Ecological threat

  • 文章类型: Journal Article
    目前,自然和城市生态系统受到不同类型的大气沉积的影响,这会损害环境的平衡。塑料污染是生物群的主要威胁之一,包括地衣.附生地衣作为环境污染的生物指标具有价值,气候变化,和人为影响。在这项研究中,我们的目的是研究空气中微塑料沿人为污染梯度的地衣生物积累。我们对来自Cladonia和Xanthoria的地衣进行了采样,以强调地衣作为微塑料被动生物监测工具的有效性。我们选择了三个地点,AltipianidiArcinazzo的“自然遗址”,Castelporziano总统庄园的“受保护站点”和罗马市中心的“城市站点”。总的来说,我们采样了90个地衣,观察到外部塑料截留,在过氧化氢中熔化,并分析塑料截留。要验证该方法,我们计算了地衣中微塑料的回收率。特别是,在90个地衣样品中检测到253个MPs颗粒:97%是纤维,3%是碎片。整个地点的微塑料纤维数量出现了梯度,随着微塑料从自然地点(n=58)到城市地点(n=116)的积累,与空气中的微塑料纤维的长度和丰度之间存在直接关系。此外,我们发现了由地衣包裹的空气中塑料的第一个证据。平均而言,自然遗址经历了最短的纤维长度和最长的罗马中心。这两个属的微塑料积累没有差异。我们的结果表明,地衣可以有效地用于微塑料沉积的被动生物监测。在这种情况下,必须研究地衣在截留微塑料和保护原始区域中的作用。此外,考虑到空气中的微塑料对人体健康的影响以及地衣作为空气中的微塑料生物指标的有效性,他们的使用受到鼓励。
    Currently, natural and urban ecosystems are affected by different types of atmospheric deposition, which can compromise the balance of the environment. Plastic pollution represents one of the major threats for biota, including lichens. Epiphytic lichens have value as bioindicators of environmental pollution, climate change, and anthropic impacts. In this study, we aim to investigate the lichen bioaccumulation of airborne microplastics along an anthropogenic pollution gradient. We sampled lichens from the Genera Cladonia and Xanthoria to highlight the effectiveness of lichens as tools for passive biomonitoring of microplastics. We chose three sites, a \"natural site\" in Altipiani di Arcinazzo, a \"protected site\" in Castelporziano Presidential estate and an \"urban site\" in the centre of Rome. Overall, we sampled 90 lichens, observed for external plastic entrapment, melt in oxygen peroxide and analysed for plastic entrapment. To validate the method, we calculated recovery rates of microplastics in lichen. Particularly, 253 MPs particles were detected across the 90 lichen samples: 97 % were fibers, and 3 % were fragments. A gradient in the number of microplastic fibers across the sites emerged, with increasing accumulation of microplastics from the natural site (n = 58) to the urban site (n = 116), with a direct relationship between the length and abundance of airborne microplastic fibers. Moreover, we detected the first evidences of airborne mesoplastics entrapped by lichens. On average, the natural site experienced the shortest fibre length and the centre of Rome the longest. No differences in microplastics accumulation emerged from the two genera. Our results indicated that lichens can effectively be used for passive biomonitoring of microplastic deposition. In this scenario, the role of lichens in entrapping microplastics and protecting pristine areas must be investigated. Furthermore, considering the impact that airborne microplastics can have on human health and the effectiveness of lichens as airborne microplastic bioindicators, their use is encouraged.
