxa that have an affinity for tropical conditions (Chara zeylanica and Lamprothamnium succinctum) extend to the southern Sahara. In North Africa, 14 species (7 Chara, 2 Lamprothamnium, 4 Nitella and 1 Sphaerochara) are threatened and raise issues about their conservation; three of these are particularly endangered: Chara imperfecta, C. oedophylla and Lamprothamnium papulosum.
特征是存在于马格里布(摩洛哥，阿尔及利亚，突尼斯)的宏观绿藻，自19世纪Desfontaines(1800)和Braun(1868)的作品以来就已为人所知。Feldmann(1946)发表了第一个区域综合，这项研究提供了一个新的马格里布地区自1784年以来所有收集的综合(分布在464个地点的570个观测)。报告的31种中的每一种都详细描述了其诊断特征、生态和在三个马格里布国家的分布。分布图区分了三个收集时期:1780-1939年、1940-1979年和1980-2016年。为帮助在马格里布工作的植物学家识别分类群，提供了一个图解的钥匙。从生物地理学的角度来看，马格里布的特色植物区系主要由来自北欧(欧洲)国家的元素(61.3%)组成，其中包括区域内非常罕见的物种，如Chara strigosa和C. tomentosa。地中海-大西洋元素也有很好的代表(32.3%)，有一些地中海特有的植物(Chara imperfecta, C. oedophylla, C. vulgaris变种裸子植物)。最后，两个与热带环境有亲缘关系的分类群(Chara zeylanica和lamprothamum succinctum)延伸到撒哈拉沙漠南部。在北非，14种(7种Chara, 2种lamprothamium, 4种Nitella和1种Sphaerochara)受到威胁，并提出了保护问题;其中三种特别濒临灭绝:不完美Chara imperfecta, C. oedophylla和lamprothamum papulosum。
{"title":"Diversity and Distribution of Characeae in the Maghreb (Algeria, Morocco, Tunisia)","authors":"S. Muller, L. Rhazi, I. Soulié-Märsche, M. Benslama, Marion Bottollier-Curtet, A. DAOUD-BOUATTOUR, G. Bélair, Z. Ghrabi-Gammar, P. Grillas, L. Paradis, Hanene Zouaïdia-Abdelkassa","doi":"10.7872/crya/v38.iss3.2017.201","DOIUrl":"https://doi.org/10.7872/crya/v38.iss3.2017.201","url":null,"abstract":"Abstract \u0000 Characeae are macroscopic green algae present in the Maghreb (Morocco, Algeria, Tunisia) that are known since the 19th century works of Desfontaines (1800) and Braun (1868). Feldmann (1946) published the first regional synthesis, and this study provides a new Maghreb-wide synthesis of all collections made since 1784 (570 observations distributed over 464 sites). Each of the 31 reported species is described in detail with its diagnostic features, ecology and distribution in the three Maghrebian countries. Distribution maps distinguish between the three collection periods: 1780–1939, 1940–1979, and 1980–2016. An illustrated key is provided to help botanists working in the Maghreb to identify the taxa. From a biogeographical perspective, the Characean flora of the Maghreb is dominated by elements originating from northern (European) countries (61.3%) that include regionally very rare species such as Chara strigosa and C. tomentosa. The Mediterranean-Atlantic element is also well represented (32.3%), with some Mediterranean endemics (Chara imperfecta, C. oedophylla, C. vulgaris var. gymnophylla). Finally, two taxa that have an affinity for tropical conditions (Chara zeylanica and Lamprothamnium succinctum) extend to the southern Sahara. In North Africa, 14 species (7 Chara, 2 Lamprothamnium, 4 Nitella and 1 Sphaerochara) are threatened and raise issues about their conservation; three of these are particularly endangered: Chara imperfecta, C. oedophylla and Lamprothamnium papulosum.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89760309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-24DOI: 10.7872/crya/v38.iss3.2017.253
P. Mutinová, Jana Kulichová, K. I. Ugland
Abstract This study was conducted to simultaneously investigate the spatial and temporal dynamics of diatom communities inhabiting two microhabitat types (Sphagnum periphyton and epipelon) in a peatland area of the Czech Republic. The changes in diatom community structure and corresponding diversity indices at both large (i.e., variation between sites) and small (i.e., variation between two microhabitats) scales were assessed through time. The results indicated clear spatial patterns at large, but not at small scale, and only limited seasonal dynamics in the diatom community. At the large scale, significant differences in diatom communities among sites were associated with both geographic position and environmental conditions (pH and conductivity). A significant effect of microhabitat type was detectable within sampling sites; the relationship between other factors and species data was not important on a small scale. The results of this study showed that both diatom diversity and community structure are good indicators of ecological heterogeneity associated with relatively high spatial and/or environmental variability. However, subtle differences in environmental conditions are hardly detectable or hidden using traditional diatom species.
