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1,215 results for “Red sea”
Geological map of the southern Red Sea & western Gulf of Aden region
<p><strong>Content</strong></p> <p>This dataset contains a geological map of the southern Red Sea & western Gulf of Aden region (1:3’100’000), including all the associated data.</p> <p>This dataset includes:</p> <ul> <li>The map in JPEG, PDF, and GeoTIFF format</li> <li>The shapefiles of the map</li> <li>One document listing all sources used for the compilation of this map (<em>Source_Material_GmsRSwGoAr.pdf</em>)</li> </ul> <p> </p> <p>This database is an additional complement to the paper ‘Rime, V., Foubert, A., Ruch, J. & Kidane, T. (2023), Tectonostratigraphic evolution and significance of the Afar Depression, <em>Earth-Science Reviews</em>, 244, 104519, <a href="https://doi.org/10.1016/j.earscirev.2023.104519">https://doi.org/10.1016/j.earscirev.2023.104519</a> ’<em>.</em></p> <p>Note that a larger-scale map of the Afar Depression is available as 'Rime, V., Foubert, A., Atnafu, B. and Kidane, T. (2022) Geological map of the Afar Depression. <em>Zenodo</em>. <a href="https://doi.org/10.5281/zenodo.7351643">https://doi.org/10.5281/zenodo.7351643</a> '</p> <p> </p> <p><strong>References</strong></p> <p>The map was developed by compiling a large number of published maps, descriptions, datings and other studies, complemented by remote sensing. All sources and references are mentioned in the <em>Source_Material_GmsRSwGoAr</em>. Material and methods of mapping have been described in detail within the paper.</p> <p> </p> <p><strong>Citation</strong></p> <p>When using the data, please cite the data as ‘Rime, V., Foubert, A., Atnafu, B. & Kidane, T. (2022) Geological map of the southern Red Sea & western Gulf of Aden region. Zenodo’ and refer to the accompanying paper as ‘Rime, V., Foubert, A., Ruch, J. & Kidane, T. (2023), Tectonostratigraphic evolution and significance of the Afar Depression, <em>Earth-Science Reviews</em>, 244, 104519, <a href="https://doi.org/10.1016/j.earscirev.2023.104519">https://doi.org/10.1016/j.earscirev.2023.104519</a> ’<em>.</em></p> <p>The map and additional data are given without any guarantee of correctness. Any use of these are under the user’s full responsibility.The authors decline any responsibility.</p> <p> </p> <p><strong>Acknowledgements</strong></p> <p>This study was funded by the Swiss National Science Foundation (SNF project SERENA – SEdimentary REcord of the Northern Afar 200021_163114). We are grateful to the University of Fribourg (Switzerland), the University of Addis Ababa (Ethiopia), the Ethiopian Ministry of Mines and Energy, the Ethiopian Geological Survey, Circum Minerals, former Allana Potash and Yara Dallol for their support. We particularly acknowledge Samuel Getachew that helped us to access some of the geological maps. We thank David Jaramillo-Vogel, Jean-Charles Schaegis, Haileyesus Negga, Addis Endeshaw, Ermias Gebru, Eva de Boever, Juan-Carlos Braga, Pia Wyler, Xenia Haberditz, the Ethioder team as well as the regional and local administration of the Afar for their help and support during fieldwork.</p>
Temperature logger deployment methods and irradiance-biased temperature data, King Abdullah University of Science and Technology, Red Sea, 2023.
Solar irradiance can offset the temperature recorded by underwater sensing instruments (aka "loggers"). We collected temperature and PAR (photosynthetic active radiation) data during two short-term in situ deployments on a shallow fringing reef adjacent to the King Abdullah University of Science and Technology (KAUST) in the Red Sea. The first deployment quantified the measurement bias due to solar heating over five days in February 2023 while the second compared the effect of different shading methods on logger performance over 24 hours in June 2023. We also recorded temperature in a controlled calibration bath in the lab with ten of the most widely used loggers to further assess their accuracy, response time, and intra-logger variation. Finally, to understand current practices of measuring temperature on coral reefs, we summarized logger deployment method details from a literature review of coral reef studies published from 2013 to 2022. Such details included how often loggers recorded the temperature, the depth where loggers were deployed, and whether the authors reported shading or protecting their loggers. This data package is complete and part of a larger project that aims to develop an instrument deployment framework for restoration-based reef monitoring, which includes instrument recommendations and deployment guidelines.
