Find research datasets worth reusing

opencc-by-4.0Jun 2015View details →

Figure 8 in Seasonal changes in the population structure of dominant planktonic copepods collected using a sediment trap moored in the western Arctic Ocean

Figure 8. Seasonal changes in sea ice concentration, daylight hours, chl. a, and total mass flux from January to December (upper panel). The ecological characteristics of the five dominant copepods (lower panel). The open and solid bars indicate the high abundance and reproductive periods for each species, respectively.

opencc-by-4.0Mar 2022View details →

Climate transition at the Eocene - Oligocene influenced by bathymetric changes to the Atlantic - Arctic oceanic gateways

This data includes input and output fields of the Norwegian Earth System model simulations targeting the Eocene-Oligocene boundary, and the data accompanies a scientific article with the same name (DOI 10.1073/pnas.2115346119). This data is aimed to provide users enough data to reproduce the figures appearing in the article and to analyze the steady state behavior beyond what is discussed in the article. We also provide the ocean bathymetry and atmospheric topography that allows others to create a model setup similar to what is used in the article. For most files there are two output periods 1450-1500 is a common period for the experiments: Late Eocene and cases 1-5. This period the average over the last 50 years of the experiments that were branched of the common spinup at year 1000. The latter period 2650-2700 includes continuation of the Late Eocene and Case 2 simulations and their lower CO2 counterparts (branched of from their parent simulations at year 2000). For more information of the simulations and the setup, we refer to the parent article. In addition to the output files, we also share the grid files of the ocean model (grid*.nc) and the topography used by the atmospheric model (ATM_TOPO.nc). Note that we did not change the land mask between the experiments which is why there is only one ATM_TOPO, but one grid file per each experiment.

dryad40/100

Future seasonal changes in habitat for Arctic whales during predicted ocean warming

Ocean warming is causing shifts in the distributions of marine species, but the location of suitable habitats in the future is unknown, especially in remote regions such as the Arctic. Using satellite tracking data from a 28-year long period, covering all three endemic Arctic cetaceans (227 individuals) in the Atlantic sector of the Arctic, together with climate models under two emission scenarios, species distributions were projected to assess responses of these whales to climate change by the end of the century. While contrasting responses were observed across species and seasons, long-term predictions suggest northward shifts (243 km in summer vs. 121 km in winter) in distribution to cope with climate change. Current summer habitats will decline (mean loss: -25%), while some expansion into new winter areas (mean gain: +3%) is likely. However, comparing gains vs. losses raises serious concerns about the ability of these polar species to deal with the disappearance of traditional colder habitats.

opencc-zeroJun 2022View details →

Fig. 4 in Variation of shell shape in Solariella obscura (Vetigastropoda: Trochoidea) in the Eurasian Arctic seas and adjacent part of the Western Pacific Ocean

Fig. 4. PCA scatterplots: A–C – varieties of Solariella obscura; typical form – red crosses, «var. intermedia» – black dots, «var. bella» – blue squares; D–F – geographic groups; Arctic – green crosses, Pacific – violet circles.

Fig. 1 in Variation of shell shape in Solariella obscura (Vetigastropoda: Trochoidea) in the Eurasian Arctic seas and adjacent part of the Western Pacific Ocean

Fig. 1. Varieties of Solariella obscura: A – «var. intermedia», Barents Sea, Iokangskie Islands, 68°04.38′ N, 39°34.70′ E, ZIN 28/4289; B – typical form, Bering Sea, 29 m, 64°02.2′ N, 170°04′ W, ZIN 675/56388; C – «var. bella», Barents Sea, 154 m, 69°40.597′ N, 34°06.184′ E. Scale bar 3 mm.

Fig. 2 in Variation of shell shape in Solariella obscura (Vetigastropoda: Trochoidea) in the Eurasian Arctic seas and adjacent part of the Western Pacific Ocean

Fig. 2. Scheme of shell measurements (A–B) and counting of whorls number (C). Shell of «var. bella». SH – shell height; BWH – body whorl height; AH – aperture height; AW – aperture width; SW – shell width; UW – umbilicus width; spiral arrow indicates the first whorl, whorls number of the shell = 3.9.

