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Chasmophytic vegetation and mesoclimates of rock outcrops in Ventania (Buenos Aires, Argentina) Boletín de la Sociedad
Kristensen,María Julia; Frangi,Jorge Luis.
We studied the relationships between mesoclimate variations of rock outcrops and the composition of the chasmophytic communities over a W-E altitudinal gradient (500-1243 m a.s.l.) in the Sierras Australes (Ventania). In transitory weather stations located on 5 sites we recorded climatic variables hourly and simultaneously during 3-4 days at each season for 2 years. We used phytosociological data obtained with the relevé method by Frangi y Bottino (1995) in sites with same topography that weather stations. The analysis showed the influence of aspect on mesoclimates, since physical properties of rocks enhance thermal contrast originated in direct sun radiation, then, it showed altitudinal gradients. Sites to S (550 m a.s.l.) and SW (850 m a.s.l.) was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Landscape arrangement of species; Mountain mesoclimates; Plant communities; Sierras Australes; Species lineage.
Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722015000100005
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