Buscar
Mostrando ítems 41-50 de 100
Fenología foliar regional a lo largo de un gradiente climático SW-NE en la ArgentinaRegional foliar phenology along a sw-ne climatic gradient in Argentina
(Gaea, 2014-09)
Se caracteriza la fenología foliar regional de Argentina mediante parámetros diná- micos que describen una serie temporal de nueve años de imágenes mensuales de índice de vegetación NDVI. Se aplica la Transformada Rápida ...
Late Paleozoic coal beds and coaly mudstones in northwestern basins of Argentina: Paleoenvironmental context and paleoclimatic significance
(Elsevier, 2021-03)
Coals and coaly mudstones are found in the late Paleozoic Paganzo Basin, forming a key stratigraphic level deposited during the Bashkirian – Moscovian interval of relative tectonic quiescence. Coal beds vary from bituminous ...
ECOLOGICAL ATTRIBUTES OF ALIEN Nicotiana glauca GRAHAM (SOLANACEAE) AND ASSESSMENT OF THE SUSCEPTIBILITY OF THE SPECIES OCCURRING IN BRAZILATRIBUTOS ECOLÓGICOS DA BIOINVASORA Nicotiana glauca GRAHAM (SOLANACEAE) E AVALIAÇÃO DA SUSCEPTIBILIDADE DE SUA OCORRÊNCIA NO BRASIL
(Universidade Federal de Santa Maria, 2015)
The imprint of humans on landscape patterns and vegetation functioning in the dry subtropics
(Wiley, 2012-11-24)
Dry subtropical regions (DST), originally hosting woodlands and savannas, are subject to contrasting human pressures and land uses and different degrees of water limitation. We quantified how this variable context influences ...
A review of Late Quaternary inland dune systems of South America east of the Andes
(Elsevier, 2014-07)
Inland dune systems of South America occur in a variety of environmental settings under different climatic conditions, from humid–subhumid to semiarid–arid. This contribution provides the state of the art on dune research ...
Bee cell trace fossils associations on paleosols from the Santa Cruz Formation: Palaeoenvironmental and palaeobiological implications
(Elsevier Science, 2016-10)
Numerous isolated fossil bee cells and other trace fossils are documented from the Santa Cruz Formation (Santa Cruz, Argentina). The trace fossils are described from paleosols of 7 coastal localities. The paleosols are ...
100 Ma sweat bee nests: Early and rapid codiversification of crown bees and flowering plants
(Public Library of Science, 2020-01)
100 Ma sweat bee nests reported herein are the oldest evidence of crown bees. A new phylogeny for short-tongued bees, calibrated with these nests dated with 40Ar/39Ar, attests for the first time for a late Albian rapid ...
Uma breve reflexão sobre a influência da irrigação convencional por aspersores na bacia hidrográfica do Rio Tabuas, Montes Claros Norte de Minas Gerais
(Universidade Federal de Minas GeraisUFMG, 2011-06-30)
The waste of water has been considered one of the most serious environmental problems of the present time, it has taken not only authorities, academics and environmentalists, but all the society, to start if to feel ...
Clima, disponibilidade hídrica e pobreza na porção mineira da bacia hidrográfica do rio JequitinhonhaClimate, water availability and poverty in the Minas Gerais portion of the Jequitinhonha River watershed
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Geografia, 2021)
Triassic paleoclimate and paleofloristic trends of southwestern Gondwana (Argentina)
(Pergamon-Elsevier Science Ltd, 2022)