Article
Environmental Sciences
Geshere Abdisa Gurmesa, Jiangming Mo, Per Gundersen, Qinggong Mao, Yunting Fang, Feifei Zhu, Xiankai Lu
Summary: The study found that a human-disturbed pine plantation in southern China retained about 58% of deposited nitrogen compared to an adjacent old-growth forest which retained 72%. The difference in retention was attributed to previous disturbance, mainly understory and litter harvesting in the pine plantation. The results suggest that plantation forests experiencing human-disturbance and chronic nitrogen deposition have lower nitrogen retention compared to old-growth forests, which may lead to risks of hydrological nitrogen losses, soil acidification, and freshwater pollution.
Article
Forestry
Xianyu Yao, Uromi Manage Goodale, Mei Yang, Liangning Liao, Sufang Yu, Shengqiang Wang, Shaoming Ye
Summary: N-2-fixing species play a crucial role in mixed-plantations as they improve stand productivity. The bidirectional N transfer between Eucalyptus and Dalbergia odorifera is an important dynamic process, significantly affecting the nitrogen content and dry matter yield of Eucalyptus. Intercropping Eucalyptus with leguminous plants like D. odorifera is a successful management practice due to the substantial nitrogen transfer that enhances Eucalyptus productivity.
Article
Forestry
Chen Chen, Yilin Weng, Kangting Huang, Xiaolong Chen, Hui Li, Yabin Tang, Lingyue Zhu, Jiachen Wang, Junyu Zhao, Lijun Chen, Lichao Wu, Chunjun Xie, Jian Tang
Summary: Retained residues in high-intensity management eucalypt plantations can contribute significant amounts of nutrients to the soil, but the effects of different residue treatments on decomposition are unclear. This study investigated residue decomposition and nutrient release under different treatments in a Eucalyptus plantation in China. Results showed that decomposition rates varied with residue type and treatment, and decomposition of leaves was faster than that of twigs and branches. Nutrient release was faster in treatments where residues were retained and spread evenly on the soil surface. Appropriate fertilization is still needed in Eucalyptus plantations.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Forestry
Tanay Bose, Maria Vivas, Bernard Slippers, Jolanda Roux, Martin Kemler, Dominik Begerow, Frederick Witfeld, Andreas Brachmann, Steven Dovey, Michael J. Wingfield
Summary: Retaining post-harvest residues in South African plantation soil can improve the diversity of beneficial soil fungi. This research demonstrates that retaining post-harvest residues is important for improving tree and soil health by enhancing the diversity of beneficial fungi in plantation soils.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Limnology
Megan E. Duffy, Jacquelyn A. Neibauer, Jamee Adams, Rachel A. Lundeen, Gabrielle Rocap, Anitra E. Ingalls, Clara A. Fuchsman, Richard G. Keil
Summary: This study identified peptides in suspended and sinking particles from the oxygen-deficient zone in the eastern tropical North Pacific and in a culture of the cyanobacterium Prochlorococcus using a de novo-discovery approach. The results show that de novo peptides are taxonomically specific and can enhance database-driven methods. The analysis of the particles also revealed the presence of fungal proteins in deep sinking particles, suggesting the important role of fungi in marine organic matter cycling. Additionally, observations were made on the post-translationally modified cyanobacterial peptides in the sediment trap sample, indicating the association between cellular location and early preservation in the detrital pool. The presence of modified amino acids in sinking and suspended particles suggests that extracellular protein degradation contributes to the pools of refractory organic nitrogen.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Agronomy
Osvaldo Salazar, Renato Diaz, Adriana Nario, Ximena Videla, Maria Alonso-Ayuso, Miguel Quemada
Summary: In the Mediterranean area of Chile, replacing traditional autumn-winter fallow with cover crops with optimal N dose has been found to improve N fertilizer efficiency and reduce nitrogen leaching. This strategy has positive advantages in soil and N management, helping to reduce diffuse pollution of surface and groundwater bodies.
