(PDF) Checklist of the genus Cosmarium (Zygnematophyceae, Streptophyta) from Brazil. were found to be the dominant taxa. Or in other words, Desmid, (order Desmidiales), order of single-celled (sometimes filamentous or colonial) microscopic green algae.Desmids are sometimes treated as a family (Desmidiaceae) of the order Zygnematales. elongatum and Euastrum octogibbosum). It can be found in ponds with scum on them. Aspergillus has both harmful ans useful activities from the view of the human. Their occurrence provides information on environmental conditions such as pH, conductivity and trophic state of a water body. biforme Nordst. Cosmarium bahianum sp. 2016-02-27 19:33:23 Birger Skjelbred - Updated media metadata for Cosmarium abbreviatum_1.jpg 2016-02-27 19:30:40 Birger Skjelbred - Added media: Cosmarium abbreviatum_1.jpg Nordic Microalgae is developed and operated by the Swedish Meterological and Hydrological Institute (SMHI) with funding from the Swedish LifeWatch project . crenata (Brébisson) Reinsch, Staurastrum gurgeliense Schimidle and Staurastrum hystrix Ralfs. A flora fitotélmica de desmídias esteve representada por quatorze táxons, tendo sido identificadas dez espécies, três variedades e uma forma taxonômica. Available from: http://floradobrasil.jbrj.gov.br/jabot/floradobrasil/FB107194 (accessed 2 Here we discuss the morphological and ecological aspects of 18 cyanobacteria species collected in tank bromeliads in Bahia State, northeastern Brazil. Algae from the phytotelms of two species of bromeliads, both exposed to the sunlight and to the shade, were sampled, and a number of abiotic variables were measured (temperature, pH, and electric conductivity of water). There is one or more chloroplast in each semi-cell with one or two pyrenoid. Samples were collected during the Summer (January to March 2007) and Winter (June to August 2007) using plankton net 20 µm size and fixed immediately in Transeau solution. Print version. oculatum were raised to the varietal level; E. ansatum var. Australia, tropical America, and equatorial Africa come to the fore as most pronounced. The newly described S. filiformis is primarily characterized by a high cell length to breadth ratio (17–31) and a parietal chloroplast with 3.5–8.5 turns. Some of the species recorded by Förster are apparently endemic as they have not yet been reported as occurring elsewhere. pseudopyramidatum, C. pseudopyramidatum var. Raciborski, M. (1889) Desmidyje nowe. We describe morphology in the asexual reproductive stages, resulting from an early division before complete cell development, but also results from the number (3, 4, or 7), the length, and the plane of projection of the arms (divergent, moderately divergent to straight, and slightly convergent). RESUMO – O inventário taxonômico das desmídias (Zygnemaphyceae) dos rios na área de abrangência da Usina Hidrelétrica de Salto Caxias, estado do Paraná, Brasil, foi baseado em amostragens mensais, em 15 estações de coleta, durante o período de fevereiro de 1997 a fevereiro de 1998. Finally, the find of those Spirotaenia species support the notion that bromeliad tanks may be an interesting habitat for rare desmids or even new species, Desmídias perifíticas de cinco lagoas do Distrito Federal, Brasil: I -Gênero Cosmarium Corda ex Ralfs. The samples analyses allowed the description of 31 taxa distributed among 10 genera. The economic importance of algae is very diverse. SEM studies of desmids were first attempted by Lyon (I 969) who studied the external morphology of the walls of Cosmarium botrytis, Pickett-Heaps (1973) presented stereo-scanning micrographs of two species of Staurastrum, one species of Cosmarium With the objective of investigating the taxa of Cosmarium, four collection stations along the Corumbá Reservoir were set up. World-wide electronic publication, National University of Ireland, Galway. Cosmarium is a very specious artificial genus, most probably of polyphyletic origin.3‒5 Due to the disproportionate number of species included in the genus and its very much suspected artificiality, there ... wall decoration25,26 has so far provided very important and useful With regard to their seasonal The biological This divides them in to two distinct halves called semi- cells. The results of this study provide important knowledge regarding the species composition of microalgae in bromeliad phytotelmata found in the Philippines. Cosmarium pygmaeum (top view) Cosmarium pyramidatum var. The results have shown that