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Termes IGN > environnement > écologie > adaptation (biologie)
adaptation (biologie)
Commentaire :
écologie. >> adaptation, variabilité, évolution (biologie), hérédité des caractères acquis, homologie (biologie), stress. >>Terme(s) spécifique(s) : stratégie anti-prédatrice, acclimatation, adaptation (physiologie), adaptation à la vie terrestre, compétition (biologie), résistance à la chaleur, résistance à la pollution, résistance à la sécheresse, résistance au froid, résistance aux pesticides. Equiv. LCSH : Adaptation (Biology). Domaine(s) : 570. |
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Norway spruce seedlings from an Eastern Baltic provenance show tolerance to simulated drought / Roberts Matisons in Forests, vol 12 n° 1 (January 2021)
Titre : Norway spruce seedlings from an Eastern Baltic provenance show tolerance to simulated drought Type de document : Article/Communication Auteurs : Roberts Matisons, Auteur ; Oskars Krišāns, Auteur ; Aris Jansons, Auteur ; et al., Auteur Année de publication : 2021 Article en page(s) : n° 82 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] adaptation (biologie)
[Termes IGN] analyse de sensibilité
[Termes IGN] chlorophylle
[Termes IGN] état du sol
[Termes IGN] irrigation
[Termes IGN] Lettonie
[Termes IGN] photosynthèse
[Termes IGN] Picea abies
[Termes IGN] sécheresse
[Termes IGN] stress hydrique
[Vedettes matières IGN] Végétation et changement climatiqueRésumé : (auteur) In Northern Europe, an increase in heterogeneity of summer precipitation regime will subject forests to water deficit and drought. This is particularly topical for Norway spruce (Picea abies Karst.), which is a drought sensitive, yet economically important species. Nevertheless, local populations still might be highly plastic and tolerant, supporting their commercial application. Accordingly, the tolerance of Norway spruce seedlings from an Eastern Baltic provenance (western part of Latvia) to artificial drought according to soil type was assessed in a shelter experiment. To simulate drought, seedlings were subjected to reduced amounts (0%, 25%, 50%, 75%, and 100%) of naturally occurring precipitation (irrigation intensity). Three soil types (oligotrophic mineral, mesotrophic mineral, and peat) were tested. Seedling height, chlorophyll a concentration, and fluorescence parameters were measured. Both growth and photochemical reactions were affected by the irrigation intensity, the effect of which experienced an interacted with soil type, implying complex controls of drought sensitivity. Seedlings were more sensitive to irrigation intensity on mesotrophic mineral soil, as suggested by growth and photosynthetic activity. However, the responses were nonlinear, as the highest performance (growth and fluorescence parameters) of seedlings occurred in response to intermediate drought. On peat soil, which had the highest water-bearing capacity, an inverse response to irrigation intensity was observed. In general, fluorescence parameters were more sensitive and showed more immediate reaction to soil water deficit than concentration of chlorophyll on mesotrophic mineral and peat soils, while the latter was a better indicator of seedling performance on oligotrophic soil. This indicated considerable plastic acclimation and hence tolerance of seedlings from the local Norway spruce population to drought, though drought sensitivity is age-dependent. Numéro de notice : A2021-145 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.3390/f12010082 date de publication en ligne : 14/01/2021 En ligne : https://doi.org/10.3390/f12010082 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97048
in Forests > vol 12 n° 1 (January 2021) . - n° 82[article]
Titre : Does recent fire activity impact fire-related traits of Pinus halepensis Mill. and Pinus sylvestris L. in the French Mediterranean area? Type de document : Article/Communication Auteurs : Bastien Romero, Auteur ; Anne Ganteaume, Auteur Année de publication : 2020 Article en page(s) : n° 106 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] adaptation (biologie)
[Termes IGN] écosystème
[Termes IGN] forêt méditerranéenne
[Termes IGN] France (administrative)
[Termes IGN] fréquence
[Termes IGN] génétique forestière
[Termes IGN] incendie de forêt
[Termes IGN] ontogenèse
[Termes IGN] Pinus halepensis
[Termes IGN] Pinus sylvestris
[Termes IGN] résilience écologique
[Vedettes matières IGN] Végétation et changement climatiqueRésumé : (auteur) Key message: Climate change will induce a change in fire frequency in Mediterranean region and that could impact fire-adapted plant species. We showed that fire-related traits of some pine species are strongly related to other factors than fire but the recent fire history has nonetheless an impact on the variation of key traits for different fire adaptive strategies.
Context: In fire-prone Mediterranean areas, climate change is expected to exacerbate the fire pressure on ecosystems, altering the current fire regime and threatening species if they cannot acclimate.
Aims: Studying intraspecific variations of some fire-related traits in relation to variation in recent fire activity is thus an important step to better understand if this acclimation is possible.
