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Leaching of nitrate and ammonium in heathland and forest ecosystems in Northwest Germany under the influence of enhanced nitrogen deposition / Martina Herrmann in Plant and soil, vol. 273 (Année 2005)
[article]
Titre : Leaching of nitrate and ammonium in heathland and forest ecosystems in Northwest Germany under the influence of enhanced nitrogen deposition Type de document : texte imprimé Auteurs : Martina Herrmann, Auteur ; Jürgen Pust, Auteur ; Richard Pott, Auteur Année de publication : 2005 Article en page(s) : pp. 129–137 Langues : Anglais (eng) Catégories : [ZG] Allemagne Use for events before 1949 and after October 1990.
[habitats/milieux] 31 - Landes et fruticées
[habitats/milieux] 44 - Forêts riveraines, forêts et fourrés très humides
[Espèces (in biblio)] Betula pubescens
[Espèces (in biblio)] Calluna vulgaris
[Espèces (in biblio)] Erica tetralix
[Espèces (in biblio)] Molinia caerulea
[Espèces (in biblio)] Quercus
[Thèmes] Relation sol - végétationMots-clés : eau souterraine dépôt d'azote eau d'infiltration Résumé : "To study the impact of high atmospheric nitrogen deposition on the leaching of NO −3 and NH +4 beneath forest and heathland vegetation, investigations were carried out in adjacent forest and heathland ecosystems in Northwest Germany. The study area is subjected to high deposition of nitrogen ranging from 15.9 kg ha−1 yr−1 in bulk precipitation to 65.3 kg ha−1 yr−1 beneath a stand of Pinus sylvestris L. with NH4–N accounting for 70–80% of the nitrogen deposited. Considerable leaching of nitrogen compounds from the upper horizons of the soil, mostly as nitrate, occurred at most of the forest sites and below a mixed stand of Calluna vulgaris (L.) Hull. and Erica tetralix, but was low in a Betula pubescens Ehrh. swamp forest as well as beneath Erica tetralix L. wet heath and heath dominated by Molinia caerulea (L.) Moench. Ground water concentrations of both NO3–N and NH4–N did not exceed 1 mg L−1 at most of the sites investigated." (source : auteurs) Type de publication : périodique Référence biblio : Herrmann M., Pust J., Pott R., 2005 - Leaching of nitrate and ammonium in heathland and forest ecosystems in Northwest Germany under the influence of enhanced nitrogen deposition. Plant and soil, 273 : 129–137. ID PMB : 70412 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=70412
in Plant and soil > vol. 273 (Année 2005) . - pp. 129–137[article]Exemplaires(0)
Disponibilité aucun exemplaire Long-term community change : bryophytes are more responsive than vascular plants to nitrogen deposition and warming / Antoine Becker Scarpitta in Journal of Vegetation Science, vol. 28, n°6 (Année 2017)
[article]
Titre : Long-term community change : bryophytes are more responsive than vascular plants to nitrogen deposition and warming Type de document : texte imprimé Auteurs : Antoine Becker Scarpitta, Auteur ; Jacques Bardat, Auteur ; Arnault Lalanne, Auteur ; Mark Vellend, Auteur Année de publication : 2017 Article en page(s) : pp. 1220-1229 Langues : Anglais (eng) Catégories : [Thèmes] Bryophytes
[Thèmes] Flore vasculaire (phanérogames et cryptogames vasculaires)
[ZG] NORMANDIEMots-clés : écologie communautaire changement climatique suivi à long terme analyse multivariée dépôt d'azote écologie végétale Résumé : "We observed significantly increased species richness of bryophytes and decreased richness of vascular plants. Community affinities to N, pH and temperature increased significantly for bryophytes, but not for vascular plants, although the change over time in N affinities for vascular plants was qualitatively in the predicted direction. Bryophytes showed a higher magnitude of temporal community change than vascular plants, both in terms of overall species composition and environmental affinities, indicating a higher responsiveness of bryophytes to environmental change." (source : auteurs) Type de publication : périodique Référence biblio : Becker Scarpitta A., Bardat J., Lalanne A., Vellend M., 2017 - Long-term community change : bryophytes are more responsive than vascular plants to nitrogen deposition and warming. Journal of Vegetation Science, 28 (6) : 1220-1229. Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66347
in Journal of Vegetation Science > vol. 28, n°6 (Année 2017) . - pp. 1220-1229[article]Exemplaires(0)
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