Search

Your search keyword '"Huard, Frédéric"' showing total 41 results
Start Over Author "Huard, Frédéric"
41 results on '"Huard, Frédéric"'

1. Availability and Integration of Agro-Environmental Data: The French Case

Author

Debaeke, Philippe, Aubertot, Jean-Noël, Bardy, Marion, Bertuzzi, Patrick, Constantin, Julie, Durand, Patrick, Guichard, Laurence, Mignolet, Catherine, Munier-Jolain, Nicolas, Therond, Olivier, Wigneron, Jean-Pierre, Ballot, Rémy, Cellier, Pierre, Justes, Eric, Huard, Frédéric, Le Bas, Christine, Richard, Guy, Rizzo, Davide, editor, Marraccini, Elisa, editor, and Lardon, Sylvie, editor

Published
2022
Full Text
View/download PDF

2. Meteorological and climatic variables predict the phenology of Ixodes ricinus nymph activity in France, accounting for habitat heterogeneity

Author

Wongnak, Phrutsamon, Bord, Séverine, Jacquot, Maude, Agoulon, Albert, Beugnet, Frédéric, Bournez, Laure, Cèbe, Nicolas, Chevalier, Adélie, Cosson, Jean-François, Dambrine, Naïma, Hoch, Thierry, Huard, Frédéric, Korboulewsky, Nathalie, Lebert, Isabelle, Madouasse, Aurélien, Mårell, Anders, Moutailler, Sara, Plantard, Olivier, Pollet, Thomas, Poux, Valérie, René-Martellet, Magalie, Vayssier-Taussat, Muriel, Verheyden, Hélène, Vourc’h, Gwenaël, and Chalvet-Monfray, Karine

Published
2022
Full Text
View/download PDF

3. Seasonality of host-seeking Ixodes ricinus nymph abundance in relation to climate

Author

Hoch, Thierry, Madouasse, Aurélien, Jacquot, Maude, Wongnak, Phrutsamon, Beugnet, Fréderic, Bournez, Laure, Cosson, Jean-françois, Huard, Frédéric, Moutailler, Sara, Plantard, Olivier, Poux, Valérie, René-martellet, Magalie, Vayssier-taussat, Muriel, Verheyden, Hélène, Vourc’h, Gwenaël, Chalvet-monfray, Karine, Agoulon, Albert, Hoch, Thierry, Madouasse, Aurélien, Jacquot, Maude, Wongnak, Phrutsamon, Beugnet, Fréderic, Bournez, Laure, Cosson, Jean-françois, Huard, Frédéric, Moutailler, Sara, Plantard, Olivier, Poux, Valérie, René-martellet, Magalie, Vayssier-taussat, Muriel, Verheyden, Hélène, Vourc’h, Gwenaël, Chalvet-monfray, Karine, and Agoulon, Albert

Abstract

There is growing concern about climate change and its impact on human health. Specifically, global warming could increase the probability of emerging infectious diseases, notably because of changes in the geographical and seasonal distributions of disease vectors such as mosquitoes and ticks. For example, the range of Ixodes ricinus, the most common and widespread tick species in Europe, is currently expanding northward and at higher altitudes. However, little is known about the seasonal variation in tick abundance in different climates. Seasonality of I. ricinus is often based on expert opinions while field surveys are usually limited in time. Our objective was to describe seasonal variations in I. ricinus abundance under different climates. To this end, a seven-year longitudinal study, with monthly collections of I. ricinus host-seeking nymphs, was carried out in France, in six locations corresponding to different climates. Tick data were log-transformed and grouped between years so as to obtain seasonal variations for a typical year. Daily average temperature was measured during the study period. Seasonal patterns of nymph abundance were established for the six different locations using linear harmonic regression. Model parameters were estimated separately for each location. Seasonal patterns appeared different depending on the climate considered. Western temperate sites showed an early spring peak, a summer minimum and a moderate autumn and winter abundance. More continental sites showed a later peak in spring, and a minimum in winter. The peak occurred in summer for the mountainous site, with an absence of ticks in winter. In all cases except the mountainous site, the timing of the spring peak could be related to the sum of degree days since the beginning of the year. Winter abundance was positively correlated to the corresponding temperature. Our results highlight clear patterns in the different sites corresponding to different climates, which allow further fo

Published
2024
Full Text
View/download PDF

8. Uncertainty assessment of the soil carbon balance in the context of the 4 per 1000 aspirational target: A case study for France

