Article
Agronomy
Tairui Liu, Fujing Bo, Zhijie Tan, Hu Ruyuan, Xuming Ren, Pingan Wang, Jinping Guo, Yunxiang Zhang, Qiwu Wang
Summary: Investigations into the nutrient contents and changes in the stoichiometry and nutrient resorption strategies of different original forests during their development are important for the establishment of healthy forest ecosystems. This study compared natural Larix principisrupprechtii forests and plantations and found differences in nutrient accumulation and utilization strategies, suggesting that natural forests have a greater ability to adapt to different nutrient compositions and concentrations.
Article
Forestry
Ashfaq Ali, Majid Hussain, Saqib Ali, Kashif Akhtar, Mamoona Wali Muhammad, Ahmad Zamir, Arshad Ali, Syed Moazzam Nizami, Bilal Ahmad, Matthew Tom Harrison, Shah Fahad, Zhixiang Zhou, Shanjun Yi
Summary: The stoichiometric ratios of carbon, nitrogen, and phosphorus in Masson pine plantations are influenced by stand age, with nutrient demands and soil quality improving with stand development.
Article
Plant Sciences
Harshita Singh, Pallavi Singh, Shashi Bhushan Agrawal, Madhoolika Agrawal
Summary: This study investigated the effects of different concentrations of foliar particulate matter on the physiology, nutrient stoichiometry, allocation pattern, and re-translocation rates of different tree species. Significant differences were observed in nutrient concentrations and re-translocation rates between evergreen and deciduous species. The photosynthetic rate declined with increased foliar deposition of particulate matter. The nutrient stoichiometry revealed that deciduous species were more tolerant, while re-translocation efficiency was highest for semi-evergreen species.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Briana L. Jasinski, Rebecca E. Hewitt, Marguerite Mauritz, Samantha N. Miller, Edward A. G. Schuur, Meghan A. Taylor, Xanthe J. Walker, Michelle C. Mack
Summary: Thawing permafrost in northern latitudes affects plant utilization of nitrogen, phosphorus, and other nutrients. The study found that deeply rooted species decrease foliar N:P ratios, while species with shallower roots increase foliar N:P ratios. Winter warming and natural thermokarst gradient experiments showed that wet or deeply thawed areas lead to increased foliar nutrient concentrations and canopy biomass. Overall, as permafrost thaws deeper and water table level rises, plants may become more nitrogen-limited.
JOURNAL OF ECOLOGY
(2022)
Article
Forestry
Guancheng Liu, Yajuan Xing, Qinggui Wang, Lei Wang, Yue Feng, Zhiwei Yin, Xiaochun Wang, Tong Liu
Summary: The study found that long-term nitrogen addition had significant effects on nutrient uptake and distribution in Larix gmelinii in a boreal forest, including reducing soil pH, changing soil nitrogen availability, increasing nitrogen content in plant tissues, etc. Furthermore, nitrogen addition led to an increased investment in belowground parts and adjustment in carbon distribution to meet phosphorus demand in Larix gmelinii.
EUROPEAN JOURNAL OF FOREST RESEARCH
(2021)
Article
Plant Sciences
Ziyang Peng, Yuntao Wu, Lulu Guo, Lu Yang, Bin Wang, Xin Wang, Weixing Liu, Yanjun Su, Jin Wu, Lingli Liu
Summary: Understanding how plants adapt to spatially heterogeneous phosphorus (P) supply is crucial for studying the impact of environmental changes on ecosystem productivity. The relative P limitation to plants was found to be higher in tropical forests than in temperate forests, but varied among species and within sites. Ecosystems develop a coupled aboveground-belowground strategy to maintain P supply and N : P stoichiometric balance under P-limitation.
Article
Plant Sciences
Clara Vega, Chia-Ju Ellen Chi, Victoria Fernandez, Juergen Burkhardt
Summary: Aerosols can contribute to plant nutrition via foliar uptake, especially at night when humidity is high. Although stomata tend to be closed at night, plants can benefit from nocturnal stomatal opening to increase humidity and facilitate nutrient uptake. This hypothesis was supported by experiments on P-deficient soil.
Article
Agronomy
Jun Wang, Wei Dai, Kaikai Fang, Hui Gao, Zhimin Sha, Linkui Cao
Summary: The combination of chemical fertilizer and organic fertilizer has a positive effect on the stability and nutrient accumulation of soil aggregates in greenhouse dryland.
