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Abstract:

Several experiments have shown that aboveground net primary productivity increases with plant species richness. The main mechanism proposed to explain this relationship is niche complementarity, which is determined by differences in plant traits that affect resource use. We combined field and laboratory experiments using the most abundant species of the Patagonian steppe to identify which are the traits that determine niche complementarity in this ecosystem. We estimated traits that affect carbon, water, microclimate, and nitrogen dynamics. The most important traits distinguishing among species, from the standpoint of their effects on ecosystem functioning, were potential soil nitrification, rooting depth, and soil thermal amplitude. Additionally, we explored the relationship between trait diversity and aboveground net primary production (ANPP) using a manipulative field experiment. ANPP and the fraction of ANPP accounted for by trait diversity increased with number of traits. The effect of trait diversity decreased as the number of traits increased. Here, the use of traits gave us a mechanistic understanding of niche complementarity in the Patagonian steppe. © 2012 by the Ecological Society of America.

Registro:

Documento: Artículo
Título:Effects of plant species traits on ecosystem processes: Experiments in the Patagonian steppe
Autor:Flombaum, P.; Sala, O.E.
Filiación:Centro de Investigaciones Del Mar y la Atmósfera, Departamento de Ciencias de la Atmósfera y Los Océanos, Pabellón II Piso 2, C1428EGA Buenos Aires, Argentina
Instituto Franco-Argentino Sobre Estudios de Clima y Sus Impactos, CONICET/FCEN-UBA/UMI, Ciudad Universitaria, Pabellón II Piso 2, C1428EGA Buenos Aires, Argentina
School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, United States
School of Sustainability, Arizona State University, Tempe, AZ 85287-4501, United States
Palabras clave:Aboveground net primary production (ANPP); Niche complementarity; Rooting depth; Soil nitrification; Soil thermal amplitude; Trait diversity; nitrogen; abundance; complementarity; experimental study; net primary production; nitrification; resource use; rooting; species richness; steppe; Argentina; article; classification; ecosystem; plant; plant root; soil; species difference; temperature; Argentina; Ecosystem; Nitrogen; Plant Roots; Plants; Soil; Species Specificity; Temperature; Patagonia
Año:2012
Volumen:93
Número:2
Página de inicio:227
Página de fin:234
DOI: http://dx.doi.org/10.1890/11-0722.1
Título revista:Ecology
Título revista abreviado:Ecology
ISSN:00129658
CODEN:ECOLA
CAS:nitrogen, 7727-37-9; Nitrogen, 7727-37-9; Soil
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00129658_v93_n2_p227_Flombaum

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Citas:

---------- APA ----------
Flombaum, P. & Sala, O.E. (2012) . Effects of plant species traits on ecosystem processes: Experiments in the Patagonian steppe. Ecology, 93(2), 227-234.
http://dx.doi.org/10.1890/11-0722.1
---------- CHICAGO ----------
Flombaum, P., Sala, O.E. "Effects of plant species traits on ecosystem processes: Experiments in the Patagonian steppe" . Ecology 93, no. 2 (2012) : 227-234.
http://dx.doi.org/10.1890/11-0722.1
---------- MLA ----------
Flombaum, P., Sala, O.E. "Effects of plant species traits on ecosystem processes: Experiments in the Patagonian steppe" . Ecology, vol. 93, no. 2, 2012, pp. 227-234.
http://dx.doi.org/10.1890/11-0722.1
---------- VANCOUVER ----------
Flombaum, P., Sala, O.E. Effects of plant species traits on ecosystem processes: Experiments in the Patagonian steppe. Ecology. 2012;93(2):227-234.
http://dx.doi.org/10.1890/11-0722.1