Global Warming

全球变暖
  • 文章类型: Journal Article
    通过一种独特的,低振动圆形输送系统,植物传感器捕获光检测和测距(激光雷达)单元和热像仪在同一路线上移动,在一块块苹果树周围,七个MalusxdomesticaBorkh。\'Gala\'每个街区的苹果树。该季节进行了四次测量。此外,在收获时,在三天内记录了18个读数的昼夜课程。数据作为[i]原始数据(从右侧和左侧扫描的3块树木的3D点云和热图像)提供,[ii]用来自热相机的温度数据注释的冠层的经处理的3D点云,和[iii]手动分割水果的3D点云,代表空间分辨的水果表面温度(FST)。在每个测量日期和昼夜课程期间提供手动FST读数。水果数据捕获1236FST,提供温度分布作为3D点云和一个手动记录的参考FST每个水果。此外,测量每个水果的水果大小和颜色,尽管第一次约会,当水果太小而无法读取颜色时。天气数据是从位于果园的车站提供的。数据的使用可以是(a)在开发基于原始数据的3D点云处理的方法中,参考FST数据完成。此外,(b)经过预处理的水果表面温度点云可用于与全球变暖有关的生态生理研究,优化水果生产系统,和其他。因为传感器和树木是从相同的角度和距离测量的,天篷的时间序列分析是可能的。
    By means of a unique, low vibration circular conveyor system, plant sensors capturing light detection and ranging (LiDAR) unit and thermal camera were moved on the same route, around blocks of apple trees, with seven Malus x domestica Borkh. \'Gala\' apple trees in each block. Measurements took place four times during the season. Additionally at harvest, diurnal courses were recorded with 18 readings during three days. The data are provided as [i] raw data (3D point clouds of 3 blocks of trees scanned from right and left sides and thermal images), [ii] processed 3D point clouds of canopies annotated with temperature data from the thermal camera, and [iii] manually segmented 3D point clouds of fruit, representing the spatially-resolved fruit surface temperature (FST). Manual FST readings are provided on each measuring date and during diurnal courses. The fruit data are capturing 1236 FST, providing temperature distribution as 3D point cloud and one manually recorded reference FST per fruit. Additionally, fruit size and colour were measured for each fruit, despite for the first date, when fruit were too small for colour readings. Weather data are provided from a station located in the orchard. Usage of data could be (a) in developing methodology for 3D point cloud processing based on raw data, accomplished with reference FST data. Furthermore, (b) the pre-processed point clouds of fruit surface temperature can be reused in ecophysiological studies related to global warming, optimizing fruit production systems, and other. Because the sensors and trees were measured from the same angle and distance, time series analysis of the canopies would be possible.
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  • 文章类型: Journal Article
    尽管文献中有关于不同颜色的发光二极管(LED)对不同生物的影响的研究,关于这些影响如何随温度升高而变化的信息有限。在这项研究中,蓝色的影响,绿色,红色和白色LED灯对斑马鱼早期发育过程的影响(Daniorerio(Hamilton,1822))进行了全面调查。此外,模拟全球变暖,研究了温度升高一度如何影响这一过程。为此,斑马鱼胚胎,将其放置在4hpf(受精后小时)的孵化器中,其内部分为四个区域,在三个不同的温度(28、29和30°C)下保持120h。选择保持在黑暗环境中的组作为对照。对照组的温度也以与其他组相同的速率升高。结果表明,在暴露期结束时,温度和浅色导致身体畸形增加。幼虫脑中HSP70和8-OHdG生物标志物的组织病理学损伤和免疫阳性信号,增加氧自由基,凋亡细胞和脂质在整个身体的积累,运动活动的增加,心率和血流量下降,并检测到超过30种代谢物水平的显著变化。此外,已经确定许多代谢途径受到影响,尤其是谷胱甘肽,维生素B6和嘧啶代谢。此外,据观察,温度升高一度会使这种负面影响恶化。结论是,蓝光是最接近对照组的光,并且比其他颜色的光危害小。研究表明,蓝光产生的结果与对照组中的结果最相似。
    Although there are studies in the literature on the effects of different coloured light-emitting diodes (LEDs) on different organisms, there is limited information on how these effects change with temperature increase. In this study, the effects of blue, green, red and white LED lights on the early development process of zebrafish (Danio rerio (Hamilton, 1822)) were comprehensively investigated. In addition, to simulate global warming, it was examined how a one-degree temperature increase affects this process. For this purpose, zebrafish embryos, which were placed at 4 hpf (hours post fertilization) in an incubator whose interior was divided into four areas, were kept at three different temperatures (28, 29 and 30 °C) for 120 h. The group kept in a dark environment was chosen as the control. The temperature of the control group was also increased at the same rate as the other groups. The results showed that at the end of the