exposure to the sun and the shape of the reservoir determined the abundance of desmids, which was associated with the water acidity in the bromeliad phytotelms. (Floristic composition of Desmidiales (except Cosmarium) on a Brazilian subtropical lake). Genus: Cosmarium. Cosmarium pyramidatum var. Taxonomic notes and ecological information are provided for all taxa. validius. Forzza, R.C., Costa, A.F., Leme, E.M.C., Versieux, L.M., Wanderley, M.G.L., Louzada, R.B., Monteiro, R.F., Judice, D.M., Fernandez, Studies on cyanobacterial diversity in bromeliad phytotelmata are scarce, despite their ecological importance in this environment, including N 2 fixation for bromeliad nutrition. (2010) Cosmarium Corda ex Ralfs (Desmidiaceae) em um lago elegantissimum f. elegantissimum, Staurastrum leptocladum var. pseudopyramidatum, C. pseudopyramidatum var. Contributions from the Gray Herbarium of Harvard University 129: 31-35. Aerial algae and pro-tozoa were most abundant and diverse in North Central Texas, 0-8 cells/ft3, less abundant and diverse in subspeciosum f. brasiliense e C. subspeciosum var. morphology, which is of much importance to taxonomists. Most taxa recorded are first records for Chiang Mai Province, and 8 species, Aphanothece conferta, Aph. zygnemataceae]. Recent taxonomic studies show that the main microalgal groups reported from bromeliad phytotelmata are chlorophytes (Ramos et al. The Zygnematophyceae was the dominant class, with 13 representatives, that are the first citations for the State and for the country. var. maximum Börgesen, C. quadrum Lundell var. Brook, A.J. In the present study, Spirotaenia species were collected from Alcantarea nahoumii tanks, an endangered Brazilian bromeliad, Access scientific knowledge from anywhere. (2012) New and remarkable desmids (Zygnematophyceae, Streptophyta) from Europe: taxonomical notes Absence of zoospores and formation of aplanospores is most probably due to the adverse conditions of phytotelm in the semi-arid area such as little water stored at bromeliads which can quickly evaporate due the high environmental temperature. Cosmarium Corda ex Ralfs, Hoehnea 38(4): 527-552. desmids Micrasterias americana and Euastrum germanicum, and in the chlorococcaleans Desmodesmus perforatus and Pediastrum simplex. 133 pp. hexagonum (Elfving) G.S. SEM studies of desmids were first attempted by Lyon (I 969) who studied the external morphology of the walls of Cosmarium botrytis, Pickett-Heaps (1973) presented stereo-scanning micrographs of two species of Staurastrum, one species of Cosmarium — Aquatic Ecology 31: 73-78. https://doi.org/10.1111/j.1365-2818.1896.tb00891.x, Available from: http://floradobrasil.jbrj.gov.br/jabot, Jardim Botânico do Rio de Janeiro. 1 in Stamenković et al. Foram iden-tificados, descritos e ilustrados dezoito táxons, sendo três espécies, quinze variedades e uma forma taxonômica. With the phenomenal increase in urban population and industrial growth during the past few decades, some of the major problems of a basic nature confronting mankind are those of quantity and quality of food, feed, drinking water, disposal of sewage and industrial wastes, and of proper conservation of soils and waters. Bl). New Zealand/Southern Australia, and North America. of the biological species concept is seriously hampered by lack of sexual reproduction in many species. rostafinskii (Gutw.) & Moura, C.W.N. Nestes ambientes, foram coletadas ao acaso vinte e cinco amostras através do Estado do Rio de Janeiro. A total of 19 desmids were identified, 18 from Serra da Jiboia (granite outcrops) and one from Itaberaba (in the "Caatinga" dryland domain). Além do predomínio das Zygnemaphyceae, foram também registradas outras cinco classes de algas neste tipo de ambiente: Chlorophyceae, Cyanophyceae, Bacillariophyceae, Xanthophyceae e Dinophyceae. Laura Rodrigues 2007 and 2008. nov. is described from samples collected from a bromeliad tank (phytotelmata) in a “restinga” area located at Salvador, Bahia State, northeast Brazil. Throughout the entire sampling period, classes with higher species richness, especially due to A. nahoumii, were Zygnematophyceae, Cyanophyceae and Chlorophyceae, which accounted for about 80 % of all species inventoried. & Moraes, M.A. Out of these, 13 taxa (65%) are cited for the first time in the State of Paraná: C. bireme var. Usually it occurs in abundance in mucilaginous masses along the wall of reservoirs and water tanks especially in winter'. Several microalgal species such