Article
Biodiversity Conservation
Songbo Tang, Jianfeng Liu, Frank S. Gilliam, Peter Hietz, Zhiheng Wang, Xiankai Lu, Feiyan Zeng, Dazhi Wen, Enqing Hou, Yuan Lai, Yunting Fang, Ying Tu, Dan Xi, Zhiqun Huang, Dianxiang Zhang, Rong Wang, Yuanwen Kuang
Summary: The decrease in foliar delta N-15 does not necessarily indicate a decline in N availability, as foliar [N] remains constant in the studied plant species from southern China.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Environmental Sciences
Douglas A. Burns, Gopal Bhatt, Lewis C. Linker, Jesse O. Bash, Paul D. Capel, Gary W. Shenk
Summary: The atmospheric nitrogen deposition in the Chesapeake Bay watershed has been an important focus of research as a nutrient source and driver of estuarine trophic status. Historical data shows that the proportion of atmospheric nitrogen deposition in the watershed increased from 30% in 1950 to a peak of 40% in 1973, and then declined to 28% by 2015. This highlights the significant role of atmospheric nitrogen deposition in the Chesapeake Bay watershed and the potential for reducing deposition to improve water quality.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Ziru Lan, Weili Lin, Weiwei Pu, Zhiqiang Ma
Summary: Ammonia (NH3) plays a critical role in particulate matter formation and its atmospheric level is important for human health and climate change. This study conducted long-term observations of NH3 concentrations in both urban and suburban areas of Beijing, revealing similar seasonal variations but significant differences in daily average concentrations and diurnal variations between the two sites.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Environmental Sciences
Syuichi Itahashi, Kentaro Hayashi, Shigenobu Takeda, Yu Umezawa, Kazuhide Matsuda, Tatsuya Sakurai, Itsushi Uno
Summary: The East Asian oceans are heavily impacted by atmospheric nitrogen deposition, with emissions dominated by ammonia and nitrogen oxides. Deposition of reduced nitrogen dominates over most land and open ocean, while oxidized nitrogen dominates over marginal seas and desert areas. Dry deposition of nitric acid and wet deposition of fine-mode nitrate and ammonium are important processes determining nitrogen deposition over the region.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Sydney C. Clark, Rebecca T. Barnes, Isabella A. Oleksy, Jill S. Baron, Meredith G. Hastings
Summary: Despite declining trends in atmospherically deposited nitrate since 2000, nitrate concentrations in high-elevation lakes of the Colorado Front Range remain elevated. The sources of elevated nitrate in surface waters include atmospheric deposition, glacial inputs, and nitrification within the catchment. The study results suggest that during the summer open-water season, alpine lakes receive a consistent contribution of uncycled atmospheric nitrate and nitrification plays a significant role in nitrate production within the catchment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Maria Jose Fernandez-Alonso, Eugenio Diaz-Pines, Agustin Rubio
Summary: Atmospheric nitrogen deposition rates influence soil nitrogen dynamics and soil respiration rates, with different responses observed in different seasons and tree species compositions. While long-term nitrogen enrichment had stable effects on soil respiration, short-term responses included loss of base cations, soil acidification, and reduced microbial biomass, highlighting the need for further investigation into long-term consequences for belowground carbon and nitrogen cycles.
Article
Biodiversity Conservation
Camille de la Vega, Pearse J. Buchanan, Alessandro Tagliabue, Joanne E. Hopkins, Rachel M. Jeffreys, Anne Kirstine Frie, Martin Biuw, Joanna Kershaw, James Grecian, Louisa Norman, Sophie Smout, Tore Haug, Claire Mahaffey
Summary: This study investigates the impact of multiple environmental forcings on the Arctic marine ecosystem using stable nitrogen isotopes (δN-15). By combining 60-year records and advanced ocean modeling, a significant decline in δN-15 values at the base of the Barents Sea food web was observed. This is attributed to anthropogenic nitrogen deposition, increased northward transport of Atlantic water, and increasing Arctic primary production.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Environmental Sciences
Xu Yu, Yee Ka Wong, Jian Zhen Yu
Summary: This study expanded a new instrumental method for monitoring inorganic nitrogen (IN) and organic nitrogen (ON) in PM2.5 and PM10 samples. The results showed that ON accounted for a significant proportion of total nitrogen in fine and coarse particles, and had potential sources such as sea spray, biological particles, and dust mixed with anthropogenic pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Bin-Le Lin, Yoko Kumon, Kazuya Inoue, Naoko Tobari, Mianqiang Xue, Kiyotaka Tsunemi, Akihiko Terada
Summary: The study investigates the relationship between reactive nitrogen compounds (Nrs) deposition and plant diversity loss in Japan through analyzing long-term nationwide monitoring data. The findings indicate that there is a correlation between increased atmospheric Nrs deposition and plant species loss, with some monitoring sites showing decreased annual Nrs deposition while others showing increased deposition and corresponding plant species loss.
