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Impact of management on nutrients, carbon, and energy in aboveground biomass components of mid-rotation loblolly pine (pinus taeda L.) plantations / Dehai Zhao in Annals of Forest Science, vol 71 n° 8 (December 2014)  

Public [article]  inAnnals of Forest Science > vol 71 n° 8 (December 2014) . - pp 843 - 851 Titre : Impact of management on nutrients, carbon, and energy in aboveground biomass components of mid-rotation loblolly pine (pinus taeda L.) plantations Type de document : Article/Communication Auteurs : Dehai Zhao, Auteur ; Michael Kane, Auteur ; Robert Teskey, Auteur ; et al., Auteur Année de publication : 2014 Article en page(s) : pp 843 - 851 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation [Termes IGN] nutrition végétale [Termes IGN] pineraie [Termes IGN] Pinus taeda [Termes IGN] puits de carbone [Termes IGN] récolte de bois Résumé : (Auteur) Context : To sustainably manage loblolly pine plantations for bioenergy and carbon sequestration, accurate information is required on the relationships between management regimes and energy, carbon, and nutrient export. Aims : The effects of cultural intensity and planting density were investigated with respect to energy, carbon, and essential nutrients in aboveground biomass of mid-rotation loblolly pine plantations, and the effects of harvesting scenarios on export of nutrients were tested. Methods : Destructive biomass sampling of a 12 years-old loblolly pine culture/density experiment, and analysis of variance were used to assess the effects of cultural intensity (operational vs. intensive) and six planting densities ranging from 741 to 4,448 trees ha−1. Two harvesting scenarios (stem-only vs. whole-tree harvesting) were assessed in terms of energy, carbon, and nutrient export. Results : The concentrations of energy, carbon, and nutrients varied significantly among stem wood, bark, branch, and foliage components. Cultural intensity and planting density did not significantly affect these concentrations. Differences in energy, carbon and nutrient contents among treatments were mainly mediated by changes in total biomass. Nutrient contents were affected by either cultural intensity or planting density, or both. Stem-only harvesting removed 71–79% of aboveground energy and carbon, 29–45% of N, 28–44% of P, 44–57% of K, 51–65% of Ca, and 50–61% of Mg. Conclusions : Stem-only harvesting would be preferred to whole-tree harvesting, from a site nutrient conservation perspective. Numéro de notice : A2014-579 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1007/s13595-014-0384-2 Date de publication en ligne : 22/05/2014 En ligne : https://doi.org/10.1007/s13595-014-0384-2 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74769 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
016-2014081	SL	Revue	Centre de documentation	Revues en salle	Disponible

Post-fire selective thinning of Arbutus unedo L. coppices keeps animal diversity unchanged: the case of ants / Lidia Quevedo in Annals of Forest Science, vol 71 n° 8 (December 2014)  

Public [article]  inAnnals of Forest Science > vol 71 n° 8 (December 2014) . - pp 897 - 905 Titre : Post-fire selective thinning of Arbutus unedo L. coppices keeps animal diversity unchanged: the case of ants Type de document : Article/Communication Auteurs : Lidia Quevedo, Auteur ; Xavier Arnan, Auteur ; Olga Boet, Auteur ; et al., Auteur Année de publication : 2014 Article en page(s) : pp 897 - 905 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation [Termes IGN] Arbutus unedo [Termes IGN] coupe (sylviculture) [Termes IGN] incendie de forêt [Termes IGN] Insecta [Termes IGN] protection de la biodiversité [Termes IGN] taillis [Termes IGN] zone sinistrée Résumé : (Auteur) Context : In the Mediterranean area, different post-fire management strategies are used for coppices of resprouting species to promote a more regular forest structure, enhance plant growth, and reduce fire risk. However, the effects of these management treatments on forest-associated fauna are unknown, which in turn could be limiting their beneficial effects. Aims : The aim of this work was to determine whether forest management of a recently burned area dominated by a vigorous resprouting tree species (Arbutus unedo L.) affects ant communities. Methods : Ant communities, sampled using pitfall traps, were examined from unmanaged and selective thinning coppices of A. unedo. Ants are here used as bioindicators of ecosystem health and surrogates for other animal groups. Results : Very limited effects of these post-fire management strategies on the structure and composition of ant communities were found. The lack of effects could be due to the reported small changes in physical conditions among treatments; or either, the most sensitive ant species to these post-fire management treatments might be the same ones affected by fire and, consequently, the ant species that would potentially be affected most were no longer in the study area. Conclusion : The lack of any significant effects caused by these post-fire management practices on the associated fauna of A. unedo coppices points out the suitability of these treatments in these circumstances. Numéro de notice : A2014-580 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1007/s13595-014-0381-5 Date de publication en ligne : 05/06/2014 En ligne : https://doi.org/10.1007/s13595-014-0381-5 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74770 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
016-2014081	SL	Revue	Centre de documentation	Revues en salle	Disponible