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178 results for “Spitsbergen”
FIGURE 5 in Two Interesting Damaeid Mites (Acari, Oribatida, Damaeidae Berlese, 1896) From The British Isles And Svalbard (Spitsbergen, Norway), With A Description Of Kunstidamaeus Arcticus N.Sp.
FIGURE 5: Epidamaeus sp.(aff. floccosus Behan-Pelletier and Norton, 1985): A – lateral view of rostrum, B – lateral view on bothridial area and anterior part of notogaster, C – genital setae g1-g5, aggenital seta and adanal seta ad3; D – lateral part of prodorsum; E – parabothridial apophyses Sa and Sp; F – discidium; G – spinae adnatae (scale bars = 25 µm).
FIGURE 3 in Two Interesting Damaeid Mites (Acari, Oribatida, Damaeidae Berlese, 1896) From The British Isles And Svalbard (Spitsbergen, Norway), With A Description Of Kunstidamaeus Arcticus N.Sp.
FIGURE 3: Kunstidamaeus arcticus n.sp.: A – leg I; B – trochanter, femur and genu IV; C – tibia and tarsus IV; D – femur and genu IV, axial view; E – tibia IV, axial view; F – trochanter III; G – genu and tibia III (scale bar = 50 µm).
FIGURE 4 in Two Interesting Damaeid Mites (Acari, Oribatida, Damaeidae Berlese, 1896) From The British Isles And Svalbard (Spitsbergen, Norway), With A Description Of Kunstidamaeus Arcticus N.Sp.
FIGURE 4: Epidamaeus sp. (aff. floccosus Behan-Pelletier and Norton, 1985): A – dorsal view, legs only partly depicted; B – ventral view, legs and gnathosoma only partly depicted (scale bar = 200 µm).
In-situ parameters, nutrients and dissolved carbon distribution in the water column and pore waters of Arctic Fjords (Western Spitsbergen) during a melting season
<p>A nutrient distribution such as phosphate (PO₄³⁻), ammonium (NH₄⁺), nitrate (NO₃⁻), dissolved silica (Si), total dissolved nitrogen (TN), dissolved organic nitrogen (DON) together with dissolved organic carbon (DOC) and inorganic carbon (DIC), was investigated during a high melting season in 2021 in the western Spitsbergen fjords (Hornsund, Isfjorden, Kongsfjorden, and Krossfjorden). Both the water column and the pore water were investigated for nutrients and dissolved carbon distribution and gradients. The water column concentrations of most measured parameters such as PO₄³⁻, NH₄⁺, NO₃⁻, Si, and DIC showed significant changes among fjords and water masses. In addition, pore water gradients of PO₄³⁻, NH₄⁺, NO₃⁻, Si, DIC and DOC revealed significant variability between fjords and are likely substantial sources of the investigated elements for the water column. The obtained dataset reflects differences in hydrography and biogeochemical ecosystem function of the western Spitsbergen fjords and may form the base for further modelling of physical oceanographic and biogeochemical processes within the investigated fjord systems.</p> <p> </p>
Fig. 3 in Lower Permian bryozoans from southern and central Spitsbergen, Svalbard
Fig. 3. Lithological log and distribution of bryozoans through the Treskelen section.
Fig. 2 in Lower Permian bryozoans from southern and central Spitsbergen, Svalbard
Fig. 2. Lithostratigraphy of Hornsund area and inner Isfjorden area (emended from Dallmann 1999).
Fig. 1 in Lower Permian bryozoans from southern and central Spitsbergen, Svalbard
Fig. 1. Map of Svalbard with localities mentioned in the text.
