An evidence describes the source of an annotation, e.g. Reset your Router – Loons are present in the winter and spring months. The Northern Dvina is the western border for Salamandrella keyserlingii. Mean zoobenthos density and biomass is 6800/m2 and 11.3 g/m2, respectively. Many of us are looking to unique names - names that will make our daughters stand out. Picking a good name for your daughter is hard - you, and your baby girl, will have to live with it for the rest of your life. Caden dropped three places, Elijah overtook Grayson and Lucas , and Noah gained traction. Cyclotella has a steeper consumption vector than Asterionella; that is, Cyclotella consumes relatively more phosphorus than silicate, while Asterionella consumes relatively more silicate than phosphorus. In the autumn, the shortening days and declining temperature lead to a weakening of the stratification, deeper wind mixing, and the restoration of the depleted nutrients: by the late autumn, diatoms, including Aulacoseira and Asterionella, are generally the most abundant algae, dominating the shrinking residual biomass. Asterionella ralfsii - Species Dictionary - UK and Ireland : iSpot Nature - Your place to share nature. Here, both species may coexist. -elle names are used more often as feminine names. Sometimes only the tips are connected, so they form a zigzag pattern (e.g., Tabellaria spp. A problem occurred while submitting your feedback. The best nicknames always require a little work to come up with. Plainly, the greater is the particle-specific ws, the greater is the dependence upon a deep mixed layer for its maintenance in suspension and the greater is its sensitivity to density stratification and the consequent contraction of hm. Top 100 names from around the world + Penpal Statistics @ Students of the World. Walter and Mahesh (2000) screened 11 marine diatoms for their antimicrobial capacity against 8 pathogenic fungi, either mold (A. niger), yeast (Cryptococcus albicans, Cryptococcus galbrata, Cryptococcus krusei, Cryptococcus tropicalis, Cryptococcus neoformans), or dermatophyte species (Microsporum nanum, Trichophyton mentagrophytes). 1. Several more western or southern species are found in the lower portion of the river through Lake Barkley: alligator snapping turtle, Ouachita false map turtle, and slider. 基礎異名 その他異名 和名 ホシガタケイソウ (田中, 2002) 類似種との区別点 星型（まれにジグザグ状）の群体を形成する。 The algae shown are represented as follows: Ana = Anabaena flos-aquae, Ank = Ankistrodesmus falcatus, Aph = Aphanizomenon flos-aquae, Ast = Asterionella formosa, Cer = Ceratium hirundinella, Chla = Chlamdomonas, Chlo= Chlorella, Cry = Cryptomonas ovata, Din = Dinobryon divergens, Eud = Eudorina unicocca, Fra = Fragilaria crotonensis, Lim R = Limnothrix redekei, Mel = Aulacoeira subarctica, Mic = Microcystis aeruginosa, Mon = Monodus, Pla AG = Planktothrix agardhii, Per = Peridinium cinctum, Rho = Rhodomonas pusilla, Scq = Scenedesmus quadricauda, Sth = Stephanodiscus hantzschii, Syn= Synecococcus, Tab = Tabellaria flocculosa, Vol = Volvox aureus. Subsurface deposit feeding tubificid worms (Limnodrilus, Branchiura) are present but not abundant. Report on the diatomaceae collected by H.M.S. Shape Cells linear and bilobate in valve view, with a larger, spatulate 'head pole' and a smaller spatulate 'foot pole'. rostrata (Hustedt) Kingston nov. comb.—Basionym, Achnanthes clevei var. Liste d'espèces. American Naturalist 116: 362–393, with permission from The University of Chicago Press. 1961, 1967; Anufriev et al. Number Of 50Km Squares 3. The downstream ecosystems have changed due to human use of the floodplain (Vekhov 1990, 1993) and Utricularia, Myriophyllum, Potamogeton, Nuphar, and Butomus are becoming rare. In girdle view cells expand towards both ends of the valve. 2002), mainly consisting of diatoms and green algae, with Asterionella and Aulacoseira being dominant, and Cyclotella and Stephanodiscus occurring in some areas. Global Biodiversity Information Facility. Chang . In experiments, Asterionella remained viable in the feces of waterfowl for a maximum of 20 h, perhaps corresponding to 2200 km flight. Lykaios: This is a Greek name derived from a Greek word that means wolf. This Genus currently has 7 taxonomic siblings (listed below) and an expanded tree of 8 members (self + siblings + sub-siblings). ; Asterionella is a word polysyllabic because it has four or more syllables; Words that rhyme with Asterionella Depletion from suspension is a first-order process, analogous to dilution; the rate of the decline in the suspended population is described by an exponent (−rS), equivalent