Fig. 3 in Variation of shell shape in Solariella obscura (Vetigastropoda: Trochoidea) in the Eurasian Arctic seas and adjacent part of the Western Pacific Ocean

Fig. 3. Box plots of conchological parameters: A – shell height; B – body whorl height; C – aperture height; D – shell width; E – umbilicus width; F – whorls number. 1 – «var. intermedia», 2 – typical form, 3 – «var. bella».

opencc-by-4.0Dec 2017View details →

Fig. 2 in Observations ofApparent LoricaVariability inSalpingacantha (Ciliophora: Tintinnida) in the Northern Pacific and Arctic Oceans

Fig. 2. Varieties of Salpingacantha from a 2016 sample in the Chuk- chi Sea (2016 St 29). In the sample no typical Salpingella acuminata were found. In the conspectus of Kofoid and Campbell (1929) the form "a" most closely resembles S. ampla, "b" S. unguiculata, "c" S. simplex, "d" S. perca, and "e" S. crenulata. Note that form "c" if rotated 45° could easily be mistaken for Salpingella acuminata.

opencc-by-4.0Dec 2017View details →

Fig. 1 in Observations ofApparent LoricaVariability inSalpingacantha (Ciliophora: Tintinnida) in the Northern Pacific and Arctic Oceans

Fig. 1. Varieties of Salpingacantha from a 2015 sample in the Chuk- chi Sea (2015 St 5). In the sample, typical Salpingella acuminata ("a") were dominant with 70 cells found for the 15 Salpingacantha cells encountered. The "b" most closely corresponds with S. crenulata, "c" and "d" with S. perca, "e" with S. unguiculata and "f" with S. ampla. Note that form "e", if rotated 45°, could easily be mistaken for Salpingella acuminata.

opencc-by-4.0Dec 2017View details →

Fig. 3 in Observations ofApparent LoricaVariability inSalpingacantha (Ciliophora: Tintinnida) in the Northern Pacific and Arctic Oceans

Fig. 3. The illustrations of Salpingacantha species from Kofoid and Campbell 1929 arranged as the evolutionary series given in Kofoid & Campbell 1939 in which S. perca "presents the earliest phase in evolution of toothed oral margin": a. S. perca, b. S. crenulata, c. S. exilis, d. S. simplex, e. S. unguiculata, f. S. ampla, and g. S. undata. Note that S. perca, S. exilis, and S. unguiculata are depicted with a diaphragm apparatus similar to those of Salpingella (Agatha 2010).

Fig. 2 in New observations of Papulifères, putative ciliate cysts, from the plankton of the Chukchi Sea (Western Arctic Ocean) in August of 2023

Fig. 2. New forms of Papulifères found in samples from the Chukchi Sea region taken in August 2023. Forms A–D are new spindle-shaped Fusopsis forms, and Forms E–H are new spherical or oblong-shaped Sphaeropsis forms. Morphology notes and stations in which each were found along with the nominal concentrations found in the samples are given in Table 2.

Fig. 1 in New observations of Papulifères, putative ciliate cysts, from the plankton of the Chukchi Sea (Western Arctic Ocean) in August of 2023

Fig. 1. Map of the Western Arctic Ocean showing the 36 station locations sampled using a 20 µm mesh plankton net in the Chukchi Sea region during August of 2023. Note that station locations yielding samples in which Papulifère, putative ciliate cysts forms, were found (putative cyst stations) were located throughout the region sampled. Detailed station characteristics are given in Table 1.

opencc-by-4.0Aug 2024View details →

SDUST2024MSS_AO: a mean sea surface model of the Arctic Ocean based on CryoSat-2 SAR altimeter data

This model is a mean sea surface model for ice-covered regions, using CryoSat-2 satellite SAR mode altimeter data from July 2010 to December 2023. The heights are referenced to the WGS-84 ellipsoid, and the grid size is 5 km × 5 km.