Article
Environmental Sciences
Xin Liu, Dingming Zhang, Huijun Wu, James J. Elser, Zengwei Yuan
Summary: Over the past 15 years in China, there has been excessive input of nitrogen and phosphorus, resulting in a significant decrease in the nitrogen to phosphorus ratio. While nitrogen use efficiency has increased, most crops have shown a decreasing trend in phosphorus use efficiency. This highlights the need for further exploration in phosphorus management for sustainable agriculture.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agronomy
Wenqi He, Hongyan Liu, Liang Shi, Mei Zhou, Yang Qi, Feng Liu, Xinrong Zhu, Pengwu Zhao, Changlin Xiang, Yang Shu
Summary: The accumulation of nutrient elements and changes in ecological stoichiometry in Larix sibirica were influenced by climate and soil factors. Decreasing mean annual precipitation resulted in an increase in nitrogen and phosphorus contents, a decrease in C:N and C:P ratios in leaves, and a decrease in C:N ratio in branches. Branch stoichiometry showed a stronger response than leaf stoichiometry.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Engineering, Marine
Peng Zhang, Siying Wu, Menghan Xu, Xiaojun Luo, Xi Peng, Chaoxing Ren, Jibiao Zhang
Summary: Land-source inputs have led to the deterioration of water quality, eutrophication, and algae blooms in Tieshan Bay coastal water. However, there is limited understanding of nutrient patterns, stoichiometry, and eutrophication assessment in this area. A study conducted in 2021 revealed high concentrations of dissolved inorganic nitrogen, dissolved inorganic phosphorus, and chemical oxygen demand in Tieshan Bay, with a significant contribution from COD to eutrophication. Organic pollution was observed in certain areas, and nutrient concentrations showed a significant relationship with salinity. Land-based source management is crucial to achieve seawater quality targets and mitigate eutrophication in the region.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Horticulture
Shiwei Zheng, Ting Bian, Shuang Wang, Xiaolan Zhang, Xiao Li, Yongyong Zhang, Hongdan Fu, Zhouping Sun
Summary: The study found that under continuous cropping conditions, imbalanced soil nutrients result in decoupling of phosphorus utilization from nitrogen and potassium utilization in the leaves.
Article
Ecology
Eric B. Borth, Heather D. Alexander, Nikita Zimov, Ryan W. McEwan
Summary: The goal of this project was to assess sources of regeneration limitation in L.cajanderi forests in northeastern Siberia. We focused on the regeneration potential of stands varying in tree density and analyzing seedling establishment patterns in relation to microsite conditions. The results showed that tree density was negatively related to cone production, and moderate density stands produced more cones. Safe sites in the landscape facilitated L.cajanderi seedling establishment, particularly in lowland areas. These findings suggest complex linkages between forest density, propagule availability, fire, safe sight colonization, and seedling establishment in the understudied L.cajanderi forests of the Siberian Arctic.
Article
Geosciences, Multidisciplinary
Ran Tong, Benzhi Zhou, Lina Jiang, Xiaogai Ge, Yonghui Cao
Summary: Understanding leaf carbon, nitrogen, and phosphorus stoichiometry at large geographical scales can help reveal plant adaptation strategies to climate change. Research in subtropical China showed different spatial patterns of leaf nutrient concentrations and resorption efficiency, driven mainly by temperature and soil phosphorus levels, while forest development impacted leaf stoichiometry but not nutrient resorption in mid-aged stands.
Article
Agronomy
Qijuan Hu, Maoyin Sheng, Yixin Bai, Yin Jie, Hailong Xiao
Summary: The study found that in the karst rocky desertification ecosystem of Southwest China, plant species have different nutrient requirements, with higher altitude Broussonetia papyrifera plants being more restricted by phosphorus. B. papyrifera showed significant responses of C, N, and P stoichiometric characteristics to altitudinal gradients.
Article
Environmental Sciences
William H. McDowell
Summary: Dissolved organic matter (DOM) is a heterogeneous mixture of organic compounds that is produced through microbial degradation and abiotic leaching, and it plays an important role in aquatic ecology and watershed management. The challenges in studying DOM include monitoring long-term changes, using sensors for short-term dynamics, understanding its role in the carbon cycle and greenhouse gas evasion, and exploring its evolutionary significance in various environments.
