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Chocobar Guerra, Eneyda Andrea. |
Los organismos del suelo contribuyen en la formación y los cambios de la estructura física del suelo e influyen en la dinámica de los nutrientes por sus efectos sobre la inmovilización y humificación de la materia orgánica. Por lo anterior, es importante estudiar la edafofauna en sistemas de larga duración (15 años) porque repercute de manera directa en el rendimiento de los cultivos y en el mejoramiento del suelo. Estas cualidades además pueden ser empleadas para crear indicadores biológicos de calidad del suelo, con el objeto de potenciar manejos agrícolas con tendencias sustentables. La investigación se enfocó en clasificar (grupo taxonómico), cuantificar (Nº individuos m-2) medir biomasa (gramos m-2) y evaluar la variación poblacional de la edafofauna... |
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Palavras-chave: Indicadores biológicos; Labranza; Rotación; Residuos; Biological indicator; Tillage; Crop rotation; Residues; Maestría; Edafología. |
Ano: 2010 |
URL: http://hdl.handle.net/10521/317 |
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Desroy, Nicolas; Dubois, Stanislas; Fournier, Jerome; Ricquiers, L.; Le Mao, Patrick; Guerin, Laurent; Gerla, Daniel; Rougerie, Michel; Legendre, Aurelie. |
1. Reefs built by the annelid worm Sabellaria alveolata in the Bay of Mont-Saint-Michel (France) are the most extensive intertidal biogenic structures within Europe. Before and after mussel farming extensions, a study designed to provide a biological health index of the Sainte-Anne reef (223 ha) was carried in 2001 and 2007 to serve as an easy-to-use management tool and to ensure endangered reef portions were properly targeted and protected. 2. Coupled physical and biological parameters were included in a spatial Health Status Index (HI). A spatial and temporal mapping survey of the HI showed a continuous deterioration of the reef's state of health, particularly in its central part. This degradation correlates with the colonization of the Pacific oyster... |
Tipo: Text |
Palavras-chave: Sabellaria alveolata; Biogenic reef; Health status; Biological indicator; Shellfish farming; Recreational fishing activities. |
Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00043/15430/12887.pdf |
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Nascimento,Silvânia Maria de Souza Gomes; Souza,Adailson Pereira de; Lima,Vera Lúcia Antunes de; Nascimento,Clístenes Williams Araújo do; Nascimento,Joab Josemar Vitor Ribeiro do. |
ABSTRACT: High growth rate is one of the criteria used for the selection of species to be used in metal phytoextraction programs. This study was carried out to characterize the growth characteristics of sunflower (Helianthus annuus L.), castor bean (Ricinus communis L.), corn (Zea mays L), and vetiver [Vetiveria zizanioides (L.) Nash] grown on a soil contaminated with lead (Pb), with and without pH correction, to improve agronomic practices regarding phytoremediation programs. The experiment was designed as a randomized block with four replications; treatments were arranged in a split-plot arrangement, with the main plot representing the species (sunflower, castor bean, corn, and vetiver), with or without pH correction and soil fertilization, and the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytoremediation; Soil pollution; Heavy metal; Biological indicator. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100547 |
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