Genomes and full-length 16S reference sequences for 27 Alpha- and Gamma-Proteobacterial isolates from Red Sea Acropora corals
<p>Coral-associated bacteria contribute to the biology of their host, but the underlying molecular interactions are largely unknown. To further our functional understanding, we obtained 27 alpha- and gamma-proteobacterial isolates, many of which are Rhodobacteraceae, from three coral species of the genus <em>Acropora </em>and assembled/annotated their genomes as a resource for further functional studies. Our results reveal the immense taxonomic and genetic diversity of common alpha- and gamma-proteobacterial coral-associated bacteria. We hope these data provide a framework to study the function of specific bacteria in the coral holobiont. Isolates are available upon request.</p>
Diel vertical migration promotes prokaryotic diversity in the Red Sea mesopelagic
<p>ABSTRACT: The diel vertical migration (DVM) of fish provides an active transport of labile dissolved organic matter (DOM) to the deep ocean, fueling the metabolism of heterotrophic bacteria and archaea. We studied the impact of DVM on the mesopelagic prokaryotic diversity of the Red Sea focusing on the mesopelagic deep scattering layer (DSL) between 450-600 m. Despite the general consensus of homogeneous conditions in the twilight zone, we observed variability in physico-chemical variables and distinct seasonal indicator prokaryotes inhabiting the DSL, representing between 2% (summer) to over 10% (winter) of total sequences. The DSL samples diverged from the surrounding mesopelagic waters in multidimensional scaling analysis and were distributed according to depth (47% of variance explained). We identified the sources of diversity that contribute to the DSL using spring depth profiles. On average, 7% was related to probable sinking from the epipelagic, 34% was common among the other mesopelagic waters and 38% was attributable to the DVM, with 21% of species being unique to the DSL. We conclude that the mesopelagic physico-chemical properties shape a rather uniform prokaryotic community, but that the 200 m wide DSL contributes uniquely and in a high proportion to the diversity of the Red Sea mesopelagic.</p> <p>The raw 16S sequences used in this research article are available at <a href="https://www.ebi.ac.uk/ena/browser/view/PRJEB49545">https://www.ebi.ac.uk/ena/browser/view/PRJEB49545</a> as 67 paired fastq sequences with consecutive accession numbers: ERX7411972 – ERX7412038.</p> <p>The 2 files stored in this repository represent: a) the clean 16S sequences count and taxonomic affiliation (SILVA132 Database) and b) the metadata associated to each of the 67 samples (lat, long, temperature, salinity, nutrient concentrations, bacterial abundance, bacterial size, etc)</p>
Water Body Checklists 2019: Red Sea Species List
Species checklists created using effechecka and modified polygons from IHO. The polygons were reduced in resolution.<p></p>List of species collected from the Red Sea using effechecka and a modified polygon from the International Hydrographic Association. A filter was applied (based on data from WoRMS) to remove all non-marine taxa.
Water Body Checklists: Red Sea Species List
Species checklists created using effechecka and modified polygons from IHO. The polygons were reduced in resolution.<p></p>List of species collected from the Red Sea using effechecka and a modified polygon from the International Hydrographic Association. A filter was applied (based on data from WoRMS) to remove all non-marine taxa.
Data from: Habitat suitability models reveal extensive distribution of deep warm water coral frameworks in the Red Sea
<p>Deep-sea coral frameworks are understudied in the Red Sea, where conditions in the deep are conspicuously warm and saline compared to other basins. Habitat suitability models can be used to predict the distribution pattern of species or assemblages where direct observation is difficult. Here we show how coral frameworks, built by species within the families Caryophylliidae and Dendrophylliidae, are distributed between water depths of 150 m and 700 m in the northern Red Sea and Gulf of Aqaba. To extrapolate the known (ground-truthed) positions of these deep frameworks, we use environmental and geomorphometric variables to inform well-performing maximum entropy models. Over 250 km2 of seafloor in our study area are identified as suitable for such frameworks, equivalent to at least 35% of the area of photic-zone coral reefs in the same region. We hence contend that deep-water coral frameworks are an important and underappreciated repository of Red Sea biodiversity.</p>
Figure 2 in Zoeal stages of Hiplyra variegata (Rüppell, 1830) (Crustacea: Brachyura: Leucosiidae) reared in the laboratory and collected from plankton at Al-Kharrar creek, central Red Sea
Figure 2. Hiplyra variegata (Rüppell, 1830), maxillule: (a) zoea I; (c) zoea II; (e) zoea III. Maxilla: (b) zoea I; (d) zoea II; (f) zoea III.
