Article
Geochemistry & Geophysics
Chuxian Li, Maxime Enrico, Oliver Magand, Beatriz F. Araujo, Gael Le Roux, Stefan Osterwalder, Aurelien Dommergue, Yann Bertrand, Jerome Brioude, Francois De Vleeschouwer, Jeroen E. Sonke
Summary: Mercury (Hg) stable isotopes were used to investigate the sources and deposition of atmospheric Hg. The study found that atmospheric Hg deposition and plant Hg uptake covaried with dust deposition and were influenced by humidity. The Hg isotope signatures in modern AMS gaseous Hg-0 and rainfall were similar to those in the Northern Hemisphere. The study also suggested that peat Hg isotope records might be a valid rainfall indicator.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Forestry
Tahti Pohjanmies, Anni Jaskova, Juha-Pekka Hotanen, Outi Manninen, Maija Salemaa, Anne Tolvanen, Paivi Merila
Summary: Boreal forests in Finland are rich in non-timber forest products, with approximately 200 wild plant species documented for their nutritional uses. This study analyzed the richness and abundance of edible wild plants in Finnish forests and found that habitat characteristics, such as site fertility and stand density, are key determinants of overall edible plant provisioning. The effects of stand characteristics and management on edible plant richness and abundance may be complex, and further analysis at the species level is needed to understand how to support edible plant provisioning in managed forests.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Environmental Sciences
Olga V. Churakova (Sidorova), Trevor J. Porter, Mikhail S. Zharkov, Marina Fonti, Valentin V. Barinov, Anna Taynik, Alexander Kirdyanov, Anastasya A. Knorre, Martin Wegmann, Tatyana Trushkina, Nataly N. Koshurnikova, Eugene A. Vaganov, Vladimir S. Myglan, Rolf T. W. Siegwolf, Matthias Saurer
Summary: This study analyzed stable isotopes in tree rings from Canada and found that summer air temperature plays a crucial role in determining tree ring isotope variability. The study also identified the effects of precipitation, relative humidity, vapor pressure deficit, and sunshine duration on tree ring isotopes. By combining multiple stable isotopes in tree ring studies, a comprehensive description of climate variability in boreal regions can be achieved.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Forestry
Linsheng Wen, Yun Peng, Wenping Deng, Yuanqiu Liu, Tianjun Bai, Qin Zou, Xiaojun Liu, Ling Zhang, Guodong Jia
Summary: This study used stable isotopes to investigate the water uptake patterns of plants in a Pinus taiwanensis community. The results showed that the main water sources of plants varied with soil water content, and different species had different preferences for the depth of water uptake. The findings suggest that dominant woody plants in this community have a flexible water uptake strategy and may face competition under future water-limited conditions caused by climate change.
Article
Environmental Sciences
Xun Wang, Wei Yuan, Che-Jen Lin, Dingyong Wang, Ji Luo, Jicheng Xia, Wei Zhang, Feiyue Wang, Xinbin Feng
Summary: This study investigates mercury accumulation in alpine permafrost regions of the Qinghai-Tibet Plateau. The results show a transition from foliage to root uptake of mercury as elevation increases, with root uptake being the dominant pathway in high-altitude regions. The findings suggest that harsh climate conditions may inhibit foliage growth and promote lateral root growth, leading to higher mercury accumulation through root uptake.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Ecology
Amber J. Hill, Todd E. Dawson, Avraham Dody, Shimon Rachmilevitch
Summary: This study investigated how desert plants utilize dew water using an isotopic water tracer approach. The results showed that different plant species have varying degrees of dew water uptake, with evidence of foliar uptake capacity varying depending on microenvironmental conditions.
Article
Engineering, Environmental
Bo Wang, Wei Yuan, Xun Wang, Kai Li, Che-Jen Lin, Ping Li, Zhiyun Lu, Xinbin Feng, Jonas Sommar
Summary: This study presents, for the first time, a record of whole ecosystem Hg0 flux over an evergreen hardwood forest using the relaxed eddy accumulation technique. The findings suggest that the subtropical montane forest acts as a large and continuous sink of atmospheric Hg0.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Sirkku Manninen, Vitali Zverev, Mikhail Kozlov
Summary: Long-term exposure to primary air pollutants can alter the structure and functioning of forest ecosystems, affecting C and N cycling.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Ecology
Melanie Hahn, Suzanne Robin Jacobs, Lutz Breuer, Mariana C. Rufino, David Windhorst
Summary: Ecohydrological processes in tropical rainforests are not well understood, with contradictory results in existing studies. Our research in a tropical montane forest in Kenya identified individual tree differences in water uptake but no consistent species-specific or small-scale spatiotemporal patterns, highlighting the importance of considering lateral variability of soil water isotopes for accurate modeling. Further research on water flux processes in forest ecosystems is needed to improve the validity and comparability of mixing model results.
