Article
Plant Sciences
Andreea Lupitu, Cristian Moisa, Simona Gavrilas, Mihaela Dochia, Dorina Chambre, Virgiliu Ciutina, Dana Maria Copolovici, Lucian Copolovici
Summary: The study found that elevated carbon dioxide concentrations have various effects on plants, including increased assimilation rate and stomatal conductance, increased emission of monoterpenes, and decreased total polyphenols and flavonoids content.
Article
Plant Sciences
Mikhail Surso, Sergei Khviyuzov, Dmitry Chukhchin
Summary: The composition of pollen tubes of Scots pine was studied, showing that the protoplast apical zone and the parietal layer near the tube's tip are actively involved in ion transport regulation. The distribution of chemical compounds varies along the length of the tube, with significant differences in the nucleus region and the parietal layer indicating the role of H+ gradient as a driving force for vesicle transport and growth regulation. The content of different compounds also changes at different parts of the tube.
PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS
(2023)
Article
Biochemistry & Molecular Biology
Adrian Nisca, Ruxandra Stefanescu, Diana Ionela Stegarus, Anca Delia Mare, Lenard Farczadi, Corneliu Tanase
Summary: The study evaluated and compared the chemical composition and biological activities of two different pine species (Pinus nigra and Pinus sylvestris) bark extracts, finding that extracts from Pinus sylvestris had higher antioxidant activity and better antibacterial effects, while Pinus nigra extracts contained higher levels of volatile compounds.
Article
Plant Sciences
Tae-Lim Kim, Hyemin Lim, Hoyong Chung, Karpagam Veerappan, Changyoung Oh
Summary: This study investigated the physiological response and transcriptome changes of Pinus densiflora grown in an environment with elevated CO2 concentration. The results showed that nonstructural carbohydrates increased, chlorophylls decreased, and antioxidant activity increased at elevated CO2 concentration. Differences in the transcriptomes were also observed, with genes related to glycolysis/gluconeogenesis and starch/sucrose metabolism showing different expression patterns at different levels of elevated CO2 concentration.
Article
Forestry
Aleksandra Halarewicz, Antoni Szumny, Paulina Baczek
Summary: The invasive black cherry in temperate European forests has a negative impact on the regeneration capacity of Scots pine, primarily due to the allelopathic effect of volatile compounds emitted from its leaves. Specific volatile organic compounds from black cherry saplings have been identified to significantly inhibit root growth of pine seedlings, with linalool showing strong allelopathic potential. This study suggests that volatile compounds from black cherry leaves may limit the survival of Scots pine individuals in the seedling phase.
Article
Plant Sciences
Christine Y. Chang, Faride Unda, Shawn D. Mansfield, Ingo Ensminger
Summary: This study investigates the adjustments of photosynthesis and carbon allocation in Pinus strobus seedlings in response to changes in photoperiod, temperature, and CO2 levels. The results show that the seedlings rapidly adjust the allocation of nonstructural carbohydrates (NSCs) to accommodate short photoperiod, but the combination of short photoperiod and low temperature or long photoperiod and elevated CO2 disrupts the balance between photosynthesis and carbon sink capacity, resulting in increased nonphotochemical quenching (NPQ) to alleviate excess energy.
PHYSIOLOGIA PLANTARUM
(2023)
Article
Environmental Sciences
Daniel Gonzalez, Joan Colon, Antoni Sanchez, David Gabriel
Summary: This study conducted a characterization of gaseous emissions in a full-scale municipal wastewater treatment plant in Barcelona to identify the main sources of odour and greenhouse gas emissions. The results can be used to develop mitigation strategies and estimate the environmental impact of wastewater treatment plants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Plant Sciences
Alice Gauthey, Christoph Bachofen, Janisse Deluigi, Margaux Didion-Gency, Petra D'Odorico, Jonas Gisler, Eugenie Mas, Marcus Schaub, Philipp Schuler, Christopher J. Still, Alex Tunas, Charlotte Grossiord
Summary: Global warming and droughts affect the thermal limits of forests, impacting tree carbon uptake and growth. In this study, the effect of soil moisture on the dynamics of photosynthesis, stomatal conductance, and canopy temperature were analyzed. Irrigation increased photosynthetic performance, while soil drought reduced tree's temperature optimum.
