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66 results for “Paleoclimate”
FIGURE 4. Representative Lauraceae from the Citronelle Formation. 1 in New plant fossil records and paleoclimate analyses of the late Pliocene Citronelle Formation flora, U.S. Gulf Coast
FIGURE 4. Representative Lauraceae from the Citronelle Formation. 1. Lindera sp. leaf (UF 19210–062072), scale bar equals 1 cm. 2. Extant Lindera leaf from USAM herbarium for comparison with Figure 4.1, scale bar equals 1 cm. 3. Persea sp. leaf (UF 19210–062073), scale bar equals 1 cm. 4. Sassafras albidum leaf (UF 19210–062074), scale bar equals 1 cm. 5. Close-up of Figure 4.1 Lindera leaf showing high order venation, scale bar equals 2.5 mm. 6. Close-up of Figure 4.3 Persea leaf showing high order venation, scale bar equals 2.5 mm.
FIGURE 8 in New plant fossil records and paleoclimate analyses of the late Pliocene Citronelle Formation flora, U.S. Gulf Coast
FIGURE 8. Representative Sapindaceae (continued), Smilicaceae, and Ulmaceae from the Citronelle Formation. 1. Acer cf. saccharinum partial leaf (UF 19315–062088), scale bar equals 1 cm. 2. Smilax sp. partial leaf (UF 19413– 062089), scale bar equals 5 mm. 3. Close-up of Figure 8.2 Smilax leaf showing higher order venation details, scale bar equals 2.5 mm. 4. Ulmus sp. leaf (UF 19413–062090), scale bar equals 5 mm. 5. Close-up of Figure 8.4 Ulmus leaf showing margin details and multiple orders of teeth, scale bar equals 2.5 mm.
FIGURE 7 in New plant fossil records and paleoclimate analyses of the late Pliocene Citronelle Formation flora, U.S. Gulf Coast
FIGURE 7. Representatives Rosaceae (continued), Salicaceae, Rutaceae, and Sapindaceae from the Citronelle Formation. 1. Extant Crataegus floridana from USAM herbarium for comparison with Figure 6. 7, scale bar equals 5 mm. 2. Rubus sp. leaf (UF 19413–062083), scale bar equals 5 mm. 3. Ptelea cf. trifoliata leaf (UF 19210– 062084), scale bar equals 5 mm. 4. Salix sp. leaf (UF 19210–062085), scale bar equals 1 cm. 5. Close-up of Figure 7.4 Salix leaf margin showing salicoid teeth, scale bar equals 2.5 mm. 6. Acer cf. rubrum basal portion of leaf (UF 19210–062087), scale bar equals 1 cm. 7. Acer cf. rubrum leaf (UF 19210–062086), scale bar equals 1 cm. 8. Extant Acer rubrum USAM herbarium for comparison with Figure 7.6–7, scale bar equals 1 cm.
FIGURE 3 in New plant fossil records and paleoclimate analyses of the late Pliocene Citronelle Formation flora, U.S. Gulf Coast
FIGURE 3. Representative Juglandaceae from the Citronelle Formation (continued). 1. Carya cf. aquatica leaflet (UF 19315–062069), scale bar equals 5 mm. 2. Epifluorescence micrograph of leaf from Figure 3.1, note peltate hairs, scale bar equals 125 µm. 3. Carya cf. tomentosa leaflet (UF 19315–062070), scale bar equals 2 cm. 4. Carya species #3 partial leaflet (UF 19210–062071), scale bar equals 5 mm. 5. Carya cf. aquatica leaf margin of Figure 3.1, scale bar equals 2.5 mm, 6. Carya cf. tomentosa leaf margin of Figure 3.2, scale bar equals 5 mm. 7. Carya species #3 of Figure 3.4 leaf margin, scale bar equals 2.5 mm.
FIGURE 2. Representative Aquifoliaceae through Juglandaceae from the Citronelle Formation. 1 in New plant fossil records and paleoclimate analyses of the late Pliocene Citronelle Formation flora, U.S. Gulf Coast
FIGURE 2. Representative Aquifoliaceae through Juglandaceae from the Citronelle Formation. 1. Ilex sp. leaf (UF 19210–062063), scale bar equals 5 mm. 2. Clethra cf. alnifolia (UF 19210–062064) partial leaf, arrow indicates mucronate tooth apex, scale bar equals 5 mm. 3. Close-up of Figure 2.2 Clethra leaf, note mixed-percurrent tertiaries, scale bar equals 2.5 mm. 4. Extant Clethra alnifolia leaf from USAM herbarium for comparison with Figure 2.2, scale bar equals 5 mm. 5. Gaylussacia sp. leaf (UF 19315–062065), scale bar equals 5 mm. 6. Extant Gaylussacia sp. from USAM herbarium for comparison with Figure 2.5, scale bar equals 5 mm. 7. Vaccinium sp. leaf (UF 19315–062066), scale bar equals 5 mm. 8. Close-up of Vaccinium leaf margin from Figure 2.7 showing teeth, scale bar equals 2.5 mm. 9. Carya fruit (UF 19315 – 062068), scale bar equals 5 mm. 10. Carya sp. catkin with in situ pollen (UF 19315 – 062067), scale bar equals 5 mm. 11. Carya sp. pollen tetrad from specimen in Figure 2.10, scale bar equals 10 µm.
