Study of N and C cycles and the effect of UV radiation on microbial Antarctic communities
Entry ID: CNDA-ESP_ANT1999-1319-E

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Summary
Abstract: IN ENGLISH:
The data collected were:

-Study of the UV natural radiation effect on 3 different communities using
filters with different wide radiation strip.
-Samples to determinate the effect on the pigment composition, as
photosynthetic character as photo-protector, just as in the community
structure.
-Study of the UV radiation effect on the rotifere population.
-Experiment of the UV radiation effect on the artificial colonization of an
artificial substrate with cyanobacterial microbial makers.
-Study of the N cycle in different lakes
-Descriptive study of different communities, with samples of each community,
making for each community, microscopically studies of the species.


EN ESPANOL:
Los datos recogidos fueron:

-Estudio del efecto de la radiacion UV natural en tres comunidades diferentes
utilizando filtros con diferente ancho de banda de radiacion.
-Muestras para la determinacion de los efectos en la composicion pigmentaria,
tanto de caracter fotosintetico como fotoprotector, asi como en la estructura
de la comunidad.
-Estudio sobre el efecto de la radiacion UV en las poblaciones de rotiferos
-Experimento del efecto de la radiacion UV en la colonizacion de un sustrato
artificial por parte de cianobacterias formadoras de tapetes microbianos.
-Estudio del ciclo de N en diferentes lagos.
-Estudio descriptivo de diferentes comunidades, con muestras de cada comunidad
realizandose estudios microscopicos de especies de cada comunidad.

Geographic Coverage
 N: -78.0 S: -78.0  E: -165.0  W: -165.0

Temporal Coverage
Start Date: 2000-01-08
Stop Date: 2000-02-13


Location Keywords
CONTINENT > ANTARCTICA > MCMURDO ICE SHELF
GEOGRAPHIC REGION > POLAR


Science Keywords
OCEANS >OCEAN CHEMISTRY >PIGMENTS    [Definition]
SPECTRAL/ENGINEERING >ULTRAVIOLET WAVELENGTHS >ULTRAVIOLET RADIANCE    [Definition]
BIOLOGICAL CLASSIFICATION >BACTERIA/ARCHAEA    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >LAKES    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >SPECIES/POPULATION INTERACTIONS >BIOLUMINESCENCE    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >PHOTOSYNTHESIS    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >BIOMASS DYNAMICS    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >RESPIRATION RATE    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >OXYGEN DEMAND    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >COMMUNITY DYNAMICS >COMMUNITY STRUCTURE    [Definition]


ISO Topic Category
BIOTA
GEOSCIENTIFIC INFORMATION


Platform
OBSERVATORIES    [Information]


Instrument
VISUAL OBSERVATIONS    [Information]


Keywords
BACTERIAL PRODUCTION
ULTRAVIOLET RADIATION
BIOMASS
NITROGEN FIXATION
CIANOBACTERIA


Originating Center
Universidad Autonoma de Madrid


Data Center
Centro Nacional de Datos Antarticos, National Antarctic Data Centre, Comite Polar Espanol, Spain    [Information]
Data Center URL: http://hielo.igme.es/

Data Center Personnel
Name: ANTONIO BARRAGAN SANABRIA
Phone: +34913495731
Fax: +34913495929
Email: a.barragan at igme.es
Contact Address:
Centro Nacional de Datos Antarticos
Instituto Geologico y Minero de Espana
c/Rios Rosas 23
City: Madrid
Postal Code: 28003
Country: SPAIN



Distribution
Distribution_Media: CD-ROM;DAT
Distribution_Format: ASCII;BINARY


Personnel
EDUARDO FERNANDEZ VALIENTE
Role: INVESTIGATOR
Phone: +34914978186
Fax: +34914978344
Email: eduardo.fernandez at uam.es
Contact Address:
Departamento de Biologia. Facultad de Ciencias
Univeridad Autonoma de Madrid
City: Madrid
Postal Code: 28049
Country: SPAIN


OSCAR BERMUDEZ MOLINA
Role: DIF AUTHOR
Phone: +34913495889
Fax: +34913495929
Email: o.bermudez at igme.es
Contact Address:
Centro Nacional de Datos Antarticos
Instituto Geologico y Minero de Espana
C/ Rios Rosas 23
City: Madrid
Postal Code: E-28003
Country: SPAIN


Publications/References
QUESADA A, y FERNANDEZ VALIENTE E The role of N2 fixation in microbial mats in Antartic freshwater ecosystems. En: W. Davison; C. Howard Williams y P. Broady (Eds). Antartic Ecosystems: Models for Wider Ecological Understanding. pp 41-46. New Zealand Natural Sciences. 2000

FERNANDEZ VALIENTE E, QUESADA A, HOWARD-WILLIAMS C y HAWES I. N2-fixation in cyanobacterial mats from ponds on the McMurdo Ice Shelf, Antarctica. Microbial Ecol. 42:338-349 (2001).

QUESADA A, SANCHEZ CONTRERAS M. y FERNANDEZ VALIENTE E.. Tolerance of Antartic cyanobacterial mats to natural UV radiation. Nova Hedwigia. 123: 275-290 (2001)

DE LOS RIOS A, ASCASO C, WIERZCHOS J, FERNANDEZ VALIENTE E Y QUESADA A.
Microstructural characterization of cyanobacterial mats from the McMurdo Ice Shelf, Antarctica. Appl. Environ. Microbiol. 70:569-580 (2004)

Creation and Review Dates
DIF Creation Date: 2006-01-20
Last DIF Revision Date: 2006-01-20

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