exposure period, temperature and light colour caused an increase in body malformations. Histopathological damage and immunopositive signals of HSP 70 and 8-OHdG biomarkers in larval brains, increase in free oxygen radicals, apoptotic cells and lipid accumulation throughout the body, increase in locomotor activity, decrease in heart rate and blood flow, and significant changes in more than thirty metabolite levels were detected. In addition, it has been determined that many metabolic pathways are affected, especially glutathione, vitamin B6 and pyrimidine metabolism. Moreover, it has been observed that a one-degree temperature increase worsens this negative effect. It was concluded that blue light was the closest light to the control group and was less harmful than other light colours. The study revealed that blue light produced results that were most similar to those seen in the control group.
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  • 文章类型: Journal Article
    小型哺乳动物动物区系在生态系统动态中起着关键作用,并作为关键的生物多样性指标。然而,最近的研究引起了人们对气候变化引起的哺乳动物数量减少的担忧。因此,人们非常重视研究各种大型旗舰哺乳动物物种的保护。然而,小型哺乳动物,例如猪s(Mustelidae:Arctonyx)在亚洲气候变化的影响方面仍未得到充分研究。本研究全面分析了气候变化对两种大陆猪of的影响,利用集合物种分布模型。调查结果揭示了关于结果的问题,因为只有52%的IUCN范围被认为适合大猪Badger(Arctonyxcollaris),而只有17%适合北猪Badger(Arctonyxalbogularis)。值得注意的是,预测表明,在未来的气候情景下,这两种物种的合适区域可能会减少26%以上,在SSP585的高排放情景中,预计下降最严重。这些下降转化为明显的栖息地碎片化,特别是影响A.collaris,其贴片大幅收缩,与相对稳定的A.albogularis斑块形成对比。然而,尽管存在分歧,生态位重叠分析揭示了两个物种之间重叠的有趣增加,表明潜在的生态变化。该研究强调了将气候变化和栖息地碎片化考虑纳入保护战略的重要性,敦促重新评估自然保护联盟的A.albogularis地位。从这项研究中获得的见解对于通过确保适当的法律保障和维持可行的栖息地之间的生态走廊来改善保护措施至关重要。这对于整个亚洲大陆的猪s的保护至关重要。此外,强调积极努力的紧迫性,特别是在有适当栖息地的国家,可以帮助保护这些小型哺乳动物物种及其生态系统免受气候变化的有害影响。
    The small mammalian fauna plays pivotal roles in ecosystem dynamics and as crucial biodiversity indicators. However, recent research has raised concerns about the decline of mammalian species due to climate change. Consequently, significant attention is directed toward studying various big flagship mammalian species for conservation. However, small mammals such as the hog badgers (Mustelidae: Arctonyx) remain understudied regarding the impacts of climate change in Asia. The present study offers a comprehensive analysis of climate change effects on two mainland hog badger species, utilizing ensemble species distribution modeling. Findings reveal concerning outcomes, as only 52% of the IUCN extent is deemed suitable for the Great Hog Badger (Arctonyx collaris) and a mere 17% is ideal for the Northern Hog Badger (Arctonyx albogularis). Notably, projections suggest a potential reduction of over 26% in suitable areas for both species under future climate scenarios, with the most severe decline anticipated in the high-emission scenario of SSP585. These declines translate into evident habitat fragmentation, particularly impacting A. collaris, whose patches shrink substantially, contrasting with the relatively stable patches of A. albogularis. However, despite their differences, niche overlap analysis reveals an intriguing increase in overlap between the two species, indicating potential ecological shifts. The study underscores the importance of integrating climate change and habitat fragmentation considerations into conservation strategies, urging a reassessment of the IUCN status of A. albogularis. The insights gained from this research are crucial for improving protection measures by ensuring adequate legal safeguards and maintaining ecological corridors between viable habitat patches, which are essential for the conservation of hog badgers across mainland Asia. Furthermore, emphasizing the urgency of proactive efforts, particularly in countries with suitable habitats can help safeguard these small mammalian species and their ecosystems from the detrimental impacts of climate change.
