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Drought in the forest breaks plant–fungi interactions / Andrzej Boczoń in European Journal of Forest Research, vol 140 n° 6 (December 2021)  

Public [article]  inEuropean Journal of Forest Research > vol 140 n° 6 (December 2021) . - pp 1301 - 1321 Titre : Drought in the forest breaks plant–fungi interactions Type de document : Article/Communication Auteurs : Andrzej Boczoń, Auteur ; Dorota Hilszczańska, Auteur ; Marta Wrzosek, Auteur ; et al., Auteur Année de publication : 2021 Article en page(s) : pp 1301 - 1321 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] champignon mycorhizien [Termes IGN] dépérissement [Termes IGN] écosystème forestier [Termes IGN] endophyte [Termes IGN] Europe centrale [Termes IGN] relations plante - sol [Termes IGN] sécheresse [Termes IGN] stress hydrique [Termes IGN] teneur en eau de la végétation [Vedettes matières IGN] Végétation et changement climatique Résumé : (auteur) Drought in the forest is not only a prolonged state of water shortage, but also an occasion where interactions between plants and fungi are affected. Water efficiency accelerates a range of pathologies in interactions between organisms, influencing the ecosystems and their interacting biological components. This study focuses on the role of mycorrhizal and endophyte fungi in alleviating the effects of soil water shortage, and on the impact of their altered activity during drought on the health of trees. The issues presented here show the fundamental role of the mycorrhizal mycelium and the mechanism of water transport to the plant in the course of other phenomena (withering, pathogenesis, endophytes biology) that occur in trees under influence of drought, with particular attention on managed coniferous stands. Conclusions resulting from published information on this topic emphasize the negative impact of soil moisture deficiency on the ectomycorrhizal fungi functioning and, in contrast, on the promotion of the growth of some endophytes, pathogens and hemi-parasitic mistletoes (Viscum spp.). Numéro de notice : A2021-836 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1007/s10342-021-01409-5 Date de publication en ligne : 04/09/2021 En ligne : https://doi.org/10.1007/s10342-021-01409-5 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=99016 [article]

Variation in plant–soil interactions among temperate forest herbs / Jared J. Beck in Plant ecology, vol 222 n° 11 (November 2021)  

Public [article]  inPlant ecology > vol 222 n° 11 (November 2021) . - pp 1225 - 1238 Titre : Variation in plant–soil interactions among temperate forest herbs Type de document : Article/Communication Auteurs : Jared J. Beck, Auteur Année de publication : 2021 Article en page(s) : pp 1225 - 1238 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] croissance végétale [Termes IGN] forêt tempérée [Termes IGN] herbe [Termes IGN] phytoécologie [Termes IGN] relations plante - sol [Termes IGN] Wisconsin (Etats-Unis) [Vedettes matières IGN] Ecologie forestière Résumé : (auteur) Antagonistic interactions between plants and soil biota promote species diversity in many plant communities but little is known about how these plant–soil interactions influence herbaceous species in temperate forests. To assess the potential for soil biota to affect the growth of forest herbs, I conducted a greenhouse experiment in which seedlings of nine focal herb species common in Wisconsin (USA) forests were grown in soil derived from conspecific and heterospecific plants. This soil origin treatment was crossed with a subsequent treatment in which half of the soils were pasteurized to eliminate soil biota. The presence and origin of soil biota had variable effects on plant growth among the nine focal species. Thalictrum dioicum, Elymus hystrix, and Solidago flexicaulis growth were inhibited by the presence of soil biota in unpasteurized soils. Thalictrum dioicum seedlings grown in conspecific, unpasteurized soil accumulated 30% less biomass than seedlings grown in heterospecific, unpasteurized soil indicating that host-specific effects of microbial pathogens restrict seedling growth. Similarly, E. hystrix seedlings were 11% smaller in conspecific-trained soils. The remaining herb species showed no significant response to experimental treatments manipulating soil biota. These variable growth responses highlight the potential for differences in plant–soil interactions among plant species to influence local plant distributions and community dynamics. Janzen–Connell effects, like those observed in T. dioicum and E. hystrix, could promote coexistence among certain species and contribute to high local plant diversity in temperate forest understories. Numéro de notice : A2021-730 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1007/s11258-021-01173-x Date de publication en ligne : 23/08/2021 En ligne : https://doi.org/10.1007/s11258-021-01173-x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=98674 [article]