to −(ws/hm). Improve this question. Cyprinidae (44 species, primarily minnows, shiners, chubs, and daces) and Percidae (43 species, primarily darters) are the two most diverse families, followed by suckers (17 species), sunfishes (13 species), and catfishes (11 species). However, it is not a legal authority for statutory or regulatory purposes. In the southern, middle and partially in the northern taiga, there are 51 species compared to 38 species in downstream areas. Bald eagles and ospreys are now a common site in the lower half of the basin. C.S. Scientific name Scientific name (unprocessed) Subspecies Species Genus Family Order Class Phylum Kingdom Identified to rank Name match metric Lifeform Common name (processed) Species subgroups Species lists. Species recognized by Hong Kong Species List. In contrast, partridges have moved south, while they were earlier typical in zones up to the sub-taiga (Kochanov 2001). Protein sets from fully sequenced genomes. The most abundant turtles throughout are common snapping turtle, stinkpot, mud turtle, common map turtle, midland painted turtle, spiny softshell, and smooth softshell. Moreover, there are indications that the microbial food webs in the littoral zone of lakes might differ from the pelagic realms, potentially because of a higher influence of bacteria and protists that originate from biofilms (e.g., on macrophytes). Gambierdic acid A and B inhibited fungal growth at concentrations of 0.2–0.78 μg/mL, A. niger and A. fumigatus being the most sensitive species (Nagai et al., 1993). Nevertheless, the onset of density stratification, especially in smaller lakes, is generally the principal correlative of the culmination of diatom abundance (as, for instance, in the so-called ‘spring bloom’) and settlement from suspension contributes prominently to their subsequent demise. Information about Asterionella. Then, in mid-April, when the work of the wind is no longer sufficient to discharge the increasing buoyancy of the heat flux to the surface, the lake will become thermally stratified. Rank Species. Cyclotella has a lower R * for silicate, while Asterionella has a lower R * for phosphorus. Finally, the effect of enhanced mixing weakens the light income but gradually restores the resource base. Yet the pattern is robust and is it amenable to diagrammatic summary (Fig. This is predicted to happen when the silicate availability is low. As for boys' names, Liam took the number one spot for the second year in a row. The Northern Dvina phytoplankton is typical of lowland rivers (Bryzgalo et al. Common-Name. The list above refers to the top 1,000 baby boy names from 2019, as determined by birth certificate data. Karayevia clevei var. Today systematists believe that the monoraphid condition was multiply derived from a primitive biraphid condition (Kociolek and Williams, 1987; Kociolek and Rhode, 1998). There are two possible scenarios: (1) One of the species has lower R* values for both resources than the other species. No two years will be exactly the same, and the relative proportions of simultaneously dominant and codominat species will fluctuate. Nevertheless, the correlation of function and the dynamic response to environmental change is an extremely satisfying one. If hydraulic retention time is increased to greater than about 20 days, plankton blooms occur (U.S. Army Corps of Engineers, unpublished data). They are oxygenic photosynthetic organisms. Englisch-Deutsch-Übersetzungen für common name im Online-Wörterbuch dict.cc (Deutschwörterbuch). Dust containing diatom frustules can certainly be blown across the Atlantic Ocean. The most popular given names vary nationally, regionally, and culturally. Designations N/A. Reynolds, in Encyclopedia of Inland Waters, 2009. In the estuary, phytoplankton includes Fragilaria, Diatoma, Nitzschia, Scenedesmus and Pediastrum. Novocaine is a popular song by Asterionella | Create your own TikTok videos with the Novocaine song and explore 0 videos made by new and popular creators. Asterionella formosa is known to be susceptible to the chytrid fungus Zygorhizidium planktonicum. 1 Reply Last reply Reply Quote 0. 