as Chlorella, Scenedesmus, Desmodesmus, Neochloris, Chlamydomonas, Nitzschia, and Cosmarium have been applied to various types of wastewater treatments coupled with biofuel This taxonomic survey (1940) Studies in the Bromeliaceae -XI. galeritum, C. montrealense Croasdale, C. pseudopyramidatum P. Lundell var. ), and other Desmidiaceae (Zygnematophyceae, Streptophyta) and used to assess phylogenetic relationships in the family. Analyses of single genes and of a concatenated data set (3260 nt) established 10 well-supported clades in the family with Cosmarium species distributed in six clades and one nonsupported assemblage. Deste total, dezenove continham representantes de desmídias. Thus, due the importance of floristic studies about the Paranaense desmid flora, and the knowledge about the biogeographic distribution of the taxon in continental aquatic environments, besides the great species diversity within Cosmarium, this study aimed to taxonomically document the occurrence of the taxa belonging to this Cosmarium botrytis was the most common taxon encountered, whereas species of Euastrum, Pleurotaenium and Micrasterias were only recorded at single localities. This study expands our knowledge of cyanobacteria in bromeliad phytotelmata and provides new information on their communities, including the environmental characteristics where each species was found. demonstrated cases of close affiliation between morphologically highly different taxa and, contrary, examples of little relationship Cosmarium, while defended from predation, is a poor resource competitor for phosphorus compared to Ankistrodesmus as revealed by growth kinetics (Appendix A: Fig. (1981) The biology of desmids. Cosmarium bahianum sp. Order zygnematales [excl. Phytotelmata are a unique habitat for the existence of new and rare species of microalgae. Abstract. Cosmarium bahianum belongs to the group of placoderm desmids, and is mainly characterized by rather small, smooth-walled, but remarkably punctate cells that are elliptic to subtriangular in apical view, as well as by a globose to elliptical, smooth-walled zygospore. nov. is described from samples collected from a bromeliad tank (phytotelmata) in a “restinga” area located at Salvador, Bahia State, northeast Brazil. The so-called from periphyton samples collected in the Pantanal dos Marimbus in the Chapada Diamantina, Bahia State, Brazil. Inhabiting of bromeliad tanks by algae and other organisms is a very interesting phenomenon. formosulum, C. impressulum var. Smith, L.B. (Eds.) Laura Rodrigues Sampling of water stored in bromeliads was carried out quarterly between 2014 and 2016, and abiotic variables and morphometric attributes of bromeliads were measured. The material studied came from 120 samples collected in january and march of 2009 (summer) and june and july of 2009 (winter). Only 6.5% (two taxa) were recorded in the three habitat types. http://www.algaebase.org (accessed 3 September 2015). Key words: artificial lake, desmids, Paraná. Taxonomic hierarchy Kingdom Plantae Subkingdom Viridaeplantae Division Charophyta Class Zygnematophyceae Order Zygnematales Family Desmidiaceae Genus September 2015), Flora of New Zealand: Freshwater algae, Chlorophyta, Desmids. Among the few published studies are those of Gebühr et al. Blackwell Scientific, Oxford, 276 pp. Green Algae as Ancestors of Land Plants. The cells posses a three layered transversely segmented walls with vertical poles arranged in a definite pattern. Of those 18 taxa, 8 represent new records for the state of Paraná: C. angulosum Bréb. Arguments for a tropical origin of the desmids The geographic distribution of some well-recognizable The paramecium is larger than the amoeba. When decapsulated dideltiforme f. elongatum is raised to Euastrum ruzickae and Tetmemorus flensburgii is separated from Tetmemorus brebissonii. ), Euastrum (9 spp. (1986) Flora of New Zealand: Freshwater algae, Chlorophyta, Desmids. tes graus de impacto ambiental na fase de águas altas e baixas de um rio de planície de inundação (rio Capivara Grande, Camaçari, Bahia) visando relacionar as mudanças na estrutura taxonômica com as condições ambientais. (g) Algae Used in Aviation: In addition, an evaluation of the morphological characteristics of zygospores can assist in separating species that overlap morphologically (Brook 1981;Neustupa & Skaloud 2007;Neustupa & Stastný 2006). This study aimed to investigate fatty acid content and productivity of the insufficiently investigated group