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  • 文章类型: Journal Article
    全球变暖增加了极端气候事件发生的概率,复合极端事件对社会经济和环境的影响比个体极端事件更严重。利用耦合模型比对项目第六阶段(CMIP6),我们预测了未来两个时期在三个共享社会经济路径(SSP)下中国复合极端降水-高温事件的时空变化,并分析了暴露人群的变化并确定了影响因素。从结果来看,我们可以看到,CMIP6有效地再现了降水模式,但表现出偏见。复合事件的频率在SSP中上升,特别是在高辐射强迫下,具有较强的长期上升趋势。此外,经济发达地区,特别是中国东南沿海和华北平原,将成为频繁和激烈的复合极端事件的热点,而其他地区将减少暴露。最后,在长期的未来(2070-2100),人口暴露于复合事件的变化值得注意,强调人口因素对气候因素的影响越来越大。这凸显了人口与气候之间的相互作用在塑造暴露模式方面的重要性。
    Global warming has increased the probability of extreme climate events, with compound extreme events having more severe impacts on socioeconomics and the environment than individual extremes. Utilizing the Coupled Model Intercomparison Project Phase 6 (CMIP6), we predicted the spatiotemporal variations of compound extreme precipitation-high temperature events in China under three Shared Socioeconomic Pathways (SSPs) across two future periods, and analyzed the changes in exposed populations and identified influencing factors. From the result, we can see that, the CMIP6 effectively reproduces precipitation patterns but exhibits biases. The frequency of compound event rises across SSPs, especially under high radiative forcing, with a stronger long-term upward trend. Furthermore, the economically developed areas, notably China\'s southeastern coast and North China Plain, will be hotspots for frequent and intense compound extreme events, while other regions will see reduced exposure. Finally, in the long-term future (2070-2100), there is a noteworthy shift in population exposure to compound events, emphasizing the increasing influence of population factors over climate factors. This highlights the growing importance of interactions between population and climate in shaping exposure patterns.
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  • 文章类型: Journal Article
    氮(N)循环是一个复杂的生物地球化学过程,包括N的几种化学形式的转化。地球上生命对N的需求是显而易见的。然而,在整个不同的生物地球化学过程中,活性氮(Nr)物种的释放会导致大气污染。几种人类活动产生了许多物种,包括氨,一氧化二氮(N2O),一氧化氮,和硝酸盐。这种变化的主要原因是氮基肥料的使用,工业活动,和化石燃料的燃烧。N2O对地球上的环境可持续性构成重大威胁,其全球变暖潜力约为二氧化碳的298倍。它对环境有直接或间接的影响,农业生态系统,和地球上的人类生命。太阳能,水力发电,地热,必须使用风力涡轮机来减少Nr排放。此外,企业应安装催化转化器,以尽量减少氮气排放。为了减少Nr排放,需要像肥料平衡这样的战略干预措施。这项工作将为研究人员提供全面的指导,学者,和政策制定者。此外,它还将协助社会工作者向公众强调Nr问题,以提高全球社会的认识。
    The nitrogen (N) cycle is an intricate biogeochemical process that encompasses the conversion of several chemical forms of N. Given its role in food production, the need for N for life on Earth is obvious. However, the release of reactive nitrogen (Nr) species throughout different biogeochemical processes contributes to atmospheric pollution. Several human activities generate many species, including ammonia, nitrous oxide (N2O), nitric oxide, and nitrate. The primary reasons for this change are the use of nitrogen-based fertilizers, industrial activities, and the burning of fossil fuels. N2O poses a significant threat to environmental sustainability on our planet, with its global warming potential approximately 298 times greater than that of CO2. It has direct or indirect impacts on the environment, agroecosystem, and human life on earth. Solar, hydroelectric, geothermal, and wind turbines must be used to reduce Nr emissions. In addition, enterprises should install catalytic converters to minimize nitrogen gas emissions. To reduce Nr emissions, strategic interventions like fertilizer balancing are needed. This work will serve as a comprehensive guide for researchers, academics, and policymakers. Additionally, it will also assist social workers in emphasizing the Nr issue to the public in order to raise awareness within worldwide society.
