Auteurs, date et publication :
Auteurs M.-A. Coutellec , T. Caquet
Publication : Journal of Evolutionary Biology
Date : 2011
Volume : 24
Issue : 10
Pages : 2248-2257
Catégorie(s)
#INRAE #PEARLAuteurs, date et publication :
Auteurs Sabina Burrascano , Giovanni Trentanovi , Yoan Paillet , Jacob Heilmann-Clausen , Paolo Giordani , Simonetta Bagella , Andrés Bravo-Oviedo , Thomas Campagnaro , Alessandro Campanaro , Francesco Chianucci , Pallieter De Smedt , Itziar García-Mijangos , Dinka Matošević , Tommaso Sitzia , Réka Aszalós , Gediminas Brazaitis , Andrea Cutini , Ettore D'Andrea , Inken Doerfler , Jeňýk Hofmeister
Publication : Ecological Indicators
Date : 2025
Volume : 132
Pages : 108266
Catégorie(s)
#FORET OPTMix #INRAERésumé
In recent years, plantations of fast-growing tree species have emerged as a possible way to meet the increasing demand for biomass for renewable energy in Europe. Agroforestry plantations including fast-growing tree species could be an attractive option because they reduce land competition for biomass and food production while providing forest benefits. Today, the species interactions that determine whether a given mixture will be more productive than the corresponding monocultures are still poorly understood. Our objective was to assess the performance of fast-growing trees, i.e. poplar (Populus nigra × P. deltoides) and alder (Alnus glutinosa), in asso ciation with herbaceous species either N2-fixing species (succession alfalfa (Medicago sativa) and clover (Trifolium pratense)) or graminoids (succession of wheat (Triticum aestivum) – triticale (Triticosecale) – temporary grassland consisting of mixtures of perennial ryegrass (Lolium perenne) and fescue (Festuca ovina)), respectively, and in association together. We compared tree growth in mixed stands to growth in the respective tree monocultures. An experimental plantation composed of three blocks including the different treatments was set up in 2014 in northeastern France. In the forest mixture, poplar and alder were planted in alternating rows, and in the agro forestry plots, every second line of trees was replaced by the crops. No fertilizers (of any kind) were used during the experiments. During six growing seasons, tree growth (height and diameter at breast height) was monitored monthly in the agroforestry stands, the forest mixture stand and the two tree monocultures. By the end of 2019, poplar stem height in association with N2-fixing crops (alfalfa, then clover) was higher than in the forest mixture and the monoculture. During the warmest growing season with a marked dry period in June-July (2018), poplar height growth rate in the agroforestry treatment was between three and five times higher than for the poplars in the monoculture and the forest mixture. A facilitation process in the agroforestry plantations could explain this result due to a significant enrichment of the soil in nitrogen by the N2-fixing crops. This result only appeared several years after tree planting, and management actions were necessary in order to control the strong competition between crops and trees during the early stages. In the forest mixture, poplars associated with alders were smaller than in their monoculture, in spite of a stratification of the canopies of the two species. For alders, tree growth did not appear to be affected by either an association with graminoids or with poplar.
Auteurs, date et publication :
Auteurs Anaïs Thomas , Pierrick Priault , Séverine Piutti , Erwin Dallé , Nicolas Marron
Publication : Forest Ecology and Management
Date : 2025
Volume : 480
Issue : 118672
Catégorie(s)
#FORET AgroTCR #INRAEAuteurs, date et publication :
Auteurs J. Aubin , H. Rey-Valette , G. Mathé , A. Wilfart , M. Legendre , J. Slembrouck , E. Chia , G. Masson , M. Callier , J.P. Blancheton , A. Tocqueville , D. Caruso , P. Fontaine
Date : 2025
Catégorie(s)
#INRAE #PEARLAuteurs, date et publication :
Auteurs Gilles Lemaire , François Gastal , Alan Franzluebbers , Abad Chabbi
Publication : Environmental Management
Date : 2025
Volume : 56
Issue : 5
Pages : 1065–1077
Catégorie(s)
#ACBB #ACBB Lusignan #INRAERésumé
Central European grasslands are characterized by a wide range of different management practices in close geographical proximity. Site-specific management strategies strongly affect the biosphere-atmosphere exchange of the three greenhouse gases (GHG) carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4). The evaluation of environmental impacts at site level is challenging, because most in-situ measurements focus on the quantification of CO2 exchange, while long-term N2O and CH4 flux measurements at ecosystem scale remain scarce.