Exceedance of critical loads and of critical limits impacts tree nutrition across Europe / Peter Waldner in Annals of Forest Science, vol 72 n° 7 (October 2015)  

Public [article]  inAnnals of Forest Science > vol 72 n° 7 (October 2015) . - pp 929 - 939 Titre : Exceedance of critical loads and of critical limits impacts tree nutrition across Europe Type de document : Article/Communication Auteurs : Peter Waldner, Auteur ; Anne Thimonier, Auteur ; Elisabeth Graf Pannatier, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 929 - 939 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation [Termes IGN] acidification des sols [Termes IGN] eutrophisation [Termes IGN] nutrition végétale [Termes IGN] pollution des sols [Termes IGN] relations plante - sol Résumé : (auteur) Key message : Exceedance of critical limits in soil solution samples was more frequent in intensively monitored forest plots across Europe with critical loads for acidity and eutrophication exceeded compared to other plots from the same network. Elevated inorganic nitrogen concentrations in soil solution tended to be related to less favourable nutritional status. Context : Forests have been exposed to elevated atmospheric deposition of acidifying and eutrophying sulphur and nitrogen compounds for decades. Critical loads have been identified, below which damage due to acidification and eutrophication are not expected to occur. Aims : We explored the relationship between the exceedance of critical loads and inorganic nitrogen concentration, the base cation to aluminium ratio in soil solutions, as well as the nutritional status of trees. Methods : We used recent data describing deposition, elemental concentrations in soil solution and foliage, as well as the level of damage to foliage recorded at forest plots of the ICP Forests intensive monitoring network across Europe. Results : Critical loads for inorganic nitrogen deposition were exceeded on about a third to half of the forest plots. Elevated inorganic nitrogen concentrations in soil solution occurred more frequently among these plots. Indications of nutrient imbalances, such as low magnesium concentration in foliage or discolouration of needles and leaves, were seldom but appeared more frequently on plots where the critical limits for soil solution were exceeded. Conclusion : The findings support the hypothesis that elevated nitrogen and sulphur deposition can lead to imbalances in tree nutrition. Numéro de notice : A2015-720 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1007/s13595-015-0489-2 Date de publication en ligne : 01/10/2015 En ligne : https://doi.org/10.1007/s13595-015-0489-2 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78370 [article]

Abundance response of western European forest species along canopy openness and soil pH gradients / Rosalinde van Couwenberghe in Forest ecology and management, vol 262 n° 8 ([15/10/2011])  

Public [article]  inForest ecology and management > vol 262 n° 8 [15/10/2011] . - pp 1483 - 1490 Titre : Abundance response of western European forest species along canopy openness and soil pH gradients Type de document : Article/Communication Auteurs : Rosalinde van Couwenberghe, Auteur ; Catherine Collet, Auteur ; Eric Lacombe, Auteur ; Jean-Claude Gégout, Auteur Année de publication : 2011 Article en page(s) : pp 1483 - 1490 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] base de données naturalistes [Termes IGN] composition floristique [Termes IGN] flore locale [Termes IGN] forêt tempérée [Termes IGN] inventaire de la végétation [Termes IGN] régénération (sylviculture) [Termes IGN] relations plante - sol [Vedettes matières IGN] Foresterie Résumé : (auteur) In order to better understand the structure and composition of forest plant communities, we aimed to predict the abundance of understory herbaceous species locally at the stand level and according to different environments. For this, we seeked to model species distributions of abundance at a regional scale in relationship with the local stand structure (canopy openness) and regional soil resources (soil pH). Floristic inventories, performed in different light and soil conditions located in 1202 records of north eastern France, were used to analyze the combined effect of canopy openness and soil pH on the abundance of 12 common western European forest species: Anemone nemorosa, Deschampsia flexuosa, Festuca altissima, Hedera helix, Lamium galeobdolon, Lonicera periclymenum, Molinia caerulea, Oxalis acetosella, Pteridium aquilinum, Rubus fruticosus, Rubus idaeus, and Vaccinium myrtillus. Ordinal regression models relating species abundance responses to their environment were developed. For most species (eight out of 12), distribution was significantly affected by canopy openness and soil pH. Differences among low-abundance (i.e. cover 25%) responses were noted for 11 species along the canopy openness gradient and four species along the pH gradient. The present study quantifies optimal light and soil nutrient requirements for high-abundance responses and quantifies light and soil nutrients tolerance conditions for low-abundance responses. The combination of both factors highlights the pre-eminence of pH conditions occurrence and canopy openness for species abundance. The models developed by this study may be used to define canopy openness thresholds in function of soil characteristics to control the development of species during forest regeneration. The species-specific reactions on local canopy openness along a regional soil gradient illustrate the need for a species-specific management approach. Numéro de notice : A2011-564 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article DOI : 10.1016/j.foreco.2011.06.049 En ligne : https://doi.org/10.1016/j.foreco.2011.06.049 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76393 [article]

