RRS James Clark Ross JR15001 - Atlantic Meridional Transect 25, JR864 (2015)

AMT25: The overall aim of the Atlantic Meridional Transect programme is: to quantify key biogeochemical and ecosystem processes and their inherent variability over extended time and spatial scales in the Atlantic Ocean. This is achieved by executing an annually repeated meridional transect through contrasting oceanic provinces, ranging from oligotrophic deserts, to highly productive shelf seas.

Specific objectives:

- To quantify the nature and causes of ecological and biogeochemical variability in planktonic ecosystems;

- To quantify the effects of this variability on nutrient cycling, on biogenic export and on air-sea exchange of climate active gases;

- To construct multi-decadal, multidisciplinary ocean time-series which are integrated within a wider "Pole-to-pole" observatory concept;

- To provide essential sea-truth validation for current and next generation satellite missions;

- To provide essential data for global ecosystem model development and validation;

- To provide a valuable, highly sought after and unique training arena for the next generation of UK and international oceanographers.

JR864: The oceanographic research ship RRS James Clark Ross attempted to physically and biologically characterise Ascension Island's shelf from 14th-18th October 2015. Multibeam sonar swath was used to generate the first open-access, high resolution mapping of Ascension Island's seabed between 100-1100m depth. These data was used to determine seabed profile and rugosity characteristics. Seabed substratum was investigated using a benthic camera lander (SUCS) and water column physico-chemistry was gained using CTD. The SUCS provided 500 photographs and video clips of benthos from 21 site/depth combinations, which showed a wide disparity in richness and density of biodiversity. These were ground-truthed by targeted Agassiz trawl samples to collect vouchers specimens for morphological and genetic identification. Specimens collected were photographed, fixed and then preserved in 96% ethanol for later genetic analyses. Preliminary analysis of the biodiversity captured was undertaken in the Conservation Department building, Georgetown, Ascension Island and indicated new records for the Island including first records of brachipods.

 
Citation proposal
(2015) . RRS James Clark Ross JR15001 - Atlantic Meridional Transect 25, JR864 (2015). https://services.mspdata.eu:/geonetwork/srv/api/records/683127c8-d6af-442b-803d-71537abffe0a

Simple

Date ( Publication )
2015-11-04
Identifier
683127c8-d6af-442b-803d-71537abffe0a
Credit
British Oceanographic Data Centre
Credit
Plymouth Marine Laboratory
Credit
University of Liverpool
Status
Completed

  Distributor

Website
https://www.bodc.ac.uk/  
Thèmes Sextant ( Theme )
  • /Human Activities/Oceanographical Cruises
GEMET - INSPIRE themes, version 1.0 ( Theme )
Mission Atlantic - BODC Parameters ( Theme )
  • /Biological oceanography/Fish , /Biological oceanography/Other biological measurements
Mission Atlantic - Data type (DMP) ( Theme )
  • Acoustic data
Mission Atlantic - Work Package ( Theme )
  • WP3 Pelagic Mapping
Mission Atlantic - Resources ( Theme )
  • Data
Other constraints
Spatial representation type
Grid
Metadata language
English
Character set
UTF8
Topic category
  • Oceans
N
S
E
W


Vertical extent

Minimum value
71.1
Maximum value
6255
Geometric object type
Composite
OnLine resource
All data series  
OnLine resource
Cruise summary report  
Hierarchy level
Series

Metadata

File identifier
683127c8-d6af-442b-803d-71537abffe0a   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Series
Date stamp
2021-12-15T15:36:19
Metadata standard name
ISO 19115:2003/19139 - SEXTANT
Metadata standard version
1.0

  Point of contact

Website
https://sextant.ifremer.fr/eng  
 
 

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