Methods: We measured structural (bark thickness, shoot bulk density, self-pruning, leaf surface to volume ratio) and functional (serotiny level for Pinus halepensis only) traits in two pines species (Pinus halepensis and Pinus sylvestris) commonly found in southeastern France and that present different fire-adaptive strategies (resilience vs resistance, respectively). Populations were sampled according to different fire frequency modalities (0 vs 1 to 2 fires) along a geographical gradient, measuring numerous environmental and plant characteristics to be used cofactors in the analyses.
Results: As expected, trait variation was strongly linked to environmental and tree characteristics as well as to ontogeny overriding the effect of fire modalities, even though using integrative models with random effect. However, fire modalities had an impact on the variance of some key fire-related traits of Pinus halepensis.
Conclusion: This study will help to anticipate the future response of these Mediterranean pine species and further underlines the importance of investigating chemical traits, flammability, and genetic variation of highly heritable traits, such as serotiny.Numéro de notice : A2020-722 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s13595-020-01016-1 date de publication en ligne : 16/11/2020 En ligne : https://doi.org/10.1007/s13595-020-01016-1 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96320
in Annals of Forest Science [en ligne] > vol 77 n° 4 (December 2020) . - n° 106[article]Climaq info (2010-)
Titre : Climaq info : lettre d'information à l'usage des sylviculteurs, des acteurs forestiers et des usagers des forêts d'Aquitaine Type de document : Périodique Editeur : Bordeaux [France] : CRPF d'Aquitaine Année de publication : 2010- Langues : Français (fre) Descripteur : [Termes IGN] adaptation (biologie)
[Termes IGN] changement climatique
[Termes IGN] forêtNuméro de notice : IFN_5567 Affiliation des auteurs : non IGN Nature : Titre de périodique Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=67525
Titre : Changement climatique : l'avenir des forêts françaises en question Type de document : Article/Communication Auteurs : Sabine Girard, Auteur Année de publication : 2009 Article en page(s) : p. 4-5 Langues : Français (fre) Descripteur : [Termes IGN] adaptation (biologie)
[Termes IGN] changement climatique
[Termes IGN] dépérissement
[Termes IGN] phytogéographieRésumé : Face au changement climatique annoncé, les scientifiques étudient la réaction des forêts françaises de près. L'évolution de la répartition géographique des espèces, l'origine des dépérissements et l'adaptation génétique des arbres sont au cœur d'une série de programmes de recherche. Numéro de notice : IFN_3253 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72039
in Le Forestier privé en Rhône-Alpes > n° 36 (avril 2009) . - p. 4-5[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité IFN-001-P000340 PER Revue Nogent-sur-Vernisson Salle périodiques Exclu du prêt
Titre : Potential indicators of soil quality in temperate forest ecosystems: a case study in the Basque Country Titre original : Indicateurs potentiels de la qualité des sols dans les écosystèmes forestiers tempérés : une étude de cas dans le Pays Basque Type de document : Article/Communication Auteurs : Nahia Gartzia-Bengoetxea, Auteur ; Nahia Gartzia-Bengoetxea, Auteur ; Ander González-Arias, Auteur ; Ellen Kandeler, Auteur ; Inazio Martínez de Arano, Auteur Année de publication : 2009 Article en page(s) : n° 303 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] adaptation (biologie)
[Termes IGN] débardage
[Termes IGN] écosystème forestier
[Termes IGN] indicateur de biodiversité
[Termes IGN] Pays basque (Espagne)
[Termes IGN] qualité du sol
[Vedettes matières IGN] Ecologie forestièreRésumé : (auteur) Assessment of forest sustainability requires reliable soil quality indicators. The present study evaluated the use of several potential such indicators in forests in the Basque Country under different types of management, involving: (i) species change and (ii) heavily mechanised forest operations. Five adjacent forest stands were selected for study: (i) two unmanaged forests (Quercus robur, Fagus sylvatica) and one (40-year-old) Pinus radiata plantation, to investigate the effect of species change; and (ii) a chronosequence of mechanised radiata pine plantations (3 and 16 years old), to investigate heavy mechanisation. Several physical, chemical and biological parameters were analysed in the mineral soil. Species change could not be assessed with chemical parameters, but parameters related to organic matter indicated the disturbance caused by heavy mechanisation. The Least Limiting Water Range was a good indicator of soil physical degradation induced by heavy mechanisation. Biological parameters proved sensitive indicators: (i) the fungal phospholipid fatty acid biomarker 18:2ω6 for species change; and (ii) the ratio of Gram-positive/Gram-negative bacteria for heavy mechanisation. Nevertheless, these parameters are complementary, and monitoring programmes should include physical, chemical and biological parameters. Further studies are required to assess natural boundaries of variation in soil quality indicators, and their resistance and resilience. Numéro de notice : A2009-706 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1051/forest/2009008 date de publication en ligne : 07/04/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/03/f08073/f08073.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72058
in Annals of Forest Science > Vol 66 n° 3 (April - May 2009) . - n° 303[article]PermalinkPermalink
