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Global Change Master Directory (GCMD)
Oceanographical Dynamics and planktonic ecosystem in the eastern area of the Bransfield Straits and adjacent areas
Entry ID: CNDA-ESP_ANT93-0997-HE015


Summary
Abstract: In English:

The objectives of this cruise were:

- Typification of the circulation and propagation of oscillations
in the eastern basin of the Bransfield Strait and adjacent areas.

- Typification of the structure and trophic interactions in the
planktonic communities of the study area. Relationships between
the biological variability and the hydrographical conditions.

- Study of the structure and diversity of the microbial and
zooplanktonic communities in the different hydrographical subsystems
which are found between the Drake Passage and the Antarctic Peninsula.

The cruise included a transect of seven biological stations through
the Drake Passage and a grid of stations in the eastern basin of the
Bransfield Strait. This grid included rapid hydrographic stations, in
which temperature and salinity profiles were obtained with a CTD sonde
and water samples were taken with a Rosette sampler, and biological
stations, in which additional samples and zooplankton net hauls were
also taken. The work carried out on board included: Determination of
nutrients, chlorophyll, oxygen, protein and diverse enzymatic activities;
filtration for analysis of C, H, N and nucleic acids in the seston;
experiments to estimate bacterial production, primary production,
mesozooplankton respiration and growth rate, and ingestion rates by
microheterotrophs and mesozooplankton.

En Espanol:

Los objetivos de esta campana fueron:

- Caracterizacion de la circulacion y propagacion de
oscilaciones en la cuenca oriental del Estrecho de Bransfield y
areas adyacentes.

- Caracterizacion de la estructura y principales interacciones
troficas en las comunidades planctonicas del area de
estudio. Relaciones entre la variabilidad biologica y las
condiciones hidrogroficas.

- Estudio de la estructura y diversidad de las comunidades
microbianas y zooplanctonicas en los diferentes subsistemas
hidrograficos que se encuentran entre el Estrecho de Drake y la
Peninsula Antartica.

La campana incluyo un transecto de siete estaciones
biologicas a traves del Estrecho de Drake y una red de
estaciones en la cuenca oriental del Estrecho de Bransfield. En esta
red se intercalaron estaciones hidrograficas rapidas, en las
que se hacian perfiles con la sonda CTD y se tomaban muestras de
agua con las botellas de la Rosette, y estaciones biologicas, en
las que ademas se hacian muestreos adicionales y pescas de
zooplancton con diversos tipos de redes. Los trabajos realizados a
bordo incluyeron: Determinaciones de nutrientes, clorofila,
oxigeno, prote?nas y diversas actividades enzimaticas;
filtraciones para analisis de C, H, N y acidos nucleicos en el
seston; experimentos para estimacion de produccion bacteriana,
produccion primaria, respiracion y tasa de crecimiento del
mesozooplancton y tasas de ingestion por microheterotrofos y
mesozooplancton.

Related URL
Link: View Related Information
Description: In English: Information on the vessel's Hesperides oceanographic
expeditions can be found on this page. The information includes a
summary of the scientific results, participating agencies and other
data.
En Espanol: En esta pagina se encuentra informacion
sobre la campanas realizadas por el Buque Oceanografico
Hesperides: Resumen de los resultados cienti ificos, organismos
participantes y otros datos

Geographic Coverage
 N: -59.0 S: -65.0  E: -51.0  W: -64.0

Data Set Citation
Version: Not provided


Temporal Coverage
Start Date: 1994-01-01
Stop Date: 1994-02-04


Location Keywords
CONTINENT > ANTARCTICA > BRANSFIELD STRAIT > DRAKE PASSAGE
GEOGRAPHIC REGION > POLAR


Science Keywords
ATMOSPHERE >ATMOSPHERIC PRESSURE >ATMOSPHERIC PRESSURE MEASUREMENTS    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >SOLAR RADIATION    [Definition]
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >SURFACE TEMPERATURE >AIR TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >WATER VAPOR INDICATORS >HUMIDITY    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >WATER VAPOR INDICATORS >WATER VAPOR    [Definition]
ATMOSPHERE >ATMOSPHERIC WINDS    [Definition]
BIOLOGICAL CLASSIFICATION >BACTERIA/ARCHAEA    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >PRIMARY PRODUCTION    [Definition]
BIOSPHERE >ECOSYSTEMS >AQUATIC ECOSYSTEMS >PLANKTON >PHYTOPLANKTON    [Definition]
BIOSPHERE >ECOSYSTEMS >AQUATIC ECOSYSTEMS >PLANKTON >ZOOPLANKTON    [Definition]
OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY >SEAFLOOR TOPOGRAPHY    [Definition]
OCEANS >MARINE GEOPHYSICS >MARINE GRAVITY FIELD    [Definition]
OCEANS >OCEAN CHEMISTRY >NUTRIENTS    [Definition]
OCEANS >OCEAN CHEMISTRY >OXYGEN    [Definition]
OCEANS >OCEAN CHEMISTRY >PIGMENTS >CHLOROPHYLL    [Definition]
OCEANS >OCEAN CIRCULATION >WATER MASSES    [Definition]
OCEANS >OCEAN OPTICS >FLUORESCENCE    [Definition]
OCEANS >OCEAN TEMPERATURE >WATER TEMPERATURE    [Definition]
OCEANS >SALINITY/DENSITY >CONDUCTIVITY    [Definition]
OCEANS >SALINITY/DENSITY >SALINITY    [Definition]


Platform
SHIPS    [Information]


Instrument
CTD >Conductivity, Temperature, Depth    [Information]
NISKIN BOTTLES    [Information]
THERMOSALINOGRAPHS    [Information]
MAGNETOMETERS    [Information]
GPS >Global Positioning System    [Information]
ADCP >Acoustic Doppler Current Profiler    [Information]
ECHO SOUNDERS    [Information]
FLUOROMETERS    [Information]


Keywords
BACTERIAL PRODUCTION
CARBON FLUX
ENZYMATIC ACTIVITIES
PHYSICAL OCEANOGRAPHY
PLANKTON DIVERSITY
PRIMARY AND SECONDARY PRODUCTION


Data Center
Unidad de Tecnologia Marina, Consejo Superior de Investigaciones Cientificas, Espana    [Information]
Data Center URL: http://www.utm.csic.es/

Data Center Personnel
Name: MIGUEL ANGEL OJEDA
Phone: +34932216416
Email: maojeda at utm.csic.es
Contact Address:
Centro Mediterraneo de Investigaciones Marinas y Ambientales
CSIC
Unidad de Tecnologia Marina
Paseo Maritimo, 37-39
City: Barcelona
Postal Code: 08003
Country: SPAIN



Distribution
Distribution_Media: CD_ROM, DAT tape
Distribution_Format: ASCII, BINARY


Personnel
ANTONIO BARRAGAN SANABRIA
Role: METADATA AUTHOR
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


MARTA ESTRADA
Role: INVESTIGATOR
Phone: +34932216416
Fax: +34932217340
Email: marta at icm.csic.es
Contact Address:
Instituto de Ciencias del Mar
Paseo Juan de Borbon s/n
City: Barcelona
Postal Code: E-08039
Country: Spain


Extended Metadata Properties
(Click to view more)

Creation and Review Dates
DIF Creation Date: 2001-06-12
Last DIF Revision Date: 2019-02-14



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