Article
Environmental Sciences
Allison M. Herreid, Carla Lopez Lloreda, Adam S. Wymore, Jody D. Potter, William H. McDowell
Summary: This study uses data from eight tropical watersheds in Puerto Rico to show that rivers in these watersheds are sources of greenhouse gases (GHGs) to the atmosphere. The concentrations of carbon dioxide (CO2) and nitrous oxide (N2O) are influenced by surrounding inputs, while the concentration of methane (CH4) is related to in-stream oxygen availability and lithology.
Article
Environmental Sciences
Ivan V. Krickov, Artem G. Lim, Vladimir P. Shevchenko, Dina P. Starodymova, Olga M. Dara, Yuri Kolesnichenko, Dmitri O. Zinchenko, Sergey N. Vorobyev, Oleg S. Pokrovsky
Summary: Despite the lack of knowledge about the mineralogical control on major and trace element speciation in river suspended matter (RSM), this study examines the mineral and chemical composition of RSM in a boreal river in Western Siberia and its tributaries. The results show seasonal variations in RSM concentration and mineral phases, with quartz, albite, smectite, and chlorite increasing with discharge, and illite and calcite showing no effect from seasons or discharge. Elemental composition also varied seasonally, with sodium, K, Si, Al, trivalent, and tetravalent hydrolysates increasing with discharge, while alkaline-earth metals, P, Mn, and As decreased. The study highlights the importance of considering seasonal variations and understudied winter baseflow RSM sources.
Article
Geochemistry & Geophysics
Christian Grimm, Agnes Feurtet-Mazel, Oleg S. Pokrovsky, Eric H. Oelkers
Summary: Riverine particulates play a crucial role in transporting essential nutrients and affecting organic carbon burial in ocean margins. Microcosm experiments demonstrate the positive impact of riverine particulate material on diatom growth, as well as its role in organic carbon burial through aggregation and sedimentation of phytoplankton. The supply of riverine particulate material is highly sensitive to climate change and contributes significantly to regulating atmospheric CO2 concentrations.
Article
Environmental Sciences
Oxana V. Masyagina, Anastasia I. Matvienko, Tatiana V. Ponomareva, Irina D. Grodnitskaya, Elizaveta V. Sideleva, Valeriy K. Kadutskiy, Svetlana V. Prudnikova, Viktoria S. Bezbido, Kristina A. Kudryavtseva, Svetlana Y. Evgrafova
Summary: This study examined the effects of diesel fuel pollution on permafrost carbon and soil microbiota in the Arctic region. The results showed that different soil types had varying responses to diesel fuel, with an acceleration of carbon loss from the slow carbon pool. Diesel fuel also had impacts on microbial activity and community structure. Certain bacterial species were recommended for bioremediation to mitigate the contamination of permafrost soils under climate change.
ENVIRONMENTAL POLLUTION
(2023)
Article
Plant Sciences
Mathias Mayer, Bradley Matthews, Hans Sanden, Klaus Katzensteiner, Frank Hagedorn, Markus Gorfer, Harald Berger, Torsten W. Berger, Douglas L. Godbold, Boris Rewald
Summary: Ectomycorrhizal fungi can either accelerate or decelerate decomposition of organic matter depending on soil fertility. This study suggests that under low fertility, ECM fungi slow down decomposition, while under high fertility, they speed it up.
Article
Agronomy
Emily F. Solly, Astrid C. H. Jaeger, Matti Barthel, Roland A. Werner, Alois Zurcher, Frank Hagedorn, Johan Six, Martin Hartmann
Summary: This study found that with increasing water limitation, trees allocated more biomass belowground at the expense of aboveground growth. Moderate levels of water limitation had little effect on the uptake of C-13 label and the transit time of C from needles to the soil pore CO2. However, more severe water limitation increased the fraction of C-13 label allocated to fine roots and soil fungi while less (CO2)-C-13 was readily respired from the soil.