Leaf water status and stem xylem flux in relation to soil drought in five temperate broad-leaved tree species with contrasting water use strategies / Paul Köcher in Annals of Forest Science, Vol 66 n° 1 (January - February 2009)  

Public [article]  inAnnals of Forest Science > Vol 66 n° 1 (January - February 2009) . - n° 101 Titre : Leaf water status and stem xylem flux in relation to soil drought in five temperate broad-leaved tree species with contrasting water use strategies Titre original : Statut hydrique des feuilles et flux xylèmique dans le tronc en relation avec la sécheresse du sol pour cinq espèces d'arbres feuillus tempérés à stratégies de consommation d'eau différentes Type de document : Article/Communication Auteurs : Paul Köcher, Auteur ; Tobias Gebauer, Auteur ; Viviana Horna, Auteur ; Christoph Leuschner, Auteur Année de publication : 2009 Article en page(s) : n° 101 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation [Termes IGN] arbre caducifolié [Termes IGN] nutrition végétale [Termes IGN] peuplement mélangé [Termes IGN] relations plante - sol [Termes IGN] sève [Termes IGN] tronc Résumé : (auteur) Five temperate broad-leaved tree species were compared with respect to their water consumption strategies under ample and restricted water supply. We measured synchronously leaf conductance $(g_{\rm L})$ in the sun canopy, xylem sap flux $(J_{\rm s})$ and leaf water potential (predawn, $\Psi _{\rm pd}$ and noon, $\Psi _{\rm noon}$) in adult trees in a mixed stand and related them to the fluctuations in vapor pressure deficit (D) and soil moisture. • Maximum $g_{\rm L}$ was particularly high in F. excelsior, C. betulus and T. cordata and revealed a higher D sensitivity. $\Psi _{\rm pd}$ remained constantly high in A. pseudoplatanus, C. betulus and F. excelsior, but decreased in T. cordata and F. sylvatica with decreasing soil moisture. • $J_{\rm sd}$ decreased linearly with decreasing soil matrix potential in all species except for F. excelsior. Apparent hydraulic conductance in the soil-to-leaf flow path $(L_{\rm c})$ was higher in A. pseudoplatanus than in the other species. • F. sylvatica maintained a low maximum $g_{\rm L}$ and reduced $J_{\rm sd}$ markedly upon drought, but faced severe decreases in $\Psi _{\rm pd}$ and $\Psi _{\rm noon}$. F. excelsior represents an opposite strategy with high maximum $g_{\rm L}$ and stable $\Psi _{\rm pd}$. • The species drought sensitivity increases in the sequence F. excelsior Numéro de notice : A2009-723 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest/2008076 Date de publication en ligne : 31/01/2009 En ligne : https://www.afs-journal.org/articles/forest/abs/2009/01/f08128/f08128.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=71759 [article]

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-DIR-P000294	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt

Relations croissance du Chêne pédonculé et climat sur deux types de sol à nappe temporaire en lorraine (rédoxisol acide et pélosol différencié) / François Lebourgeois in Revue forestière française, vol 60 n° 4 (juillet - août 2008)  

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Présentation d'un modèle de transfert couplé de masse et de chaleur dans le système sol-végétation-atmosphère pour les zones arides et semi-arides / Abdelghani Chehbouni (1992)

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