Monday, February 2, 2015

 

 



Soy un nuevo usuario

Olvidé mi contraseña

Entrada usuarios

Lógica Matemáticas Astronomía y Astrofísica Física Química Ciencias de la Vida
Ciencias de la Tierra y Espacio Ciencias Agrarias Ciencias Médicas Ciencias Tecnológicas Antropología Demografía
Ciencias Económicas Geografía Historia Ciencias Jurídicas y Derecho Lingüística Pedagogía
Ciencia Política Psicología Artes y Letras Sociología Ética Filosofía


Microstructural Characterization of Cyanobacterial Mats from the McMurdo Ice Shelf, Antarctica

1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario
    registrado en Universia


  Descargar recurso   Descargar recurso

Detalles del recurso

Pertenece a: Digital.CSIC  

Descripción: The three-dimensional structures of two types of cyanobacterium-dominated microbial mats from meltwater ponds on the McMurdo Ice Shelf were as determined by using a broad suite of complementary techniques, including optical and fluorescence microscopy, confocal scanning laser microscopy, scanning electron microscopy with back-scattered electron-imaging mode, low-temperature scanning electron microscopy, and microanalyitical X-ray energy dispersive spectroscopy. By using a combination of the different in situ microscopic techniques, the Antarctic microbial mats were found to be structures with vertical stratification of groups of cyanobacteria and mineral sediments, high contents of extracellular polymeric substances, and large void spaces occupied by water. In cyanobacterium-rich layers, heterocystous nostocalean and nonheterocystous oscillatorialean taxa were the most abundant taxa and appeared to be intermixed with fine-size deposits of epicellular silica and calcium carbonate. Most of the cyanobacterial filaments had similar orientations in zones without sediment particles, but thin filaments were tangled among thicker filaments. The combination of the microscopic techniques used showed the relative positions of biological and mineral entities within the microbial mats and enabled some speculation about their interactions.

Autor(es): Ríos, Asunción de los -  Ascaso, Carmen -  Wierzchos, Jacek -  Fernández -  Valiente, Eduardo -  Quesada, Antonio - 

Id.: 38505133

Idioma: English  - 

Versión: 1.0

Estado: Final

Tipo:  5313479 bytes -  application/pdf - 

Tipo de recurso: Artículo  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: Acceso abierto / Open Access

Formatos:  5313479 bytes -  application/pdf - 

Requerimientos técnicos:  Browser: Any - 

Fecha de contribución: 16-ene-2009

Contacto:

Localización:
* 0099-2240
* 10.1128/AEM.70.1.569-580.2004


Otros recursos del mismo autor(es)

  1. Unidad Docente de Medicina Familiar y Comunitaria de Huelva Hospital Vázquez Díaz, 4.ª planta Objective: Analysis of the inter-observer variabi-lity of biomicroscopy used for the diagnosis of Di...
  2. Un simposio sobre no-arte De manera sintética se exponen las ideas más fundamentales vertidas sobre el arte o no arte tema del...
  3. The Latin American Research Network Inter American Development Bank acknowledges comments and support from the coordinators and from Professor van Praag, Hugo Ñopo, Ada...
  4. CONTENT ALERTS This article cites 42 articles, 10 of which can be accessed free
  5. 1 Beyond DAB: another digital radio is possible Like all the other cultural industries, radio finds itself in the middle of a digitalisation process...

Otros recursos de la misma colección

  1. Phytoremediation studies of Zn polluted soils using In the South of Madrid, áreas occupied by abandoned urban and industrial waste landfills, are the mo...
  2. Ecological engineering in the management of an olive orchard on degraded soil THIS report describes the results obtained ¡n a field experiment performed on an olive orchard, in w...
  3. Effect of Heavy Metals from Mine Soils on Avena Sativa L.and Education Strategies Heavy metals in the soils of old mining areas, besides affecting the productivity of their ecosystem...
  4. The effect of Chrysoperla carnea (Neuroptera: Chrysopidae) and Adalia bipunctata (Coleoptera: Coccinellidae) on the spread of cucumber mosaic virus (CMV) by Aphis gossypii (Hemiptera: Aphididae) The effects of two aphidophagous predators, the larvae of Chrysoperla carnea and adults of Adalia bi...
  5. Biofertilization of Degraded Southern African Soils with Cyanobacteria Affects Organic Matter Content and Quality We studied, under laboratory conditions, the effects of Nostoc 9v (cyanobacteria) on the soil organi...

Valoración de los usuarios

No hay ninguna valoración para este recurso.Sea el primero en valorar este recurso.
 

Busque un recurso