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Green algae, cyanobacteria and diatom concentrations from the GCE-LTER Seawater Addition Long-Term Experiment (SALTEx) Project
SALTEx (Seawater Addition Long-Term Experiment) is a field experiment designed to simulate saltwater intrusion in a tidal freshwater wetland to predict how chronic (Press) and acute (Pulse) salinization will affect this and other tidal freshwater ecosystems. The SALTEx experiment was initiated in 2012 and consists of 31 field plots , each 2.5 m on a side. There are three treatments (Press, Pulse, and Fresh) and two types of controls (with and without sides), each consisting of six replicates. The Press treatment plots receive regular (4 times each week) additions of a mixture of seawater and fresh river water. Pulse plots receive the same mixture of seawater and river water during September and October, which is historically a time of low flow in the river when natural saltwater intrusion occurs. The Fresh treatment plots receive regular additions of fresh river water. Treatment water is added during low tide to facilitate its infiltration into the soil, and all plots are inundated by astronomical tides at high tide. We are measuring the abundance of benthic algae with a BenthoTorch as one of the response variables for the SALTEx project.
Latent infection of an active giant endogenous virus in a unicellular green alga
<p>Additional data for Latent infection of an active giant endogenous virus in a unicellular green alga.</p>
Fig. 15 in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 15. Interpretation of voids and pores in fertile specimens of dasycladalean alga Chinianella ellenbergeri (Lebouché and Lemoine in Granier and Deloffre, 1994) Granier, Masse, and Berthou, 1994, emend. nov.; colours as in Fig. 5. A. Axial view (general axial section). B. Tangential oblique section, based on specimen in Fig. 7D, LM-DiSTAR/BA.577.19, n. 095. C. Oblique section showing structures interpreted as reproductive organs, not all whorls display gametophores (see arrow); based on the specimen in Fig. 14, LM-DiSTAR/BA.577.b, n. 045. D. Tangential oblique section, based on specimen in Fig. 7E, LM-DiSTAR/BA.577.14, n. 040.
Fig. 14 in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 14. Dasycladalean alga Chinianella ellenbergeri (Lebouché and Lemoine in Granier and Deloffre, 1994) Granier, Masse, and Berthou, 1994, emend. nov., upper Sinemurian (Lotharingian), Canders, 2.4 km E of Fontcaude (S France). LM-DiSTAR/BA.577.b, n. 045 (lost specimen), oblique section showing the presence of reproductive structures (see arrows).
Fig. 12 in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 12. Late Triassic species of dasycladalean alga Distefanopolia gen. nov. A. Distefanopolia micropora (Di Stefano, 1981 ex Di Stefano and Senowbari-Daryan, 1985) nov. comb. B. Distefanopolia zanklii (Ott, 1968) nov. comb. C. Distefanopolia carpatica (Bistricky, 1967) nov. comb. D. Distefanopolia crosii (Ott, 1968) nov. comb. Calcified skeleton (black) and soft parts (grey and green).
Fig. 13 in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 13. Interpretation of voids and pores in the sterile specimens of dasycladalean alga Chinianella ellenbergeri (Lebouché and Lemoine in Granier and Deloffre, 1994) Granier, Masse, and Berthou, 1994, emend. nov.; the meaning of the colors are the same as in Fig. 5. A. Axial view (general axial section). B. Proximal tangential section, first and second interverticillar spaces from the top are lacking pores, based on specimen in Fig. 9I, LM-DiSTAR /BA.577.37, n. 135, upper part. C. Oblique section, the proximal sleeve is missing interverticillar pores; based on specimen in Fig. 8E, LM-DiSTAR/BA.577.27, n. 124. D. Distal tangential section; note the interverticillar, irregular voids; based on specimen in Fig. 7K, LMDiSTAR/BA.577.34, n. 132, middle–upper part.
Fig. 10 in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 10. Dasycladalean alga Chinianella ellenbergeri (Lebouché and Lemoine in Granier and Deloffre, 1994) Granier, Masse and Berthou, 1994, emend. nov. A. Reconstruction of the alga in axial view; A1, calcified skeleton (black) and soft parts (grey) in axial section; A2, axial view of the soft parts (green); dotted line separates the sterile and fertile parts of the thallus. B. Reconstruction of the alga in transverse view. B1, sector of a whorl in transverse section showing the calcified skeleton (black) and reconstruction of the soft parts (grey); B2, upper view of whorl and sector of a whorl also showing gametophores (upper part); soft parts in green.