Author

Martin, Manuel Pascal, Dimassi, Bassem, Dobarco, Mercedes Romàn, Guenet, Bertrand, Arrouays, Dominique, Angers, Denis A., Blache, Fabrice, Huard, Frédéric, Soussana, Jean-François, Pellerin, Sylvain, Info&Sols (Info&Sols), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), The University of Sydney, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de géologie de l'ENS (LGENS), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Agriculture and Agri-Food (AAFC), Lycée Pothier, Direction Responsabilité Sociétale et Environnementale (UAR DRSE), Interactions Sol Plante Atmosphère (UMR ISPA), Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Le Studium, and INRAE-Info&Sols

Subjects
[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study
Abstract

International audience

Published
2023

11. Seasonality of host-seekingIxodes ricinusnymph abundance in relation to climate

Author

Hoch, Thierry, primary, Madouasse, Aurélien, additional, Jacquot, Maude, additional, Wongnak, Phrutsamon, additional, Beugnet, Fréderic, additional, Bournez, Laure, additional, Cosson, Jean-François, additional, Huard, Frédéric, additional, Moutailler, Sara, additional, Plantard, Olivier, additional, Poux, Valérie, additional, René-Martellet, Magalie, additional, Vayssier-Taussat, Muriel, additional, Verheyden, Hélène, additional, Vourc’h, Gwenaël, additional, Chalvet-Monfray, Karine, additional, and Agoulon, Albert, additional

Published
2022
Full Text
View/download PDF

13. Meteorological and climatic variables predict the phenology of Ixodes ricinus nymphs activity in France, accounting for habitat heterogeneity

Author

Wongnak, Phrutsamon, primary, Jacquot, Maude, additional, Bord, Séverine, additional, Agoulon, Albert, additional, Beugnet, Frédéric, additional, Bournez, Laure, additional, Cèbe, Nicolas, additional, Chevalier, Adélie, additional, Cosson, Jean-François, additional, Dambrine, Naïma, additional, Hoch, Thierry, additional, Huard, Frédéric, additional, Korboulewsky, Nathalie, additional, Lebert, Isabelle, additional, Madouasse, Aurélien, additional, Mårell, Anders, additional, Moutailler, Sara, additional, Plantard, Olivier, additional, Pollet, Thomas, additional, Poux, Valérie, additional, René-Martellet, Magalie, additional, Vayssier-Taussat, Muriel, additional, Verheyden, Hélène, additional, Vourc’h, Gwenaël, additional, and Chalvet-Monfray, Karine, additional

Published
2021
Full Text
View/download PDF

14. L'eau en milieu agricole

Author

Alcazar, Charlotte, Allain, Sandrine, Augeard, Bénédicte, Baillieux, Antoine, Ballot, Rémy, Barataud, Fabienne, Barone, Sylvain, Barreteau, Olivier, Bergez, Jacques-Éric, Bertuzzi, Patrick, Biarnès, Anne, Bonifazi, Mathilde, Bourrié, Guilhem, Bousquet, François, Chanzy, André, Chery, Jean-Pierre, Cognard-Plank, Anne-Laure, Coudercy, Laurent, Courault, Dominique, Cousin, Isabelle, Debril, Thomas, Destandau, François, Durand, Patrick, Echeverria, Javier, Étienne, Michel, Ferrand, Nils, Ferrané, Claudine, Garcia, Serge, Garin, Patrice, Gaudin, Alexandre, Gillon, Marina, Guichard, Laurence, Hassenforder, Émeline, Huard, Frédéric, Jarlan, Lionel, Jeuffroy, Marie-Hélène, Khabba, Saïd, Leenhardt, Delphine, Le Page, Christophe, Le Page, Michel, Magand, Claire, Meynard, Jean-Marc, Mignolet, Catherine, Millair, Laurent, Molénat, Jérôme, Murgue, Clément, Olioso, Albert, Petit, Olivier, Prost, Lorène, Reau, Raymond, Richer-de-Forges, Anne C., Rivière-Honegger, Anne, Ruy, Stéphane, Souchère, Véronique, Therond, Olivier, Thomas, Alban, Thoyer, Sophie, Trolard, Fabienne, Voltz, Marc, Leenhardt, Delphine, Voltz, Marc, and Barreteau, Olivier

Subjects
eau douce, Economics, Environmental Studies, pisciculture, santé, écosystème
Abstract

