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Artículo

Ameliorative effects of nurse shrubs on soil chemical characteristics are driven by plant size in the Monte desert

Varela, Omar; Varas, Mariana MarcelaIcon ; Rattalino, Donna LuciaIcon ; Crabbè, Franco; Ordano, Mariano AndrésIcon
Fecha de publicación: 08/2017
Editorial: Taylor & Francis
Revista: Arid Land Research And Management
ISSN: 1532-4982
e-ISSN: 1532-4990
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

In deserts, shrubs determine landscape structure and influence plant productivity by creating nutrient-enriched environments. Attributes vary among shrub species, thus their contribution to soil characteristics is expected to vary as well, and nutrient input under shrub cover will depend on species attributes. We propose that plant size determines the contribution to soil chemical characteristics. Therefore, the contribution of larger species will be higher than smaller ones. Also, each species will contribute differentially for each chemical parameter. To corroborate these premises, we measured six soil chemical characteristics in areas covered by shrubs and in bare soil, as well as among five nurse species, in four sites of the Monte desert (La Rioja, Argentina). A multivariate analysis of variance (MANOVA) indicated significant variation between cover conditions and locations. Supporting previous studies, the presence of shrubs improved soil properties. Chemical concentration between soils under shrubs and bare soils, respectively, showed as mean and (SD) were: carbon(%): 0.82 (0,47), 0.52 (0.22); nitrates (ppm): 33,33 (67,36), 2.63 (0.56); phosphorous(ppm): 16.76 (25.02), 6.56 (1.92); electrical conductivity (dS m−1): 0.24 (0,43), 0.03 (0,02); pH: 6.93 (0.56), 7.62 (0.53); and water content (%): 3,17 (8.94), 2.47 (9.15). Chemical characteristics also varied according to the nurse species. Larger nurse species affected the ensemble of chemical characteristics, after controlling for cover condition and site. Larger plant species (Bulnesia retama, Prosopis torquata, and Zuccagnia punctata) were significantly associated with higher carbon and higher nitrates concentration. These results suggest that soil properties are enhanced by the size of nurse plant species.
Palabras clave: Arid Ecosystems , Nurse Plants , Plant-Soil Relationships , Soil Properties
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/41154
DOI: http://dx.doi.org/10.1080/15324982.2017.1340359
URL: https://www.tandfonline.com/doi/abs/10.1080/15324982.2017.1340359
Colecciones
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
Varela, Omar; Varas, Mariana Marcela; Rattalino, Donna Lucia; Crabbè, Franco; Ordano, Mariano Andrés; Ameliorative effects of nurse shrubs on soil chemical characteristics are driven by plant size in the Monte desert; Taylor & Francis; Arid Land Research And Management; 31; 4; 8-2017; 418-430
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