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2,107 results for “margins”
Climatological maps of sea ice variability for the Antarctic marginal ice zone
<p>Monthly climatologies of a statistical indicator of sea ice variability computed from daily maps of sea ice concentration (SIC) from satellites (Vichi, 2022). The sigma_SIA indicator is based on the standard deviation of SIC daily anomalies computed over<br> the monthly time scales, using a monthly climatology over the period 1989-2019 as the baseline. The analysis starts from year 1989 since before that period data were every second day.</p> <p><strong>Please use the most updated version of this dataset and cite the main DOI unless required</strong></p> <p>The following files have been derived from NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4 (<a href="https://doi.org/10.7265/efmz-2t65">https://doi.org/10.7265/efmz-2t65</a> and used in Vichi (2022). The code to produce them is available at the following repository <a href="https://github.com/mvichi/antarcticMIZ">https://github.com/mvichi/antarcticMIZ</a> (<a href="https://doi.org/10.25375/uct.21103363">DOI:10.25375/uct.21103363</a>) </p> <ol> <li><strong>NSIDC_cdr_clim_m_sigmaSIA.nc</strong>: Climatological monthly sigma_SIA (climatological 'pooled' monthly std of daily anomaly) from NOAA/NSIDC CDR V4 Southern Hemisphere Sea Ice Concentration</li> <li><strong>NSIDC_cdr_clim_m_maskMIZ.nc</strong>: Climatological mask of the MIZ extent using a sigma_SIA>0.1 criterion</li> <li><strong>NSIDC_cdr_clim_m_sigmaSIA_exceedance.nc</strong>: Climatological probability maps of exceeding sigma_SIA>0.1 and sigma_SIA>0.2</li> <li><strong>NSIDC_cdr_m_sigmaSIA.nc</strong>: Monthly sigma_SIA from NOAA/NSIDC CDR V4 Southern Hemisphere Sea Ice Concentration. Please note that file 1 above is not the climatology obtained from this file.</li> </ol> <p>NetCDF files 1-3 contain 12 monthly arrays with the climatological sigma_SIA computed over the period 1989-2019. Please note that the indicator in these file is in % of SIC, while in the original paper it is presented in fractional units.</p> <p>File 4 has 396 records for all the months in the analyzed period. The units are fractional as in Vichi (2022).</p> <p><strong>Reference</strong></p> <p>Vichi, M.: An indicator of sea ice variability for the Antarctic marginal ice zone, The Cryosphere, 16, 4087–4106, <a href="https://doi.org/10.5194/tc-16-4087-2022">https://doi.org/10.5194/tc-16-4087-2022</a>, 2022.</p>
Climate Record of Wintertime Wave-Affected Marginal Ice Zones in the Atlantic Arctic based on CryoSat-2,2010-2022
<p>This record contains data related to article "A 12-Year Climate Record of Wintertime Wave-Affected Marginal Ice Zones in the Atlantic Arctic based on CryoSat-2 ". Wave-affected marginal ice zone (MIZ) is an integral part of the sea ice cover, and a key region for air-ice-sea interactions in polar regions. We develop a novel retrieval algorithm for wave-affected MIZs based on the delay-Doppler radar altimeter onboard CryoSat-2 (CS2). CS2 waveform power and the waveform stack statistics are used to determine the MIZ locations. Based on the CS2 data since 2010, we generate a record of wave-affected MIZs in the Atlantic Arctic, spanning 12 winters between 2010 and 2022.</p> <p>The dataset contains two parts. First, the txt file contains retrieved MIZ locations obtained from each single track. Each column of data is represented by the corresponding CS2 product name, year, month, day, hour, regional flag (1:GS region,2:NS region,3:BS region), the start longitude and latitude of the marginal ice zone on each track, the end longitude and latitude of the marginal ice zone.</p> <p>Second,the gridded dataset is based on the along-track MIZ retrieval results, and it records the presence of the MIZ on the monthly basis. The latitude-longitude grid is adopted, with 2 degrees of longitude spacing and 1 degree of latitude spacing. Each file contains the following variables: the time, the MIZ flag, and the location flag. In this new version, we provide files in both NetCDF and GeoTIFF formats for users to download.</p>
Geographical gradients of genetic diversity and differentiation among the southernmost marginal populations of Abies sachalinensis revealed by EST-SSR polymorphism
Research Highlights: We detected the longitudinal gradients of genetic diversity parameters, such as the number of alleles, effective number of alleles, heterozygosity, and inbreeding coefficient, and found that these might be attributable to climatic conditions, such as temperature and snow depth. Background and Objectives: Genetic diversity among local populations of a plant species at its distributional margin has long been of interest in ecological genetics. Populations at the distribution center grow well in favorable conditions, but those at the range margins are exposed to unfavorable environments, and the environmental conditions at establishment sites might reflect the genetic diversity of local populations. This is known as the central-marginal hypothesis in which marginal populations show lower genetic variation and higher differentiation than do central populations. In addition, genetic variation in a local population is influenced by phylogenetic constraints and the population history of selection under environmental constraints. In this study, we investigated this hypothesis in relation to Abies sachalinensis, a major conifer species in Hokkaido. Materials and methods: A total of 1,189 trees from 25 natural populations were analyzed using 19 EST-SSR loci. Results: The eastern populations; namely, those in the species distribution center, showed greater genetic diversity than did the western peripheral populations. Another important finding is that the southwestern marginal populations were highly differentiated from the other populations. Conclusions: These differences might be due to genetic drift in the small and isolated populations at the range margin. Therefore, our results indicated that the central-marginal hypothesis held true for the southernmost A. sachalinensis populations in Hokkaido.