Article
Multidisciplinary Sciences
Lin Zhang, Zongfu Chen, Qinzhan Wu, Kangting Huang, Jianke Wen, Hui Li, Lingyue Zhu, Yabin Tang, Lijun Chen, Lichao Wu
Summary: This study examined the impact of different slash disposal methods on soil qualities. The results showed that the indicators of burning forest and no-burning forest were generally lower than those of the control group, but they differed in terms of soil properties. Burning forest can rapidly improve soil quality, while no-burning forest is more sustainable for the eucalyptus plantation.
SCIENTIFIC REPORTS
(2022)
Article
Forestry
Raphael Oliveira de Melo, Aymbire Angeletti da Fonseca, Nairam Felix de Barros, Raphael Braganca Alves Fernandes, Rafael da Silva Teixeira, Iago Nery Melo, Ricardo Previdente Martins
Summary: This study evaluated the impacts of eucalyptus harvesting on soil physical attributes and the potential of different residue management techniques to reduce soil compaction. The results suggest that retaining harvest residues and litter can help minimize increases in soil density and penetration resistance caused by machine traffic during tillage operations.
JOURNAL OF FORESTRY RESEARCH
(2022)
Article
Ecology
Gabriel W. D. Ferreira, Fernanda C. C. Oliveira, Emanuelle M. B. Soares, Jorg Schnecker, Ivo R. Silva, A. Stuart Grandy
Summary: Eucalyptus plantations in Brazil have rapidly accumulated carbon in their biomass, but long-term sustainability relies on sustaining soil organic matter stocks. Managing harvest residues, especially including bark, can enhance soil organic matter retention and reduce potential soil carbon mineralization.
Article
Biodiversity Conservation
Jinhua Mao, Qinggong Mao, Per Gundersen, Geshere A. Gurmesa, Wei Zhang, Juan Huang, Senhao Wang, Andi Li, Yufang Wang, Yabing Guo, Rongzhen Liu, Jiangming Mo, Mianhai Zheng
Summary: Legume-dominated forests have a strong capacity to retain deposited nitrogen, with 75% of labeled nitrogen recovered in plants and soils. This high nitrogen retention is mainly driven by uptake by legume trees, indicating a higher nitrogen-demand compared to non-legume trees. Mineral soil is the major sink for deposited nitrogen in both forest types, regardless of nitrogen addition.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Environmental Sciences
Xiuli Yan, Jin-Yu Terence Yang, Min Nina Xu, Hongjie Wang, Minhan Dai, Shuh-Ji Kao
Summary: Information on the sources and transformations of particulate organic N (PN) and dissolved organic N (DON) at the coastal interface remains insufficient due to technological difficulties and complicated features of intensive physical mixing and rapid biological activities. The study investigated the spatial distribution of concentrations and isotopic compositions of PN and DON in the Changjiang plume during the summer flood period, revealing nonconservative DON behaviors and active transformations between the DON and PN pools.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Forestry
Xu Wang, Shenghua Gao, Jiquan Chen, Zengwang Yao, Xudong Zhang
Summary: This study investigates the impacts of different residue manipulations on soil greenhouse gas (GHG) fluxes in a Chinese fir plantation. The results show that residue burning increases soil CO2 emissions, residue harvest slightly increases CO2 emissions in the first year but decreases them in the second year, and mulching after crushing treatment increases soil CO2 and N2O emissions. These findings are important for accurately estimating carbon and nitrogen fluxes in plantations.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Geosciences, Multidisciplinary
Na Li, Ruiying Chang, Hui Jiang, Akash Tariq, Jordi Sardans, Josep Penuelas, Feng Sun, Xingmei Zhou
Summary: The experiment on grazing-exclusion and climate warming effects in alpine meadows revealed that grazing-exclusion significantly decreased potential nitrogen mineralization, and climate warming could amplify the adverse effects of grazing-exclusion. Light-intensity grazing was beneficial for increasing soil enzyme activity and nitrogen mineralization in alpine meadows, providing important guidance for sustainable grazing management in the face of climate change.