L’eau est un enjeu majeur dans de nombreuses régions du monde du fait de besoins en forte croissance, mais aussi de la rareté et de la dégradation des ressources disponibles. L’agriculture étant le premier usager de la ressource en eau, la durabilité de la gestion de l’eau en milieu rural est cruciale. Elle nécessite de dépasser les approches sectorielles, encore largement en cours malgré divers courants appelant à une gestion intégrée, territoriale ou adaptative de la ressource. Prenant acte que la mise en œuvre des concepts proposés par ces différents courants est rarement effective et qu’il est plus pragmatique de rechercher la meilleure coordination possible entre les parties prenantes de la gestion de l’eau, cet ouvrage collectif analyse les enjeux, outils et démarches permettant de faciliter et d’accompagner cette coordination. En effet, une coordination effective et acceptée nécessite des méthodes et outils pour informer sur l’état de la ressource et des usages, rendre visible l’importance des enjeux, évaluer les effets et les expliquer, structurer les échanges, et élaborer et discuter des actions de gestion. L’ouvrage aborde la gestion de l’eau en milieu rural en termes d’objectifs et de démarche, puis fait un panorama large des outils, des méthodes et des données actuellement disponibles. Enfin, il décrit des exemples de mises en œuvre dans différents cas d’étude. Cet ouvrage de synthèse s’adresse à un public large allant des chercheurs, étudiants et enseignants en gestion de l’eau aux professionnels concernés par sa mise en œuvre.

Published
2021

15. Chapitre 7- Les données météorologiques

Author

Bertuzzi, Patrick and Huard, Frédéric

Subjects
eau douce, Economics, Environmental Studies, pisciculture, santé, écosystème
Abstract

La disponibilité de l’eau est étroitement liée au fonctionnement du système climatique et météorologique. Les conditions atmosphériques sont les déterminants de son changement d’état sous forme gazeuse, liquide ou solide le long de son parcours au sein du cycle de l’eau. Les conditions météorologiques et leur variabilité dans le temps et dans l’espace sont en interaction directe avec le fonctionnement d’un hydrosystème (paysage, bass...

Published
2021

16. Feasibility of the 4 per 1000 aspirational target for soil carbon: A case study for France

Author

Martin, Manuel P., Dimassi, Bassem, Román Dobarco, Mercedes, Guenet, Bertrand, Arrouays, Dominique, Angers, Denis A., Blache, Fabrice, Huard, Frédéric, Soussana, Jean‐François, Pellerin, Sylvain, InfoSol (InfoSol), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Modélisation des Surfaces et Interfaces Continentales (MOSAIC), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Agriculture and Agri-Food Canada, Saskatoon Research Centre, Agriculture and Agri-Food [Ottawa] (AAFC), Lycée Pothier, Agroclim (AGROCLIM), Collège de Direction (CODIR), Interactions Sol Plante Atmosphère (UMR ISPA), Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), ANR-16-CONV-0003,CLAND,CLAND : Changement climatique et usage des terres(2016), European Project: 774378,Horizon 2020,CIRCASA(2017), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de géologie de l'ENS (LGENS), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Agriculture and Agri-Food (AAFC)

Subjects
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [SDV.SA]Life Sciences [q-bio]/Agricultural sciences, Carbon Sequestration, [SDE.MCG]Environmental Sciences/Global Changes, Primary Research Articles, RothC, Carbon, climate change mitigation, soil organic carbon, Soil, SOC saturation, Feasibility Studies, 4 per 1000, Primary Research Article, net primary productivity, France, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment
Abstract

Increasing soil organic carbon (SOC) stocks is a promising way to mitigate the increase in atmospheric CO2 concentration. Based on a simple ratio between CO2 anthropogenic emissions and SOC stocks worldwide, it has been suggested that a 0.4% (4 per 1000) yearly increase in SOC stocks could compensate for current anthropogenic CO2 emissions. Here, we used a reverse RothC modelling approach to estimate the amount of C inputs to soils required to sustain current SOC stocks and to increase them by 4‰ per year over a period of 30 years. We assessed the feasibility of this aspirational target first by comparing the required C input with net primary productivity (NPP) flowing to the soil, and second by considering the SOC saturation concept. Calculations were performed for mainland France, at a 1 km grid cell resolution. Results showed that a 30%–40% increase in C inputs to soil would be needed to obtain a 4‰ increase per year over a 30‐year period. 88.4% of cropland areas were considered unsaturated in terms of mineral‐associated SOC, but characterized by a below target C balance, that is, less NPP available than required to reach the 4‰ aspirational target. Conversely, 90.4% of unimproved grasslands were characterized by an above target C balance, that is, enough NPP to reach the 4‰ objective, but 59.1% were also saturated. The situation of improved grasslands and forests was more evenly distributed among the four categories (saturated vs. unsaturated and above vs below target C balance). Future data from soil monitoring networks should enable to validate these results. Overall, our results suggest that, for mainland France, priorities should be (1) to increase NPP returns in cropland soils that are unsaturated and have a below target carbon balance and (2) to preserve SOC stocks in other land uses., The 4 per 1000 aspirational target suggests that a 0.4% yearly increase in soil organic carbon (SOC) stocks could compensate for current anthropogenic CO2 emissions. Using a model of SOC dynamics, estimates of available net primary productivity (NPP), and applying the SOC saturation concept, we assessed its feasibility in the case of mainland France. Our results indicate that the 4 per 1000 target is reachable only for limited areas. Priorities should be to increase NPP returns in cropland soils that are unsaturated and have a below target carbon balance, but also to preserve SOC stocks in other land uses.