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  • 文章类型: Journal Article
    迅速变暖的气候正在推动全球生物多样性的变化,鉴于昆虫在生态系统功能和服务中的作用过大,其对昆虫群落的影响至关重要。我们使用北美大黄蜂物种发生的长期数据集来确定群落温度指数(CTI)衡量群落中适应温暖和凉爽的物种的平衡,考虑到变暖的温度,已经增加了。在过去的30年中,CTI平均增加了0.99°C,与夏季最高气温变暖密切相关,这些地区表现出最大的增长,包括中高纬度地区以及低海拔和高海拔地区,相对不受其他密集的影响全球变化。CTI的变化是由大黄蜂群落中冷适应物种的减少和热适应物种的增加所驱动的。我们的结果表明,气温升高对昆虫的普遍影响和生态影响。
    A rapidly warming climate is driving changes in biodiversity worldwide, and its impact on insect communities is critical given their outsized role in ecosystem function and services. We use a long-term dataset of North American bumble bee species occurrences to determine whether the community temperature index (CTI), a measure of the balance of warm- and cool-adapted species in a community, has increased given warming temperatures. CTI has increased by an average of 0.99°C in strong association with warming maximum summer temperatures over the last 30 years with the areas exhibiting the largest increases including mid- to high latitudes as well as low and high elevations-areas relatively shielded from other intensive global changes. CTI shifts have been driven by the decline of cold-adapted species and increases in warm-adapted species within bumble bee communities. Our results show the pervasive impacts and ecological implications warming temperatures pose to insects.
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  • 文章类型: Journal Article
    在三个相关驱动因素的压力下,环境正在迅速变化:气候变化,污染,生物多样性的丧失。这些环境变化正在以多种方式影响消化系统健康和疾病。极端高温可导致肠和肝功能障碍。获得足够的高营养含量食物和清洁水受到威胁。极端天气与洪水和肠道感染有关,并通过基础设施损失影响护理的提供。空气,水,化学品和塑料造成的土壤污染正在成为各种肠道疾病的危险因素,包括嗜酸性粒细胞性食管炎,代谢功能障碍相关的脂肪肝疾病,消化道癌症,炎症性肠病,和功能性肠病。人口向城市和国家之间的迁移对提供消化系统护理构成了特殊挑战。全球消化卫生界对环境变化威胁的反应正在顺利进行,特别是关于了解和减少内窥镜检查对环境的影响。个人,和同伴社会,变得越来越投入,并在应对挑战中发挥重要作用。
    The environment is changing rapidly under pressure from 3 related drivers: climate change, pollution, and biodiversity loss. These environmental changes are affecting digestive health and disease in multiple ways. Heat extremes can cause intestinal and hepatic dysfunction. Access to adequate amounts of food of high nutritional content and to clean water is under threat. Extreme weather is associated with flooding and enteric infections and affects the delivery of care through infrastructure loss. Air, water, and soil pollution from chemicals and plastics are emerging as risk factors for a variety of intestinal diseases including eosinophilic esophagitis, metabolic dysfunction associated fatty liver disease, digestive tract cancers, inflammatory bowel disease, and functional bowel disease. Migration of populations to cities and between countries poses a special challenge to the delivery of digestive care. The response to the threat of environmental change is well underway in the global digestive health community, especially with regard to understanding and reducing the environmental impact of endoscopy. Individuals, and peer societies, are becoming more engaged, and have an important role to play in meeting the challenge.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    2016年至2024年间,澳大利亚大堡礁(GBR)上的大规模珊瑚白化是由高海面温度(SST)1驱动的。温度引起的漂白的可能性是GBR2未来威胁状态的关键决定因素,但该地区近期温度的长期背景尚不清楚。在这里,我们表明2024年,2017年和2020年1月至3月的珊瑚海极端高温(按平均SST异常下降的顺序)是400年来最温暖的,超过我们重建的1900年前最大值的第95个百分位不确定度极限。2016年、2004年和2022年事件是下一个最温暖的事件,超过90%的限制。气候模型分析证实,人类对气候系统的影响是近几十年来迅速变暖的原因。这个属性,加上最近的海洋温度极值,1900年后的变暖趋势和观察到的大量珊瑚白化,表明,人为气候变化对GBR生态系统的生存威胁现已实现。如果没有紧急干预,标志性的GBR有可能经历有利于近一年珊瑚漂白的温度3,对生物多样性和生态系统服务产生负面影响。当前轨迹的延续将进一步威胁到地球上最伟大的自然奇观之一的生态功能4和突出的普遍价值5。