Table 2 in New observations of Papulifères, putative ciliate cysts, from the plankton of the Chukchi Sea (Western Arctic Ocean) in August of 2023

Table 2. The morphological characteristics and sample data (stations and nominal concentrations) of the apparently new Papulifère forms found in the samples taken in 2023. LD refers to longest dimension of the main body (excluding filaments if present). In Morphology Notes, ‘Differs from fig. x.x’ refer to the figures in Dolan et al. 2023; figures are also given in the Supplementary File.<table><thead><tr><th>Cyst type</th><th>Morphology Notes</th><th>Station (s) found [conc. #L-1] # specimens</th></tr></thead><tbody><tr><th>2A</th><td>Fusopsis sp., spindle smooth surface/LD 115 µm Differs from fig 6j in larger size and absence of a posterior knob</td><td>37 [0.01] 2</td></tr><tr><th>2B</th><td>Fusopsis sp., spindle smooth surface/LD 75–85/µm short (3–5µm) filaments Differs from figs 6 f,g,l in larger size and spine lengths & numbers</td><td>40 [.007] 1</td></tr><tr><th>2C</th><td>Fusopsis sp., spindle smooth surface/LD 50µm/5 long, 25 µm filaments Differs from fig 6c in overall shape small size</td><td>54 [0.016] 1</td></tr><tr><th>2D</th><td>Fusopsis sp., spindle smooth surface/LD 50 µm/ 3 pairs 30 µm filaments Differs from fig 6g,1 in larger size and filaments in pairs</td><td>59 [0.007] 1</td></tr><tr><th>2E</th><td>Sphaeropsis sp., oblong smooth surface/ LD 35µm/ 3 10 µm filaments Differs from fig 7f in smaller size and smooth surface</td><td>10 [0.04] 1</td></tr><tr><th>2F</th><td>Sphaeropsis sp., oblong smooth surface/LD 70 µm Differs from fig 7h in smaller size and ovoid shape</td><td>10 [0.01] 4</td></tr><tr><th>2G</th><td>Sphaeropsis sp., spherical smooth surface/LD 80 µm Differs from fig 7h in smaller size</td><td>39 [0.08] 2, 60 [0.08] 1</td></tr><tr><th>2H</th><td>Sphaeropsis sp., oblong smooth surface/LD 105 µm Differs in overall size and shape from other Sphaeropsis in fig7</td><td>40 [0.004] 1</td></tr></tbody></table>

Table 1. Summary data for the 36 in New observations of Papulifères, putative ciliate cysts, from the plankton of the Chukchi Sea (Western Arctic Ocean) in August of 2023

