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240 results for “Autumn”
Traveling in Autumn Mountains, 17th-18th C CE
Traveling in Autumn Mountains, 17th-18th C CE, now in the collection of the Minneapolis Institute of Art. From the jade's description on [artsmia.org](www.artsmia.org): *'In this mountain scene, an official riding a donkey is followed by his attendant who carries an umbrella; they cross a rustic bridge over a waterfall. Above them a similar group in smaller scale, as if in the far distance, crosses another bridge. This type of jade mountain had its beginnings in the late Ming period. The setting, with its figures, trees, bridges and animals, represents a translation of the orthodox landscape painting tradition into jade sculpture. Numerous depictions similar to this one of scholars traveling in or contemplating mountain scenery can be found in paintings of the period. The theme of humankind's harmony with nature was favored by the Taoists and the literati.'* More information [here](https://collections.artsmia.org/art/4326/traveling-in-autumn-mountains-china) Source: Objaverse 1.0 / Sketchfab
Data from: Signatures of autumn deluges revealed during spring drought in a semi-arid grassland
<p>Increases in extremely large precipitation events (deluges) and shifts in seasonal patterns of water availability with climate change will both have important consequences for ecosystem function, particularly in water-limited regions. While previous work in the semi-arid shortgrass steppe of northeastern Colorado has demonstrated this ecosystem's strong sensitivity to growing season deluges, our understanding of ecosystem responses to deluges during the dormant season is limited. Here, we imposed experimental 100 mm deluges (~ 30% of mean annual precipitation) in either September or October in a native C<sub>4</sub>-dominated shortgrass steppe ecosystem to evaluate the impact of this post-growing season shift in water availability during the autumn and the following growing season. Soil moisture for both deluge treatments remained elevated compared with ambient levels through April as spring precipitation was atypically low. Despite overall low levels of productivity with spring drought, these deluges from the previous autumn increased aboveground net primary production (ANPP), primarily due to increases with C<sub>4</sub> grasses. C<sub>3</sub> ANPP was also enhanced, largely due to an increase in the annual C<sub>3 </sub>grass,<em> Vulpia octoflora</em>, in the October deluge treatment. While spring precipitation has historically been the primary determinant of ecosystem function in this ecosystem, this combination of two climate extremes – an extremely wet autumn followed by a naturally occurring spring drought – revealed the potential for meaningful carryover effects from autumn precipitation. With climate change increasing the likelihood of extremes during all seasons, experiments that create novel climatic conditions can provide new insight into the dynamics of ecosystem functioning in the future.</p>
Late to bed, late to rise—Warmer autumn temperatures delay spring phenology by delaying dormancy
<p>Spring phenology of temperate forest trees has advanced substantially over the last decades due to climate warming, but this advancement is slowing down despite continuous temperature rise. The decline in spring advancement is often attributed to winter warming, which could reduce chilling and thus delay dormancy release. However, mechanistic evidence of a phenological response to warmer winter temperatures is missing. We aimed to understand the contrasting effects of warming on plants leaf phenology and to disentangle temperature effects during different seasons.</p> <p>With a series of monthly experimental warming by ca. 2.4 °C from late summer until spring, we quantified phenological responses of forest tree to warming for each month separately, using seedlings of four common European tree species. To reveal the underlying mechanism, we tracked the development of dormancy depth under ambient conditions as well as directly after each experimental warming. In addition, we quantified the temperature response of leaf senescence.</p> <p>As expected, warmer spring temperatures led to earlier leaf-out. The advancing effect of warming started already in January and increased towards the time of flushing, reaching 2.5 days/°C. Most interestingly, however, warming in October had the opposite effect and delayed spring phenology by 2.4 days/°C on average; despite six months between the warming and the flushing. The switch between the delaying and advancing effect occurred already in December. We conclude that not warmer winters but rather the shortening of winter, i.e. warming in autumn, is a major reason for the decline in spring phenology.</p>
Stimulation, reduction and compensation growth, and variable phenological responses to spring and/or summer-autumn warming in Corylus taxa and Cornus sanguinea L.
