Artículo
Double Sampling Methods in Biomass Estimates of Andean Shrubs and Tussocks
Fecha de publicación:
11/2017
Editorial:
Society for Range Management
Revista:
Rangeland Ecology and Management
ISSN:
1550-7424
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The natural Andean vegetation environment is the most important resource available to local pastoralist economies. Knowledge of its attributes is vital in assessing ecosystem properties and improves management decision making. However, there is a lack of research on models that estimate species and life-form biomass for the Puna. We developed a series of models that facilitated the estimation of biomass while avoiding the direct harvesting of the most representative Puna steppe plant species in Jujuy, Argentina. The models thus developed are useful tools in the evaluation of changes in ecosystem dynamics through time and space. Allometric equations were developed for the dominant shrubs (Baccharis boliviensis, Fabiana densa, Parastrephia quadrangularis, Tetraglochin cristatum, Ocyroe armata, and Adesmia sp.) and tussock grasses (Jarava ichu, Festuca crysophylla, and Cenchrus chilense). A field record of the maximum diameter, perpendicular diameter, and height of each plant; number of individuals per plot; and tussock grasses and shrub cover across all vegetation communities was undertaken. Linear regressions including plant measures demonstrated a good fit (R2 > 0.7, P < 0.001) to the biomass for individual plants and surface area. The predictive equations developed allow for the rapid and accurate estimation of shrub and tussock biomass. This is essential to monitor the effects of grazing for impact assessment of the different management practices and vegetation dynamics.
Palabras clave:
Biomass
,
Puna
,
Shrubs
,
Tussocks
,
Vegetation
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(INECOA)
Articulos de INSTITUTO DE ECORREGIONES ANDINAS
Articulos de INSTITUTO DE ECORREGIONES ANDINAS
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Rojo, Veronica; Arzamendia, Yanina; Pérez, C.; Baldo, Jorge Luis; Vila, Bibiana Leonor; Double Sampling Methods in Biomass Estimates of Andean Shrubs and Tussocks; Society for Range Management; Rangeland Ecology and Management; 70; 6; 11-2017; 718-722
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