Article
Geochemistry & Geophysics
Danae Guiserix, Emmanuelle Albalat, Henriette Ueckermann, Priyanka Davechand, Linda M. Iaccheri, Grant Bybee, Shaw Badenhorst, Vincent Balter
Summary: Radiogenic strontium isotopes (Sr-87/Sr-86) are a useful tool for investigating migration and landscape use. The study shows that the Sr-88/Sr-86 ratio may reveal unknown dietary and physiological information. Furthermore, the delta Sr-88 values in tooth enamel can differentiate between plants and herbivores, but the distinction between herbivores and carnivores requires further research.
Article
Environmental Sciences
Chaoyue Chen, Jen-How Huang, Katrin Meusburger, Kai Li, Xuewu Fu, Jorg Rinklebe, Christine Alewell, Xinbin Feng
Summary: By investigating the different histories of Hg deposition in two different locations, this study found that atmospheric deposition influences Hg dynamics in forest soil profiles. Both sites had similar Hg fluxes in bulk precipitation, and the soil profiles acted as sinks for atmospherically deposited Hg. The vertical distribution pattern of Hg was influenced by humus form and soil type.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Marianna Pinzone, Alice Cransveld, Emmanuel Tessier, Sylvain Berail, Joseph Schnitzler, Krishna Das, David Amouroux
Summary: This study reveals internal demethylation of methylmercury in European seabass and distinctive isotopic fractionation in Black Sea seabass. A multi-tissue approach proves to be effective in analyzing mercury sourcing and metabolism in marine fish.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Yanju Ma, Keith A. Hobson, Kevin J. Kardynal, Christopher G. Guglielmo, Brian A. Branfireun
Summary: Migratory songbirds breeding in the Canadian Boreal forest are exposed to mercury, with exposure levels depending on various factors. A Canada-wide dataset of nearly 2000 migratory songbirds showed a clear geographic gradient in feather mercury concentrations and dietary guild as a strong predictor of feather mercury levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geochemistry & Geophysics
Guitao Shi, Hongmei Ma, Zhuoyi Zhu, Zhengyi Hu, Zhenlou Chen, Su Jiang, Chunlei An, Jinhai Yu, Tianming Ma, Yuansheng Li, Bo Sun, Meredith G. Hastings
Summary: The study found that atmospheric nitrate is mainly concentrated on intermediate size particles, with much higher concentrations observed in the northern hemisphere compared to high southern latitudes. Isotope analysis indicated that elevated atmospheric nitrate in coastal areas is associated with human activities, while in high southern latitudes, it is influenced by precursor Antarctic snowpack emissions.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Forestry
Ting Wang, Qing Xu, Beibei Zhang, Deqiang Gao, Ying Zhang, Ranran Ren, Jing Jiang
Summary: This study investigated the water uptake patterns of Pinus massoniana under different forest management measures, revealing that light-intensity thinning may optimize the water use strategies of the tree species to cope with changing precipitation patterns. Variations in water uptake patterns among treatments were mainly attributed to differences in tree properties.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Engineering, Environmental
Yuxin Sun, Amila O. De Silva, Kyra A. St Pierre, Derek C. G. Muir, Christine Spencer, Igor Lehnherr, John J. MacInnis
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Min Li, Hai-Long Liu, Fei Dang, Holger Hintelmann, Bin Yin, Dongmei Zhou
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Avneet Ghotra, Igor Lehnherr, Trevor J. Porter, Michael F. J. Pisaric
ACS EARTH AND SPACE CHEMISTRY
(2020)
Article
Biology
Neal Michelutti, Marianne S. V. Douglas, Dermot Antoniades, Igor Lehnherr, Vincent L. St Louis, Kyra St Pierre, Derek C. G. Muir, Gregg Brunskill, John P. Smol
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2020)
Article
Environmental Sciences
Anna K. Karjalainen, Johanna Salmelin, Brian Dimock, Holger Hintelmann
WATER AIR AND SOIL POLLUTION
(2020)
Article
Chemistry, Multidisciplinary
