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227 results for “lake morphology”
FIGURES 206–213 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 206–213. Diploneis lunata sp. nov., SEM external (Figs 206–209) and internal (Figs 210–213) valve views, Lake Tanganyika, Kiganza Bay. 206. View of a whole valve. 207. Central area with teardrop shaped proximal raphe ends. 208. Distal raphe ends with deflected terminal fissures. 209. Broken valve, showing the chambered wall structure. 210. View of a whole valve. 211. Central area with simple and slightly elevated proximal raphe ends. 212. Distal raphe endings slightly elevated and distant from the valve apices. 213. Detail alveoli openings covered by thin silica layers. Scale bars = 5 μm (Figs 206, 210), 2 μm (Figs 209, 211), 1 μm (Figs 207, 208, 212, 213).
FIGURES 186–192 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 186–192. Diploneis fossa sp. nov., SEM external valve views, Lake Tanganyika. 186, 187, 191, 192. Specimens from Mutondwe Island. 188–190. Specimen from Kiganza Bay. 186–188. View of a whole valve. 189. Detail valve apices, showing distal raphe ends with deflected terminal fissures and large round to rectangular areolae opened in deep pits. 190. Central area with teardrop depression with proximal raphe ends. 191. Close view of the areolae separated from each other with inter-areolar thickenings bearing fin-like silica ridges. 192. Distal raphe ends with deflected terminal fissures. Scale bars = 10 μm (Figs 186–188), 5 μm (Fig. 192), 2 μm (Figs 189, 191), 1 μm (Fig. 190).
FIGURES 193–205 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 193–205. Diploneis lunata sp. nov., LM valve views, Lake Tanganyika. 193. Specimen from Kalya Bay. 194, 196. Specimens from Mahale National Park. 195, 197, 199–205. Specimens from Kiganza Bay. 198. Specimen from Jakobsen Beach. Fig. 197. Holotype specimen. Scale bar = 10 μm.
FIGURES 152–171 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 152–171. Diploneis tenera sp. nov., LM valve views, Lake Tanganyika. 152, 154. Specimens from Isanga Bay. 153, 171. Specimens from Mahale National Park. 155–165, 167–169. Specimens from Kalambo Falls Lodge. 166, 170. Specimens from Kasaba Bay. Fig. 157. Holotype specimen. Scale bar = 10 μm.
FIGURES 344–348 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 344–348. Diploneis angusta sp. nov., SEM external (Figs 344, 345, 347, 348) and internal (Fig. 346) valve views, Lake Tanganyika. 344, 345, 347, 348. Specimens from Isanga Bay. 346. Specimen from Kalambo Falls Lodge. 344, 345. View of a whole valve. 346. Valve view, showing simple and slightly elevated proximal and distal raphe ends, alveolate openings, and valvocopula with serrated advalvar edges. 347. Close view of uniseriate striae (white arrow) and inter-areolar thickenings with fin-like shaped ornamentations. 348. Central area with extended linear teardrop shaped depression with proximal raphe ends. Scale bars = 10 μm (Fig. 346), 5 μm (Figs 344, 345), 2 μm (Figs 347, 348).
FIGURE 619. Scatter plot showing morphological differences between Diploneis species using 33 landmarks defining 21 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURE 619. Scatter plot showing morphological differences between Diploneis species using 33 landmarks defining 21 valve features corresponding to the points in Figure S1 and measured on about 30 valves of each species. Biplot of the first two principal components of the landmark analyses (75 % of variance explained) of all specimens analyzed, keyed by species in the legend.
FIGURES 577–581 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 577–581. Diploneis latissima sp. nov., SEM external (Figs 577–579) and internal (Figs 580, 581) valve views, Mulungushi River. 577. View of a whole frustule; white arrowed irregularly spaced and shaped round ornamentations along the raphe branch. 578. Detail view of the biseriate striae. 579. Close view of cribrate areolae becoming larger towards the valve mantle. 580. Valve view and valvocopula with serrated advalvar edges. 581. Close view of alveoli openings; note the striae pattern visible through the thin layers of silica occluding the alveoli. Scale bars = 5 μm (Figs 577, 580), 2 μm (Figs 579, 581), 1 μm (Fig. 578).
FIGURES 475–505 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 475–505. Diploneis serrulata sp. nov., LM valve views, Lake Tanganyika. 475, 479, 480, 485, 488, 490, 491–495, 498, 499, 501. Specimens from Kalambo Falls Lodge. 476–478, 481, 482. Specimens from Mutondwe Island. 483, 484, 486. Specimens from Mahale National Park. 487, 489, 497, 504. Specimens from Kasaba Bay. 496. Specimen from Jakobsen Beach. 500, 502, 503. Specimens from Isanga Bay. 505. Specimen from Chituta Bay. Fig. 478. Holotype specimen. Scale bar = 10 μm.
FIGURES 518–543 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 518–543. Diploneis dissipata sp. nov., LM valve views. 518–520. Lake Tanganyika, Rukoma area. 521–543. Specimens from the type material, Mulungushi River. Fig. 526. Holotype specimen. Scale bar = 10 μm.
FIGURES 462–474 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 462–474. Diploneis decora sp. nov., LM (Figs 462–471) and SEM external (Figs 472–474) valve views, Lake Tanganyika. 462, 463, 467. Specimens from Cape Nangu at Kasaba Bay. 464–466, 468–474. Specimens from Mahale National Park. Fig. 466. Holotype specimen. 472. View of a whole valve. 473. Half valve, showing canal areolae arranged in oblong circles (white arrow). 474. Distal raphe end with deflected terminal fissure. Scale bars = 10 μm (Figs 462–472), 5 μm (Fig. 473), 3 μm (Fig. 474).