ENVIRONMENTAL POLLUTION
(2021)
Article
Plant Sciences
Fiona M. Seaton, David A. Robinson, Don Monteith, Inma Lebron, Paul Buerkner, Sam Tomlinson, Bridget A. Emmett, Simon M. Smart
Summary: Sulphur deposition through rainfall has caused species loss and ecosystem degradation globally. This study analyzes data from thousands of sites across Great Britain and finds that reductions in sulphur emissions have led to gradual recovery of acidified ecosystems in low-intensity habitats, but not in high-intensity habitats. Nitrogen deposition has no additional effect on soil acidity once sulphur deposition is accounted for.
JOURNAL OF ECOLOGY
(2023)
Article
Environmental Sciences
J. I. Czarnecki, D. F. Levia, J. R. Scudlark, T. Ouyang, A. S. Wozniak
Summary: Changes in anthropogenic activities have affected the speciation and concentration of reactive nitrogen delivered to coastal and oceanic waters through precipitation. However, the knowledge about dissolved organic nitrogen (DON) in rainwater is limited, despite its importance and potential contributions to primary and secondary production. A study in Delaware, USA, found a decrease in rainwater nitrogen and carbon amounts between 1994 and 2019, with the major reduction observed for nitrate. Season, airmass back trajectory, rainfall amount, and meteorology influenced the amounts of nitrogen. DON had different seasonal patterns compared to inorganic nitrogen and dissolved organic carbon, suggesting a biological source. The findings highlight the dynamic nature of atmospheric fluxes and the need for reevaluating models of atmospheric deposition to accurately assess inputs from changing atmospheric sources.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2023)
Article
Plant Sciences
Bin Yang, Miaomiao Cui, Yizhou Du, Guangqian Ren, Jian Li, Congyan Wang, Guanlin Li, Zhicong Dai, Susan Rutherford, Justin S. H. Wan, Daolin Du
Summary: Invasive plants pose a threat to biodiversity and economy, and global change factors associated with climate change can amplify their impact. This study evaluates the effects of these factors on the performance and competitiveness of native and invasive plants, finding that invasive plants gain advantages over natives under increased precipitation or in combination with temperature. The interactive effects of factors on plants are non-additive, but the advantages of invasive plants may not increase indefinitely.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Sharmin Akter, Carmen Lamancusa, Andrea Naranjo-Soledad, Sarah Rumsey, Xuanwen Chen, Kristina Wagstrom
Summary: This study evaluates the performance of the Comprehensive Air Quality Model with Extensions in predicting nitrogen deposition in various regions of the United States. The estimated deposition fluxes align with recent trends and provide valuable information for water quality and ecosystem management.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Zhang Baijuan, Li Zongxing, Feng Qi, Gui Juan, Zhao Yue, Zhang Baiting
Summary: This study conducted an observational study on the Qilian Mountains and analyzed precipitation data to quantify the N deposition in the transition zone between the Tibetan Plateau and the arid region. The results showed that NO3?-N deposition was the main form of wet deposition of atmospheric N, and altitude, meteorological factors, and ecosystem types influenced the wet deposition. This study provides a scientific basis for environmental protection in the transition zone.
Article
Environmental Sciences
Meredith G. Lassiter, Jiajia Lin, Jana E. Compton, Jennifer Phelan, Robert D. Sabo, John L. Stoddard, Stephen R. McDow, Tara L. Greaver
Summary: The composition of atmospheric nitrogen deposition in the United States is changing spatially and temporally, with reduced nitrogen now equivalent to oxidized nitrogen in national average deposition. To assess the effects of this change on stream chemistry, data on nitrogen deposition form and stream measurements were analyzed. It was found that there is a shift from oxidized nitrogen dominance to reduced nitrogen dominance in atmospherically-influenced watersheds. The correlation between reduced nitrogen deposition and stream nitrate concentrations was weaker compared to oxidized nitrogen deposition.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biodiversity Conservation
Rachael Treharne, Jarle W. Bjerke, Hans Tommervik, Laura Stendardi, Gareth K. Phoenix