{"title":"Temporal and Spatial Dynamics of Diatom (Bacillariophyceae) Communities in a Peatland Area","authors":"P. Mutinová, Jana Kulichová, K. I. Ugland","doi":"10.7872/crya/v38.iss3.2017.253","DOIUrl":"https://doi.org/10.7872/crya/v38.iss3.2017.253","url":null,"abstract":"Abstract \u0000 This study was conducted to simultaneously investigate the spatial and temporal dynamics of diatom communities inhabiting two microhabitat types (Sphagnum periphyton and epipelon) in a peatland area of the Czech Republic. The changes in diatom community structure and corresponding diversity indices at both large (i.e., variation between sites) and small (i.e., variation between two microhabitats) scales were assessed through time. The results indicated clear spatial patterns at large, but not at small scale, and only limited seasonal dynamics in the diatom community. At the large scale, significant differences in diatom communities among sites were associated with both geographic position and environmental conditions (pH and conductivity). A significant effect of microhabitat type was detectable within sampling sites; the relationship between other factors and species data was not important on a small scale. The results of this study showed that both diatom diversity and community structure are good indicators of ecological heterogeneity associated with relatively high spatial and/or environmental variability. However, subtle differences in environmental conditions are hardly detectable or hidden using traditional diatom species.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78852516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-24DOI: 10.7872/crya/v38.iss3.2017.267
M. Verlaque, H. Langar, A. Hmida, Christine Pergent, G. Pergent
Abstract The Indo-Pacific species Avrainvillea amadelpha (Montagne) A. Gepp & E.S. Gepp is reported for the first time from the Mediterranean Sea (Kerkennah Islands, Tunisia). The species is considered as introduced and invasive in the Hawaiian Archipelago. The Mediterranean specimens are studied and the reproductive structures are described and illustrated here for the first time. The possible origins and vectors of this introduction and the risk of propagation of the species in the Mediterranean Sea are discussed.
摘要在地中海(突尼斯Kerkennah群岛)首次报道了印度太平洋地区的Avrainvillea amadelpha (Montagne) A. Gepp & E.S. Gepp。该物种被认为是夏威夷群岛的引进和入侵物种。对地中海标本进行了研究，并首次对其生殖结构进行了描述和说明。讨论了可能的来源和媒介，以及该物种在地中海繁殖的风险。
{"title":"Introduction of a New Potential Invader into the Mediterranean Sea: The Indo-Pacific Avrainvillea amadelpha (Montagne) A. Gepp & E.S. Gepp (Dichotomosiphonaceae, Ulvophyceae)","authors":"M. Verlaque, H. Langar, A. Hmida, Christine Pergent, G. Pergent","doi":"10.7872/crya/v38.iss3.2017.267","DOIUrl":"https://doi.org/10.7872/crya/v38.iss3.2017.267","url":null,"abstract":"Abstract \u0000 The Indo-Pacific species Avrainvillea amadelpha (Montagne) A. Gepp & E.S. Gepp is reported for the first time from the Mediterranean Sea (Kerkennah Islands, Tunisia). The species is considered as introduced and invasive in the Hawaiian Archipelago. The Mediterranean specimens are studied and the reproductive structures are described and illustrated here for the first time. The possible origins and vectors of this introduction and the risk of propagation of the species in the Mediterranean Sea are discussed.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2017-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82202910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：