AREX 2017 selected hydrographic profiles: CTD and oxygen concentration in the south-west Spitsbergen area
<p>Data from AREX 2017 cruise aboard rv Oceania collected in July 2017 on the south-western Svalbard shelf in the MathWorks Matlab table and Microsoft Excel formats.</p> <p>This data selection was used and described in Vivier et al., 2024: Dense water production in Storfjorden, Svalbard, from a one-year time series of observations and a simple 3 model: Are polynyas in a warming Arctic exporting heat to the deep ocean? (for publication in JGR Oceans).</p> <p>The sampling took place during the Arctic Experiments AREX carried out by the Institute of Oceanology, Polish Academy of Sciences (IO PAN), Sopot, Poland since 1987 until present.</p> <p>During the AREX 2017 cruise CTD (conductivity, temperature, depth) vertical profiles were taken from surface to bottom with Sea-Bird Electronics, Inc. SBE 911plus CTD system (composed of duplicate SBE 3plus Temperature sensors, SBE 4C Conductivity sensors, and a Digiquartz® Pressure sensor, all calibrated by the manufacturer before each cruise). In addition to standard sensors, the system was equipped with the SBE43 dissolved oxygen sensor. Raw data were then filtered and processed with the SBE Data Processing Software (averaged to 1 dbar intervals) and further analysed and visualised in the MATLAB and exported to Excel (variables were rounded, blank values kept). Raw data are available from the IO PAN, Sopot, Poland (https://www.iopan.pl/).</p>
Active gas seepage in western Spitsbergen fjords, Svalbard archipelago: spatial extent and geological controls
<p>The following digital data package is provided as part of the submission of the publication Rodes et al. (2023) <em>Active gas seepage in western Spitsbergen fjords, Svalbard archipelago: spatial extent and geological controls</em>, considered for publication in the journal Frontiers in Earth Science. The dataset contains the distribution and characteristics of the gas flares observed during the HE-449 cruise in 2015 and the GASGEM cruise in 2021. Moreover, it contains the interpreted outcropping areas of the geological units in Isfjorden and Van Mijenfjorden. Each dataset is provided in GeoJSON, Geopackage and Shapefile file extensions. Finally, we provide a minimal working example to calculate the flare density per multibeam area of outcropping geological units.</p>
Historic hut on the island of Spitsbergen
This hut was once part of a mining settlement on the island of Spitsbergen in the Polar Sea and was imported from Great Britain as a prefabricated kit at the beginning of the twentieth century. The numbering of the beams, which allowed the hut to be easily assembled, can still be seen today. As there are no natural wood resources on the entire island, it is precious and the hut was reused elsewhere after the mine was abandoned in 1908 and is probably one of the oldest buildings in the archipelago today. The rapid thawing of the permafrost soils due to climate change is endangering the survival of the remains of the oldest year-round mine on Spitsbergen. In the background is a photograph of the Advent City mine at the time of its construction in 1905. In addition the American mine owner John Munro Longyear reports about the unsuccessful mine in summer 1909. More at this point: https://escience-center.uni-tuebingen.de/svalbard/ Source: Objaverse 1.0 / Sketchfab
Data from: Extreme diversity in the songs of Spitsbergen's bowhead whales
Almost all mammals communicate using sound, but few species produce complex songs. Two baleen whales sing complex songs that change annually, though only the humpback whale (Megaptera novaeangliae) has received much research attention. This study focuses on the other baleen whale singer, the bowhead whale (Balaena mysticetus). Members of the Spitsbergen bowhead whale population produced 184 different song types over a 3-year period, based on duty-cycled recordings from a site in Fram Strait in the NE Atlantic. Distinct song types were recorded over short periods, lasting at most some months. This song diversity could be the result of a possibly increasing population, or immigration of animals from other populations that are no longer isolated from each other by heavy sea ice. However, this explanation does not account for the within season and annual shifting of song types. Other possible explanations, is that the extraordinary diversity in songs is the result of weak selection pressure for interspecific identification or for maintain song characteristics or, alternatively, strong pressure for novelty in a small population.
FIGURES 1–12 in Halecium arcticum (Cnidaria: Hydrozoa), a new species of hydroid from Spitsbergen
FIGURES 1–12. Halecium arcticum sp. nov, all after preserved material from Spitsbergen. (1) Colony silhouettes, the left one is polysiphonic, the right one monosiphonic, scale bar 5 mm. (2) Typical branching pattern, scale bar 0.2 mm. (3) Terminal region of a branch with two hydrothecae, note presence of a pseudodiaphragm below diaphragm and the short, quadrangular segments, scale bar 0.1 mm. (4) Primary and secondary hydrothecae, scale bar 0.1 mm. (5) Female gonotheca in frontal view, scale bar 0.5 mm. (6) Same as (5), in side view. (7–9) Female gonothecae, note variation, same scale as (5). (10) Distal end of female gonotheca with characteristic horns flanking the opening, scale bar 0.2 mm. (11) Rare, mature, female gonotheca lacking distal horns; same scale as 10. (12) Mature male gonotheca seen from broad side, with sperm mass, scale bar 0.2 mm. (13) Immature male gonotheca, same scale as (12).
FIGURE 22. Tharyx circacutus n in New species of Chaetozone and Tharyx (Polychaeta: Cirratulidae) from the Alaskan and Canadian Arctic and the Northeastern Pacific, including a description of the lectotype of Chaetozone setosa Malmgren from Spitsbergen in the Norwegian Arctic
FIGURE 22. Tharyx circacutus n. sp. Photomicrographs: A, anterior end, dorsal view; B, anterior end, left lateral view; C, posterior end, ventro-lateral view; D, posterior end, right lateral view. (A, holotype, LACM-AHF Poly 6556; B‒D, paratype, A LACM-AHF Poly 6557; all stained with Shirlastain A).