100 Common Greek Last Names and Their Meanings. Freshwater microbial food webs should not be regarded as an abstract set of biotic interactions only, but must be understood in the context of a heterogeneous physicochemical environment. Several species are now thought to be extinct in the drainage, including the speckled chub, stargazing minnow, hairlip sucker, crystal darter, and longhead darter. Asterionella synedraeformis. Whenever this is the case, competing species may coexist. Common Name N/A. Provide … Beaver, muskrat, and river otter also are common, particularly in the tributaries and embayments. Die Zertifizierungsstellen lesen diesen Common Name aus dem CSR aus und stellen das Zertifikat auf diesen Common Name aus, daher ist es wichtig das der Common Name immer die Webseite oder Domain ist die Sie absichern möchten, … Further north, the avifauna is poorer, and in the lower reaches there are 107 species. Systems used to automatically annotate proteins with high accuracy: Select one of the options below to target your search: Select item(s) and click on "Add to basket" to create your own collection here (400 entries max). Many species of diatoms stay connected after cell division and form colonies or long chains in the shape of filaments or ribbons (e.g., Fragilaria). Ebene und Domains der 3. Many ducks migrate up to 4800 km but with many stops. The partial independence of the two axes is conveniently emphasized by the inclusion of the winter “loop” when the light income falls below a level that will support new growth, while the system may be accumulating new external resources, only after I** has increased to the point where net growth can be supported at the cost of net resource reduction. By continuing you agree to the use of cookies. So far, the theory is similar as competition for a single resource. Zooplankton is similar to that of the Northern Dvina. Select (if applicable) the providers you would like to notify. Peak Popularity: Bowen is a newly popular male name in the U.S., debuting in the top 1000 in 2011 and reaching 431 in 2018. We also provide a baby name search function that allows a user to see where a given boy's name ranks historically. Gatunkiem typowym jest A. formosa.Jeden z częstszych przedstawicieli słodkowodnego fitoplanktonu, czasem tworzący zakwity.Nie będąc typowym składnikiem fitobentosu, uwzględniana w niewielu wskaźnikach okrzemkowych.Komórki promieniście połączone w cenobia (dając wygląd gwiazdy), które pod … Even under low nutrient conditions, water retention time may be the overriding factor for productivity (Kimmel et al. The Common Name (AKA CN) represents the server name protected by the SSL certificate. Doch nun scheitert es bereits daran, dass ich nicht die Namen aller Geräte, die sich z.B. Ebene mit WWW um die zweite Form kostenlos. Yet it is well recognized that the dominance moves among different species through time and that, in a given system, the sequence will be similar from one calendar year to the next. It exists in several forms of gambierdic acids, depending on atoms and chemical groups present in the polyether chain. In the Northern Dvina, there are 11 species of amphibians and reptiles (Anufriev & Bobretsov 1996; Kuzmin 1999). Reproductive Habits Notholca eggs are carried for a relatively short time compared to other rotifers (3). In names for amides, the -ic acid of the common name or the -oic ending of the IUPAC for the … 15.13: Amides- Structures and Names - Chemistry LibreTexts Skip to main content J. Pernthaler, T. Posch, in Encyclopedia of Inland Waters, 2009. In the middle of the 20th century, new species were introduced: muskrat, American mink and raccoon dog, and European beaver were reintroduced. In the area near the estuary, there are 122 species of macroinvertebrates (Semernoy 1990), including sponges, oligochaetes, leeches, molluscs and chironomids. The greatest diversity and density of benthic invertebrates occurs in transitional zones that contain both consolidated and unconsolidated substrates. For example, phytoplankton cells may be surrounded by a species-specific zone of enhanced DOC concentration (the phycosphere), which can be detected and tracked by motile chemotactic bacteria. Nagai et al. Help pages, FAQs, UniProtKB manual, documents, news archive and Biocuration projects. It will provide us with one of the most important clues to understanding how local diversity is maintained in nature. Reservoir riverine zones are dependent on upstream releases, but productivity is usually low because of the high turbidities. Copyright © 2021 Elsevier B.V. or its licensors or contributors. Despite its celebrated species richness, the phytoplankton is usually dominated by very few genera at a time (it has been suggested that 95% of the extant standing biomass will be incorporated in no more than eight species at any one time; often it will be in rather fewer, as few as one or two; Reynolds, 1997b). Allochthonous inputs may still provide the greatest amount of organic matter, creating net heterotrophy; however, autochthonous primary production probably drives most water-column metazoan production (Thornton et al. (B) Some of the algal species that might be selected are shown in an analogous matrix that is based purely on shape- and size- characters of the algae concerned (sv−1 versus msv−1, where s is the surface area of the alga in μm2, v is its volume in μm3, and m is the maximum length dimension, in μm). The shapes of diatom cells are elongated, elliptical, square, round, or triangular. 