    Mass coral bleaching on the Great Barrier Reef (GBR) in Australia between 2016 and 2024 was driven by high sea surface temperatures (SST)1. The likelihood of temperature-induced bleaching is a key determinant for the future threat status of the GBR2, but the long-term context of recent temperatures in the region is unclear. Here we show that the January-March Coral Sea heat extremes in 2024, 2017 and 2020 (in order of descending mean SST anomalies) were the warmest in 400 years, exceeding the 95th-percentile uncertainty limit of our reconstructed pre-1900 maximum. The 2016, 2004 and 2022 events were the next warmest, exceeding the 90th-percentile limit. Climate model analysis confirms that human influence on the climate system is responsible for the rapid warming in recent decades. This attribution, together with the recent ocean temperature extremes, post-1900 warming trend and observed mass coral bleaching, shows that the existential threat to the GBR ecosystem from anthropogenic climate change is now realized. Without urgent intervention, the iconic GBR is at risk of experiencing temperatures conducive to near-annual coral bleaching3, with negative consequences for biodiversity and ecosystems services. A continuation on the current trajectory would further threaten the ecological function4 and outstanding universal value5 of one of Earth\'s greatest natural wonders.
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  • 文章类型: Journal Article
    捕食者对变暖的反应可以通过表型可塑性发生,进化适应或两者的结合,改变它们对猎物群落的自上而下的影响。然而,我们缺乏气候变暖引起的捕食者进化变化如何影响天然食物网的证据.这里,我们询问,与经历自然热状态的附近物种相比,多代受变暖影响的野生鱼类对猎物群落的影响是否不同。我们用幼虫鲈鱼(Percafluviatilis)进行了普通的花园中观实验,源自加热或参考沿海环境,在实验温度的梯度下,以浮游动物群落为食。总的来说,在加热鱼的存在下,浮游动物的丰度更高,并且没有随着实验变暖而变化,而在存在未加热来源的鱼的情况下,随着实验温度的下降。浮游动物分类学和大小组成的响应表明,随着温度的升高,加热来源的幼虫消耗更多的大型类群。我们的发现表明,鱼类种群之间的差异,可能代表对其长期热环境的适应,会影响丰度,生物量,猎物群落的大小和物种组成。这表明,捕食者对持续气候变暖的快速微进化可能会通过食物网传播产生间接的跨代生态后果。
    Predator responses to warming can occur via phenotypic plasticity, evolutionary adaptation or a combination of both, changing their top-down effects on prey communities. However, we lack evidence of how warming-induced evolutionary changes in predators may influence natural food webs. Here, we ask whether wild fish subject to warming across multiple generations differ in their impacts on prey communities compared with their nearby conspecifics experiencing a natural thermal regime. We carried out a common garden mesocosm experiment with larval perch (Perca fluviatilis), originating from a heated or reference coastal environment, feeding on zooplankton communities under a gradient of experimental temperatures. Overall, in the presence of fish of heated origin, zooplankton abundance was higher and did not change with experimental warming, whereas in the presence of fish of unheated origin, it declined with experimental temperature. Responses in zooplankton taxonomic and size composition suggest that larvae of heated origin consume more large-sized taxa as the temperature increases. Our findings show that differences between fish populations, potentially representing adaptation to their long-term thermal environments, can affect the abundance, biomass, size and species composition of their prey communities. This suggests that rapid microevolution in predators to ongoing climate warming might have indirect cross-generational ecological consequences propagating through food webs.
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