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  • 文章类型: Journal Article
    许多研究强调,河流将陆基塑料运输到海洋。然而,大部分垃圾仍然停留在河流生态系统中,也被植被阻挡。迄今为止,对河流大型凋落物的研究侧重于漂浮和河岸监测,因此,已经开发了对河岸和漂浮垃圾进行采样的方法。关于河流,最近很少有研究强调河岸植被在截留塑料中的作用。鉴于植被代表了河流生态系统的很大一部分,并且忽略了植被截留的塑料动力学,更详细地研究植被如何有助于塑料滞留似乎至关重要。然而,由于目前的协议和指南只考虑了浮动和河岸塑料,而没有提供标准化和更新的策略来监测植被中的垃圾,在这里,我们旨在开发一种新的标准化协议和工具来评估植被中的塑料。具体来说,我们专注于揭示与塑料发生有关的植被的三维结构,同时考虑季节和水文形态方面。为了研究植被的诱捕效应,我们开发了与塑料相关的三维植被结构指数(3DVI)。3DVI指数考虑了植物结构(即,分支数量)和多样性(即,种)。要测试3DVI,我们在意大利中部进行了现场案例研究.我们发现,初级和次级河岸植被都阻塞了塑料垃圾。详细来说,3DVI与塑料的数量相关,强调最密集和最多样化的社区捕获更多的塑料。此外,我们首次提供了河岸植被对大型塑料截留的季节性评估,以及对风吹塑料的初步量化。我们的结果应该有助于促进制定河岸生境管理和保护的标准化和协调监测战略。
    Many studies highlighted that rivers transported land-based plastics to the sea. However, most of the litter remains stuck in the fluvial ecosystem, also blocked by vegetation. To date, research on riverine macrolitter focused on floating and riverbank monitoring, thus methods to sample riverbank and floating litter have been developed. Concerning rivers, few recent studies highlighted the role of riparian vegetation in entrapping plastics. Given that vegetation represents a large part of riverine ecosystems and that the dynamics of plastics entrapped by vegetation are neglected, it appears pivotal to study in more detail how vegetation contributes to plastic retention. However, as current protocols and guidelines considered only floating and riverbank plastics without providing standardized and updated strategies to monitor litter in vegetation, here we aimed to develop a new standardized protocol and tools to assess plastics in vegetation. Specifically, we focused on unveiling the three-tridimensional structure of vegetation in relation to plastic occurrence, while considering seasonal and hydromorphological aspects. To investigate the trapping effect of vegetation, we developed a three-dimensional vegetation structure index (3DVI) related to plastics. The 3DVI index considers plant structure (i.e., number of branches) and diversity (i.e., species). To test the 3DVI, we conducted an in-situ case study in central Italy. We found that both primary and secondary riparian vegetation blocked plastic litter. In detail, 3DVI correlated with the number of plastics, highlighting that the densest and most diverse communities trap more plastics. Furthermore, we provided for the first time the assessment of seasonality for the macroplastic entrapment by riparian vegetation and a preliminary quantification of wind-blown plastics. Our results should be of interest to promote the development of standardized and harmonized monitoring strategies for riparian habitat management and conservation.
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  • 文章类型: Journal Article
    构建海洋生态安全庇护所(MESS)已成为我国应对海洋生态威胁的主要策略。由于中国的海洋政策缺乏一个强有力的框架文件,政策体系能否有效支持MESS的建设是需要考虑的。然而,MESS的建设措施与相关政策之间的联系尚不明确。因此,本文的目的是阐明MESS的概念及其与政策的联系,采用政策内容分析法分析MESS相关政策体系的演化过程。然后对MESS相关政策体系的立法缺陷和实施障碍进行了总结和讨论。结果表明,从1981年到2021年,MESS相关政策体系不断完善。然而,政策体系对MESS建设的支撑和保障能力仍有待提高。(1)由于缺乏基本法和特别法,治理主体之间和政策之间的协调缺乏立法保障。(2)MESS的建设延续了海洋环境协同治理的区域间和部门间的行政壁垒。建立有效的协同治理模式,完善治理结构和机制至关重要。(3)政府主导型治理模式面临机制失灵问题。指挥控制仪器占82%以上,公众和企业参与海洋治理缺乏强有力的政策保障。(4)必须提高政策系统对新出现威胁的适应性。海洋政策很少涉及气候变化和新污染物等新出现的威胁。同时,实时监管机制薄弱。实时监管仅占10%左右。一般来说,作为一项复杂而长期的系统工程,MESS的建设不可避免地会遇到政治上的矛盾,文化,和经济。中国应深化海洋生态文明建设,形成基于生态系统的治理理念。总的来说,本文有助于全面理解MESS与政策的内在联系,为提高我国海洋治理能力提供新的视角。