Table 1. Summary data for the 36 stations sampled in 2023. Depth given is the vertical extent of the plankton net tow from the depth indicated to the surface. Chlorophyll a concentration (Chl a) is average integrated concentration (µg L-1) throughout the water column from the surface to approximately the depth of the plankton net tow. Cyst types found refer to the new forms shown in here in Figure 2 (2A-2H), and in the Figures 6 (6A, 6E, 6D) and 7 (7A, 7G, 7H, 7I, 7J, 7K, 7N) in Dolan et al. (2023). For convenience, the supplementary file contains images of all now known Chukchi Sea Papulifère forms in two plates, one showing the 16 spindle-shaped Fusopsis forms, another showing the 18 the spherical and oblong Sphaeropsi s forms.<table><thead><tr><th>St #</th><th>Date Aug 2023</th><th>lat (N°)</th><th>long (W°)</th><th>Tow Depth (m)</th><th>Station Depth</th><th>Chl a</th><th>SST (C°)</th><th>cyst types found</th></tr></thead><tbody><tr><th>1</th><td>3</td><td>65,17</td><td>–168,69</td><td>45</td><td>55</td><td>1,45</td><td>9,9</td><td>Ø</td></tr><tr><th>2</th><td>3</td><td>66,63</td><td>–168,69</td><td>35</td><td>45</td><td>7,47</td><td>7,8</td><td>Ø</td></tr><tr><th>3</th><td>3</td><td>67,67</td><td>–168,96</td><td>45</td><td>55</td><td>9,92</td><td>6</td><td>Ø</td></tr><tr><th>8</th><td>4</td><td>68,24</td><td>–167,12</td><td>38</td><td>48</td><td>0,74</td><td>12,6</td><td>Ø</td></tr><tr><th>9</th><td>4</td><td>69,17</td><td>–168,67</td><td>43</td><td>53</td><td>0,58</td><td>9,9</td><td>Ø</td></tr><tr><th>10</th><td>5</td><td>70,50</td><td>–168,67</td><td>35</td><td>45</td><td>6,48</td><td>6</td><td>2E, 2F</td></tr><tr><th>11</th><td>5</td><td>71,43</td><td>–168,67</td><td>40</td><td>50</td><td>0,75</td><td>7,9</td><td>Ø</td></tr><tr><th>13</th><td>5</td><td>72,36</td><td>–168,66</td><td>50</td><td>60</td><td>6,16</td><td>1</td><td>6A</td></tr><tr><th>16</th><td>6</td><td>73,89</td><td>–168,19</td><td>100</td><td>183</td><td>1,5</td><td>1</td><td>Ø</td></tr><tr><th>18</th><td>6</td><td>74,80</td><td>–167,90</td><td>100</td><td>195</td><td>0,413</td><td>1</td><td>Ø</td></tr><tr><th>21</th><td>7</td><td>76,00</td><td>–170,49</td><td>100</td><td>1315</td><td>1,22</td><td>–0,5</td><td>6A, 7H, 7K, 7N</td></tr><tr><th>23</th><td>8</td><td>77,00</td><td>–170,00</td><td>100</td><td>2214</td><td>0,53</td><td>–1,1</td><td>6A</td></tr><tr><th>24</th><td>8</td><td>77,00</td><td>–174,99</td><td>100</td><td>2012</td><td>0,34</td><td>–1,3</td><td>Ø</td></tr><tr><th>25</th><td>9</td><td>77,00</td><td>179,95</td><td>100</td><td>1081</td><td>0,09</td><td>–1,2</td><td>OE</td></tr><tr><th>27</th><td>12</td><td>78,54</td><td>–177,58</td><td>100</td><td>1009</td><td>0,07</td><td>–1,2</td><td>7K</td></tr><tr><th>28</th><td>13</td><td>80,00</td><td>172,40</td><td>100</td><td>2702</td><td>0,14</td><td>–1</td><td>6A</td></tr><tr><th>29</th><td>14</td><td>79,00</td><td>172,80</td><td>100</td><td>2561</td><td>0,15</td><td>–0,9</td><td>Ø</td></tr><tr><th>30</th><td>14</td><td>78,00</td><td>173,20</td><td>100</td><td>1133</td><td>0,14</td><td>0,3</td><td>Ø</td></tr><tr><th>31</th><td>15</td><td>77,00</td><td>173,60</td><td>100</td><td>740</td><td>0,4</td><td>0,2</td><td>Ø</td></tr><tr><th>32</th><td>15</td><td>76,00</td><td>173,61</td><td>100</td><td>265</td><td>0,2</td><td>–1,1</td><td>7H</td></tr><tr><th>33</th><td>16</td><td>75,00</td><td>173,60</td><td>100</td><td>147</td><td>0,07</td><td>–0,06</td><td>6E</td></tr><tr><th>36</th><td>16</td><td>74,00</td><td>170,16</td><td>40</td><td>52</td><td>0,1</td><td>–0,8</td><td>Ø</td></tr><tr><th>37</th><td>17</td><td>74,69</td><td>174,62</td><td>60</td><td>72</td><td>0,2</td><td>–1</td><td>2A</td></tr><tr><th>39</th><td>18</td><td>75,73</td><td>177,18</td><td>100</td><td>499</td><td>0,15</td><td>–1,3</td><td>2G</td></tr><tr><th>40</th><td>20</td><td>75,07</td><td>176,80</td><td>100</td><td>196</td><td>0,31</td><td>–1,2</td><td>2B, 2H, 7I, 7N</td></tr><tr><th>43</th><td>21</td><td>75,16</td><td>–179,97</td><td>100</td><td>539</td><td>0,35</td><td>–1,4</td><td>6D, 6E, 7J</td></tr><tr><th>45</th><td>21</td><td>75,15</td><td>–176,00</td><td>100</td><td>327</td><td>1,36</td><td>–1</td><td>Ø</td></tr><tr><th>47</th><td>22</td><td>75,24</td><td>–171,97</td><td>100</td><td>505</td><td>2,73</td><td>–0,7</td><td>6A, 7J</td></tr><tr><th>50</th><td>23</td><td>75,69</td><td>–166,64</td><td>100</td><td>392</td><td>3,1</td><td>–0,9</td><td>6A, 7H, 7N</td></tr><tr><th>52</th><td>23</td><td>76,57</td><td>–164,36</td><td>100</td><td>550</td><td>0,019</td><td>–1,1</td><td>7G</td></tr><tr><th>54</th><td>24</td><td>77,47</td><td>–164,10</td><td>100</td><td>280</td><td>0,32</td><td>–1,3</td><td>2C, 7J</td></tr><tr><th>56</th><td>25</td><td>77,49</td><td>–158,73</td><td>100</td><td>1323</td><td>0,02</td><td>–1,3</td><td>7H, 7J</td></tr><tr><th>57</th><td>26</td><td>76,30</td><td>–156,22</td><td>100</td><td>725</td><td>0,23</td><td>–0,1</td><td>Ø</td></tr><tr><th>58</th><td>26</td><td>76,52</td><td>–159,78</td><td>100</td><td>2113</td><td>0,21</td><td>–1</td><td>Ø</td></tr><tr><th>59</th><td>27</td><td>75,50</td><td>–161,15</td><td>100</td><td>2098</td><td>0,2</td><td>–0,5</td><td>2D, 7A</td></tr><tr><th>60</th><td>27</td><td>74,52</td><td>–162,15</td><td>100</td><td>1596</td><td>0,27</td><td>1,8</td><td>2G, 6A, 7A, 7H</td></tr></tbody></table>

