Results 21 to 30 of about 861,447 (303)
The postembryonic development, and life table parameters of the Neoseiulus californicus were studied under laboratory conditions in order to evaluate the potentiality of this depredator for feeding on two phytophages mites Tetranychus desertorum (desert
Víctor Tello Mercado +2 more
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Urban expansion constitutes one of the main activities that modify natural environments worldwide; the most vulnerable areas to these effects are peri-urban areas.
Jorge Alberto Escandón-Calderón +4 more
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Expansion and contraction of the Engraulis ringens spawning area in northern Chile
Many studies have considered the temporal patterns of reproduction of Engraulis ringens, but little attention has been given to the spatial patterns of reproduction (spawning areas), which have shown great variability in both location (geographical ...
Paola Moreno, Gabriel Claramunt
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Influencia de la calidad del heno suplementario y la localización de la pastura sobre el rendimiento de bovinos de carne a pastoreo sobre avena [PDF]
Heifers grazing oat pasture (OP) at two locations in Argentina, Argerich (ARG) and Pasman (PAS), were subjected to one of three different dietary supplement treatments: (1) control (CON, no supplement), (2) sorghum hay (SH), or (3) alfalfa-grass hay (AGH)
Arelovich, Hugo Mario +3 more
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Background Weeping lovegrass (Eragrostis curvula [Shrad.] Nees) is a perennial grass found in semi-arid regions that is well adapted for growth in sandy soils and drought conditions. E.
Ingrid Garbus +6 more
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Usos tradicionales y prácticas de manejo de Piper auritum en comunidades maya rurales de Yucatán
Background: Plant domestication is a continuous, multidirectional process that is directed via plant selection and management. In the current study we use Piper auritum, an aromatic plant frequently used in Mexican cuisine and for medicinal purpose, to ...
Rosa Pérez-Hernández +5 more
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Recursos naturales y conflicto
La producción de palma africana ejemplifica una de las más claras tendencias mundiales de cambios en el comercio: primero, la prioridad no es la producción de alimentos, en tanto no se produce comida y, en segundo lugar, el campesino, sujeto cultural, social y político tradicional del proceso productivo, es completamente desplazado (Molano, 2012).El ...
Rosalvina Otálora Cortés +1 more
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Ultrastructural Alterations in Lepocinclis acus (Euglenophyta) Induced by Medium with High Organic Matter Content [PDF]
Ultrastructural changes induced by exposure to excess of organic matter were studied in Lepocinclis acus (ex Euglena acus). The cells isolated from the Matanza River, Buenos Aires, Argentina, were grown in soil water medium (SWM).
Conforti, Visitacion Teresa D. +2 more
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Requerimientos hídricos para el cultivo de fréjol variedad Calima en Riobamba, Ecuador
La investigación se realizó con el objetivo de definir los requerimientos hídricos del fréjol (Phaseolus vulgaris L.) var. Calima en Macají, Cantón Riobamba, Provincia de Chimborazo.
Juan Eduardo León Ruiz +4 more
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Biological Control of Phototrophic Biofilms in a Show Cave: The Case of Nerja Cave
Cyanobacteria and microalgae are usually found in speleothems, rocks and walls of show caves exposed to artificial lighting. These microorganisms develop as biofilms coating the mineral surfaces and producing aesthetic, physical and chemical ...
Valme Jurado +4 more
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