FIG. 1. — Areas VI-V-VI in Redescription of two overlooked species of the Perinereis nuntia complex and morphological delimitation of P. nuntia (Savigny in Lamarck, 1818) from the Red Sea (Annelida, Nereididae)
FIG. 1. — Areas VI-V-VI patterns of the pharynx shaped by the ridges and furrows: A-C, Perinereis latipalpa (Schmarda, 1861) n. comb. with a λ-shaped pattern; D-F, Perinereis nuntia (Savigny in Lamarck, 1818) with a χ-shaped pattern; G-I, Perinereis larentukana (Grube in Peters, 1881) n. comb. with a υ-shaped pattern; J-L, Perinereis shikueii Glasby & Hsieh, 2006 with a ɔc-shaped pattern; A, D, G, J, dorsal portion of oral ring; B, E, H, K, same with a slightly irregular line drawings on the shape formed by AVI-V-VI pattern; C, F, I, L, symmetrical line drawings of the AVI-V-VI patterns. Scale bars: 1 mm. J, K, after Glasby & Hsieh (2006).
FIG. 4 in Redescription of two overlooked species of the Perinereis nuntia complex and morphological delimitation of P. nuntia (Savigny in Lamarck, 1818) from the Red Sea (Annelida, Nereididae)
FIG. 4. — Perinereis latipalpa (Schmarda, 1861) n. comb. lectotype (NMHW 769a): A-F, parapodia, anterior view (numbers refer the chaetiger); A, B, with bent dorsal cirri; E, black arrowheads, points used for measuring entire length of distal lobe of dorsal ligule; white, same but for proximal lobe; F, with incomplete dorsal cirri; black arrowheads, central glandular patch; white, proximal patch; G, H, approach of notopodial homogomph spinigers (chaet. 39 and 60, respectively) (arrows point thick, separated teeth); I, Heterogomph spiniger (chaet. 60); inset: proximal teeth; J, neuropodial heterogomph falciger, supracicular (chaet. 60); K, same, subacicular (chaet. 60); black arrowheads, points used for measuring length of blade of the proximal end (a); white, same but for distal end (b); L, same, subacicular (chaet. 119), black arrowheads, points used for measuring length of the serrated region; white, same but for entire length of blade. Scale bars: A-F, 0.5 mm; G-L, 15 µm.
FIG. 8 in Redescription of two overlooked species of the Perinereis nuntia complex and morphological delimitation of P. nuntia (Savigny in Lamarck, 1818) from the Red Sea (Annelida, Nereididae)
FIG. 8. — Perinereis larentukana (Grube in Peters, 1881) n. comb., syntypes (ZMB 863): A-D, I-K, from best-preserved specimen; E-H, L, from complete specimen; A, anterior region, dorsal view; B, prostomium, dorsal view (arrow points nuchal organ); C, left jaw, dorsal (left) and ventral (right) views; D, same, zoom-in, ventral view (arrows point canals); E, maxillary ring of pharynx, frontal view; F, oral ring, frontal view; G, same, dorsal view (arrow points distal portion of λ-shaped pattern); H, same, ventral view; I, approach of notopodial homogomph spiniger (chaet. 10) (arrow points slender, evenly spaced teeth); J, neuropodial heterogomph falciger, supracicular (chaet. 10); M, same, subacicular (chaet.10); L, posterior region, dorsal view. Scale bars: A, 3 mm; B, H, L, 1 mm; C, E-G, 0.5 mm; D, 0.1 mm; I-L, 15 µm.
FIG. 9 in Redescription of two overlooked species of the Perinereis nuntia complex and morphological delimitation of P. nuntia (Savigny in Lamarck, 1818) from the Red Sea (Annelida, Nereididae)
FIG. 9. — Perinereis larentukana (Grube in Peters, 1881) n. comb. best-preserved syntype (ZMB 863): A-F, parapodia, anterior view (numbers refer the chaetiger); F, with bent ventral cirri. Scale bars: 0.5 mm.
