2024-03-29T09:21:57Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1156852016-08-19T09:00:23Zcom_10261_16com_10261_8com_10261_15com_10261_6col_10261_269col_10261_268
Relationships between specific leaf area and leaf composition in succulent and non-succulent species of contrasting semi-desert communities in south-eastern Spain
Grubb, Peter J.
Marañón, Teodoro
Pugnaire, Francisco I.
Sack, Lawren
Salt accumulation
Nutrient concentrations
N/P quotients
Functional traits
Semi-desert
SLA
Spain
Leaf economics
15 páginas.-- 6 figuras.-- 6 tablas.-- 60 referencias.-- Supplementary data related to this article can be found at http://dx.doi.org/10.1016/j.jaridenv.2015.03.001. or http://www.sciencedirect.com/science/article/pii/S0140196315000671#ec1
© 2015 Elsevier Ltd. Much attention has been paid to differences in leaf form and composition among vegetation types, but less to the frequently substantial variation within vegetation types. We focused on the extent to which correlations between variables are the same in both succulent-poor and succulent-rich vegetation in semi-arid SE Spain. Mean foliar [N] of perennials varied among species over a 5-fold range. Across species, [N] was positively correlated with specific leaf area (i.e., leaf area divided by dry mass; SLA) and with water concentration at saturation (WCS) in the grasslands, excluding the one succulent species. In succulent-rich vegetation on marl, SLA was correlated with [N] but not WCS, and there was a wedge-shaped relationship between [N] and WCS. Foliar [N] and [P] were positively correlated in the grasslands, but not in succulent-rich vegetation on marl. The N/P quotient varied from 8 to 29, with mean 14 in grassland on limestone and mean 26 in grassland on deep soil over gypsum. Our chief finding is that most correlations among SLA, WCS, [N] and [P] found in the non-succulent vegetation are not found in the succulent-rich vegetation. The results are discussed in relation to global patterns and the problems of defining succulence.
Thank the Consejería de Medio Ambiente, Junta de Andalucía for permission to collect plant samples. Glyn Jones at the University of Cambridge did the chemical analyses of leaves; the Servicio de Análisis at IRNAS, CSIC, Sevilla analyzed the whole shoots and soil samples, thanks to L.V. García for his help and advice. Funds to make this study were provided by the Spanish Ministry of Science (projects PB97-1177, CGL2010-17081 and DiverbosCGL2011-30285-C02) and European FEDER.
Peer Reviewed
2015-05-25T08:53:25Z
2015-05-25T08:53:25Z
2015-03
2015-05-25T08:53:25Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1016/j.jaridenv.2015.03.001
issn: 1095-922X
Journal of Arid Environments 118: 69- 83 (2015)
http://hdl.handle.net/10261/115685
10.1016/j.jaridenv.2015.03.001
http://dx.doi.org/10.1016/j.jaridenv.2015.03.001
none
Elsevier