FIGURES 614–618 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 614–618. Diploneis limosa sp. nov., SEM internal valve views, Lake Mweru Wantipa. 614. View of a whole valve. 615. Close view of the alveoli occluded by thin silica layers. 616. Half-valve, showing the slightly elevated proximal and distal raphe ends. 617. Central area with proximal raphe ends. 618. Close view of the simple and slightly elevated proximal raphe ends. Scale bars = 5 μm (Fig. 614), 2 μm (Figs 616, 617), 1 μm (Figs 615, 618).
FIGURES 512–517 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 512–517. Diploneis serrulata sp. nov., SEM internal valve views, Lake Tanganyika. 512, 515–517. Specimen from Mutondwe Island. 513, 514. Specimen from Kiganza Bay. 512, 513. View of a whole valve. 514. Mid-valve, showing alveoli structure and simple proximal raphe ends. 515. Distal raphe endings slightly elevated and distant from the valve apices. 516. Detail opening of the alveoli covered by thin silica layers. 517. Close view of the central area and the proximal raphe ends. Scale bars = 5 μm (Figs 512, 513), 2 μm (Figs 514–517).
FIGURES 544–548 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 544–548. Diploneis dissipata sp. nov., SEM external (Figs 544–545) and internal (Figs 546–548) valve views, Mulungushi River. 544. View of a whole frustule, showing canal structure and striae ornamentation. 545. Close view of biseriate striae with interareolar fin-like silica ridges. 546. View of a broken valve, showing the internal structure of the valve; note the simple and slightly elevated proximal and distal raphe ends. 547. Close view of internal and external striae structure. 548. Detail view of the simple and slightly elevated proximal raphe end. Scale bars = 10 μm (Fig. 546), 5 μm (Fig. 544), 2 μm (Figs 545, 547, 548).
FIGURES 439–441 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 439–441. Diploneis cocquytiana sp. nov., SEM internal valve views, Lake Tanganyika, Mutondwe Island. 439. A whole valve. 440. Detail valve apices, showing simple and slightly elevated distal raphe ends and openings of the alveoli covered by thin silica layer. 441. Central area with simple and slightly elevated proximal raphe ends. Scale bars = 10 μm (Fig. 439), 5 μm (Figs 440, 441).
FIGURES 254–257 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 254–257. Diploneis disjuncta sp. nov., SEM internal valve views, Lake Tanganyika. 254, 256, 257. Specimen from Kalambo Falls Lodge. 255. Specimen from Mutondwe Island. 254, 255. View of a whole valve, showing raphe structure, alveoli structure, and valvocopula with serrated advalvar edge. 256. Detail mid-valve, showing simple and slightly elevated proximal raphe ends and alveoli occluded by thin silica layers. 257. Half-valve, showing raphe branch and uniseriate becoming biseriate striae. Scale bars = 10 μm (Fig. 254), 5 μm (Figs 255, 257), 2 μm (Fig. 256).
FIGURES 178–185 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 178–185. Diploneis fossa sp. nov., LM valve views, Lake Tanganyika. 178, 179, 181, 182. Specimens from Mutondwe Island. 180, 183–185. Specimens from Isanga Bay. Fig. 184. Holotype specimen. Scale bar = 10 μm.
FIGURES 567–576 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 567–576. Diploneis latissima sp. nov., LM valve views. All individuals displayed from the type material, Mulungushi River. Fig. 575. Holotype specimen. Scale bar = 10 μm.
FIGURES 582–608 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 582–608. Diploneis limosa sp. nov., LM valve views. All individuals displayed from the type material, Lake Mweru Wantipa. Fig. 583. Holotype specimen. Scale bar = 10 μm.
FIGURES 609–613 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 609–613. Diploneis limosa sp. nov., SEM external valve views, Lake Mweru Wantipa. 609, 611. View of a whole frustule. 610. Detail mid-valve, showing teardrop shaped depression with proximal raphe ends bent to the same side of the valve. 612. Close view of uniseriate becoming biseriate striae pattern. 613. Detail valve apices, showing the distal raphe ends with deflected terminal fissures. Scale bars = 5 μm (Figs 609, 611), 2 μm (Figs 610, 612, 613).
FIGURES 172–177 in Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas
FIGURES 172–177. Diploneis tenera sp. nov., SEM external (Figs 172, 173) and internal (Figs 174–177) valve views, Lake Tanganyika. 172, 173. Specimen from Isanga Bay. 174–177. Specimen from Kalambo Falls Lodge. 172. A whole valve, showing raphe structure and inter-areolar thickenings with serrated fin-like silica ridges. 173. Close view of areolae structure and distal raphe ends with deflected terminal fissures. 174. View of a corroded valve, showing raphe structure, alveoli structure, and valvocopula with serrated advalvar edges. 175. Detail mid-valve, showing simple and slightly elevated proximal raphe ends. 176. Alveoli with corroded thin silica layers showing uniseriate becoming biseriate striae; valvocopula with serrated edge. 177. Distal raphe ends simple and slightly elevated. Scale bars = 10 μm (Fig. 172), 5 μm (Fig. 174), 2 μm (Figs 173, 175), 1 μm (Figs 176, 177).
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International Brain Laboratory public data
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OpenNeuro
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