Kristin M. Eccles, Hamnah Majeed, Trevor J. Porter, Igor Lehnherr
ACS EARTH AND SPACE CHEMISTRY
(2020)
Article
Environmental Sciences
Sydney P. Clackett, Trevor J. Porter, Igor Lehnherr
Summary: The study utilized tree-ring Hg records to investigate the impact of mining-related Hg-0 emissions on the local atmosphere and environment at a historic Klondike gold-mining site. The tree-ring Hg record revealed significantly elevated atmospheric Hg-0 concentrations during the period of mining activities at this site compared to a control site.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Stephanie Varty, Igor Lehnherr, Kyra St Pierre, Jane Kirk, Victoria Wisniewski
Summary: The presence of toxic methylmercury in Arctic freshwater ecosystems and foodwebs is a concern for northern Indigenous people. Research shows the existence of methylation hotspots and seasonal differences in MeHg cycling in the Arctic ecosystems. Changes in ice-cover duration and increased thaw and surface water flow are expected to affect MeHg production and bioaccumulation in lakes, as well as downstream transport of MeHg.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Beatriz Bento, Holger Hintelmann, Margarida Correia dos Santos, Rute Cesario, Joao Canario
Summary: Research found that Deception Island in Antarctica is an active volcano, with volcanic eruptions being one of the reasons for high mercury concentrations. Higher levels of total mercury and monomethylmercury were found in this ecosystem, with biotic methylation rates in water being significantly higher and abiotic methylation playing an important role.
MARINE POLLUTION BULLETIN
(2021)
Editorial Material
Multidisciplinary Sciences
Vincent L. St Louis, Sherry L. Schiff, Carol A. Kelly
Article
Multidisciplinary Sciences
Paul J. Blanchfield, John W. M. Rudd, Lee E. Hrenchuk, Marc Amyot, Christopher L. Babiarz, Ken G. Beaty, R. A. Drew Bodaly, Brian A. Branfireun, Cynthia C. Gilmour, Jennifer A. Graydon, Britt D. Hall, Reed C. Harris, Andrew Heyes, Holger Hintelmann, James P. Hurley, Carol A. Kelly, David P. Krabbenhoft, Steve E. Lindberg, Robert P. Mason, Michael J. Paterson, Cheryl L. Podemski, Ken A. Sandilands, George R. Southworth, Vincent L. St Louis, Lori S. Tate, Michael T. Tate
Summary: The 15-year experiment conducted to reduce fish MeHg concentrations by decreasing Hg additions to a boreal lake and its watershed demonstrated that any reduction in Hg loadings to lakes, whether from direct deposition or runoff, will have immediate benefits to fish consumers.
Article
Environmental Sciences
Audrey Campeau, Karin Eklof, Anne L. Soerensen, Staffan Akerblom, Shengliu Yuan, Holger Hintelmann, Magdalena Bieroza, Stephan Kohler, Christian Zdanowicz
Summary: The Arctic environment contains a complex mosaic of mercury and carbon reservoirs, some of which are destabilizing rapidly due to climate warming. Measurements and analyses of mercury and carbon concentrations in river water revealed major differences in the sources of particulate and dissolved riverine mercury, despite a common positive association with older material.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Analytical
John MacInnis, Amila O. De Silva, Igor Lehnherr, Derek C. G. Muir, Kyra A. St Pierre, Vincent L. St Louis, Christine Spencer
Summary: The study found that melting snow and ice increased PFAS concentrations in Lake Hazen, while river water from non-glacial freshwater continuum was identified as a major source of contamination. Additionally, the distribution of PFAS in vegetation and soil changed as water flowed downstream.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2022)
Article
Chemistry, Analytical
Amila O. De Silva, Cora J. Young, Christine Spencer, Derek C. G. Muir, Martin Sharp, Igor Lehnherr, Alison Criscitiello
Summary: This study reports the detection of organophosphate esters (OPEs) in ice cores from the Canadian high Arctic, indicating that the cryosphere can serve as a reservoir for these substances and support their potential long-range transport.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2023)