FIGURE 6 in New plant fossil records and paleoclimate analyses of the late Pliocene Citronelle Formation flora, U.S. Gulf Coast
FIGURE 6. Representative Oleaceae (continued), Platanaceae, and Roseaceae from the Citronelle Formation. 1. Fraxinus leaflet (UF 19210–062078), scale bar equals 1 cm. 2. Close-up of Figure 6.1 Fraxinus leaflet showing higher order venation, scale bar equals 5 mm. 3. Platanus occidentalis leaf (UF 19210–062079), scale bar equals 1 cm. 4. Platanus occidentalis fruit (UF 19211–062080), showing persistent style at arrow, scale bar equals 1 cm. 5. Crataegus leaf species 1 (UF19315–062081) similar to C. spatulatha, scale bar equals 5 mm. 6. Close-up of Figure 6.5 Crataegus leaf showing higher order venation, scale bar equals 2.5 mm. 7. Crataegus species #2 leaf (UF 19210–062082), wedge-shaped lamina similar to C. floridana, compare with Figure 7.1, scale bar equals 5 mm. 8. Close-up of Figure 6.7 Crataegus leaf showing higher order venation, scale bar equals 2.5 mm.
FIG. 7. — Dendrograms resulting from Q in Micropaleontological parameters as proxies of late Miocene surface water properties and paleoclimate in Gavdos Island, eastern Mediterranean
FIG. 7. — Dendrograms resulting from Q-mode cluster analysis and the assemblages identified in each section.
FIG. 5 in Micropaleontological parameters as proxies of late Miocene surface water properties and paleoclimate in Gavdos Island, eastern Mediterranean
FIG. 5. — Relative frequency curves of the planktonic foraminifera identified in Bo Section. Refer to Figure 2 for the explanation of the lithostratigraphical column.
FIG. 3 in Micropaleontological parameters as proxies of late Miocene surface water properties and paleoclimate in Gavdos Island, eastern Mediterranean
FIG. 3. — Relative frequency curves of the planktonic foraminifera identified in Ag. Giannis Section. Refer to Figure 2 for the explanation of the lithostratigraphical column.
FIG. 2 in Micropaleontological parameters as proxies of late Miocene surface water properties and paleoclimate in Gavdos Island, eastern Mediterranean
FIG. 2. — Lithostratigraphical columns of the Ag. Giannis, Potamos and Bo sections, Gavdos Island, Greece.
FIG. 4 in Micropaleontological parameters as proxies of late Miocene surface water properties and paleoclimate in Gavdos Island, eastern Mediterranean
FIG. 4. — Relative frequency curves of the planktonic foraminifera identified in Potamos Section. Refer to Figure 2 for the explanation of the lithostratigraphical column.
Spatiotemporally-completed reconstruction of precipitation during the Holocene over the Northern Hemisphere using paleoclimate data assimilation
<div>(1) <strong>Data Content</strong>: Spatiotemporally complete reconstruction of annual precipitation during the Holocene (i.e., 12-0 ka BP) over the Northern Hemisphere. Based on the sources of the prior ensembles, the dataset comprises three distinct reconstructions, namely PDA (TraCE), PDA (HadCM) and PDA (Mixed), each of which contains: 1) 200 precipitation reconstructions derived from the Monte Carlo realizations for each experimental group, and 2) the corresponding mean and ±1 standard deviation calculated from each set of 200 reconstructions. <strong>(2) Data Production Method</strong>: We reconstructed annual precipitation fields for the Northern Hemisphere during the Holocene using a paleoclimate data assimilation system. This involved assimilating 2,421 Holocene precipitation records from the LegacyClimate 1.0 dataset. In our experiment, we utilized the time-averaged Ensemble Optimal Interpolation (EnIO) data assimilation algorithm. The static prior ensemble of states was constructed from either the TraCE 21 ka BP or the HadCM 23 ka transient climate simulations, or a combination of both in a mixed approach. The data have a temporal resolution of 100 years and a spatial resolution of 3.75°. </div> <div> </div> <div>All prerequisite materials for conducting the PDA-based reconstruction experiments - including prior model simulations, Holocene precipitation records, and Matlab codes- are publicly available on Zenodo repository (<span lang="EN-US">https://doi.org/10.5281/zenodo.17354887</span>). Please contact the author Miao Fang (E-mail: mfang@lzb.ac.cn) for more information about the details of the reconstructions.</div>
Pronghorn (Antilocapra americana) enamel phosphate δ18O values reflect climate seasonality: implications for paleoclimate reconstruction
Open the record for dataset details and reuse information.