    Building a marine ecological security shelter (MESS) has become the main strategy to adapt marine ecological threats in China. As China\'s marine policy lacks a robust framework document, it is necessary to consider whether the policy system can effectively support the construction of MESS. However, the linkage between the construction measures of MESS and related policies is not clear. Therefore, the purpose of this paper is to clarify the concept of MESS and its connection with policy, by adopting the policy content analysis method to analyze the evolution process of MESS-related policy system. The legislative shortcomings and implementation obstacles of the MESS-related policy system are then summarized and discussed. The results show that from 1981 to 2021 the MESS-related policy system has been continuously improved. However, the policy system\'s support and guarantee capacity for building MESS still needs to be improved. (1) Due to the lack of basic laws and special laws, the coordination among governance subjects and among policies lacks legislative guarantee. (2) The construction of MESS continues the inter-regional and inter-department administrative barriers in collaborative governance of marine environment. To establish an effective collaborative governance model, it is essential to improve the governance structure and mechanism. (3) The government-led governance pattern faces the problem of mechanism failure. The command and control instrument accounts for more than 82%, and the public and enterprises lack strong policy guarantees to participate in marine governance. (4) The policy system\'s adaptability to emerging threats must be improved. Marine policies rarely involve emerging threats such as climate change and new pollutants. Meanwhile, the real-time supervision and monitoring mechanism is weak. The real-time supervision is only accounting for about 10%. Generally speaking, as a complex and long-term system engineering, the construction of MESS will inevitably encounter contradictions in politics, culture, and economy. China should deepen the construction of marine ecological civilization and form a governance concept based on ecosystems. Overall, this paper helps to understand the internal connection between MESS and policy comprehensively and provides a new perspective for improving China\'s marine governance capacity.
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  • 文章类型: Journal Article
    COVID-19大流行被认为是过去几年中最重要的全球灾难之一。感染的迅速增加,死亡,治疗,和疫苗接种过程导致过度使用作为微污染物进入环境的药物。考虑到先前关于在卡利废水中发现的药物存在的信息,哥伦比亚,收集于2015年至2022年。COVID-19大流行后监测的数据显示,镇痛药和抗炎药的浓度增加了91%。这种增加与轻度症状的药物消耗有关,如发烧和疼痛。此外,药物浓度的增加构成了高度的生态威胁,比COVID-19大流行之前报告的高出14倍。这些结果表明,COVID-19不仅影响了人类健康,而且对环境健康也有影响。
    The COVID-19 pandemic is considered one of the most significant global disasters in the last years. The rapid increase in infections, deaths, treatment, and the vaccination process has resulted in the excessive use of pharmaceuticals that have entered the environment as micropollutants. Considering the prior information about the presence of pharmaceuticals found in the wastewater of Cali, Colombia, which was collected from 2015 to 2022. The data monitored after the COVID-19 pandemic showed an increase in the concentration of analgesics and anti-inflammatory drugs of up to 91%. This increase was associated with the consumption of pharmaceuticals for mild symptoms, such as fever and pain. Moreover, the increase in concentration of pharmaceuticals poses a highly ecological threat, which was up to 14 times higher than that reported before of COVID-19 pandemic. These results showed that the COVID-19 had not only impacted human health but also had an effect on environmental health.