Published
2021

17. Corrigendum to 'Distinct and combined impacts of climate and land use scenarios on water availability and sediment loads for a water supply reservoir in northern Moroccoˮ [International Soil and Water Conservation Research 8 (2020) 141–153]

Author

Choukri, Fatiha, Raclot, Damien, Naimi, Mustapha, Chikhaoui, Mohamed, Nunes, João Pedro, Huard, Frédéric, Hérivaux, Cécile, Vinatier, Fabrice, Sabir, Mohamed, Pépin, Yannick, Institut Agronomique et Vétérinaire Hassan II - IAV (MOROCCO) (IAV), Laboratoire d'étude des Interactions Sol - Agrosystème - Hydrosystème (UMR LISAH), Institut de Recherche pour le Développement (IRD)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre for Ecology - Evolution and Environmental Changes (cE3c), Universidade de Lisboa (ULISBOA), Agroclim (AGROCLIM), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Ecole Nationale Forestière d'Ingénieurs du Maroc [Salé] (ENFI), Institut Agronomique et Vétérinaire Hassan II (IAV Hassan II), Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and Universidade de Lisboa = University of Lisbon (ULISBOA)

Subjects
Hydrology, Land use, business.industry, [SDV]Life Sciences [q-bio], Soil Science, Water supply, Sediment, 15. Life on land, 6. Clean water, 13. Climate action, lcsh:TA1-2040, Environmental science, Soil conservation, business, lcsh:Engineering (General). Civil engineering (General), Agronomy and Crop Science, ComputingMilieux_MISCELLANEOUS, Nature and Landscape Conservation, Water Science and Technology
Abstract

International audience

Published
2021

18. Direct and Indirect Analysis of the Elevational Shift of Larch Budmoth Outbreaks Along an Elevation Gradient

Author

Rozenberg, Philippe, Pâques, Luc, Huard, Frédéric, Roques, Alain, Biologie intégrée pour la valorisation de la diversité des Arbres et de la Forêt (BioForA), Office National des Forêts (ONF)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Agroclim (AGROCLIM), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and Unité de recherche Zoologie Forestière (URZF)

Subjects
lcsh:GE1-350, larch budmoth, European larch, tree-ring, global warming, latewood density, [SDV.EE.ECO]Life Sciences [q-bio]/Ecology, environment/Ecosystems, [SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture, forestry, Zeiraphera griseana, lcsh:SD1-669.5, lcsh:Forestry, Larix decidua, lcsh:Environmental sciences, [SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis
Abstract

International audience; Larch budmoth (LBM) periodically defoliates alpine stands of European larch during vast outbreaks occurring generally at 8-10 year intervals. LBM outbreaks recently declined and the ongoing global warming has been pointed out as a possible cause of this decline. In this article, we reconstructed the recent history of LBM outbreaks at different elevations along a larch elevational gradient in the French Alps using direct and indirect observations based on tree-ring width and density analysis, and compared it with local climatic data. We found that LBM outbreaks time-series were better reconstructed with latewood density than with ring width. We also found that there was a recent but limited elevational shift of LBM outbreaks from medium toward higher elevations. We suggest that this elevational shift is a consequence of the variable effect of the global warming at the different elevations. Winter warming is expected to affect differently the timing of LBM egg hatch as well as that of larch bud flush, larvae being at present susceptible to emerge whereas no needles are available as food at the former optimal elevation. A better synchronization between larch and LBM may exist at higher elevations.

Published
2020

19. Projecting Future Impacts of Global Change Including Fires on Soil Erosion to Anticipate Better Land Management in the Forests of NW Portugal

Author

Pastor, Amandine Valérie, primary, Nunes, Joao Pedro, additional, Ciampalini, Rossano, additional, Koopmans, Myke, additional, Baartman, Jantiene, additional, Huard, Frédéric, additional, Calheiros, Tomas, additional, Le-Bissonnais, Yves, additional, Keizer, Jan Jacob, additional, and Raclot, Damien, additional

