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Root functional parameters along a land-use gradient: evidence of a community-level economics spectrum / Iván Prieto in Journal of ecology, 103 (2015)
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Titre : Root functional parameters along a land-use gradient: evidence of a community-level economics spectrum Type de document : Imprimé Auteurs : Iván Prieto ; Catherine Roumet ; Remi Cardinael ; Christian Dupraz ; Christian Jourdan ; John H. Kim ; Jean Luc Maeght ; Zhun Mao ; Alain Pierret ; Noelia Portillo ; Olivier Roupsard ; Chantanousone Thammahacksa ; Alexia Stockes Année de publication : 2015 Article en page(s) : 361-373 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Restauration des écosystèmes
[CBNPMP-Thématique] RevégétalisationRésumé : 1 There is a fundamental trade-off between leaf traits associated with either resource acquisition or resource conservation. This gradient of trait variation, called the economics spectrum, also applies to fine roots, but whether it is consistent for coarse roots or at the plant community level remains untested. 2 We measured a set of morphological and chemical root traits at a community level (functional parameters; FP) in 20 plant communities located along land-use intensity gradients and across three climatic zones (tropical, mediterranean and montane). We hypothesized (i) the existence of a root economics spectrum in plant communities consistent within root types (fine, < 2 mm; coarse, 2–5 mm), (ii) that variations in root FP occur with soil depths (top 20 cm of soil and 100–150 cm deep) and (iii) along land-use gradients. Root FP covaried, in line with the resource acquisition–conservation trade-off, from communities with root FP associated with resource acquisition (e.g. high specific root length, SRL; thin diameters and low root dry matter contents, RDMC) to root FP associated with resource conservation (e.g. low SRL, thick diameters and high RDMC). This pattern was consistent for both fine and coarse roots indicating a strong consistency of a trade-off between resource acquisition and conservation for plant roots. 3 Roots had different suites of traits at different depths, suggesting a disparity in root function and exploitation capacities. Shallow, fine roots were thinner, richer in nitrogen and with lower lignin concentrations associated with greater exploitation capacities compared to deep, fine roots. Shallow, coarse roots were richer in nitrogen, carbon and soluble concentrations than deep, coarse roots. 4 Fine root parameters of highly disturbed, herbaceous-dominated plant communities in poorer soils were associated with foraging strategies, that is greater SRL and lower RDMC and lignin concentration than those from less disturbed communities. Coarse roots, however, were less sensitive to the land-use gradient. 5 Synthesis. This study demonstrates the existence of a general trade-off in root construction at a community level, which operates within all root types, suggesting that all plant tissues are controlled by the trade-off between resource acquisition and conservation.
Lien pérenne : DOI : 10.1111/1365-2745.12351 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148818
in Journal of ecology > 103 (2015) . - 361-373Prieto, Iván, Roumet, Catherine, Cardinael, Remi, Dupraz, Christian, Jourdan, Christian, Kim, John H., Maeght, Jean Luc, Mao, Zhun, Pierret, Alain, Portillo, Noelia, Roupsard, Olivier, Thammahacksa, Chantanousone, Stockes, Alexia 2015 Root functional parameters along a land-use gradient: evidence of a community-level economics spectrum. Journal of ecology, 103: 361-373.Documents numériques
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Article (2015)URL Routes de montagne et environnement. Actes du colloque d'Aix les Bains du 17 au 19 Novembre 1987. / Savoie, Conseil général (1987)
Titre : Routes de montagne et environnement. Actes du colloque d'Aix les Bains du 17 au 19 Novembre 1987. Type de document : Imprimé Auteurs : Savoie Conseil général ; France Ministère de l’environnement (1984-1988) Année de publication : 1987 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Revégétalisation Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=76649 Savoie Conseil général, France Ministère de l’environnement (1984-1988) , 1987. Routes de montagne et environnement. Actes du colloque d'Aix les Bains du 17 au 19 Novembre 1987. , .Safe sites-interface of plant population ecology and restoration ecology / Krystyna M. Urbanska (1997)
Titre : Safe sites-interface of plant population ecology and restoration ecology Type de document : Extrait d'ouvrage Auteurs : Krystyna M. Urbanska (1935-) Année de publication : 1997 Importance : p. 81-110 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=85365 Urbanska, Krystyna M. (1935-) 1997 Safe sites-interface of plant population ecology and restoration ecology. In: Restoration ecology and sustainable development. Cambridge University Press, Cambridge: 81-110.Salvere : a project to learn, how to obtain seed of native species from semi-natural grassland / Michele Scotton (2011)
est un extrait de Conference proceedings : International conference " Using species rich semi-natural grassland to obtain seed for the restoration of degraded areas ", Agricultural faculty, Legnaro (PD, Italy) 21-22.09 2011 / Semi-natural grassland as a source of biodiversity improvement (SALVERE) (2011)
Titre : Salvere : a project to learn, how to obtain seed of native species from semi-natural grassland Type de document : Extrait d'ouvrage Auteurs : Michele Scotton Année de publication : 2011 Importance : p. 5-12 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=85708 Scotton, Michele 2011 Salvere : a project to learn, how to obtain seed of native species from semi-natural grassland. In: Conference proceedings : International conference " Using species rich semi-natural grassland to obtain seed for the restoration of degraded areas ", Agricultural faculty, Legnaro (PD, Italy) 21-22.09 2011. University of Padova : Department of Environmental Agronomy and Crop Production, [S.l.]: 5-12.
Titre : Sampling vegetation attributes, Interagency technical reference Type de document : Électronique Année de publication : 1996 Importance : 171 p. Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150674 , 1996. Sampling vegetation attributes, Interagency technical reference. , . 171 pp.Documents numériques
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PermalinkSeed dormancy in native alpine plants and importance of the seed pretreatment to high altitude revegetation / M. Schuetz (1990)
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PermalinkSeed sourcing for restoration in an era of climate change / Kayri Havens in Natural Areas Journal, 35 (1) (2015)
PermalinkSemences et Droit. L'emprise d'un modèle économique dominant sur une réglementation sectorielle / Shabnam Laure Anvar (2008)
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