well-developed transverse bridge at anterior end of scutellar groove; 664, Pantoteles tenvirostris, showing clefted anterior margin of scutellar groove; 665, Optatus palmaris; 666, Strongylotes squamans, showing anterior margin of prescutum with large lobes and reduced median longitudinal crest on the scutellar groove; 667, Nertinus suturalis, indicating absence of transverse bridge at anterior end of scutellar groove; 668, Peridinetus irroratus, showing well-developed median longitudinal crest on the scutellar groove and metascutum with weakly-defined posterior margin nearly extending to posterior of metanotum; 669, Leptoschoinus fucatus, showing metascutum with well-defined posterior margin not extending to posterior of metanotum, well-developed transverse bridge at anterior end of scutellar groove, and welldeveloped median longitudinal crest on the scutellar groove; 670, Barilepton filiforme, indicating absence of transverse bridge at anterior end of scutellar groove; 671, Garnia sp., showing concave anterior margin of scutellar groove; 672, Eisonyx crassipes. in Morphology of Baridinae and related groups (Coleoptera, Curculionidae)
well-developed transverse bridge at anterior end of scutellar groove; 664, Pantoteles tenvirostris, showing clefted anterior margin of scutellar groove; 665, Optatus palmaris; 666, Strongylotes squamans, showing anterior margin of prescutum with large lobes and reduced median longitudinal crest on the scutellar groove; 667, Nertinus suturalis, indicating absence of transverse bridge at anterior end of scutellar groove; 668, Peridinetus irroratus, showing well-developed median longitudinal crest on the scutellar groove and metascutum with weakly-defined posterior margin nearly extending to posterior of metanotum; 669, Leptoschoinus fucatus, showing metascutum with well-defined posterior margin not extending to posterior of metanotum, well-developed transverse bridge at anterior end of scutellar groove, and welldeveloped median longitudinal crest on the scutellar groove; 670, Barilepton filiforme, indicating absence of transverse bridge at anterior end of scutellar groove; 671, Garnia sp., showing concave anterior margin of scutellar groove; 672, Eisonyx crassipes.
Male palpal femur clearly curved (A2); retrolateral margin of cymbium with triangular extension (A1) in An of Zelotibia (Araneae, Gnaphosidae), a spider genus with a species swarm in the Albertine Rift
Male palpal femur clearly curved (A2); retrolateral margin of cymbium with triangular extension (A1)
Figure 19. Myopiarolis novaecaledoniae. Holotype. A dorsal view B sternites and ventral pleonites C pereopod 6 carpus inferior margin setae D maxilliped E pleopod 2 endopod, detail F pereopod 2 propodus and dactylus G pleopod 4 H pleopod 5 in New genera and species of the marine isopod family Serolidae (Crustacea, Sphaeromatidea) from the southwestern Pacific
Figure 19. Myopiarolis novaecaledoniae. Holotype. A dorsal view B sternites and ventral pleonites C pereopod 6 carpus inferior margin setae D maxilliped E pleopod 2 endopod, detail F pereopod 2 propodus and dactylus G pleopod 4 H pleopod 5.
Posterior margin of epigyne convex and provided with central band covered with short setae up to anterior margin (7a in A revision of the African wolf spider genus Amblyothele Simon
Posterior margin of epigyne convex and provided with central band covered with short setae up to anterior margin (7a
Tectono-stratigraphic and thermal evolution of the western Betic flysch: implications for the geodynamics of South Iberian margin and Alboran Domain
<p>Table and Figure from article "<strong>Tectono-stratigraphic and thermal evolution of the western Betic flysch: implications for the geodynamics of South Iberian margin and Alboran Domain" accepted to AGU, Tectonics</strong></p>
Figure 4 in Tanaidacea (Crustacea: Peracarida) of the northeast Atlantic: Chauliopleona Dojiri and Sieg, 1997 and Saurotipleona n. gen. from the 'Atlantic Margin'
Figure 4. Chauliopleona amdrupii. Non-ovigerous female, BIOICE Stn 3282: (A–F) pereopods 1–6 respectively. Scale bar 0.25 mm.