Published
2019
Full Text
View/download PDF

20. Fine spatialization of climate projections in the Tleta watershed, northern Morocco

Author

HUARD, Frédéric, CHOUKRI, F., RACLOT, Damien, PÉPIN, Yannick, CHIKHAOUI, Mohamed, NAIMI, Mustapha, HUARD, Frédéric, CHOUKRI, F., RACLOT, Damien, PÉPIN, Yannick, CHIKHAOUI, Mohamed, and NAIMI, Mustapha

Abstract

Local studies of climate change impact require high spatial resolution of climate predictions. Within ALMIRA research project, agronomists and hydrologists wish to integrate climate predictions into their models in order to characterize the behavior of Tleta watershed by 2050. Global and regional climate models can only apprehend it through one or fewer pixels at best. It is also essential to use a statistical downscaling method, which allows for improving spatial resolution. Based on climate predictions from the French ALADIN-Climate model and available climatic series, a processing sequence has been developed to provide spatialized fields of climatic variables over the period 2021-2060 at 1 km² resolution. Keywords: Climate predictions, Spatialization, Nakhla Watershed, Rif, Morocco, Les études locales de l’impact du changement climatique nécessitent des projections climatiques à haute résolution spatiale. Dans le cadre du projet de recherche ALMIRA, les agronomes et hydrologues souhaitent intégrer à leurs modèles des projections climatiques afin de caractériser le fonctionnement du bassin versant du Tleta à l’horizon des années 2050. Les modèles climatiques globaux et régionaux ne peuvent l’appréhender qu’à travers un, voire quelques pixels au mieux. Aussi, il est indispensable de pratiquer une descente d’échelle statistique qui permette d’affiner la résolution spatiale. En s’appuyant sur les projections climatiques issues du modèle français ALADIN-Climat et des sériesclimatiques disponibles, une chaîne de traitements a été développée afin de fournir des champs spatialisés de variables climatiques sur la période 2021-2060 à une maille de 1 km². Mots clés : Projections climatiques, Spatialisation, Bassin versant Nakhla, Rif, Maroc

Published
2019

21. Projecting future impacts of global change including fires on soil erosion to anticipate better land management in the forests of NW Portugal

Author

Pastor, Amandine Valérie, Nunes, Joao Pedro, Ciampalini, Rossano, Koopmans, Myke, Baartman, Jantiene, Huard, Frédéric, Calheiros, Tomas, Le-Bissonnais, Yves, Keizer, Jan Jacob, Raclot, Damien, Pastor, Amandine Valérie, Nunes, Joao Pedro, Ciampalini, Rossano, Koopmans, Myke, Baartman, Jantiene, Huard, Frédéric, Calheiros, Tomas, Le-Bissonnais, Yves, Keizer, Jan Jacob, and Raclot, Damien

Abstract

Wildfire is known to create the pre-conditions leading to accelerated soil erosion. Unfortunately, its occurrence is expected to increase with climate change. The objective of this study was to assess the impacts of fire on runoffand soil erosion in a context of global change, and to evaluate the effectiveness of mulching as a post-fire erosion mitigation measure. For this, the long-term soil erosion model LandSoil was calibrated for a Mediterranean catchment in north-central Portugal that burnt in 2011. LandSoil was then applied for a 20-year period to quantify the separate and combined hydrological and erosion impacts of fire frequency and of post-fire mulching using four plausible site-specific land use and management scenarios (S1. business-as-usual, S2. market-oriented, S3. environmental protection and S4. sustainable trade-off) and an intermediate climate change scenario Representative Concentration Pathway (RCP) 4.5 by 2050. The obtained results showed that: (i) fire had a reduced impact on runoffgeneration in the studied catchment (<5%) but a marked impact on sediment yield (SY) by about 30%; (ii) eucalypt intensification combined with climate change and fires can increase SY by threefold and (iii) post-fire mulching, combined with riparian vegetation maintenance/restoration and reduced tillage at the landscape level, was highly effective to mitigate soil erosion under global change and associated, increased fire frequency (up to 50% reduction). This study shows how field monitoring data can be combined with numerical erosion modeling to segregate the prominent processes occurring in post forest fire conditions and find the best management pathways to meet international goals on achieving land degradation neutrality (LDN).