<p>Two datasets containing data from three Corylus taxa (Corylus avellana, Corylus maxima and intermediate forms) and from Cornus sanguinea. Plants, in a common garden setting, were subjected to a periodic warming experiment in a greenhouse environment in 2018. </p>
Fig. 6 in Autumn Migration Of Birds Over Polonyna Borzhava (Ukrainian Carpathians)
Fig. 6. Passage phenology of birds migrating over Polonyna Borzhava in Autumn 2018.
Fig. 1 in Autumn Migration Of Birds Over Polonyna Borzhava (Ukrainian Carpathians)
Fig. 1. Observation sites used to monitor migration of birds across Polonyna Borzhava in 2018.
Fig. 2 in Autumn Migration Of Birds Over Polonyna Borzhava (Ukrainian Carpathians)
Fig. 2. Overall dynamics of bird autumn passage across Polonyna Borzhava in autumn 2018.
Secrets of the night: roost sites and sleep disturbance factors during the autumn migration of first-year white stork Ciconia ciconia
<p>The migration phase of birds is divided into two main states: stopovers and actual migratory flights. For soaring birds, such as storks, nighttime is especially important to conserve energy and to start the next day in favourable weather conditions. Although there is a large number of recent studies on white stork Ciconia ciconia, for example using advanced technologies such as GPS technology, the nocturnal behaviour of the species is still an enigma. Thus, we GSM-GPS-tagged 90 immature storks and checked their nocturnal behaviour, especially roost disturbance, during their first autumn migration from breeding grounds in southern Poland to wintering places in Africa. Storks roosted on three types of site: on buildings, on the ground, or in trees. Birds that roosted on the ground had a higher probability of nighttime disturbance than those that used trees or buildings. The probability of disturbance at night was also related to longitude and latitude; the most easterly birds and those at the start of the migration route were disturbed more often during the night. Furthermore, and interestingly, environmental conditions at roosts were also significantly related to the probability of disturbance; birds roosting at tree sites with higher NDVI (greener) and with higher levels of artificial light both had a lower probability of disturbance. A possible explanation of this could be related to lower potential predatory pressure at night. We found that after long flights birds were disturbed more often at night, and that disturbed birds migrated further the next day. For a better understanding of the nocturnal behaviour of storks, as well as of other migratory birds, the use of modern technological tools with greater precision is recommended.</p>
Fig. 1 in Change Of Timing Of Autumn Migration In Acrocephalus And Locustella Genus
Fig. 1. Cumulative curve of juvenile Sedge Warbler in 1999 and the 50% and 90% percentiles
Fig. 1 in Wing-Length, Body Mass And Fat Reserves Of Robins (Erithacus Rubecula) During Autumn Migration In Hungary
Fig. 1. Location of ringing sites
Fig. 1 in Circadian activity patterns of the Red fox (Vulpes vulpes) and the Stone marten (Martes foina) in agricultural landscape of Northwestern Bulgaria during autumn-winter period
Fig. 1. Location of the protected area "Zlatiyata" in Northwestern Bulgaria.
Fig. 1 in Notes on autumn-winter stomach contents of the Stone Marten (Martes foina) in the Balkan Mountains, Central Bulgaria
Fig. 1. Location of the study area.
Simulated coordinated impacts of the previous autumn NAO and winter El Niño on the winter aerosol concentrations over eastern China
<p>The simulated aerosol concentrations and the model input meteorology fields (SLP and wind at 850 hPa) , as well as the data description files are listed.</p>
Fig. 4 in Importance Of Utliukskiy Liman For The Protection Of Waterbirds In The Azov-Black Sea Region During Autumn Migration
Fig. 4. The average number of different orders of waterbirds at Utliukskiy Liman in September.
Figure 1 in Vigilance behavior of common crane Grus grus in flocks during spring, summer, and autumn
Figure 1. Vigilance proportion of each social unit.
Figure 3 in Vigilance behavior of common crane Grus grus in flocks during spring, summer, and autumn
Figure 3. Vigilance proportion of juveniles in each period.
