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Cobertura vegetal e perdas de solo por erosão em diversos sistemas de melhoramento de pastagens nativas. Repositório Alice
BONO, J. A. M.; CURI, N.; FERREIRA, M. M.; EVANGELISTA, A. R.; CARVALHO, M. M.; SILVA, M. L. N..
1996
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cobertura vegetal; Erosão; Pastagem nativa; Vegetation cover; Soil erosion; Meadows.
Ano: 1996 URL: http://www.alice.cnptia.embrapa.br/handle/doc/334349
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Ecohydrological conditions of wetlands along a precipitation gradient in Patagonia, Argentina Ecología austral
Chimner,Rodney A; Bonvissuto,Griselda L; Cremona,M Victoria; Gaitan,Juan J; López,Carlos R.
Wetlands are an important component of the Andean ecology because of their wealth of biodiversity and endemisms, and the many environmental services they offer. However, baseline knowledge of the types of wetlands and their ecohydrological functioning is currently lacking. Therefore, the objective of this study was to characterize the types and the ecohydrological conditions of wetlands along a precipitation gradient in the Northern Patagonian Andes. This study took advantage of a strong precipitation gradient that occurs due to the rain shadow effect created by the Andes Mountains near the city of San Carlos de Bariloche. We selected five representative wetlands that are at similar elevations and latitudes, but under very different precipitation regimes....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Andes; Meadows; Mountains; Peatlands.
Ano: 2011 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2011000300008
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Historical Meadow Dynamics in Southwest British Columbia: a Multidisciplinary Analysis Ecology and Society
Lepofsky, Dana; Simon Fraser University; dlepofsk@sfu.ca; Heyerdahl, Emily K; USDA Forest Service; eheyerdahl@fs.fed.us; Lertzman, Ken; Simon Fraser University; lertzman@sfu.ca; Mierendorf, Bob; North Cascades National Park Service Complex; Bob_Mierendorf@nps.gov.
The recent encroachment of woody species threatening many western North American meadows has been attributed to diverse factors. We used a suite of methods in Chittenden Meadow, southwestern British Columbia, Canada, to identify the human, ecological, and physical factors responsible for its historical dynamics and current encroachment by woody vegetation. We evaluated three hypotheses about the origin and processes maintaining the meadow: the meadow is (1) of recent human origin; (2) of ancient human origin, maintained by aboriginal burning; and (3) of ancient non-human origin, not maintained by aboriginal burning. Our data supported the idea that the meadow had ancient non-human origins and its recent history and current status have resulted from...
Tipo: Peer-Reviewed Reports Palavras-chave: Anthropogenic influence; Archaeology; British Columbia; Cascade Range; Chittenden Meadow; Climate change; Dendrochronology; Fire suppression; Historical dynamics; Meadows; Ponderosa pine; Tree encroachment.
Ano: 2003
Registros recuperados: 3
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