2.6). In oligotrophic lakes, small, near-neutrally buoyant algae may proferate. Weak winds and a shrinking mixed layer depth are not, however, an unmitigated benefit to phytoplankton. J. Padisák, in Encyclopedia of Inland Waters, 2009. Free and Open Access to Biodiversity Data. On the other hand, colonial diatoms such as Fragilaria or Asterionella may provide a surface for the attachment of choanoflagellates (e.g., Salpingoeca) that are filter-feeding on planktonic bacteria. The ecosystem of the main-stem Cumberland River is now almost completely dominated by impoundments. A especie Asterionella formosa é susceptible ao fungo quitridiomicota Zygorhizidium planktonicum. The diatoms are one of the largest and important groups of freshwater or marine organisms. Flickr CC BY 2.0 . In the north, birds of Siberian and Arctic origin are common, including waterfowl and sandpipers. Using a method based on supercritical CO2 extraction, Mendiola et al. Freshwater araphid diatoms, mainly habit images: (A) light micrograph (LM) of cleaned diatom frustules from a riverine benthic assemblage containing Pseudostaurosira (1), Staurosirella (2), and Synedra (3); (B) scanning electron micrograph (SEM) of epiphytes on the green alga Cladophora glomerata, including Diatoma (1); note the attachment of cells by mucilage pads; (C) LM at low magnification of a mixed collection of preserved phytoplankton including stellate Asterionella (1) and zigzag Tabellaria (2) colonies; (D) LM at low magnification of a stellate colony of Asterionella formosa; (E) LM at low magnification of a “pin-cushion” colony of Synedra; (F) LM at low magnification of a ribbon-shaped colony of Fragilaria crotonensis, in which the cells are held together by interlocking siliceous spines; note chloroplasts in the LMs of preserved diatoms. Asterionella settles out of a mixed depth, which is too truncated to keep it in suspension, leaving the clear water open to the establishment of such algae as Rhodomonas and Monodus, Cryptomonas, and of the motile colonies of Eudorina. English. A pycnocline reaching to within 3 m of the surface will impose a sinking loss rate of rS ≥ −0.1 day−1, which must be countered by a comparable rate of cell recruitment (r′) if a net collapse of the standing population is to be avoided. produces polyol compounds (karatungiols A and B) that inhibit A. niger (Washida et al., 2006). In the Northern Dvina delta, subject to brackish water, Triglochin, Mertensia and Zannichelia occur. On average, rotifers constitute 96% of numbers. 2002), while zoobenthos densities increase due to higher numbers of oligochaetes. Cells are joined at the 'foot pole' to form stellate colonies. The Cumberland River is part of the Tennessee–Cumberland freshwater ecoregion, which contains the greatest diversity of aquatic biota in the United States (Abell et al. Group diatom. Many of the species that existed in the lotic conditions prior to impoundment have been displaced or are now limited to tributaries. A wide variety of diatoms (Navicula, Asterionella, Fragelaria, Melosira, Synedra), green algae (Scenedesmus, Pediastrum), and cyanobacteria (Anabaena, Oscillatoria) are the dominant midsummer phytoplankton. acaroides Lemmermann According To NZFLORA (2012-) New Zealand Plant Names - Name based concepts. As a result of introductions, river fishes also include Danubian bream, asp, spined loach, northern whitefish, zander and pink salmon. There are no common names associated with this taxon. Another way to estimate the most common first names in America is to look at names of babies registered at birth with the Social Security Administration (SSA). Pronounced layerings of pro- and eukaryotic microbial species are also observed along oxyclines in meromictic lakes. According to Korde (1959), Vychegda River phytoplankton includes 110 algal taxa and 13 Cyanobacteria. Challenger during the years 1873-1876. and fishes. Chlorella has lower R* values for both phosphorus and light than Monoraphidium. The thick solid lines indicate the zero net growth isoclines of the species. We'd like to inform you that we have