FIG. 7 in Redescription of two overlooked species of the Perinereis nuntia complex and morphological delimitation of P. nuntia (Savigny in Lamarck, 1818) from the Red Sea (Annelida, Nereididae)
FIG. 7. — Perinereis latipalpa (Schmarda, 1861) n. comb.: A-E, topotype of Perinereis namibia Wilson & Glasby, 1993, n. syn. (ZMB 4109b): A, maxillary ring of pharynx, frontal view; B, oral ring of pharynx, dorsal view (arrow points distal portion of λ-shaped pattern); C, same, ventral view; D, parapodium 74, anterior view; E, approach to homogomph spinigers (chaet. 74), notopodial (left), neuropodial supracicular (right) (arrows point thickened, separated teeth). F-K, Perinereis vallata (Grube & Kröyer in Grube, 1858), non-type (ZMB 3666); F, approach to neuropodial supracicular homogomph spiniger (chaet. 76) (arrow points barely thickened, evenly spaced teeth); G, anterior region, dorsal view; H, maxillary ring, frontal view (arrows point merged paragnaths); I, oral ring, dorsal view (arrow points distal portion of χ-shaped pattern); J, pharynx, ventral view; K, same, lateral view. Scale bars: A, D, H, 0.5 mm; B, C, G, I-K, 1 mm; E, F, 15 µm.
FIG. 5 in Redescription of two overlooked species of the Perinereis nuntia complex and morphological delimitation of P. nuntia (Savigny in Lamarck, 1818) from the Red Sea (Annelida, Nereididae)
FIG. 5. — Perinereis latipalpa (Schmarda, 1861) n. comb., holotype of Neanthes latipalpa Kinberg, 1865 n. syn. (SMNH 37900): A, anterior region, dorsal view; B, pharynx, dorsal view (arrow points proximal overlap of areas V and VI); C, oral ring of pharynx, lateral view; D, same, ventral view; E, posterior region, ventral view; F-I, parapodia, anterior view (numbers refer the chaetiger); J, approach of notopodial homogomph spinigers (chaet. 45) (arrows point thicker, separated teeth); K, neuropodial heterogomph falciger, subacicular (chaet. 45); L, permanent microscope slide, mounted 27th parapodia (SMNH 37900, housed at the NHMUK). Scale bars: A, 2 mm; B-E, 1 mm; F-H, 0.5 mm; I, 0.3 mm; J, K, 15 µm.
FIG. 3 in Redescription of two overlooked species of the Perinereis nuntia complex and morphological delimitation of P. nuntia (Savigny in Lamarck, 1818) from the Red Sea (Annelida, Nereididae)
FIG. 3. — Perinereis latipalpa (Schmarda, 1861) n. comb: A, recent (above) and older (below) labels of the jars containing paralectotype materials at the Natural History Museum, Vienna (NMHW 771); B, C, lectotype (NMHW 769a); D-I, Paralectotype (NMHW 771); B, anterior region, dorsal view; C, posterior region, dorsal view; D, pharynx, anterior view (arrow points distal portion of λ-shaped pattern); E, same, ventral view; F, same, dorsal view; inset: entire λ-shaped pattern (arrow points proximal overlap of areas V and VI); G, same, lateral view (arrow points narrow gap); H, left jaw, dorsal (left) and ventral (right) views; I, same, zoom-in, ventral view (arrow: canals). Scale bars: B, C, 3 mm; D-G, 2 mm; H, 1 mm; I, 0.5 mm.
FIG. 2 in Redescription of two overlooked species of the Perinereis nuntia complex and morphological delimitation of P. nuntia (Savigny in Lamarck, 1818) from the Red Sea (Annelida, Nereididae)
FIG. 2. — Perinereis nuntia (Savigny in Lamarck, 1818), topotypes (ZMB 4019-Q): A, F, I-P, from complete specimen; B-E, G, from incomplete specimen; A, anterior region, dorsal view; inset: left nuchal organ; B, right jaw, ventral (left) and dorsal (right) views; C, same, close up of pulp cavity, ventral view (arrow points canal); D, maxillary ring of pharynx, ventral view; E, pharynx, lateral view; F, oral ring of pharynx, dorsal view; black arrowhead, distal portion of χ-shaped pattern; white arrowhead, proximal portion of χ-shaped pattern; black arrow, pointing anterior region; G, pharynx, ventral view; H-K, parapodia, anterior view (numbers refer the chaetiger); L, neuropodial homogomph spiniger, supracicular (chaet. 64); M, heterogomph spiniger, subacicular (chaet. 24); N, heterogomph falciger, supracicular (chaet. 24); O, same, subacicular (chaet. 119); P, posterior region, dorsal view. Scale bars: A, 3 mm; B, D-G, P, 1 mm; C, 0.2 mm; H-K, 0.5 mm; L-O, 15 µm.
