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Vegetation productivity in natural vs.cultivated systems along water availability gradients in the dry subtropics
- Source :
- PLoS ONE, Vol 11, Iss 12, p e0168168 (2016), CONICET Digital (CONICET), Consejo Nacional de Investigaciones Científicas y Técnicas, instacron:CONICET, Plos One, Vol.11, no.12, FAUBA Digital (UBA-FAUBA), Universidad de Buenos Aires. Facultad de Agronomía, instacron:UBA-FAUBA, PLoS ONE, PLoS ONE 11 (12) : e0168168 (December 2016), INTA Digital (INTA), Instituto Nacional de Tecnología Agropecuaria, instacron:INTA, e0168168
- Publication Year :
- 2016
- Publisher :
- Public Library of Science (PLoS), 2016.
-
Abstract
- The dry subtropics are subject to a rapid expansion of crops and pastures over vast areas of natural woodlands and savannas. In this paper, we explored the effect of this transformation on vegetation productivity (magnitude, and seasonal and long-term variability) along aridity gradients which span from semiarid to subhumid conditions, considering exclusively those areas with summer rains (>66%). Vegetation productivity was characterized with the proxy metric "Enhanced Vegetation Index" (EVI) (2000 to 2012 period), on 6186 natural and cultivated sampling points on five continents, and combined with a global climatology database by means of additive models for quantile regressions. Globally and regionally, cultivation amplified the seasonal and inter-annual variability of EVI without affecting its magnitude. Natural and cultivated systems maintained a similar and continuous increase of EVI with increasing water availability, yet achieved through contrasting ways. In natural systems, the productivity peak and the growing season length displayed concurrent steady increases with water availability, while in cultivated systems the productivity peak increased from semiarid to dry-subhumid conditions, and stabilized thereafter giving place to an increase in the growing season length towards wetter conditions. Our results help to understand and predict the ecological impacts of deforestation on vegetation productivity, a key ecosystem process linked to a broad range of services. Fil: Baldi, Germán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi"; Argentina Fil: Texeira González, Marcos Alexis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina Fil: Murray, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi"; Argentina. Instituto Nacional de Tecnología Agropecuaria; Argentina Fil: Jobbagy Gampel, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi"; Argentina
- Subjects :
- 0106 biological sciences
Atmospheric Science
010504 meteorology & atmospheric sciences
DATA BASE DEFORESTATION
CLIMATE CHANGE
lcsh:Medicine
Plant Science
01 natural sciences
Biochemistry
Geographical Locations
purl.org/becyt/ford/1 [https]
Disponibilidad del Agua
remote sensing
primary productivity
Dry Farming
SUMMER VEGETATION
Tropical climate
HUMAN CELL
WATER
Photosynthesis
lcsh:Science
2. Zero hunger
Climatology
Multidisciplinary
Ecology
Plant Biochemistry
Physics
Electromagnetic Radiation
PLANT DEVELOPMENT
WATER AVAILABILITY
HUMAN
Vegetación
Agriculture
Productivity (ecology)
ecosystem functioning
Physical Sciences
Solar Radiation
Seasons
CIENCIAS NATURALES Y EXACTAS
Research Article
Crops, Agricultural
Climate Change
Summer
Oceania
Climate change
Growing season
Plant Development
Subtropics
Horticulture
METABOLISM
010603 evolutionary biology
Ecosystems
Ciencias Biológicas
TROPIC CLIMATE
COMPARATIVE STUDY CROP
deforestation
Ecosystem
MODEL PRODUCTIVITY
purl.org/becyt/ford/1.6 [https]
Ciencias de las Plantas, Botánica
Plant Physiological Phenomena
0105 earth and related environmental sciences
Tropical Climate
Ecology and Environmental Sciences
GROWTH, DEVELOPMENT AND AGING
lcsh:R
Australia
SAMPLING
Water
Biology and Life Sciences
Enhanced vegetation index
Cultivo en Tierras Aridas
15. Life on land
Arid
Agronomy
CLIMATE
PLANT PHYSIOLOGY
People and Places
GROWING SEASON
Earth Sciences
Environmental science
ECOSYSTEM
lcsh:Q
VEGETATION
CROPS AGRICULTURAL
Subjects
Details
- Language :
- English
- ISSN :
- 19326203
- Volume :
- 11
- Issue :
- 12
- Database :
- OpenAIRE
- Journal :
- PLoS ONE
- Accession number :
- edsair.doi.dedup.....50e69b8384488fd8071c55a3a76fc636