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  • 文章类型: Journal Article
    COVID-19大流行的爆发刺激了对一次性口罩的需求达到前所未有的水平,对废弃口罩的不当处理或处置也对自然环境构成重大风险。为了降低这种环境风险并最大限度地提高废弃口罩的附加值,本文提出了将废口罩纤维(MF)与废食用油(WCO)结合回收用于热拌沥青(HMA)的应用。首先设计并制造了一系列MFWCO改性沥青粘合剂。然后系统地测量它们的性能。物理流变试验结果表明,MF的掺入能显著提高沥青结合料的抗高温车辙性能。然而,还可能降低沥青的低温抗裂性能。发现添加WCO可以有效地补偿这种低温性能损失,并且MF5%+WCO3%被确定为最佳组合。傅里叶变换红外(FTIR)光谱测试结果表明,由MFWCO改性的沥青仅涉及物理改性。性能测试结果表明,MF5%+WCO3%改性HMA的高温抗永久变形性能和低温抗裂性能有了较大的提高,虽然其水分稳定性略有降低,但仍符合规范要求。环境效益评估证明,回收废旧口罩用于沥青铺路可以在减少碳排放和节省土地资源方面为路面工程提供巨大的附加值。
    The outbreak of the COVID-19 pandemic has stimulated the demand for disposable masks to an unprecedented level, which also poses a significant risk to the natural environment from the improper treatment or disposal of waste masks. To lower such an environmental risk and maximize the added value of the waste masks, this paper proposed to recycle the waste mask fiber (MF) in combination with the waste cooking oil (WCO) for hot mix asphalt (HMA) application. A series of MF + WCO modified asphalt binders were first designed and fabricated. Their performance properties were then systematically measured. The physical-rheological test results showed that the incorporation of MF can significantly improve the high-temperature rutting resistance performance of asphalt binder. However, it may also lower the asphalt\'s low-temperature anti-cracking performance. The addition of WCO was found to compensate for this low-temperature performance loss effectively, and the MF5% + WCO3% was identified as the best combination. The Fourier transform infrared (FTIR) spectroscopy test results revealed that the asphalt modified by the MF + WCO involved only a physical modification. The performance test results indicated that the high-temperature permanent deformation resistance and low-temperature anti-cracking of MF5% + WCO3% modified HMA was greatly enhanced, while its moisture stability was slightly reduced but still met the specification requirement. The environmental benefit assessments proved that recycling the waste masks for asphalt paving can provide an enormous added value to pavement engineering in terms of carbon emission reduction and land resource saving.
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  • 文章类型: Journal Article
    人们对严格规范的渴望各不相同,这些差异的道德基础还有待探索。当前的研究检查了个人持有的道德信仰是否以及如何影响他们希望自己的国家紧缩的程度(即,具有严格的社会规范)或松散(即,拥有更宽松的社会规范)。特别是,“绑定”和“个性化”基础的影响,这是道德信仰,专注于群体和个人的重要性,分别,进行了检查。我们假设有约束力的基础可以预测人们对文化紧密的渴望。我们还假设,一个人的社会受到威胁的看法可能会导致这种影响。使用横截面(研究1和3)和双波(研究2)设计进行了三项研究。人口变量和参与者的政治取向效应受到控制。在研究1中,只有粘结基础显着预测了更高的期望紧密度。在研究2中,结合地基预测了随访时测得的所需紧密度。在研究3中,通过结合基础确认了感知到的威胁对所需密封性的积极影响。从额外的论文内分析中,我们也有一些重要关系的证据,尽管在研究中不稳定,在所需的紧密度和个性化的基础之间。
    People vary on their desire for strict norms, and the moral underpinnings of these differences have yet to be explored. The current research examined whether and how moral beliefs held by individuals would affect the extent to which they want their country to be tight (i.e., having strict social norms) or loose (i.e., having more permissive social norms). In particular, the effects of the \"binding\" and \"individualizing\" foundations, which are moral beliefs focused on the importance of groups and individuals, respectively, were examined. We hypothesized that the binding foundations could predict people\'s desire for cultural tightness. We also hypothesized that the perception that one\'s society is threatened may drive this effect. Three studies were conducted using both cross-sectional (Studies 1 and 3) and two-wave (Study 2) designs. Demographic variables and participants\' political orientation effects were controlled. In Study 1, only the binding foundations significantly predicted higher desired tightness. In Study 2, binding foundations predicted desired tightness measured at follow-up. In Study 3, the positive effect of perceived threat on desired tightness via the binding foundations was confirmed. From additional within-paper analyses we also have some evidence of significant relationships, albeit unstable across studies, between desired tightness and individualizing foundations.
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