Published
2019

22. Dendroecological analysis of the altitudinal shift of larch budmoth outbreaks with climate change in the french Alps

Author

Rozenberg, Philippe, Mayeur, Nathalie, Nardin, Maxime, Huard, Frédéric, Button, Céline, Roques, Alain, and Rozenberg, Philippe

Subjects
ring width, altitudinal gradient, Larch, larch budmoth, [SDV.GEN.GPL] Life Sciences [q-bio]/Genetics/Plants genetics, Zeiraphera griseana, [SDV.EE.ECO] Life Sciences [q-bio]/Ecology, environment/Ecosystems, [SDV.EE.IEO] Life Sciences [q-bio]/Ecology, environment/Symbiosis, [SDV.SA.SF] Life Sciences [q-bio]/Agricultural sciences/Silviculture, forestry, Larix decidua
Abstract

occurring at 8-10 year intervals, with an optimum at 1800 m altitude. Severe defoliation decreases the trees’ photosynthetic potential and growth, especially resulting into narrower ring width. We investigated annual-ring time series in order to reconstruct the history of LBM outbreaks between 1963 and 2007 along a larch altitudinal gradient ranging from 1350 to 2300 m, in the Briançon area of the Southeastern French Alps,A comparison of the annual-ring time series measured on the larch host trees with the annual variations in LBM population density estimated by branch samplings in a stand located a few kilometers apart revealed an excellent temporal coincidence between the occurrence of LBM outbreaks and the width of the rings. LBM outbreaks not only affected ring width but also other annual-ring variables, including traits related with sap conduction. Finally, the study of the annual-ring time series along the altitudinal gradient showed a recent altitudinal shift of LBM outbreaks from medium towards higher elevations, over 2000 m. We suggest that this altitudinal shift is a consequence of the variable effect of global warming at the different elevations. Longer and warmer summer improves larch life conditions at the top of the gradient while increased summer drought may have a harmful effect at the bottom. Winter warming is also expected to affect differently the timing of LBM egg hatch and that of larch bud flush, larvae being at present susceptible to emerge whereas no needles are available as food at the former optimal altitude. A better synchronization between larch and LBM may exist at higher elevations. Whether the larch ecosystem will be able to adapt at all points of its altitudinal distribution is still an open question.

Published
2018

23. Climate warming inversely affects Larch at each end of its altitudinal distribution

Author

Rozenberg, Philippe, Chauvin, Thibaud, Escobar Sandoval, Margarita Concepción, Huard, Frédéric, Shishov, Vladimir, Charpentier, Jean-Paul, Pâques, Luc E., and Rozenberg, Philippe

Subjects
[SDV.GEN.GPL] Life Sciences [q-bio]/Genetics/Plants genetics, [SDV.EE.ECO] Life Sciences [q-bio]/Ecology, environment/Ecosystems, [SDV.EE.IEO] Life Sciences [q-bio]/Ecology, environment/Symbiosis, [SDV.SA.SF] Life Sciences [q-bio]/Agricultural sciences/Silviculture, forestry
Published
2018

24. Spatial daily rainfall descriptors to reproduce sub-daily dynamics in the analog method for temporal disaggregation

Author

Carreau, Julie, Neppel, Luc, Benmhenni, N., Huard, Frédéric, Hydrosciences Montpellier (HSM), Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Recherche pour le Développement (IRD)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Événements Extrêmes (EvExt), and Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Recherche pour le Développement (IRD)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Recherche pour le Développement (IRD)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2017

27. L’impact de la recherche agronomique sur la productivité agricole française. Une approche par le taux de rentabilité interne (TRI) des dépenses publiques affectées à la recherche agronomique en France

Author

Butault, Jean-Pierre, Lemarié, Stéphane, Musolesi, Antonio, Huard, Frédéric, Simioni, Michel, and Schmitt, Bertrand

Subjects
Productivity Analysis, Research and Development/Tech Change/Emerging Technologies
Abstract

Une équipe de chercheurs de l’INRA a évalué le rôle de la recherche agronomique sur l’évolution de la productivité de l’agriculture française. Pour ce faire, ils ont mobilisé deux approches complémentaires appliquées à des séries statistiques reliant l’évolution sur longue période de la productivité totale des facteurs de l’agriculture française et celle des dépenses publiques en recherche dédiées au secteur agricole. La première approche permet d’analyser statistiquement la relation entre productivité agricole et stock de connaissances issues des dépenses publiques de recherche. La seconde, de nature comptable, vise à calculer directement un taux de rentabilité interne (TRI) de la recherche agricole de sorte à en examiner l’évolution dans le temps. En cohérence avec les résultats obtenus dans d’autres contextes géographiques, le TRI de la recherche agricole française se serait approché de 30 % dans les années 1960. Ce taux aurait tendance à baisser au cours des années récentes. Plusieurs phénomènes peuvent expliquer cette tendance à la baisse de l’impact des dépenses publiques de recherche agricole sur la productivité agricole française, en particulier l’affaiblissement des innovations de rupture ou l’évolution des objectifs de la recherche agronomique.