Article
Environmental Sciences
You-You Hao, Zhuo-Yi Zhu, Fu-Tao Fang, Tihana Novak, Milan Cankovic, Enis Hrustic, Zrinka Ljubesic, Ming Li, Jin-Zhou Du, Rui-Feng Zhang, Blazenka Gasparovic
Summary: Estuaries play a crucial role in modifying the concentration and composition of riverine nutrients and organic matter, affecting the flux of these materials to coasts. The study of the Wenchang and Krka River estuaries highlights the significance of estuarine processes in removing nitrogen and assimilating organic materials, with implications for nutrient yields from eutrophic rivers in ocean studies.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Oksana Coban, Olivia Rasigraf, Anniek E. E. de Jong, Oliver Spott, Brad M. Bebout
Summary: This study evaluated the occurrence and rates of major nitrogen cycle processes in intact microbial mats from Elkhorn Slough and Baja California Sur using N-15-labeling techniques. The results showed differences in nitrogen cycling between Elkhorn Slough and Baja mats, with differences in ammonium assimilation rates and nitrate affinity. Additionally, low nitrogen fixation rates in Elkhorn Slough mats suggest other processes contribute to nitrogen availability in these ecosystems.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Didi Adisaputro, Philippe De Donato, Laurent Saint-Andre, Odile Barres, Catherine Galy, Gilles Nourrisson, Mederic Piedevache, Marion Derrien
Summary: This study highlights the importance of deep soil and groundwater in geological storage applications, investigates the seasonal variation of soil CO2 concentration, and finds that wind turbulence plays a significant role in driving deep soil CO2 transfer.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Melanie Court, Gregory van der Heijden, Pascale Louvat, Emile Bolou-Bi, Guillaume Caro, Julien Bouchez, Benoit Pollier, Serge Didier, Claude Nys, Laurent Saint-Andre, Arnaud Legout
Summary: The study found that dolomite-derived magnesium can replenish the topsoil exchangeable pools and improve tree nutrition in forest ecosystems where dolomitic lime was applied. On the other hand, liming with calcium carbonate may lead to changes in magnesium cycling and content after application, particularly to address low magnesium availability.
Article
Economics
Gabriela Demarchi, Julie Subervie, Fernando Palha Leite, Jean-Paul Laclau
Summary: The study shows that eucalypt farmers in Minas Gerais, Brazil are more inclined to adapt to drought by reducing the length of the eucalypt rotation, while reducing density is the least chosen option, indicating a potential underestimation of its benefits. The preference for reducing the length of the eucalypt rotation is particularly strong among the most vulnerable farmers in the sample, highlighting a clear segmentation in farmers' choice behavior.
FOREST POLICY AND ECONOMICS
(2021)
Article
Plant Sciences
Joannes Guillemot, Veronica Asensio, Bruno Bordron, Yann Nouvellon, Guerric le Maire, Jean-Pierre Bouillet, Jean-Christophe Domec, Juan Sinforiano Delgado Rojas, Cassio Hamilton Abreu-Junior, Patricia Battie-Laclau, Ivan Cornut, Amandine Germon, Jose Leonardo De Moraes Goncalves, Agnes Robin, Jean-Paul Laclau
Summary: The application of potassium fertilization in tropical plantations can increase tree growth, but it may also reduce the hydraulic compensation to growth, potentially increasing the risk of drought-induced dieback under climate change.
PLANT CELL AND ENVIRONMENT
(2021)
Review
Ecology
Laetitia Bernard, Isabelle Basile-Doelsch, Delphine Derrien, Nicolas Fanin, Sebastien Fontaine, Bertrand Guenet, Battle Karimi, Claire Marsden, Pierre-Alain Maron
Summary: The priming effect (PE) is a key mechanism contributing to the carbon balance of the soil ecosystem. Recent research has shown increased interest in understanding and studying this mechanism. Although there are still gaps in knowledge, progress has been made in deciphering the non-biological mechanisms underlying PE and identifying the microbial actors involved. However, including PE into mechanistic models remains challenging as the mechanisms are not fully understood.