opencc-zeroJan 2024View details →

Linked collectors and determiners for: Arctic Ocean Diversity.

Natural history specimen data linked to collectors and determiners held within, "Arctic Ocean Diversity". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/84b72ee4-f762-11e1-a439-00145eb45e9a">https://bionomia.net/dataset/84b72ee4-f762-11e1-a439-00145eb45e9a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/84b72ee4-f762-11e1-a439-00145eb45e9a">https://gbif.org/dataset/84b72ee4-f762-11e1-a439-00145eb45e9a</a>. Formatted as a Frictionless Data package.

opencc-by-4.0Feb 2023View details →

Concentrations of dissolved dimethyl sulfide (DMS), methanethiol and other trace gases in context of microbial communities from the temperate Atlantic to the Arctic Ocean

This archive contains bioinformatic code and data files to reproduce bacterial analyses from Gros et al. (Biogeosciences; https://doi.org/10.5194/bg-2022-150). In this study, seawater samples collected along an Atlantic-Arctic transect (55-80°N) were evaluated for microbial community composition and trace gas concentrations. Microbes were sampled underway using "AUTOFIM" automatic filtration; and bacterial communities amplicon-sequenced using 16S rRNA gene primers. Raw sequence data is available at ENA under BioProject PRJEB50492. The archive contains:   - Rmarkdown for primer-clipping, ASV generation and taxonomy assignment: 1_DADA.Rmd   - Rscript for ASV and metadata processing; alpha-diversity calculations: 2_DataLoad.R   - Rscript for generation of manuscript figures: 3_Results.R   - Rscript for generation of supplementary figures: 4_Supplement.R   - Metadata and environmental parameters as .txt files

opencc-by-4.0Apr 2023View details →

Fig. 6. The 12 in On Papulifères, putative ciliate cysts of diverse morphologies, with new observations from the plankton of the Chukchi Sea (Arctic Ocean)

Fig. 6. The 12 fusiform (spindle-shaped, and oblong) Fusuposis papuliferid cyst forms found in Chukchi Sea plankton net tow material. The specimens shown in A, B, D, E, I, K, and L are all from the 2022 station 16. Scale bars all represent 50 µm.

opencc-by-4.0Apr 2023View details →

Fig. 9 in On Papulifères, putative ciliate cysts of diverse morphologies, with new observations from the plankton of the Chukchi Sea (Arctic Ocean)

Fig. 9. Geographical distribution of the records of the occurrences of Fusopsis in the 155,000 samples collected with the Continuous Plankton Recorder (CPR) across the North Atlantic from 1958 to 1998, adapted from CPR (2004). Note the occurrence records from north of approximately 45°N and into the Arctic waters, in contrast to the absence of records from localities south of about 45°N. The CPR is a plankton sampling device towed by ships of opportunity which provides samples of the plankton of near surface waters captured on a filter gauze of approximately 270 µm mesh. For details see Beaugrand (2004) and CPR (2004). For the history of the device see Dolan (2022).