FIGURE 19. Tharyx alaskensis n in New species of Chaetozone and Tharyx (Polychaeta: Cirratulidae) from the Alaskan and Canadian Arctic and the Northeastern Pacific, including a description of the lectotype of Chaetozone setosa Malmgren from Spitsbergen in the Norwegian Arctic
FIGURE 19. Tharyx alaskensis n. sp. A, anterior end, dorsal view; B, posterior end, dorsal view; C, pygidium, dorsal view; D, posterior parapodium; E, detail of posterior spinous notoseta, inset not to scale; F, detail of a neuropodial acicular spine in a posterior parapodium, inset not to scale. (All paratypes, LACM-AHF Poly 6555).
FIGURE 14. Chaetozone pugettensis n in New species of Chaetozone and Tharyx (Polychaeta: Cirratulidae) from the Alaskan and Canadian Arctic and the Northeastern Pacific, including a description of the lectotype of Chaetozone setosa Malmgren from Spitsbergen in the Norwegian Arctic
FIGURE 14. Chaetozone pugettensis n. sp. Photomicrographs: A, anterior end, dorsal view; B, anterior end, ventral view; C, entire animal; D, anterior end, right lateral view; E, posterior end showing elevated parapodia with spines and pygidial segment; F, posterior parapodium, anterior view; G, detail of posterior notopodial acicular spines and capillaries; H, detail of posterior neuropodial acicular spines and capillaries. (All paratypes LACM-AHF Poly 6545; all stained with Shirlastain A).
FIGURE 9. Chaetozone ruffi n in New species of Chaetozone and Tharyx (Polychaeta: Cirratulidae) from the Alaskan and Canadian Arctic and the Northeastern Pacific, including a description of the lectotype of Chaetozone setosa Malmgren from Spitsbergen in the Norwegian Arctic
FIGURE 9. Chaetozone ruffi n. sp. Paratypes: A, anterior end, dorsal view; B, anterior end, lateral view; C, posterior end, ventral view; D, notopodial acicular spines and capillaries from far posterior segment; E, neuropodial acicular spines and capillaries from far posterior segment. (paratypes, LACM-AHF -Poly 6541).
FIGURE 13. Chaetozone pugettensis n in New species of Chaetozone and Tharyx (Polychaeta: Cirratulidae) from the Alaskan and Canadian Arctic and the Northeastern Pacific, including a description of the lectotype of Chaetozone setosa Malmgren from Spitsbergen in the Norwegian Arctic
FIGURE 13. Chaetozone pugettensis n. sp. A, anterior end, dorsal view; B, anterior end, right lateral view; C, posterior end, dorsal view; D, posterior parapodium, anterior view; E, detail of posterior notopodial acicular spines and capillaries; F, detail of posterior neuropodial acicular spines and capillaries. (All paratypes LACM-AHF Poly 6545).
FIGURE 6. Chaetozone bathyala n in New species of Chaetozone and Tharyx (Polychaeta: Cirratulidae) from the Alaskan and Canadian Arctic and the Northeastern Pacific, including a description of the lectotype of Chaetozone setosa Malmgren from Spitsbergen in the Norwegian Arctic
FIGURE 6. Chaetozone bathyala n. sp. Photomicrographs: A, entire animal, dorsal view; B, anterior end, ventral view; C, anterior end, right lateral view, showing MG staining pattern; D, anterior end, lateral view; E, posterior end, lateral view; F, posterior neuropodial acicular spines; G, oocyte. (A‒D, F, paratype, LACM-AHF Poly 6536; E, holotype, LACM-AHF Poly 6535; A‒B, D‒E, stained with Shirlastain A; C, stained with MG).
FIGURE 3. Chaetozone pigmentata n in New species of Chaetozone and Tharyx (Polychaeta: Cirratulidae) from the Alaskan and Canadian Arctic and the Northeastern Pacific, including a description of the lectotype of Chaetozone setosa Malmgren from Spitsbergen in the Norwegian Arctic
FIGURE 3. Chaetozone pigmentata n. sp. Paratypes (USNM 51221): A, anterior end, dorsal view; B, anterior end, right lateral view; C, far posterior parapodium, anterior view; D, posterior end, dorsal view; E, neuropodial acicular spine and capillary from far posterior segment; F, notopodial acicular spine from far posterior segment. (All paratypes, USNM 51221).
FIGURE 2. Chaetozone setosa Malmgren, 1867. A. Right setiger 78 in New species of Chaetozone and Tharyx (Polychaeta: Cirratulidae) from the Alaskan and Canadian Arctic and the Northeastern Pacific, including a description of the lectotype of Chaetozone setosa Malmgren from Spitsbergen in the Norwegian Arctic
FIGURE 2. Chaetozone setosa Malmgren, 1867. A. Right setiger 78, anterior view; B, detail of some notoacicular spines and capillaries from same; C, detail of some neuroacicular spines and capillaries from same; D, detail of neuroacicular. (All photographed by J.A. Blake from slide mount of setiger 78, prepared by M.E. Petersen from paralectotype SMNH 1493-33).
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