Article
Plant Sciences
Enrica Alicandri, Stefano Covino, Bartolomeo Sebastiani, Anna Rita Paolacci, Maurizio Badiani, Agostino Sorgona, Mario Ciaffi
Summary: In this study, a quantitative analysis of monoterpene composition was carried out in different tissues of Pinus nigra. Seven monoterpene synthase genes were isolated from the same plant tissues, and their expression profiles were found to be consistent with the corresponding metabolite profiles.
Article
Environmental Sciences
Ingvild Ryde, Cleo L. Davie-Martin, Tao Li, Mads P. Naursgaard, Riikka Rinnan
Summary: This study found that mosses and lichens emit large amounts of VOCs, and these emissions are species dependent.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Forestry
Riina Muilu-Makela, Petri Kilpelainen, Veikko Kitunen, Anni Harju, Martti Venalainen, Tytti Sarjala
Summary: The study found that VM emissions from different woods are influenced by moisture content, knots, tree species, and tree individuals. When a certain level of moisture content is reached, VM levels decrease. Rehydration and dehydration lead to increased and decreased VM emissions, respectively.
Article
Plant Sciences
Emilio L. Marcos-Barbero, Pilar Perez, Rafael Martinez-Carrasco, Juan B. Arellano, Rosa Morcuende
Summary: Genetic diversity exploration is a powerful approach for selecting genotypes with improved quality and dissecting the impact of the environment on grain yield and nutritional composition.
Article
Biodiversity Conservation
Junxia Li, Fangbo Song, Yuting Jin, Ruixin Yun, Zhenju Chen, Zhaoyang Lyu, Ying Zhao, Di Cui
Summary: Temperature plays a critical role in phenology and growth of dominant tree species in cold temperate zones, affecting the structure and function of coniferous forests. Understanding the critical temperatures for radial growth of Mongolian pine in different seasons is important for predicting changes in phenology and growth of conifers in cold temperate regions under warming climate scenarios. The increase in temperature is leading to an advanced and extended xylem growing season, resulting in greater wood production.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Yaqin Gao, Mei Li, Xiao Wan, Xiuwen Zhao, Yang Wu, Xiaoxia Liu, Xiang Li
Summary: This study conducted measurements of volatile organic compounds (VOCs) in the atmosphere at an urban site in Zibo, and found unexpected results such as higher emission ratios of aromatics compared to central eastern China. Additionally, the research results indicated that alkenes were the dominant contributor to ozone formation potential (OFP), while aromatics could produce large amounts of secondary organic aerosol (SOA).
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Engineering, Environmental
Max J. Krause, William Eades, Natalie Detwiler, Thabet Tolaymat
Summary: Elevated temperature landfills (ETLFs) are municipal solid waste (MSW) landfills that have been impacted by subsurface exothermic reactions (SERs) and display unusual gas and leachate composition. Analysis of leachate quantity and quality data at an ETLF in Ohio, USA identified indicators of a SER, including increases in leachate generation, changes in pH, electrical conductivity, total dissolved solids, and the concentration of certain metals and volatile organic compounds.
