Resumen:La fragmentación de los ecosistemas es uno de los fenómenos antrópicos de mayor impacto global, y el efecto borde provoca que solo el interior de los fragmentos conserve sus características bióticas y abióticas originales. Los líquenes son organismos especialmente susceptibles a la variabi...
Análisis de Varianza,
Biodiversidad,
Clorofila/análisis,
Clorofila/fisiología,
Colombia,
Líquenes/química,
Rosaceae/química,
Rosaceae/fisiología,
Energía Solar,
Especificidad de la Especie,
Temperatura
Resumen:Las raíces finas juegan un papel importante en la adquisición de agua y minerales del suelo, el balance global del carbono y la mitigación del cambio climático. La dinámica (productividad-PRF y recambio-RRF) de raíces finas es esencial para el ciclo de nutrientes y balance de carbono de los...
Abstract:Schistosomiasis remains a disease of major global public health concern since it is a chronic and debilitating illness. The widely distributed Schistosoma mansoni that causes intestinal schistosomiasis represents a great threat. Its world-wide distribution is permitted by the broad geographic ra...
Factores de Edad,
Biomarcadores/análisis,
Biomphalaria/química,
Biomphalaria/genética,
Biomphalaria/parasitología,
Electroforesis en Gel de Poliacrilamida,
Interacciones Huésped-Parásitos,
Peso Molecular,
Proteínas/análisis,
Proteínas/genética,
Valores de Referencia,
Esquistosomiasis mansoni/parasitología
Abstract Concentrations of ten elements (Cd, Cr, Cu, Fe, Ni, Pb, Se, Sr, V and Zn) were determinate in muscle tissues of 13 fish species from Aratu Bay, Bahia, Brazil by inductively coupled plasma optical emission spectrometry. The accuracy and precision of our results were checked by using two certified...
Abstract The fauna communities of ephemeral pools in southern Chile are characterized by heterogeneity of crustacean taxa; nevertheless, no detailed studies exist of their community structure. The aim of the present study was to analyze the crustacean community structure in two groups of ephemeral pools ...
Abstract Mangrove communities were selected in the state of Santa Catarina, Brazil, near their southernmost limit of distribution, to study mineral nutrient relation in soils and plants. Communities included three true mangrove species, Rhizophora mangle, Laguncularia racemosa and Avicennia germinans, an...
Abstract In this study we determined the concentration of metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) in the water lower São Francisco River basin, to evaluate the influence of urbanization and industrialization on environmental changes in the water resource. All samples were analyzed using the IUPAC ada...
Abstract This study aimed to evaluate nutrients concentration and spatial-temporal changes in phytoplankton biovolume during an experimental fish culture in net cages in a lateral arm of Salto Caxias reservoir, Brazil. Two sampling stations were placed in the affected lateral arm and other two in a cagel...
Biodiversidad,
Brasil,
Chlorophyta,
Conservación de los Recursos Naturales,
Cianobacterias/química,
Cianobacterias/clasificación,
Cianobacterias/fisiología,
Diatomeas/química,
Diatomeas/clasificación,
Diatomeas/fisiología,
Explotaciones Pesqueras,
Peces/fisiología,
Alimentos,
Nitrógeno,
Fitoplancton/química,
Fitoplancton/clasificación,
Fitoplancton/fisiología,
Estaciones del Año
Abstract The phosphorus and nitrogen discharge via effluent of intensive trout farming system was quantified through the use of environmental indicators. The nutrient loads, the mass balance, the estimated amount of nutrients in feed and the amount of nutrients converted in fish biomass were calculated b...
Abstract Phenolic compounds are a group of plant secondary metabolites known to have a variety of bioactivities, including the ability to function as antioxidants. Because of the side effects of the use of synthetic substances, the search for natural and less toxic compounds has increased significantly. ...