Fig. 4. A in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 4. A comparison of selected dasycladalean genera compared. A. Bornetella Munier-Chalmas, 1877. B. Chinianella Ott, 1967 ex Granier and Deloffre, 1994. C. Jodotella Morellet and Morellet, 1913. D. Granieria group, Conradella Masse and Bucur, 2002 (D1) and Granieria Barattolo and Romano in Barattolo et al., 2008 (D2). E. Montiella group, Bakalovaella Bucur, 1993 (E1), Montiella Morellet and Morellet, 1922 (E2), Barattoloporella Parente, 1997 (E3).
Fig. 5 in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 5. Scheme of mineralization in dasycladalean alga Chinianella ellenbergeri (Lebouché and Lemoine in Granier and Deloffre, 1994) Granier, Masse and Berthou, 1994, emend. nov. A. Axial section, lowest whorl is weakly calcified. Trace of transverse sections is indicated with dashed lines. B. Transverse section at whorl level. C. Transverse section through the interverticillar space. The interverticillar empty spaces merge laterally (annular channel) and are connected between whorls (vertical channels). A central pore sometimes leaves in contact the interverticillar void and the central cavity, either shifted downwards (white arrow) or upward (black arrow).
Fig. 2 in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 2. Structure of dasycladalean alga Chinianella ellenbergeri (Lebouché and Lemoine in Granier and Deloffre, 1994) according Lebouché and Lemoine (1963).
Fig. 6 in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 6. Dasycladalean alga Chinianella ellenbergeri (Lebouché and Lemoine in Granier and Deloffre, 1994) Granier, Masse and Berthou, 1994, emend. nov., upper Sinemurian (Lotharingian), Canders, 2.4 km E of Fontcaude, (S France). A. LM-DiSTAR/BA.577.16, n. 065, oblique section of a weakly mineralized specimen showing intusannulation. B. LM-DiSTAR/BA.577.21, n. 114, axial section, notice the irregular inner contour. C. LM-DiSTAR/ BA.577.24, n. 117, axial section of a weakly mineralized specimen showing intusannulation. D. LM-DiSTAR/BA.577.28, n. 126, oblique section of a weakly mineralized specimen with intusannulation. E. LM-DiSTAR/BA.577.4, n. 003, oblique section of a strongly mineralized specimen, note the regular contour of the inner cavity, interverticillar cavities sometimes communicate with the central cavity by mean of a small pore (see arrow). F. LMDiSTAR/BA.577.9, n. 018, oblique section showing the annular and vertical channels. G. LM-DiSTAR/BA.577.10, n. 024, transverse-oblique section, a possible gametophore looks attached to primary lateral (see arrow). H. LM-DiSTAR/BA.577.8, n. 014, transverse-oblique section showing the annular and vertical channels. I. LM-DiSTAR/BA.577.15, n. 054, transverse-oblique section, note the annular channel with scalloped surfaces in the proximal sleeve and the calcareous shield, respectively.
Fig. 3 in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 3. Possible structural models in dasycladalean alga Chinianella ellenbergeri (Lebouché and Lemoine in Granier and Deloffre, 1994). A. Alternated whorls of weak/sterile and strong/fertile laterals; sterile and fertile laterals ramified (A1); only sterile laterals ramified (A2). B. Spaced whorls of weak/sterile laterals bearing a laterally attached gametophore (goniospory); large gametophore attached proximally (B1); subterminal gametophore (B2). C. Spaced whorls of weak/sterile laterals with simple interverticillar voids.
Fig. 1 in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 1. Map with type localities of the species discussed in the text indicated. A. Chinianella ellembergeri (Lebouché and Lemoine in Granier and Deloffre, 1994) Granier, Masse and Berthou, 1994, emend. nov., upper Sinemurian (Jurassic) of Canders (Languedoc, France). B. Distefanopolia micropora (Di Stefano and Senowbari-Daryan, 1985) and Distefanopolia macropora (Di Stefano, 1981 ex Di Stefano and Senowbari-Daryan, 1985) nov. comb., Norian (Upper Triassic), Cozzo di Lupo (Sicily, Italy). C. Distefanopolia zanklii (Ott, 1967) nov. comb., Norian–Rhaetian (Upper Triassic) of Dürreckberg (Upper Bavaria, Germany). D. Distefanopolia crosii (Ott, 1968) nov. comb., Upper Triassic of Kohlalpen Valley (Kaiser Mountains, Austria). E. Distefanopolia carpatica (Bystrický, 1967) nov. comb., Norian Upper Triassic) of Muráň Plateau (Slovakia).