Figure 3 in Tanaidacea (Crustacea: Peracarida) of the northeast Atlantic: Chauliopleona Dojiri and Sieg, 1997 and Saurotipleona n. gen. from the 'Atlantic Margin'
Figure 3. Chauliopleona amdrupii. Non-ovigerous female, BIOICE Stn 3282: (A) labrum; (B–C) left mandible and molar; (D) right mandible; (E) maxillule; (F) maxilla; (G) maxilliped (one palp omitted); (H) cheliped. Scale bars: (i) 0.25 mm for A–G; (ii) 0.25 mm for H.
Figure 1 in Tanaidacea (Crustacea: Peracarida) of the northeast Atlantic: Chauliopleona Dojiri and Sieg, 1997 and Saurotipleona n. gen. from the 'Atlantic Margin'
Figure 1. Chauliopleona. Sketch drawings: (A) measurement of cheliped carpal shield aspect ratio l/b; C. armata, non-ovigerous female, co-type, Ingolf Stn 22; (B) habitus; (C) pleonite-5 spur; (D) cheliped, distal; (E) cheliped, fixed finger; (F) pereopod-1, distal; (G) uropod. C. hastata, non-ovigerous female co-type, Ingolf Stn 125: (H) habitus; (J) pleonite-5 spur, pleotelson, and uropod; (K) cheliped, distal; (L) pereopod-1, distal; C. hastata one of two cotypes, Ingolf Stn 102: (M) pleonite-5 spur. Not to scale.
Fig. 8 in New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand's continental margin
Fig. 8. Halichoanolaimus funestus sp. nov. A. Entire paratype ♀ (NIWA 139249). B. Entire holotype ♂ (NIWA 139248). Scale bar = 250 µm.
Fig. 6 in New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand's continental margin
Fig. 6. Halichoanolaimus ossilagulus sp. nov. Light micrographs. A, B. Cephalic region of paratype ♀ (NIWA 139247), showing structure of buccal cavity. C. Cloacal region of holotype ♂ (NIWA 139246), showing cuticle ornamentation and pore complexes (arrows). D. Junction of pharynx and intestine of paratype ♀ showing position of secretory-excretory gland (seg) and pseudoceolomocyte (pc). Scale bar: A–B = 15 µm; C = 11 µm; D = 17 µm.
Fig. 5 in New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand's continental margin
Fig. 5. Halichoanolaimus ossilagulus sp. nov. A. Entire holotype ♂ (NIWA 139246). B. Entire paratype ♀ (NIWA 139247). Scale bar = 150 µm.
Fig. 7 in New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand's continental margin
Fig. 7. Halichoanolaimus funestus sp. nov. A. Anterior body region of paratype ♀ (NIWA 139249). B. Holotype ♂ (NIWA 139248), cephalic region. C. Paratype ♀, cephalic region. D. Holotype ♂, posterior pharyngeal region and anterior intestinal region showing location of pseudocoelomocytes. E. Holotype ♂, spicular apparatus. F. Paratype ♀, posterior body region. G. Holotype ♂, posterior body region. Scale bar: A = 112 µm; B–C, E = 50 µm; D = 105 µm; F = 115 µm; G = 75 µm.
Fig. 3. Halichoanolaimus ovalis Ditlevsen, 1921. Light micrographs. A in New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand's continental margin
Fig. 3. Halichoanolaimus ovalis Ditlevsen, 1921. Light micrographs. A. Female cuticle showing lateral differentiation and pore complexes (arrow). B. Vulva, showing vaginal glands. C. Copulatory apparatus. Scale bar: A, C = 5 µm; B = 15 µm.
Fig. 1. Halichoanolaimus ovalis Ditlevsen, 1921 A. Male anterior body region. B in New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand's continental margin
Fig. 1. Halichoanolaimus ovalis Ditlevsen, 1921 A. Male anterior body region. B. Posterior male pharyngeal region and anterior intestinal region showing location of pseudocoelomocytes. C. Female cephalic region. D. Male cephalic region. E. Male posterior body region. F. Female posterior body region. Scale bar: A = 50 µm; B = 37 µm; C, E = 27 µm; D = 25 µm; F = 35 µm.
Fig. 10 in New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand's continental margin
Fig. 10. Halichoanolaimus pumilus sp. nov. Holotype ♂, NIWA 139250. A. Anterior body region. B. Posterior body region. C. Entire ♂. Scale bar: A = 25 µm; B = 42 µm; C = 60 µm.
Fig. 4 in New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand's continental margin
Fig. 4. Halichoanolaimus ossilagulus sp. nov. A. Holotype ♂ (NIWA 139246), anterior body region. B. Paratype ♀ (NIWA 139247), cephalic region. C. Paratype ♂ (NIWA 139247), cephalic region. D. Paratype ♂, posterior body region. E. Paratype ♀, posterior body region. F. Holotype ♂, cephalic region. G. Holotype ♂, posterior body region. Scale bar: A = 50 µm; B–C, E–F = 35 µm; D = 30 µm; G = 32 µm.
The Marginal Latin (LaM) readings of 2 Samuel - The collation file
<p>The collected cases of Marginal Latin (LaM) readings in 2 Samuel. Made at the time of sending the draft of the article to a publisher for an evaluation.</p>
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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