Published
2015
Full Text
View/download PDF

28. Evidence of divergent selection for drought and cold tolerance at landscape and local scales in Abies alba Mill. in the French Mediterranean Alps

Author

Roschanski, Anna M., primary, Csilléry, Katalin, additional, Liepelt, Sascha, additional, Oddou‐Muratorio, Sylvie, additional, Ziegenhagen, Birgit, additional, Huard, Frédéric, additional, Ullrich, Kristian K., additional, Postolache, Dragos, additional, Vendramin, Giovanni G., additional, and Fady, Bruno, additional

Published
2016
Full Text
View/download PDF

30. Le cèdre en France face au changement climatique : bilan et recommandations

Author

Lagacherie, Manon, Marty, P., Ladier, Jean, Ripert, C., Riou Nivert, P., Huard, Frédéric, Amandier, L., Paillassa, E., Courbet, François, CRPF, Office National des Forêts (ONF), Ecosystèmes méditerranéens et risques (UR EMAX), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), CNPF IDF FRA, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), and Institut National de la Recherche Agronomique (INRA)

Subjects
[SDE]Environmental Sciences
Abstract

Face au changement climatique, le cèdre est souvent présenté comme une des essences potentielles de substitution aux espèces sensibles à la sécheresse. L’expérience ancienne acquise en région méditerranéenne et les essais plus récents en région tempérée confirment son intérêt. Pour autant, l’utilisation du cèdre doit répondre à des exigences strictes sous peine d’échec. À partir de l’état des connaissances sur le cèdre de l’Atlas, tirées de la bibliographie et complétées par une enquête nationale des références existantes sur le terrain, ce document rassemble les éléments permettant au gestionnaire d’installer et de conduire ses peuplements en connaissance de cause : - autécologie, comportement vis-à-vis des facteurs climatiques et des caractéristiques du sol - recommandations techniques pour l’installation des peuplements - indications et éléments de choix d'itinéraires sylvicoles - qualité et utilisations du bois - risques sanitaires - références bibliographiques.

Published
2012

31. Le cèdre en France face au changement climatique : bilan et recommandations

Author

Courbet, François, Lagacherie, Michèle, Marty, Pauline, Ladier, Jean, Ripert, Christian, Riou Nivert, Philippe, Huard, Frédéric, Klein, Etienne K, Amandier, Louis, Paillassa, Eric, Unité de Recherches Forestières Méditerranéennes (URFM), Institut National de la Recherche Agronomique (INRA), Centre Régional de la Propriété Forestière du Languedoc-Roussillon (CRPF Languedoc-Roussillon), CRPF, Office National des Forêts (ONF), Ecosystèmes méditerranéens et risques (UR EMAX), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), CNPF IDF FRA, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Agroclim (AGROCLIM), Biostatistique et Processus Spatiaux (BioSP), and Francois Courbet

Subjects
[SDE]Environmental Sciences
Abstract

International audience; In adapting forests to climate change, cedar is often recommended as a potential species to replace existing conifers that are sensitive to drought. The experience in the French Mediterranean zone and the more recent tests in the temperate zone confirm this interest. Nevertheless, cedar establishment and silviculture must follow strict guidelines in order to be successful. The state of knowledge on Atlas cedar, as synthesised in this document, is drawn from a literature review and from a nationwide survey of field trials. The information will help foresters to make informed decisions concerning the establishment and management of cedar stands, including the following aspects: - autecology and behaviour with respect to climatic factors and soil characteristics - technical recommendations for reafforestation and management of stands - indications and criteria to select silvicultural treatments - timber quality and uses - health issues - references; Face au changement climatique, le cèdre est souvent présenté comme une des essences potentielles de substitution aux espèces sensibles à la sécheresse. L’expérience ancienne acquise en région méditerranéenne et les essais plus récents en région tempérée confirment son intérêt. Pour autant, l’utilisation du cèdre doit répondre à des exigences strictes sous peine d’échec. À partir de l’état des connaissances sur le cèdre de l’Atlas, tirées de la bibliographie et complétées par une enquête nationale des références existantes sur le terrain, ce document rassemble les éléments permettant au gestionnaire d’installer et de conduire ses peuplements en connaissance de cause : - autécologie, comportement vis-à-vis des facteurs climatiques et des caractéristiques du sol - recommandations techniques pour l’installation des peuplements - indications et éléments de choix d'itinéraires sylvicoles - qualité et utilisations du bois - risques sanitaires - références bibliographiques.