Article
Multidisciplinary Sciences
Jakub Hruska, Filip Oulehle, Tomas Chuman, Tomas Kolar, Michal Rybnicek, Miroslav Trnka, William H. McDowell
Summary: In the past 40 years, the forests of central Europe have undergone significant transitions due to improved air quality. Air pollution, particularly high concentrations of SO2 and acidic deposition, plays a crucial role in driving forest health. Extensive soil acidification occurred in the highly polluted Black Triangle region, but there has been a decline in atmospheric acid deposition and SO2 concentrations. The recovery of tree ring width is closely linked to the trajectory of SO2 concentrations or sulfur deposition.
Article
Chemistry, Multidisciplinary
Irina S. S. Ivanova, Liudmila S. S. Shirokova, Jean-Luc Rols, Oleg S. S. Pokrovsky
Summary: This study focuses on the development of a unified experimental protocol for studying the freezing and thawing of organic-rich natural waters under laboratory conditions. It aims to better understand the changes in solution chemical composition during ice formation and the behavior of dissolved organic carbon and trace elements in permafrost peatlands.
APPLIED SCIENCES-BASEL
(2023)
Article
Biochemistry & Molecular Biology
Nives Kovac, Jerome Viers, Jadran Faganeli, Oliver Bajt, Oleg S. Pokrovsky
Summary: Among the various exometabolitic effects of marine microorganisms, massive mucilage events in the coastal zones of temperate and tropical seas are the most spectacular and environmentally important. Abundant mucilage material in the form of aggregates appears in late spring/early summer in the water column of the Adriatic Sea. These macroaggregate biopolymers originate mainly from plankton exometabolites, with both autochthonous and allochthonous components, and strongly impact the tourism, fisheries, and economy of coastal countries.
Article
Forestry
Kseniia A. Tabakova, Alberto Arzac, Marco Carrer, Eugene A. Vaganov, Alexander Kirdyanov
Summary: Russia, with its extensive forested area, plays a significant role in global climate, carbon, and water dynamics. Dendroanatomical studies in Russia offer valuable insights into the impact of climate change on a global scale.
Article
Environmental Sciences
Andrey Novoselov, Alexandr Konstantinov, Elizaveta Konstantinova, Yulia Simakova, Artem Lim, Alina Kurasova, Sergey Loiko, Oleg S. Pokrovsky
Summary: This study focuses on the inorganic carbon cycle in semiarid lakes of Central Eurasia, examining the hydrochemical variability and the formation of authigenic carbonate minerals in lake sediments. The pH and TDS of lake water are primarily controlled by the lithological and climatic context of the lake watershed. The study also identifies several common authigenic carbonates in lake sediments, such as calcite, aragonite, Mg-calcite, dolomite, and hydromagnesite. The findings of this study can be applied to a wider range of arid and semiarid lakes to understand the current state and potential modifications of the inorganic carbon cycle.
Article
Engineering, Geological
Tatiana V. Raudina, Sergei V. Smirnov, Georgyi I. Istigechev, Oleg S. Pokrovsky
Summary: Dissolved organic matter is a critical component of carbon cycles in terrestrial and aquatic ecosystems, and its dynamics play a crucial role in local and global carbon cycling. This study investigated the removal rate of dissolved organic matter and dissolved metals in water samples from the southern taiga bog complex in Western Siberia, and found that photodegradation has an impact on the composition of dissolved organic substances and the behavior of metals.
BULLETIN OF THE TOMSK POLYTECHNIC UNIVERSITY-GEO ASSETS ENGINEERING
(2023)
Article
Environmental Studies
Anastasia Makhnykina, Alexey Panov, Anatoly Prokushkin
Summary: Boreal forest ecosystems are vulnerable to climate change and may switch from being carbon sinks to emitting atmospheric carbon. Wildfires play a significant role in ecosystem modification and functioning. The effect of wildfires on soil CO2 emission rates was studied using a fire chronosequence and it was found that the rates varied based on the successional stage and were influenced by factors such as soil moisture and temperature.
Article
Environmental Sciences
Desneiges S. Murray, Edom Moges, Laurel Larsen, Michelle D. Shattuck, William H. Mcdowell, Adam S. Wymore
Summary: This study investigates the impact of nitrogen wet deposition on watershed biogeochemical cycling using the transfer entropy method. The results show that wet deposition N has a lagged nonlinear effect on river N, with river DON being mostly influenced by wet deposition N. Additionally, the processes of mineralization and assimilation display stronger synchrony than nitrification.
WATER RESOURCES RESEARCH
(2023)