Auteurs, date et publication :
Auteurs Lukas Hörtnagl , Matti Barthel , Nina Buchmann , Werner Eugster , Klaus Butterbach-Bahl , Eugenio Díaz-Pinés , Matthias Zeeman , Katja Klumpp , Ralf Kiese , Michael Bahn , Albin Hammerle , Haiyan Lu , Thomas Ladreiter-Knauss , Susanne Burri , Lutz Merbold
Publication : Global Change Biology
Date : 2018
Catégorie(s)
#ACBB #ACBB Theix #INRAERésumé
To investigate the impact of integrating ley grassland in crop rotations on soil C changes at depths of 0–30 and 0–60 cm, field data regarding C input, soil C and crop production were collected during 2005–2016 from a long-term experimental site in Lusignan, southwestern France. Root biomass C was sampled annually, and the stable C isotope signature (δ13C) was determined to quantify the amount of C input from the root biomass. The results showed that integrating ley grassland in crop rotations increased the C input in the 0–30 and 0–60 cm soil layers. Carbon stocks also increased in the 0–30 cm soil layer but not always in the 0–60 cm layer. However, during the first full rotation (2005–2013), treatments involving 3-year and 6-year grasslands showed 37.5% and 62.5% losses of their crop production, respectively. In crop rotations, integrating ley grassland together with high-nitrogen (N) or low-N fertilisation did not impact the C input, changes in soil C in either the 0–30 or 0–60 cm soil layer, or even crop production, while grass production decreased by 22.2–66.6% under low-N fertilisation. Compared with cropland, permanent grassland did not show a greater C input, whereas the latter showed a C stock increase of 0.6–1.4 Mg C ha−1 yr−1. The analysis of 2005–2013 crop rotation data suggested that both above- and belowground C inputs should be considered as a single total C input. An estimated baseline C input rate of 1.9 Mg C ha−1 yr−1 was suggested to maintain soil C stocks for some of the crop rotations at the site. Considering the balance of food production and soil C stocks, crop rotation in conjunction with 3 years of high-N-fertilised grassland is recommended.
Auteurs, date et publication :
Auteurs Teng Hu , Abad Chabbi
Publication : Agriculture, Ecosystems & Environment
Date : 2022
Volume : 324
Pages : 107703
Catégorie(s)
#ACBB #ACBB Lusignan #INRAERésumé
MDPI is a publisher of peer-reviewed, open access journals since its establishment in 1996.
Auteurs, date et publication :
Auteurs Abad Chabbi , Gianni Bellocchi
Date : 2025
Catégorie(s)
#ACBB #ACBB Lusignan #INRAERésumé
Increasing soil carbon stocks in agricultural grasslands has a strong potential to mitigate climate change. However, large uncertainties around the drivers of soil respiration hinder our ability to identify management practices that enhance soil carbon sequestration. In a context where more intense and prolonged droughts are predicted in many regions, it is critical to understand how different management practices will temper drought-induced carbon losses through soil respiration. In this study, we compared the impact of changing soil volumetric water content during a drought on soil respiration in permanent grasslands managed either as grazed by dairy cows or as a mowing regime. Across treatments, root biomass explained 43% of the variability in soil respiration (p < 0.0001). Moreover, analysis of the isotopic composition of CO2 emitted from the soil, roots, and root-free soil suggested that the autotrophic component largely dominated soil respiration. Soil respiration was positively correlated with soil water content (p = 0.03) only for the grazed treatment. Our results suggest that the effect of soil water content on soil respiration was attributable mainly to an effect on root and rhizosphere activity in the grazed treatment. We conclude that farm management practices can alter the relationship between soil respiration and soil water content.
Auteurs, date et publication :
Auteurs Gabriel Y. K. Moinet , Andrew J. Midwood , John E. Hunt , Cornelia Rumpel , Peter Millard , Abad Chabbi
Publication : Agronomy
Date : 2019
Volume : 9
Issue : 3
Pages : 124
Catégorie(s)
#ACBB #ACBB Lusignan #INRAERésumé
Climate change and other anthropogenic stressors have led to long-term changes in the thermal structure, including surface temperatures, deepwater temperatures, and vertical thermal gradients, in many lakes around the world. Though many studies highlight warming of surface water temperatures in lakes worldwide, less is known about long-term trends in full vertical thermal structure and deepwater temperatures, which have been changing less consistently in both direction and magnitude. Here, we present a globally-expansive data set of summertime in-situ vertical temperature profiles from 153 lakes, with one time series beginning as early as 1894. We also compiled lake geographic, morphometric, and water quality variables that can influence vertical thermal structure through a variety of potential mechanisms in these lakes. These long-term time series of vertical temperature profiles and corresponding lake characteristics serve as valuable data to help understand changes and drivers of lake thermal structure in a time of rapid global and ecological change.
Auteurs, date et publication :
Auteurs Rachel M. Pilla , Elizabeth M. Mette , Craig E. Williamson , Boris V. Adamovich , Rita Adrian , Orlane Anneville , Esteban Balseiro , Syuhei Ban , Sudeep Chandra , William Colom-Montero , Shawn P. Devlin , Margaret A. Dix , Martin T. Dokulil , Natalie A. Feldsine , Heidrun Feuchtmayr , Natalie K. Fogarty , Evelyn E. Gaiser , Scott F. Girdner , María J. González , K. David Hambright
Publication : Scientific Data
Date : 2021
Volume : 8
Issue : 1
Pages : 200