FUNCTIONAL ECOLOGY
(2022)
Article
Environmental Sciences
Thibaut Perron, Aymard Kouakou, Charlotte Simon, Louis Mareschal, Gay Frederic, Mouman Soumahoro, Daouda Kouassi, Nancy Rakotondrazafy, Bruno Rapidel, Jean-Paul Laclau, Alain Brauman
Summary: This study assessed the effects of clear-cutting on soil functions and their restoration after replanting rubber trees. Clear-cutting and land preparation significantly disturbed carbon transformation, nutrient cycling, and structure maintenance functions. However, carbon transformation and structure maintenance functions were fully restored within 12 to 18 months after the disturbance when logging residues were applied. No restoration of nutrient cycling was observed over the study period. A legume cover crop improved the restoration of carbon transformation. There was a strong relationship between soil macrofauna diversity and soil health.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Forestry
Bruno Cesar Rossini, Jean-Marc Bouvet, Julien Frouin, Irae Amaral Guerrini, Talitha Casella Moreira de Freitas, Magali Ribeiro da Silva, Jean-Pierre Bouillet, Jean-Paul Laclau, Celso Luis Marino
Summary: In this study, we evaluated the differential expression of genes in leaf and xylem tissues for three Eucalyptus clones in the field using Illumina sequencing and compared four fertilization regimes. The results showed that the control fertilization regime performed significantly better in terms of tree height and circumference, but there were no differences between clones. Differential expression analysis revealed a large number of genes related to stress, transport, and transcription factors. Co-expression analysis showed significant correlations between gene expression and tree growth induced by fertilization regime.
TREE GENETICS & GENOMES
(2022)
Article
Environmental Sciences
Daniel Liptzin, Jens Boy, John L. Campbell, Nicholas Clarke, Jean-Paul Laclau, Roberto Godoy, Sherri L. Johnson, Klaus Kaiser, Gene E. Likens, Gunilla Pihl Karlsson, Daniel Markewitz, Michela Rogora, Stephen D. Sebestyen, James B. Shanley, Elena Vanguelova, Arne Verstraeten, Wolfgang Wilcke, Fred Worrall, William H. McDowell
Summary: Atmospheric deposition of dissolved organic carbon (DOC) plays an important role in the carbon cycle of terrestrial ecosystems. The concentration of DOC and precipitation are the key factors influencing the deposition of DOC, with higher concentrations observed in tropical regions. Seasonal variations in DOC concentration were observed, with higher concentrations during the growing season in temperate regions and during the dry season in tropical regions. Long-term data sets showed significant declines in DOC concentration, which may be attributed to decreases in anthropogenic emissions.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Forestry
Roger Chambi-Legoas, Mario Tomazello-Filho, Jean -Paul Laclau, Gilles Chaix
Summary: The objective of this study was to understand the interactive effects of K fertilization, water availability, and tree age on stem growth and xylem traits of E. grandis trees over a full rotation. The results showed that K fertilization increased tree growth rates but led to an interruption of growth during a severe drought in 2014. However, K fertilization had a positive effect on growth recovery following drought. The main changes in xylem traits during drought occurred in vessel characteristics.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Review
Agronomy
Delphine Derrien, Pierre Barre, Isabelle Basile-Doelsch, Lauric Cecillon, Abad Chabbi, Alexandra Creme, Sebastien Fontaine, Ludovic Henneron, Noemie Janot, Gwenaelle Lashermes, Katell Quenea, Frederic Rees, Marie-France Dignac
Summary: There is currently a debate about organic carbon storage in soil and its potential benefits for agriculture and the climate. This article provides a balanced description of conflicting scientific opinions on soil carbon storage and discusses how the scientific community can support decision-making despite the controversy. The article also examines the advantages and limitations of big data management and modeling in linking scientific theories with stakeholder actions.