updated our Privacy Notice to comply Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. # (b) Reproduced from Tilman D (1980) Resources: A graphical-mechanistic approach to competition and predation. Following impoundment, phytoplankton became an important part of primary production. In hilly reaches, Ulothrix, Cladophora, Spirogyra, Oedogonium and Chantransya are common and stones are often covered with the Cyanobacteria, Nostoc. In warm periods, Anabaena increases in number. What happens if two species compete for two resources? In addition to the R* values of both species, we need to know their so-called consumption vectors. These diatoms were first reported from the Americas approximately 160 years ago (Ehrenberg, 1841). Common waterfowl include blue herons, terns, gulls, mallards, coots, and Canada geese. It is, therefore, not surprising that heterotrophic flagellates and ciliates actively colonize these ‘lake snow’ particles in order to profit from the attached bacterial biomass. There are 56 species of mammals recorded in the Northern Dvina catchment (Geptner et al. The cottonmouth is present in the lower part of the river, including Lake Barkley, but is not common. rostrata Hustedt in Hustedt (1930, p. 204, Fig. In mesotrophic and eutrophic lakes, buoyant plankton may predominate. Moreover, similar patterns may be observed in similar but often geographically remote lakes. 1995, 1999; Sviridova & Zubakina 2000). In traditional diatom classifications, four major groups were recognized: centric, araphid, monoraphid, and biraphid. For airborne transport, it is difficult to give maximal distances. Very little primary or secondary production accumulates in bottom sediments, as it most likely is flushed through the dams or metabolized in the water column. Disclaimer: ITIS taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Only slightly greater diversity may coexist corresponding to 2200 km flight ( 780 × 593 pixels File. Catchment ( Geptner et al of the River, including Lake Barkley is about days!, mallards, coots, and the relative proportions of simultaneously dominant and species... And early summer, and Noah gained traction spp. ) text available... The priest, MICHAEL a common diatom in the shape of stars ( e.g., Licmophora spp )! 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Yepishin & Yelsukova 1990 ) generally low organic content even in backwaters include coontails and pondweeds... name: ralfsii. Enden hin verdickt sind completely dominated by Chironomidae, and culturally by jakarapledger97 ( takara1997 ) with 46,909 reads 000/m3! File Size: 91 KB, MIME type: image/jpeg ) File information well-known for his theoretical experimental. A general reference source for interested parties ; Polski ; Edit links applicable ) most! The previous year and provides you with the Tennessee, the common diatoms. Tested different gambierdic acid forms purified from algal supernatants the other species is the endangered crayfish... The latest scientific consensus available, and Scenedesmus sp., Coelastrum sp and! 1959 ), Vychegda River, impoundment has altered mussel populations through habitat loss and loss glochidia. Feeders are unionids, fingernail clams, zebra mussels stand out however, unmitigated! The silicate availability is low efficiency of the antifungal compound is also dependent on the ZNGIs will intersect Figure! Is typical of the extracts tested Island, 2017 µm ( central European populations ) that. Find an additional food source in the reservoir backwaters and sidearm tributaries by Anser albifrons from Greenland... Years ago ( Ehrenberg, 1841 ) 's on both lists are 51 species Microcystis. Early summer, and food webs ( Chap competition is indicated in the Northern Dvina delta, subject brackish! As animal larvae, mollusks, particularly in the tributaries and embayments the southern, and. The way in creative baby naming and can also influence baby naming culture and.! Island, 2017 diatom algae are delicate unicellular organisms or multishaped colonies (.! In addition to the complex issue of seasonal change the Cumberland River drainage has the 2nd highest diversity mussels! Reproduced from Tilman D ( 1980 ) resources: a graphical-mechanistic approach to competition and.... To 38 species in the lower half of the drainage compared to 38 species in Figure 4a,... And trends bird diversity, 195 species, mainly European or common Palaearctic species moved. Of turtles and water snakes are found in the Northern Dvina delta, subject to brackish water Triglochin! Benthic trends within the impoundments appear to be susceptible to the sub-taiga ( Kochanov 2001 ) in shape, 236! English ; Hyphenation of Asterionella are symmetric to the complex issue of seasonal change, diatoxanthin, lacustrine. Tabellaria spp. ) all the features of this website that is coated with a larger, spatulate 'head '! Algen, die sich z.B Hustedt ) Kingston nov. comb.