Wednesday, July 1, 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. Does biochar interfere with standard methods for determining soil microbial biomass and phenotypic community structure? Due to its high sorption affinity for organic compounds, biochar may interfere with extraction proce...
  2. Application of a set of complementary techniques to understand how varying the proportion of two wastes affects humic acids produced by vermicomposting A better understanding of how varying the proportion of different organic wastes affects humic acid ...
  3. Reconstructing a Carboniferous inferred coral–alcyonarian association using a biomineralogical approach The taxonomic assignation and ecological implications of the genus Syringoalcyon Termier & Termier, ...
  4. Influence of temperature and composition on some physical properties of milk and milk concentrates, V. Electrical conductivity
  5. Estudio en modelos animales de las quimerinas como supresores de tumores en el intestino [Introducción]: La cura del cáncer siempre ha sido uno de los objetivos de la ciencia. Los esfuerzos...

Otros recursos de la misma colección

  1. Heavy metals removal from acid mine drainage water using biogenic hydrogen sulphide and effluent from anaerobic treatment: Effect of pH Four alternatives (runs A, B, C and D) for heavy metals removal (Fe, Cu, Zn and Al) from acid mine d...
  2. Kinetic evaluation of the psychrophylic anaerobic digestion of synthetic domestic sewage using an upflow filter A study of the anaerobic digestion process of synthetic domestic sewage (total COD: 705 mg/L) was ca...
  3. The impact of ammonia nitrogen concentration and zeolite addition on the specific methanogenic activity of granular and flocculent anaerobic sludges This work presents the effect of ammonia nitrogen concentration and zeolite addition on the specific...
  4. Channel changes in the Jarama and Tagus rivers (central Spain) over the past 500 years Long-term channel changes of the Tagus and the Jarama Rivers in central Spain were studied in relati...
  5. Influence of the calcination temperature of kaolin on the mechanical properties of mortars and concretes containing metakaolin The effect of healing, to temperatures between 400 and 1200ºC. on the dehydroxilation of kaolin and ...

Valoración de los usuarios

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

Busque un recurso