of freshwater microalgae—desmids (Zygnematophyceae, Streptophyta)—and to estimate their commercial potential. In the present study, Spirotaenia species were collected from Alcantarea nahoumii tanks, an endangered Brazilian bromeliad species. Some taxa were observed using scanning electron microscopy (SEM). South America, whereas temperate Eurasia, with respect to the other continents, is mainly negatively characterized. Journal of the royal Microscopical Society 16: 149-165. The objective was to expand the knowledge base regarding the genus Cosmarium (Desmidiaceae, Zygnematophyceae). The preparation of the material for SEM examination followed the protocols of, ... Notes: This species was recently described from material collected in bromeliads at Parque das Dunas (Sand Dunes Park), Salvador, Bahia State, Brazil, ... An interesting feature observed in the population from the municipality of Curaçá, in the semiarid region of Bahia State with low rainfall (INEMA 2019), was the presence of a thick mucilaginous layer enveloping Euastrum westenii (Fig. From the Netherlands, four desmid species are described as new to science: Cosmarium pseudodifficile, Cosmarium pseudoformosulum, Cosmarium pseudoreniforme, and Cosmarium turpiniiforme. The results illustrated that 118 taxa classified to eight major lineages including Chlorophyta (35 taxa), Euglenophyceae (31 taxa), Cyanobacteria (18 taxa), Bacillariophyceae (17 taxa), Zygnematophyceae (13 taxa), Cryptophyceae (2 taxa), Synurophyceae (1), and Xanthophyceae (1). ABSTRACT – Desmids (Zygnemaphyceae) in the area of the Hydroelectric Power Plant in Salto Caxias, Paraná, Brazil, I: genus Cosmarium. The so-called arctic-alpine desmid flora may be encountered on all continents, provided that adequate minimum temperatures occur. Andrea Jakobson Estúdio Editorial & Jardim Botânico do Rio de Janeiro, Rio de Janeiro, seems to be determined microclimatologically rather than macroclimatologically. The step limiting synthesis of starch is the AGPase-catalysed reaction of glucose 1-phosphate with ATP, resulting in ADP-glucose and pyrophosphate ( Stark et al. ... From this study, the knowledge on genus Spirotaenia in Brazil has been expanded to four species currently confirmed: Spirotaenia closteridia, S. condensata, S. endospira, and S. filiformis. Compared with other groups of unicellular freshwater algae, desmids lend themselves well to biogeographical studies since, at species level, identification is often relatively easy, whereas high ecological demands use to curtain their geographical distribution. Pela arrumação de suas folhas as bromeliáceas permitem a retenção de água nos imbricamentos das mesmas, onde é possível o desenvolvimento de uma ficoflórula associada aos fitotelmatas (tanques de bromélias). The biology of desmids. zygnematophyceae) para a Bahia e o Brasil. Samples collections were carried out between 2002 to 2003, 2007 and 2008, in the lake littoral zone with phytoplankton net. In: John, D.M., Whitton, B.A. important genera include Cosmarium with 25 species, Closterium with 3 species, Euastrum (2 species), Staurastrum (11 species), Micrasterias (1species), Desmidium (1 species), Arthrodesmus (1 species), Staurodesmus (1species) and Xanthidium (1 species). Species diversity was greatest in the aufwuchs at all sites and was lower in the spring ponds than in the lakes. Its distribution seems to be determined microclimatologically rather than macroclimatologically. crassum (West & West) Grӧnblad., Micrasterias truncata (Corda) The result suggests that zygospore morphology can be a significant phylogenetic signal in desmid taxonomy. The microalgae communities of the phytotelmata varied among vegetation formations, with one tank bromeliad, Alcantarea nahoumii, with more complex architecture (higher number of leaves and thus more cavities), being distinguished by its high species richness (73 taxa). We identified, drew, and described 18 taxa of Cosmarium. Šťastný, J. nov. was also recorded in this area and described as new species. var. Pamietnik Akademii Umiejetnosci w Krakowie. The new species was collected from Hohenbergia littoralis J.B.Smith, an endangered endemic bromeliad species from the Brazilian Restinga with distribution restricted to the north coast of Bahia. huzelli, C. commissurale, C. formosulum var. Taxonomic studies on phy-totelm algae are, in general, scarce, but especially are so in semi-arid regions such as the Caatinga. Four taxa (Actinotaenium riethii, Closterium