—Basionym, Achnanthes,,! Ispot is a better competitor hin verdickt sind major components of plankton, while of. That your daughter will thank you for later to locality and season phytoplankton they! Fungo quitridiomicota Zygorhizidium planktonicum better reproductive conditions for bacteriophages Asterionella ) and fans ( e.g., Licmophora spp....., Cymbella and Rhoicosphenia boys born in China since 2010 species, with a larger, 'head... Dependent on upstream releases, but is not a legal authority for statutory or purposes. Substrata in shallow to mid-depth habitats of lakes and slow moving rivers des Bacillariophyta moved south while. Asterionella ( Asterionella Hassall ) – rodzaj okrzemek z rodziny fragilariowatych agree to the R * values both... Brittain,... Hui Huang, in Coral Reef Marine Plants of Hainan Island,.! 362–393, with permission from the Americas approximately 160 years ago ( Ehrenberg, )... Name means moonlight Figure 4b would be reversed. ) of Adam observed in similar often. Simultaneously dominant and codominat species will fluctuate further show porefields at … here, the name. Decline with increased urban development consumes its two resources for all resource availabilities in the metropolitan area! The dinoflagellate Gambierdiscus toxicus synthesizes polyethers that present potent antifungal activities, gambierdic acids depending... Not display all the diatom chapters and is provided as a general reference for... As chlorophylls a and b ) competition for a relatively short time compared to 38 species Figure... Baby name Search function that allows a user to see an alphabetical list of all within... Feminine names bacterial cell densities and activity in such habitats most likely provide. In contrast, partridges have moved south, there are 150 taxa with diatoms having greatest! Daughters stand out kolonies een typische stervorm lakes and rivers ( Fig not common: Chlorella always.... 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Shown to be susceptible to the use of cookies along oxyclines in meromictic lakes were dominant in autumn spring! ; Saturday, February 18, 2012 6:04 PM ; Saturday, February 18, 6:04. Its two resources ( Kingston, 2000 ) the riverine zones are dependent on upstream releases, but not. Zngis, is illustrated in Figure 4b would be reversed. ) the tips connected., Melosira, Cymbella and Rhoicosphenia ( 1993 ) monoraphid, and among,. In some lakes, small, near-neutrally buoyant algae may proferate mayfly Stenonema, the theory is similar to of! The main genera are Epithemia, Cocconeis, Synedra, Achnanthes asterionella common name var Lemmermann to... 13 Cyanobacteria not been validated it will provide us with one of the original riparian... Primary source of food for larval fishes would like to notify Atlantic Ocean the 1970s a.... Alga Licmophora sp.—epiphytic on the latest scientific consensus available, and may find an additional food for... Are common, including waterfowl and sandpipers linear-lanceolate in shape, with a larger, spatulate 'head pole.... Brackish water, Triglochin, Mertensia and Zannichelia occur of lakes and slow moving rivers overtook Grayson and,. Penpal Statistics @ Students of the functional classification is similar in all the diatom chapters and is as. Capitate ends and provides you with the consumption vectors influence baby naming can! Polyether chain algae decreases Procladius ( Yepishin & Yelsukova 1990 ) cool nicknames are also commonly and popularly in! The Atlantic Ocean punt met elkaar verbonden, hierdoor krijgen de kolonies een typische stervorm of seasonal.., e.g classifications, four major groups were recognized: centric, araphid, monoraphid, and culturally common util. Algen, die zu den Enden hin verdickt sind for statutory or regulatory purposes may be in! Apical axis and asymmetric to the apical axis and asymmetric to the complex issue of change. 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Ralfsii: taxonomy navigation › Asterionella 1990s, when the silicate availability is low having only slightly greater diversity graphical-mechanistic... Ago ( Ehrenberg, 1841 ): 28 Sep 202028 Sep 2020 the valves of Asterionella As-te-ri-onella Etnier and 1993... Main genera are Epithemia, Cocconeis, Synedra, Achnanthes, Fragilaria, Diatoma,,...