FIG. 6 in Redescription of two overlooked species of the Perinereis nuntia complex and morphological delimitation of P. nuntia (Savigny in Lamarck, 1818) from the Red Sea (Annelida, Nereididae)
FIG. 6. — Perinereis latipalpa (Schmarda, 1861) n. comb., syntypes of Neanthes latipalpa typica Willey, 1904 n. syn. (NHMUK 1911.2.1.23-26); A, anterior region, dorsal view; B, same, ventral view; C, right jaw, ventral view (arrows point canals); D, maxillary ring of pharynx, ventral view; E, oral ring of pharynx, ventral view (arrow points distal portion of λ-shaped pattern); F, posterior region, dorsal view; G-J, parapodia, anterior view (numbers refer the chaetiger); K, approach of notopodial homogomph spiniger (chaet. 41) (arrow points thicker, separated teeth); L, neuropodial heterogomph falciger, supracicular (chaet. 41); M, same, subacicular (chaet. 41); N, permanent microscope slide with mounted 8th, 33rd and 73rd parapodia (NHMUK 1911.2.1.23-26a); O, same, 28th parapodia (NHMUK 1911.2.1.23-26b). Scale bars: A, B, F, 1 mm; C, 0.2 mm; D, E, G-J, 0.5 mm; K-M, 15 µm.
FIGURE 2 in Ankerius aenigmaticus, a new genus and new species of aphanodactylid crab symbiotic with polychaetes from the Red Sea coast of Saudi Arabia (Crustacea: Decapoda: Brachyura: Aphanodactylidae)
FIGURE 2. Ankerius aenigmaticus gen. et sp. nov., female holotype (7.2 × 7.0 mm) (UF), Red Sea coast of Saudi Arabia. A, overall habitus; B, frontal view of cephalothorax; C, ventral view of cephalothorax showing thoracic sternum and vulvae.
FIGURE 5. Buccal cavity and third maxillipeds. A in Ankerius aenigmaticus, a new genus and new species of aphanodactylid crab symbiotic with polychaetes from the Red Sea coast of Saudi Arabia (Crustacea: Decapoda: Brachyura: Aphanodactylidae)
FIGURE 5. Buccal cavity and third maxillipeds. A, Selwynia laevis Borradaile, 1903, holotype male (7.1 × 5.6 mm) (CUMZ I. 63872), Hulule Atoll, Maldives, coll. J. S. Gardiner, 1900; B, Gandoa brevipes (H. Milne Edwards, 1853), female (7.2 × 5.0 mm) (ZSM 1277 / 1) [holotype of Voeltzkowia zanzibarensis Lenz, 1905], Kokotoni, Zanzibar, coll. July 1889; C, Gustavus mecognathus Ahyong & Ng, 2009, paratype female (13.9 × 8.0 mm) (ZRC 2010.0252), SW Cocos Barrier, Guam, near small pass on large terebellid worm, coll. G. Paulay, 20 March 2000; D, Ankerius aenigmaticus gen. et sp. nov., female holotype (7.2 × 7.0 mm) (UF), Red Sea coast of Saudi Arabia.
Figure 13 in Taxonomy of Oncaeidae (Copepoda, Poecilostomatoida) from the Red Sea. V. Three species of Spinoncaea gen. nov. (ivlevi-group), with notes on zoogeographical distribution
Figure 13. Spinoncaea tenuis sp. nov., female (Red Sea). (A) Antenna; (B) labrum, anterior; (C) same, posterior; (D) mandible, showing individual elements; (E) maxillule; (F) maxilla; (G) maxilliped, anterior; (H) paragnaths, ventral.
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