Article
Environmental Sciences
Muhammad Waqas, Majid Nazeer, Man Sing Wong, Wu Shaolin, Li Hon, Joon Heo
Summary: The socio-economic restriction measures implemented in the United States have significantly reduced nitrogen dioxide (NO2) emissions. The study highlights the impact of factors such as human mobility, population density, income, climate, and stationary sources on the reduction of NO2 at different stations. The research emphasizes the scientific impacts of the NO2 reduction and income inequality revealed by the pandemic on air quality and health disparities.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Guorui Zhi, Jinhong Du, Aizhong Chen, Wenjing Jin, Na Ying, Zhihui Huang, Peng Xu, Di Wang, Jinghua Ma, Yuzhe Zhang, Jiabao Qu, Hao Zhang, Li Yang, Zhanyun Ma, Yanjun Ren, Hongyan Dang, Jianglong Cui, Pengchuan Lin, Zhuoshi He, Jinmin Zhao, Shuo Qi, Weiqi Zhang, Wenjuan Zhao, Yingxin Li, Qian Liu, Chen Zhao, Yi Tang, Peng Wei, Jingxu Wang, Zhen Song, Yao Kong, Xiangzhe Zhu, Yi Shen, Tianning Zhang, Yangxi Chu, Xinmin Zhang, Jiafeng Fu, Qingxian Gao, Jingnan Hu, Zhigang Xue
Summary: An comprehensive emission inventory for China in 2019, which includes both air pollutants and greenhouse gases, was developed in this study. The inventory utilizes existing frameworks and data to provide comparable emissions data and demonstrates the relationship between emissions and economic development.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
I-Ting Ku, Yong Zhou, Arsineh Hecobian, Katherine Benedict, Brent Buck, Emily Lachenmayer, Bryan Terry, Morgan Frazier, Jie Zhang, Da Pan, Lena Low, Amy Sullivan, Jeffrey L. Collett Jr
Summary: Unconventional oil and natural gas development (UOGD) in the United States has expanded rapidly in recent decades, raising concerns about its impact on air quality. This study conducted extensive air monitoring during the development of several large well pads in Broomfield, Colorado, providing a unique opportunity to examine changes in local air toxics and VOC concentrations during well drilling and completions and production. The study identified significant increases in VOC concentrations during drilling operations, highlighting the importance of emissions from synthetic drilling mud. The findings suggest opportunities to mitigate emissions during UOGD operations.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Puji Lestari, Akbar R. Tasrifani, Wiranda I. Suri, Martin J. Wooster, Mark J. Grosvenor, Yusuke Fujii, Vissia Ardiyani, Elisa Carboni, Gareth Thomas
Summary: This study developed field emission factors for various pollutants in peatland fires and estimated the total emissions. Gas samples were collected using an analyzer, while particulate samples were collected using air samplers. The study found significant emissions of CO2, CO, PM2.5, carbon aerosols, water-soluble ions, and elements from the fires in Central Kalimantan, Indonesia in 2019.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Ligang Li, Yuyu Chen, Lu Fan, Dong Sun, Hu He, Yongshou Dai, Yong Wan, Fangfang Chen
Summary: A high-precision retrieval method based on a deep convolutional neural network and satellite remote sensing data is proposed to obtain accurate methane vertical profiles.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Hyung Joo Lee, Toshihiro Kuwayama, Michael Fitzgibbon
Summary: This study investigated the changes in nitrogen dioxide (NO2) air pollution levels and their disparities in California, U.S. during the pandemic of coronavirus disease 2019 (COVID-19). The results showed a decrease in NO2 concentrations, especially in urban and high-traffic areas. However, socially vulnerable populations still experienced higher levels of NO2 exposure. The study suggests that reducing NO2 disparities, particularly racial inequity, can be achieved through continued regulatory actions targeting traffic-related NOx emissions.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Maria Chiara Pietrogrande, Beatrice Biffi, Cristina Colombi, Eleonora Cuccia, Umberto Dal Santo, Luisa Romanato
Summary: This study investigates the chemical composition and oxidative potential of PM10 particles in the Po Valley, Italy, and demonstrates the impact of high levels of atmosphere ammonia. The rural area had significantly higher ammonia concentrations compared to the urban site, resulting in higher levels of secondary inorganic aerosol. Although the SIA components did not contribute significantly to the PM10 oxidative reactivity, they were correlated with the oxidative potential measurements. This suggests that the contribution of SIA to PM oxidative toxicity cannot be ignored.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Natalie Allen, Jan Gacnik, Sarrah M. Dunham-Cheatham, Mae Sexauer Gustin