AGRONOMY FOR SUSTAINABLE DEVELOPMENT
(2023)
Article
Forestry
Alberto Caldeira, Alex Vladimir Krushe, Louis Mareschal, Paulo da Silva, Yann Nouvellon, Otavio Campoe, Jose Luiz Stape, Alexandra Montebelo, Greta Formaglio, Guerric le Maire, Joannes Guillemot, Jacques Ranger, Jean-Paul Laclau
Summary: The sustainable management of highly productive eucalypt plantations requires the use of fertilizers to balance nutrient exports. Our study aimed to assess the impact of management practices in these plantations on nutrient losses through deep leaching. We found that while concentrations of certain ions increased significantly after clear-cutting and fertilizer application, leaching fluxes remained relatively low throughout the rotation.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Forestry
Greta Formaglio, Alex Vladimir Krusche, Louis Mareschal, Jean-Pierre Bouillet, Jose Leonardo de Moraes Gonsalves, Yann Nouvellon, Juan Sinforiano Delgado-Rojas, Alexandra Montebelo, Jacques Ranger, Jean -Paul Laclau
Summary: Planting nitrogen-fixing species can increase nitrogen availability for tree growth without causing large leaching losses, making mixed plantations with these trees valuable. Our study in São Paulo, Brazil, evaluated nutrient fluxes in soil solutions in monocultures and mixed plantations of Acacia mangium and Eucalyptus grandis. We found that Acacia monocultures had higher nitrogen concentrations in the topsoil solutions compared to Eucalyptus, but this difference was no longer observed at deeper depths. Leaching losses of dissolved nutrients were low in fast-growing plantations established on deep Ferralsols.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Plant Sciences
Kittima Waithaisong, Agnes Robin, Louis Mareschal, Jean-Pierre Bouillet, Jean-Michel Harmand, Bruno Bordron, Jean-Paul Laclau, Jose Leonardo Moraes Goncalves, Claude Plassard
Summary: We hypothesized that Acacia mangium, a nitrogen-fixing tree, could enhance the growth and nitrogen nutrition of non-fixing tree species, such as Eucalyptus. We compared N-mineralization rates, respiration rates, and N bioavailability in soil samples collected from areas covered with Acacia, Eucalyptus, or native vegetation in two tropical sites. Our results showed that Eucalyptus seedling growth and N bioavailability were influenced by the N-mineralization rates, but bioassays in pots were more accurate in predicting the growth of Eucalyptus seedlings. Therefore, planting Acacia mangium could be a beneficial option to maintain the growth and N bioavailability of non-fixing tree species in the tropical planted forests.
Article
Forestry
Nicolas Bilot, Christine Deleuze, Laurent Saint-Andre, Yann Rogaume, Meriem Fournier, Holger Wernsdoerfer
Summary: Bioenergy from wood can contribute to energy-transition policies, and using low-quality wood as fuel is important. The study aims to develop a model that links management decisions with indicators of wood fuel production and supply chain, and test it in a case study. Management decisions greatly influence efficiency indicators and its relevance for energy-transition policies.
ANNALS OF FOREST SCIENCE
(2023)
Article
Forestry
J. P. Bouillet, B. Bordron, J. P. Laclau, A. Robin, J. L. M. Goncalves, C. H. Abreu-Junior, P. C. O. Trivelin, Y. Nouvellon, G. le Maire
Summary: This study assessed the potential uptake of nitrogen, potassium, and calcium by Eucalyptus grandis trees in different lateral distances and depths. The results showed that only trees located near the injection point took up the 15NO3- tracer, while the Rb+, Sr2+, and Cs+ tracers were taken up at distances up to 11 meters. The study also revealed the potential of Eucalyptus trees to take up nutrients early, at long distances, and at depth.
FOREST ECOLOGY AND MANAGEMENT
(2023)