Published
2012

32. Atlas Cedar and climate change in France : assessment and recommendations

Author

Courbet, François, Lagacherie, Michèle, Marty, Pauline, Ladier, Jean, Ripert, Christian, Riou Nivert, Philippe, Huard, Frédéric, Klein, Etienne K, Amandier, Louis, Paillassa, Eric, Unité de Recherches Forestières Méditerranéennes (URFM), Institut National de la Recherche Agronomique (INRA), Centre Régional de la Propriété Forestière du Languedoc-Roussillon (CRPF Languedoc-Roussillon), CRPF, Office National des Forêts (ONF), Ecosystèmes méditerranéens et risques (UR EMAX), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), CNPF IDF FRA, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Agroclim (AGROCLIM), Biostatistique et Processus Spatiaux (BioSP), and Francois Courbet

Subjects
[SDE]Environmental Sciences
Abstract

International audience; In adapting forests to climate change, cedar is often recommended as a potential species to replace existing conifers that are sensitive to drought. The experience in the French Mediterranean zone and the more recent tests in the temperate zone confirm this interest. Nevertheless, cedar establishment and silviculture must follow strict guidelines in order to be successful. The state of knowledge on Atlas cedar, as synthesised in this document, is drawn from a literature review and from a nationwide survey of field trials. The information will help foresters to make informed decisions concerning the establishment and management of cedar stands, including the following aspects: - autecology and behaviour with respect to climatic factors and soil characteristics - technical recommendations for reafforestation and management of stands - indications and criteria to select silvicultural treatments - timber quality and uses - health issues - references; Face au changement climatique, le cèdre est souvent présenté comme une des essences potentielles de substitution aux espèces sensibles à la sécheresse. L’expérience ancienne acquise en région méditerranéenne et les essais plus récents en région tempérée confirment son intérêt. Pour autant, l’utilisation du cèdre doit répondre à des exigences strictes sous peine d’échec. À partir de l’état des connaissances sur le cèdre de l’Atlas, tirées de la bibliographie et complétées par une enquête nationale des références existantes sur le terrain, ce document rassemble les éléments permettant au gestionnaire d’installer et de conduire ses peuplements en connaissance de cause : - autécologie, comportement vis-à-vis des facteurs climatiques et des caractéristiques du sol - recommandations techniques pour l’installation des peuplements - indications et éléments de choix d'itinéraires sylvicoles - qualité et utilisations du bois - risques sanitaires - références bibliographiques.

Published
2012

34. An overview of the consequences of the 2003 summer for agriculture in France

Author

Seguin, Bernard, Baculat, Bernard, Baret, Frédéric, Brisson, Nadine, Huard, Frédéric, Ruget, Francoise, Agroclim (AGROCLIM), Institut National de la Recherche Agronomique (INRA), Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes (EMMAH), Avignon Université (AU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and ProdInra, Migration

Subjects
[SDV] Life Sciences [q-bio], [SDE] Environmental Sciences, [SDV]Life Sciences [q-bio], [SDE]Environmental Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2004

41. Feasibility of the 4 per 1000 aspirational target for soil carbon: A case study for France.

Author

Martin MP, Dimassi B, Román Dobarco M, Guenet B, Arrouays D, Angers DA, Blache F, Huard F, Soussana JF, and Pellerin S

Subjects
Carbon Sequestration, Feasibility Studies, France, Carbon analysis, Soil
Abstract

Increasing soil organic carbon (SOC) stocks is a promising way to mitigate the increase in atmospheric CO 2 concentration. Based on a simple ratio between CO 2 anthropogenic emissions and SOC stocks worldwide, it has been suggested that a 0.4% (4 per 1000) yearly increase in SOC stocks could compensate for current anthropogenic CO 2 emissions. Here, we used a reverse RothC modelling approach to estimate the amount of C inputs to soils required to sustain current SOC stocks and to increase them by 4‰ per year over a period of 30 years. We assessed the feasibility of this aspirational target first by comparing the required C input with net primary productivity (NPP) flowing to the soil, and second by considering the SOC saturation concept. Calculations were performed for mainland France, at a 1 km grid cell resolution. Results showed that a 30%-40% increase in C inputs to soil would be needed to obtain a 4‰ increase per year over a 30-year period. 88.4% of cropland areas were considered unsaturated in terms of mineral-associated SOC, but characterized by a below target C balance, that is, less NPP available than required to reach the 4‰ aspirational target. Conversely, 90.4% of unimproved grasslands were characterized by an above target C balance, that is, enough NPP to reach the 4‰ objective, but 59.1% were also saturated. The situation of improved grasslands and forests was more evenly distributed among the four categories (saturated vs. unsaturated and above vs below target C balance). Future data from soil monitoring networks should enable to validate these results. Overall, our results suggest that, for mainland France, priorities should be (1) to increase NPP returns in cropland soils that are unsaturated and have a below target carbon balance and (2) to preserve SOC stocks in other land uses., (© 2021 The Authors. Global Change Biology published by John Wiley & Sons Ltd.)

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results