Summary: Accurate measurement of atmospheric reactive mercury is challenging due to its reactivity and low concentrations. The University of Nevada, Reno Reactive Mercury Active System (RMAS) has been shown to be more accurate than the industry standard, but has limitations including long time resolution and sampling biases. Increasing the sampling flow rate negatively affected RM concentrations, but did not impact the chemical composition of RM captured on membranes.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Chin-Yu Hsu, Wei-Ting Hsu, Ching-Yi Mou, Pei-Yi Wong, Chih-Da Wu, Yu-Cheng Chen
Summary: This study estimated the daily exposure concentrations of PM2.5 for elderly individuals residing in different regions of Taiwan using land use regression with machine learning (LUR_ML) and microenvironmental exposure (ME) models. The accuracy of the models varied across regions, with the ME models exhibiting higher predictions and lower biases. The use of region-specific microenvironmental measurements in the ME model showed potential for accurate prediction of personal PM2.5 exposure.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Xiaohan Si, Kerrie Mengersen, Chuchu Ye, Wenbiao Hu
Summary: This study found that there is an interactive effect between air pollutants and weather factors, which significantly affects influenza transmission. Future research should consider the interactive effects between pollutants and temperature or humidity to evaluate the environment-influenza association.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Luxi Xu, Ruijun Xu, Yunshao Ye, Rui Wang, Jing Wei, Chunxiang Shi, Qiaoxuan Lin, Ziquan Lv, Suli Huang, Qi Tian, Yuewei Liu
Summary: This study aimed to evaluate the impact of ambient air pollution on hospital admissions for angina. The results showed that exposure to ambient particulate matter, sulfur dioxide, nitrogen dioxide, carbon monoxide, and ozone are associated with an increased risk of hospital admissions for angina. The association with nitrogen dioxide exposure was found to be the strongest.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Xinyu Yu, Man Sing Wong, Majid Nazeer, Zhengqiang Li, Coco Yin Tung Kwok
Summary: This study proposes a novel method to address the challenge of missing values in satellite-derived AOD products and creates a comprehensive daily AOD dataset for the Guangdong-Hong Kong-Macao Greater Bay Area. By reconstructing missing values and developing a new model, the derived dataset outperforms existing products and agrees well with ground-based observations. Additionally, the dataset exhibits consistent temporal patterns and more spatial details.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Yidan Zhang, Yifan Xu, Bo Peng, Wu Chen, Xiaoyu Cui, Tianle Zhang, Xi Chen, Yuan Yao, Mingjin Wang, Junyi Liu, Mei Zheng, Tong Zhu
Summary: This study developed a sensitive method to measure the metallic components of atmospheric fine particulate matter (PM2.5) and compared the results with different analysis methods. The concentrations of metallic components in personal PM2.5 samples were found to be significantly different from corresponding fixed-site samples. Personal sampling can reduce exposure misclassifications, and measuring metallic components is useful for exploring health risks and identifying sources of PM2.5.
ATMOSPHERIC ENVIRONMENT
(2024)
Review
Environmental Sciences
Jamie Leonard, Lea Ann El Rassi, Mona Abdul Samad, Samantha Prehn, Sanjay K. Mohanty
Summary: Increasing concentrations of microplastics in the Earth's atmosphere could have adverse effects on ecosystems and human health. The deposition rate of airborne microplastics is influenced by both land use and climate, and a global analysis suggests that climate may have a greater impact on the concentration and deposition rate of microplastics than land use.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Tian Zhou, Xiaowen Zhou, Zining Yang, Carmen Cordoba-Jabonero, Yufei Wang, Zhongwei Huang, Pengbo Da, Qiju Luo, Zhijuan Zhang, Jinsen Shi, Jianrong Bi, Hocine Alikhodja
Summary: This study investigated the long-range transport and effects of North African and Middle Eastern dust in East Asia using lidar observations and model simulations. The results showed that the dust originated from multiple sources and had a long transport time. The vertical distribution of the dust was found to be crucial for assessing its impacts.
ATMOSPHERIC ENVIRONMENT
(2024)