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Light and soil moisture effects on biomass and its allocation of Osmorhiza depauperata Philippi (Apiaceae)
- Publication Year :
- 2013
- Publisher :
- Springer Tokyo, 2013.
-
Abstract
- Changes in forest openings affect light quality and quantity, and the magnitude of rainfall that reaches the soil surface. Osmorhiza depauperata, a geophyte, acclimates to changes imposed because of forest openings. We studied which changes in biomass allocation allow acclimation of O. depauperata to the various environments that this species inhabits, and where it develops better. Three light intensities (I4 = 4 %, I26 = 26 %, I64 = 64 % of ambient sunlight) and two moisture levels (M40 = 40–60 %, M80 = 80–100 % field capacity) were evaluated on O. depauperata under greenhouse conditions. Plant biomasses per pot were 0.81, 0.56 and 0.48 g at I26, I4 and I64 light intensities, respectively, after one growing season. The biomass allocation to aboveground tissues and leaf area decreased as light intensity increased. Soil moisture modified only belowground biomass and weight of fine roots. The interaction between soil moisture content and light intensity was consistent. This was because of a signifi- cant reduction in total plant biomass under high both soil moisture content and high light intensity. Osmorhiza depauperata growth was favored most at medium light intensities. Changes in biomass allocation among various organs allow this species to inhabit forest habitats with different light intensities. Fil: Selzer, Luciano Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Lencinas, María Vanessa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Martínez Pastur, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Busso, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida(i); Argentina
- Subjects :
- Biomass (ecology)
Moisture
biology
LIGTH INTENSITY
Growing season
biology.organism_classification
Acclimatization
Osmorhiza depauperata
BIOMASS
Field capacity
Ciencias Biológicas
Light intensity
Agronomy
OSMORHIZA DEPAUPERATA
SOIL MOISTURE
Environmental science
LEAF AREA
Water content
BIOMASS ALLOCATION
Ecology, Evolution, Behavior and Systematics
Ciencias de las Plantas, Botánica
CIENCIAS NATURALES Y EXACTAS
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....c6cadb116e2d1ba62d3ddb30d31c9971