Figure 2 in Vigilance behavior of common crane Grus grus in flocks during spring, summer, and autumn
Figure 2. Vigilance proportion of nonparents in each flock size.
A cold high-pressure system over North China hinders the southward migration of Mythimna separata in autumn
<p></p> <p class="MsoNormal"><strong><span>Background:</span></strong><span> </span><a name="OLE_LINK27"></a><span>In warm regions or seasons of the year, the planetary boundary layer is occupied by a </span><a name="OLE_LINK5"></a><span><span>huge variety and quantity</span></span><span><span> of insects, but the southward migration of insects </span></span><span><span>(in East Asia) in autumn is still poorly understood</span></span><span><span>. </span></span></p> <p class="MsoNormal"><span><strong><span>Methods:</span></strong></span><span><span> </span></span><span><span>We collated daily catches of </span></span><span><span>the oriental armyworm (</span></span><span><em><span>Mythimna separata</span></em></span><span><span>)</span></span><span><span> moth from </span></span><span><span>20</span></span><span><span> </span></span><span><span>search</span></span><span><span>light traps </span></span><span><span>from</span></span><span><span> 2014</span></span><span><span> to </span></span><span><span>2017</span></span><span><span> in China</span></span><span><span>. In order to explore the </span></span><span><span>autumn migratory </span></span><span><span>connectivity of <em>M. separata</em> in East China, we analyzed the autumn climate and simulated the autumn migration process of </span></span><span><span>moth</span></span><span><span>s.</span></span></p> <p class="MsoNormal"><span><strong><span>Results: </span></strong></span><span><span>The results confirmed that northward moth migration in spring and summer under the East Asian monsoon system can bring rapid population growth. </span></span><span><span>However, slow southerly wind (blowing towards the north) prevailed over the major summer breeding area in North China (33°- 40°N) due to a cold high-pressure system located there, and this severely disrupts </span></span><span><span>the autumn 'return' migration of this pest. Less than 8% of moths from the summer breeding area successfully migrated back to their winter-breeding region, resulting in a sharp decline of the population abundance in autumn. As northerly winds (blowing towards the south) predominate at the eastern periphery of </span></span><span><span>a high-pressure system</span></span><span><span>, the westward movement of the high-pressure system </span></span><span><span>leads to </span></span><span><span>more northerlies over North China, increasing the numbers of moths migrating southward successfully. Therefore, an outbreak year of <em>M</em></span></span><span><em><span>.</span></em></span><span><em><span> separata</span></em></span><span><span> larvae was associated with a more westward position of the high-pressure system during the previous autumn. </span></span></p> <p class="MsoNormal"><span><strong><span>Conclusion:</span></strong></span><span><span> </span></span><span><span>These results indicate that the southward migration in autumn is crucial for sustaining pest populations of <em>M. separata</em>, and the position of the cold high-pressure system in September is a key environmental driver of the population size in the next year. </span></span><span>This study indicates that the autumn migration of insects in East China is more complex than previously recognized, and that the meteorological conditions in autumn</span><span> are an important driver of migratory insects' seasonal and interannual population dynamics.</span></p>
Potential Impact of Winter–Spring North Atlantic Tripole SSTAs on the Following Autumn–Winter El Niño–Southern Oscillation: Bridging Role of the Tibetan Plateau
<p>This is the key model data of "Potential Impact of Winter–Spring North Atlantic Tripole SSTAs on the Following Autumn–Winter El Niño–Southern Oscillation: Bridging Role of the Tibetan Plateau". The data includes the last 25 years data of the CTRL experiment, and 25 years data of the CTRL_NTP experiment, the NA_ST experiment, and the NA_ST_NTP experiment, respectively. "2D" is two-dimensional variables , "3D" is three-dimensional variables, and "pottmp" is ocean potential temperature.</p>
Fig. 2 in Fuel Load And Flight Range Estimation Of Migrating Passerines In The Western Part Of The Carpathian Basin During The Autumn Migration
Fig. 2. Potential flight ranges (+ SE) of passerine species stopping over in Tömörd during
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