Buscar
Mostrando ítems 1-10 de 569
Mapping continuous fields of tree and shrub cover across the Gran Chaco using Landsat 8 and Sentinel-1 data
(Elsevier Science Inc, 2018-10)
Tropical dry forests and savannas provide important ecosystem services and harbor high biodiversity, yet are globally under pressure from land-use change. Mapping changes in the condition of dry forests and savannas is ...
Past cover modulates the intense and spatially structured natural regeneration of woody vegetation in a pastureland
(2020-03-01)
Vegetation natural regeneration after agricultural abandonment is changing the landscape patterns in many areas worldwide. However, the expansion rate, spatio-temporal dynamics, and the role of past vegetation cover in ...
Thresholds in forest bird communities along woody vegetation gradients in the South American Dry Chaco
(Wiley Blackwell Publishing, Inc, 2019-02-11)
World-wide, tropical savannas and dry forests are under increasing pressure from land use. The environmental impacts of agricultural expansion into these ecosystems have received much attention, yet subtler changes in ...
Continuous grazing disrupts desert grass-soil seed bank composition under variable rainfall
(Springer, 2021-02)
Long-term field studies help unveil mechanisms of grass soil seed bank (SSB) persistence and resilience. We wonder whether grazing is a disruptive force that changes grass SSB composition and size, while heavy rainfall is ...
Uncropped field margins to mitigate soil carbon losses in agricultural landscapes
(Elsevier, 2014-01-15)
Agricultural intensification is a major cause of habitat transformation. Continuous cropping alters ecosystem services, such as biodiversity and carbon sequestration. Empirical evidence from agricultural lands in Argentina ...
Cobertura vegetal e qualidade ambiental na área urbana de Santa Maria (RS)
(Universidade Federal de Santa MariaBRGeografiaUFSMPrograma de Pós-Graduação em Geografia, 2012-06-19)
The disregard of the natural attributes in the process of urbanization reflects in many cities undergoing a profound process of loss of environmental quality, challenging the most different researchers and professionals ...