Miocene paleotopography and paleoclimate based on paired stable isotope compositions in Namling Basin, south Tibet
<p>This supporting information contains four datasets asTable 1 in the main text and Table S1, Table S2, and Table S3 in the supplementary file. Table S1 is the zircon U-Pb dating of two tuff samples. Both samples were collected in 2016 at the bottom and at the top of the measured section to constrain the precisely formed timing of the samples. U-Pb dating was processed by laser ablation inductively coupled plasma-mass spectrometer (LA-ICP-MS) and calculated by the GLITTER_V4.0.</p> <p>Table S2 is a summary Miocene δ<sup>2</sup>H data, δ<sup>18</sup>O data, and vegetation associations in the Miocene Tibetan Plateau basins from literature. These data were from our study in Namling Basin and previous work (Spicer et al., 2003; Currie et al., 2016; Khan et al., 2014); Lunpola Basin (Polissar et al., 2009; Sun et al., 2014), Hoh Xil Basin (Polissar et al., 2009; Sun et al., 2015; Li et al., 2015), and Qaidam basin (Zhuang et al., 2014; Miao et al., 2013) as well as the biotite δ2H data from Himalaya (Gebélin et al., 2013). Paleometeoric water δD<sub>w</sub> values are calculated by applying the average established and local apparent fractionation factor of -111±14‰ in the Namling, Lunpola and Hoh Xil basins and -102‰ in the Qaidam Basin (Zhuang et al., 2014). b. Paleometoric water δ<sup>18</sup>O<sub>w</sub> values are calculated by the calcite-water equation (Kim and O'Neil, 1997) with carbonate forming temperatures of 14.6±3.6°C in the Namling Basin, Lunpola Basin and Hoh Xil Basin (Deng et al., 2012; Sun et al., 2015; Ingalls et al., 2017).</p> <p>Table S3 is a summary of the stable isotope of the surface water across the Tibetan Plateau. These data were from the previous literature (Quade et al., 2011; Hren et al., 2009; Bershaw et al., 2012).</p>
Locomotion and paleoclimate explain the re-evolution of quadrupedal body form in Brachymeles lizards
<p>Evolutionary reversals, including re-evolution of lost structures, are commonly found in phylogenetic studies. However, we lack an understanding of how these reversals happen mechanistically. A snake-like body form has evolved many times in vertebrates, and occasionally, a quadrupedal form has re-evolved, including in <i>Brachymeles</i> lizards. We use body form and locomotion data for species ranging from snake-like to quadrupedal to address how a quadrupedal form could re-evolve. We show that large, quadrupedal species are faster at burying and surface locomotion than snake-like species, indicating a lack of expected performance trade-off. Species with limbs use them while burying, suggesting that limbs are useful for burying in wet, packed substrates. Paleoclimatological data suggest that <i>Brachymeles</i> originally evolved a snake-like form under a drier climate likely with soil<strike> </strike>in which it was easier to dig. The quadrupedal clade evolved as the climate became humid, where limbs and large size facilitated fossorial locomotion in packed soils.</p>
Data-based evaluation of paleoclimate records from the terrestrial Indian region: opportunities and gaps
<p>We explored the accessibility to paleoclimate records from the terrestrial Indian region for a PAGES article. The table gives information on the location, archive, entity, proxy and repository/database where the record is hosted. </p>
FIGURE 1 in Paleoclimate and paleoecology of the Upper Oligocene Tehuacán Formation, Puebla State, Mexico, as determined from wood anatomical characters
FIGURE 1. Geographical location of the Tehuacán Fm. in the state of Puebla, Mexico.
