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	Provedor de dados Zoologia (1) Chilean J. Agric. Res. (1) Autor Acevedo Hinojosa,Edmundo (1) Jacobucci,Giuliano Buzá (1) Leite,Fosca Pedini Pereira (1) Peralta Caroca,Rosa (1) Silva Candia,Paola (1) Palavra-chave Depth distribution (2) Brazil (1) Macrofauna (1) No-tillage species composition abundance (1) Phytal (1) Sargassum (1) Seasonal fluctuations (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Journal article (1) Ano 2011 (1) 2002 (1) País Brazil (1) Chile (1) Idioma Inglês (1) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Characterization of the Weed Seed Bank in Zero and Conventional Tillage in Central Chile Chilean J. Agric. Res. Peralta Caroca,Rosa; Silva Candia,Paola; Acevedo Hinojosa,Edmundo. We studied the abundance, species composition, and depth distribution of the weed seed bank under no-tillage (NT) and conventional tillage (CT) at two sites, A and B. Soil samples were taken at three soil depths (0-2, 2-5, and 5-15 cm). Germinated, dormant, and total seeds were counted. The total number of seeds was higher (p ≤ 0.05) under CT treatment at the two sites (CTA = 5175 seeds m-2, NTA = 3250 seeds m-2, CTB = 33770 m-2, and NTB = 22437 seeds m-2). The number of viable, dormant, and germinated seeds was also higher (p ≤ 0.05) in CT at the two sites. The percentage of viable seeds was low with 37% (CTA), 34% (CTB), 21% (NTA), and 8% (NTB). Viable seeds of Chenopodium album L. (CHEAL) dominated in the two trials with 67% (CTA),... Tipo: Journal article Palavras-chave: No-tillage species composition abundance; Depth distribution. Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100017 Distribuição vertical e flutuação sazonal da macrofauna vágil associada a Sargassum cymosum C. Agardh, na praia do Lázaro, Ubatuba, São Paulo, Brasil Zoologia Jacobucci,Giuliano Buzá; Leite,Fosca Pedini Pereira. Seasonal fluctuations and depth distribution of the vagile macrofauna associated with Sargassum cymosum at Lazaro beach, Ubatuba, São Paulo State, were evaluated through density comparison of higher taxonomic groups among three depth intervals in four periods of the year. Ten groups were identified and among them gammarid and caprellid amphipods were numerically dominant in all sampling periods and did not show any consistent zonation trend. Gastropods, polychaetes and ophiuroids ocurred in lower densities and tended to dominate as depth increased, Wet weight algae variation did not explain the observed spatial and temporal patterns. Biotic interactions, recruitment and environmental parameters are probably involved in seasonal density variation of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Depth distribution; Seasonal fluctuations; Macrofauna; Sargassum; Phytal; Brazil. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000500004 Registros recuperados: 2 Primeira ... 1 ... Última

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