Fig. 11 in Evidence of external gametophores in puzzling Late Triassic-Early Jurassic dasycladalean green algae
Fig. 11. The structure of the Late Triassic species of dasycladalean algae Distefanopolia gen. nov. A. Distefanopolia micropora (Di Stefano, 1981 ex Di Stefano and Senowbari-Daryan, 1985) nov. comb., MGG-PA/Si24ax, Norian, Cozzo di Lupo (Palermo, Sicily), oblique section; note the first fertile whorl (bottom) showing two tufts of about eight pores, the third pore aside displays the usual inflated shape. B. Distefanopolia carpatica Bystrický, 1967) nov. comb., Norian, Muráň-PIateau (Gemer, Slovakia), oblique section, holotype, corresponding to Bistricky (1967: pl. 15: 3, thin section Nr. 2237), note the large, rounded gametophore encircled by several secondary laterals (below). Scale bars 1 mm.
Figure 2 in Polychaete assemblages associated with the invasive green alga Avrainvillea amadelpha and surrounding bare sediment patches in Hawaii
Figure 2. nMDS ordinations of polychaete assemblages: A, using data of all taxa; B, bubbles indicating abundance in number of individuals; C, bubbles indicating values of Shannon–Wiener diversity; D, bubbles indicating values of Pielou's Evenness.
Figure 1 in Polychaete assemblages associated with the invasive green alga Avrainvillea amadelpha and surrounding bare sediment patches in Hawaii
Figure 1. Map of the study area showing the algae ('A' stations; circles) and sediment stations ('S' stations; squares).
FIGURE 1 in Putative Ordovician green alga Krejciella reinterpreted as enteropneust hemichordate tube (Czech Republic)
FIGURE 1. Location map of the study area, showing the location of each of the studied localities within the Ordovician of the Prague Basin. A. Map of the Czech Republic and the Bohemian Massif showing the distribution of Ordovician rocks in the Prague Basin. B. Ordovician of the Prague Basin with the location of five outcrops that yielded the studied specimens.
FIGURE 2 in Putative Ordovician green alga Krejciella reinterpreted as enteropneust hemichordate tube (Czech Republic)
FIGURE 2. Type material of Krejciella putzkeri Obrhel 1968. Three-dimensionally preserved fragments of tubeshaped fossils. All specimens are in lateral view and are housed in the National Museum Prague. A. Holotype, NML D497a. B. Counterpart of the holotype, NML 497b. C. Paratype, NML 498.
FIGURE 5 in Putative Ordovician green alga Krejciella reinterpreted as enteropneust hemichordate tube (Czech Republic)
FIGURE 5. Distribution of tubiculous fossils classified as Margaretia in the middle Cambrian and specimens of Krejciella in the Middle Ordovician. A. Stratigraphic ranges of tubiculous fossils in Cambrian and Ordovician. B. Palaeogeographical reconstruction of the middle Cambrian. C. Palaeogeographical reconstruction of the Middle Ordovician. Palaeogeography modified after Cocks and Torsvik (2002, 2011), Fatka and Mergl (2009) and Torsvik and Cocks (2013). B - Burgess Lagerstäte. D - Dobrotivá Lagerstäte. G - Guanshan Lagerstäte. K - Kinzers Lagerstäte. L - Latham Lagerstäte. M - Marjum Lagerstäte. RS - Rockslide Formation Lagerstäte. S - Sinsk Lagerstäte. R - Rennie Lagerstäte. W - Wheeler Lagerstäte.
FIGURE 4 in Putative Ordovician green alga Krejciella reinterpreted as enteropneust hemichordate tube (Czech Republic)
FIGURE 4. Sketch showing the distribution of major biofacies associated with the late Darriwilian-early Sandbian Dobrotivá Formation. The shallowest part of the basin was inhabited by a sparse orthid brachiopod association. In the offshore direction it was replaced by the Placoparia Association, which is characterized by a rich skeletal fauna with trilobites and brachiopods. In the offshore slope settings, it grades into a low-diversity atheloptic trilobite association that also includes 'gardens' of benthic dendroids. The water column was inhabited by planktonic graptolites and taxa of the poorly diverse Cyclopygid Biofacies, particularly by Degamella princeps. Poorly oxygenated black shales in the central part of the basin were dominated by the Paterula Association, at some sites associated with the trilobite Zeliszkella oriens. Modified after Fatka and Mergl (2009, figure 11d) and Peršín and Budil (2009).
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Allen Brain Atlas
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OpenNeuro
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