APPENDIX 1 in Paleoclimate estimates for the Paleogene-Neogene in southern South America using fossil leaves as proxies
<p>APPENDIX 1.— Supplementary material including the fossil specimens from the studied sites and the morphological character scores for CLAMP analysis</p><table><thead><tr><th><b>Lower Río Turbio Fm</b></th><th><b>LMA</b></th><th><b>LAA</b></th><th><b>Source</b></th></tr></thead><tbody><tr><th><i>Acrodiclidium flavianum</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Allophylus graciliformis</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Anacardites pichileufensis</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Annona</i> sp.</th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Casearia</i> sp.</th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Cissus pichileufensis</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Cinnamomum neogaea</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Cupania grosse-serrata</i></th><td>*</td><td>-</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Cupania latifolioides</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Cupania patagonica</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Cupania santacrucensis</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Drimys patagonica</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Drimys</i> sp.</th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Eucalyptus</i> sp.</th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Escallonia</i> sp.</th><td>*</td><td><b>–</b></td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Myrcia</i> sp.</th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Myricaceae</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Myrica hunzikerii</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Nectandra prolifica</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Nothofagus subferruginea</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Nothofagus variabilis</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Nothofagus serrulata</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Nothofagus elongata</i></th><td>*</td><td><b>–</b></td><td>Hünicken 1967</td></tr><tr><th><i>Ocotea menendezi</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Ocotea</i> sp.</th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Persea</i> sp.</th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Psidium liociardensis</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Qualea patagonica</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Schinopsis patagonica</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Styrax</i> sp.</th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Styrax glandulifera</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Tetracera</i> cf. <i>patagonica</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Zyziphus chubutensis</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Malvaceae</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Urticaceae</i></th><td>*</td><td><b>–</b></td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th>cf. <i>Pouterlabatia clark</i></th><td>*</td><td>*</td><td>Hünicken 1967; Vento & Prámparo 2018</td></tr><tr><th><i>Paullinia</i> sp.</th><td>*</td><td><b>–</b></td><td>Panti 2018</td></tr><tr><th><i>Banisteriophyllum</i></th><td>*</td><td><b>–</b></td><td>Panti 2018</td></tr></tbody></table>
TABLE 4 in Paleoclimate estimates for the Paleogene-Neogene in southern South America using fossil leaves as proxies
<p>TABLE 4 — Estimated values for the climate variables in the lower Río Turbio Formation member from CLAMP analysis using the CLAMP3B SA and CLAMPSH90 data set.</p><table><thead><tr><th><b>CLAMP Climate parameters</b></th><th><b>Estimates</b></th><th><b>Error</b></th><th><b>Dataset</b></th><th><b>Estimates</b></th><th><b>Error</b></th><th><b>Data set</b></th></tr></thead><tbody><tr><th>Mean annual temperature (°C)</th><td>12.7</td><td>2.1</td><td>CLAMP3BSA</td><td>12.2</td><td>4.83</td><td>CLAMPSH90</td></tr><tr><th>Warm month mean temperature (°C)</th><td>23.2</td><td>3.3</td><td>CLAMP3BSA</td><td>21.5</td><td>7.5</td><td>CLAMPSH90</td></tr><tr><th>Cold month mean temperature (°C)</th><td>3.4</td><td>3.8</td><td>CLAMP3BSA</td><td>4</td><td>4.6</td><td>CLAMPSH90</td></tr><tr><th>Mean Growing Season Precipitation (mm)</th><td>1741</td><td>42.6</td><td>CLAMP3BSA</td><td>1394</td><td>68</td><td>CLAMPSH90</td></tr><tr><th>3-Wettest Months Precipitation (mm)</th><td>784</td><td>19.8</td><td>CLAMP3BSA</td><td>460</td><td>35</td><td>CLAMPSH90</td></tr><tr><th>3-Driest Months Precipitation (mm)</th><td>334</td><td>15.3</td><td>CLAMP3BSA</td><td>160</td><td>22.8</td><td>CLAMPSH90</td></tr><tr><th>Length Growing Season</th><td>7.7</td><td>1.2</td><td>CLAMP3BSA</td><td>7.4</td><td>0.8</td><td>CLAMPSH90</td></tr></tbody></table>
Data from: Contrasting nidification behaviors facilitate diversification and colonization of the Music frogs under a changing paleoclimate
<p>In order to cope with the complexity and variability of the terrestrial environment, amphibians have developed a wide range of reproductive and parental behaviors. Nest building occurs in some anuran species as parental care. Species of the Music frog genus <em>Nidirana</em> are known for their unique courtship behavior and mud nesting in several congeners. However, the evolution of these frogs and their nidification behavior has yet to be studied. With phylogenomic and phylogeographic analyses based on a wide sampling of the genus, we find that <em>Nidirana</em> originated from central-southwestern China and the nidification behavior initially evolved at ca 19.3 Ma but subsequently lost in several descendants. Further population genomic analyses suggest that the nidification species have an older diversification and colonization history, while <em>N. adenopleura</em> complex congeners that do not exhibit nidification behavior have experienced a recent rapid radiation. The presence and loss of the nidification behavior in the Music frogs may be associated with paleoclimatic factors such as temperature and precipitation. This study highlights the nidification behavior as a key evolutionary innovation that has contributed to the diversification of an amphibian group under past climate changes.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
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The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
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