GLOBAL CHANGE BIOLOGY
(2019)
Article
Soil Science
Qingling Fu, Maider Abadie, Aimeric Blaud, Alison Carswell, Tom H. Misselbrook, Ian M. Clark, Penny R. Hirsch
BIOLOGY AND FERTILITY OF SOILS
(2020)
Article
Soil Science
Jeremy Puissant, Briony Jones, Tim Goodall, Dana Mang, Aimeric Blaud, Hyun Soon Gweon, Ashish Malik, Davey L. Jones, Ian M. Clark, Penny R. Hirsch, Robert Griffiths
SOIL BIOLOGY & BIOCHEMISTRY
(2019)
Article
Ecology
Ana M. Sabater, Helen C. Ward, Timothy C. Hill, Jemma L. Gornall, Thomas J. Wade, Jonathan G. Evans, Ana Prieto-Blanco, Mathias Disney, Gareth K. Phoenix, Mathew Williams, Brian Huntley, Robert Baxter, Maurizio Mencuccini, Rafael Poyatos
Article
Environmental Sciences
Isla H. Myers-Smith, Jeffrey T. Kerby, Gareth K. Phoenix, Jarle W. Bjerke, Howard E. Epstein, Jakob J. Assmann, Christian John, Laia Andreu-Hayles, Sandra Angers-Blondin, Pieter S. A. Beck, Logan T. Berner, Uma S. Bhatt, Anne D. Bjorkman, Daan Blok, Anders Bryn, Casper T. Christiansen, J. Hans C. Cornelissen, Andrew M. Cunliffe, Sarah C. Elmendorf, Bruce C. Forbes, Scott J. Goetz, Robert D. Hollister, Rogier de Jong, Michael M. Loranty, Marc Macias-Fauria, Kadmiel Maseyk, Signe Normand, Johan Olofsson, Thomas C. Parker, Frans-Jan W. Parmentier, Eric Post, Gabriela Schaepman-Strub, Frode Stordal, Patrick F. Sullivan, Haydn J. D. Thomas, Hans Tommervik, Rachael Treharne, Craig E. Tweedie, Donald A. Walker, Martin Wilmking, Sonja Wipf
NATURE CLIMATE CHANGE
(2020)
Article
Soil Science
Manoj Menon, Tinashe Mawodza, Arash Rabbani, Aimeric Blaud, Georg J. Lair, Masoud Babaei, Milena Kercheva, Svetala Rousseva, Steven Banwart
Article
Soil Science
Frederique Changey, Aimeric Blaud, Anne Pando, Anke M. Herrmann, Thomas Z. Lerch
Summary: Despite technological advances, DNA extraction from soil is crucial for studying soil microbial communities. Different methods can significantly affect fungal and archaeal communities compared to bacterial ones. The choice of DNA extraction method can impact the correlations between microbial communities and environmental variables.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2021)
Article
Multidisciplinary Sciences
Ian M. Clark, Qingling Fu, Maider Abadie, Elizabeth R. Dixon, Aimeric Blaud, Penny R. Hirsch
SCIENTIFIC REPORTS
(2020)
Editorial Material
Biodiversity Conservation
Gareth K. Phoenix, Rachael Treharne
GLOBAL CHANGE BIOLOGY
(2022)
Article
Soil Science
Erik S. Button, Miles Marshall, Antonio R. Sanchez-Rodriguez, Aimeric Blaud, Maider Abadie, David R. Chadwick, David L. Jones
Summary: Agricultural soil emissions of greenhouse gases (GHGs) are a result of the balance between sinks and sources. The fluxes of GHGs from soils are complex and vary spatially and temporally. Understanding the drivers and dynamics of these gases within the soil profile is crucial for reducing emissions and improving agricultural sustainability.
Article
Plant Sciences
Stef Bokhorst, Jarle W. Bjerke, Gareth K. Phoenix, Laura Jaakola, Hanne K. Maehre, Hans Tommervik
Summary: Arctic ecosystems are increasingly exposed to extreme climatic events, which can impact species performance. This study examined the physiological responses of seven dominant sub-Arctic cryptogams to single and combined extreme events. Winter extremes affect cryptogam physiology, while summer responses appear to be mild. Lichens have a greater effect on the photobiont than the mycobiont.
PHYSIOLOGIA PLANTARUM
(2023)
Editorial Material
Biodiversity Conservation
Gareth K. K. Phoenix, Abdulssalam H. H. Khafsha
GLOBAL CHANGE BIOLOGY
(2023)
Article
Geosciences, Multidisciplinary
J. Ben Keane, Iain P. Hartley, Christopher R. Taylor, Jonathan R. Leake, Marcel R. Hoosbeek, Franco Miglietta, Gareth K. Phoenix
Summary: Increasing atmospheric CO2 enhances plant productivity, but nitrogen and phosphorus limitation can constrain plant responses to elevated CO2. In an experiment conducted in the Peak District National Park, grasslands with contrasting levels of phosphorus limitation showed different productivity responses to elevated CO2, with competition between plants and microbes for phosphorus playing a key role.
Article
Environmental Sciences
J. Ben Keane, Marcel R. Hoosbeek, Christopher R. Taylor, Franco Miglietta, Gareth K. Phoenix, Iain P. Hartley
Article
Plant Sciences
Gareth K. Phoenix, David A. Johnson, Stephen P. Muddimer, Jonathan R. Leake, Duncan D. Cameron