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Edafofauna como indicador de calidad en un suelo cumulic phaozem sometido a diferentes sistemas de manejos en un experimento de larga duración. Colegio de Postgraduados
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...
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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Tracking the Genetic Effects of Global Warming: Drosophila and Other Model Systems Ecology and Society
Scheiner, Samuel M; National Science Foundation; sscheine@nsf.gov.
Current efforts to study the biological effects of global change have focused on ecological responses, particularly shifts in species ranges. Mostly ignored are microevolutionary changes. Genetic changes may be at least as important as ecological ones in determining species' responses. In addition, such changes may be a sensitive indicator of global changes that will provide different information than that provided by range shifts. We discuss potential candidate systems to use in such monitoring programs. Studies of Drosophila subobscura suggest that its chromosomal inversion polymorphisms are responding to global warming. Drosophila inversion polymorphisms can be useful indicators of the effects of climate change on populations and ecosystems. Other...
Tipo: Peer-Reviewed Reports Palavras-chave: Biodiversity conservation; Biological indicator; Chromosomal inversion polymorphism; Climate change; Drosophila; Evolutionary ecology; Genetic diversity; Global warming; Microevolution..
Ano: 1998
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The conservation status of Sabellaria alveolata (L.) (Polychaeta: Sabellariidae) reefs in the Bay of Mont-Saint-Michel ArchiMer
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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Do we protect biological originality in protected areas? A new index and an application to the Bonifacio Strait Natural Reserve ArchiMer
Mouillot, D; Culioli, J; Pelletier, Dominique; Tomasini, J.
Changes in biodiversity may disrupt the ecological functions performed by species assemblages. Hence, we urgently need to examine the implications of biodiversity loss not only in terms of species conservation but also in terms of sustainability of ecosystem services. The ability of protected areas to maintain local species richness has been clearly demonstrated. However, preserving goods and services provided by ecosystems requires not only the conservation of species richness but also the conservation of the most 'original' species, i.e. the ones with the highest average rarity of their attributes which are likely to perform some unique functions in ecosystems. We proposed a new conservation of biological originality (CBO) index as well as associated...
Tipo: Text Palavras-chave: Biological indicator; Indicator species; Fish assemblage; Randomization test; Functional originality; Functional trait; Marine reserve.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4480.pdf
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Phytoextractor Potential of Cultivated Species in Industrial Area Contaminated by Lead Rev. Bras. Ciênc. Solo
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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