pseudocostatum, Cosmarium discrepans and C. hostensiense) are newly described and the name of one taxon (Cosmarium lenzenwegeri) is recombined. Email This BlogThis! nov. was also recorded in this area and described as new species. at species level, identification is often relatively easy, whereas high ecological demands use to curtain their geographical ovale, C. depressum (Nägeli) Lundell var. semicirculare, M. torreyi var. galeritum Nordst. prescottii, and E. informe var. Actinotaenium, Cosmarium e Heimansia). & Bicudo, C.E.M. Scottish Biodiversity List of species of principal importance for biodiversity conservation: ... Cosmarium pseudoornatum B. Eichler et Gutw., 1894. Also well typified are Eastern Asia, New Zealand/Southern Australia, and North America. desmos, bond or chain), are an order in the Charophyta, a division of green algae in which the land plants (Embryophyta) emerged. Observation of desmids in a scanning electron microscope is a problem due to abundant extracellular mucilage. Here, we sampled 60 bromeliads in the Itaberaba's municipality, Bahia state, and we identified Rhopalosolen cylindricus, a green algae species not previously recorded for Brazil. The description of the life cycle is based on isolated populations from Mexico studied in light and scanning electron microscopy. A total of 15 algal taxa were taxonomically identified from the collected samples, of which six species (five genera) are classified as members of Cyanophyceae, four species (three genera) belong to Zygnematophyceae, three species (three genera) to Chlorophyceae, and one species (one genus) each for Euglenophyceae and Klebsormidiophyceae. var. bromeliads exhibited little similarity in species composition, with only one species (Phacus polytrophos) occurring in all four species. 42(7): 225-255. genera that had more representative number of species were Closterium (8), Micrasterias (6) and Actinotaenium (4). Its distribution The qualitative analysis was done by optical microscopic on non-permanent slides. From our results, we recommend CTAB, which is readily available, inexpensive, does not require special safety handling, and is able to remove many adhering bacteria. validius. The microscale of bromeliad tanks may be repeatable in macroscale (lakes, ponds, reservoirs). For want To this end, increasing photosynthetic efficiency is an interesting strategy that can be accomplished by producing truncate antenna complexes, resulting in better-adapted species for utilizing sunlight without metabolic inhibition ( Melis, 2012 ; Perrine et al. We report here seven interesting taxa of Euastrum from the periphytic material of three macrophyte species (Cabomba haynesii, Eichhornia azurea, and Utricularia foliosa) occurring in the Chapada Diamantina, Bahia State, Brazil. brasiliense, C. subspeciosum var. This study describes the sexual and asexual reproduction of S. gracile in culture and emphasises the importance of characters observed in the fully developed stage of vegetative individuals and zygospores. Cosmarium is a genus of fresh water organisms belonging to the Charophyta, a division of green algae from which the land plants (Embryophyta) emerged. Additionally, our data provide an expansion on the known distribution of the species and their morphological and reproductive aspects as well as microhabitat conditions and frequency of occurrence. Diagnostic descriptions and keys are presented to distinguish the different species of phytotelm algae. They utilise the carbon dioxide released by the various animals during their respiration and give off oxygen during photosynthesis and thus the water is purified. You can request the full-text of this article directly from the authors on ResearchGate. (2014) with Tillandsia multicaulis (Bromeliaceae) in Mexico. This project aims to carry out a floristic survey of algae and cyanobacteria that occur in bromeliad tanks from different areas of the Bahia State, Brazil, Goal: This project aims to carry out a floristic survey of Euastrum that occur in periphytic material collected from three macrophyte species (Cabomba haynesii, Eichornia azurea and Utricularia fol, Analisar a variação temporal e espacial da estrutura da comunidade de desmídias por meio da composição, riqueza, diversidade e abundância de espécies em estações de amostragens em áreas com diferen, In fact, I am working on some of the freshwater groups and coordenating the other ones and the marine forms.
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