Life In The Ice: Microbial Diversity and Function in Antarctic Sea Ice Ecosystems

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Life In The Ice: Microbial Diversity and Function in Antarctic Sea Ice Ecosystems
Description:
Abstract:
Our hypothesis is that ‘spatial and temporal variations in diversity and ecosystem function of the sea ice microbial community are sensitive indicators of changing climatic conditions’. The research will develop baseline long-term data on microbial biodiversity and community structure in the “grass” of ice-covered regions – the primary and secondary producers at the base of the food web. We will do this using both conventional methods and molecular technology, and will quantify abundances and species identifications using a range of traditional and modern techniques including DNA fingerprints, high throughput sequencing and single cell genome amplification. We will develop an understanding of the functional role of various components of the sea ice microbial community using ecophysiological methods we have developed over nearly 20 years of Antarctic research coupled with new technologies brought together with our international collaborators on this project. Microorganisms are the most diverse and by far the most abundant biological entities in marine environments and they are often sensitive indicators of environmental change because of their rapid lifecycles. Given the projected changes to the volume and extent of annual sea ice, SIMCO or ‘sea ice microbial communities’ provide an ideal model system to measure the effects of environmental change in Polar Regions. This research will generate a bio-inventory of the microorganisms in sea ice using both conventional methods and molecular technology, and will quantify abundances to generate community fingerprints for each field site. In 2010-2011 our research was conducted at Cape Evans. The following data was collected. - CTD (conductivity/temperature/depth) casts of temperature, conductivity, salinity, depth, live chlorophyll were made each day at solar noon through the sea ice to bottom (25m). - PAR recorded at 5m above sea ice, using Skye light sensors. (units of microeinsteins /m2/s for PAR and microW per cm2 for UVB. Data were recorded daily at solar noon. - HOBO data loggers embedded in sea ice at approx 300mm intervals through the depth of the ice (2m). Recording continuously at 10 min intervals. In 2011-2012 our research was conducted at Turtle Rock and Cape Evans. The following data was collected. - Turtle rock: CTD casts of temperature, conductivity, salinity, depth, live chlorophyll were made each day at solar noon through the sea ice to bottom (25m). - Air temperature, solar visible and UVB irradiances were recorded each day at solar noon (approx 1330) - Cape Evans: CTD casts of temperature, conductivity, salinity, depth, live chlorophyll were madeon selected days at approximately solar noon through the sea ice to bottom (30m)
Purpose:
Not Available
Supplemental_Information:
Not Available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20111108
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 166.4
East_Bounding_Coordinate: 166.4
North_Bounding_Coordinate: -77.633
South_Bounding_Coordinate: -77.633
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 166.7757
East_Bounding_Coordinate: 166.7757
North_Bounding_Coordinate: -77.7443
South_Bounding_Coordinate: -77.7443
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 166.24
East_Bounding_Coordinate: 166.24
North_Bounding_Coordinate: -77.38
South_Bounding_Coordinate: -77.38
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > PLANKTON > PHYTOPLANKTON
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > DIATOMS
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > DINOFLAGELLATES
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA > CYANOBACTERIA (BLUE-GREEN ALGAE)
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL
Theme_Keyword: LABORATORY
Theme_Keyword: FIELD INVESTIGATION
Theme_Keyword: FIELD SURVEYS
Theme_Keyword: CTD > CONDUCTIVITY, TEMPERATURE, DEPTH
Theme_Keyword: THERMOMETERS
Theme_Keyword: EBA > EVOLUTION AND BIODIVERSITY IN THE ANTARCTIC
Theme_Keyword: BIOTA
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENVIRONMENT
Theme_Keyword: OCEANS
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA > CAPE EVANS
Place_Keyword: CONTINENT > ANTARCTICA > TURTLE ROCK
Place_Keyword: CONTINENT > ANTARCTICA
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: KEN RYAN
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Victoria University of Wellington
Address: School of Biological Sciences
Address: PO BOX 600
City: Wellington
Postal_Code: 6140
Country: New Zealand
Contact_Voice_Telephone: +64 4 463 6083
Contact_Facsimile_Telephone: +64 4 463 5331
Contact_Electronic_Mail_Address: ken.ryan@vuw.ac.nz
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
All data is stored at Victoria University, Wellington. If you require any further information please contact the investigator.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NZ/NZAI/ANZ > Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand
Contact_Person: CAROLINE MACLAURIN
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch 8140
Country: New Zealand
Contact_Voice_Telephone: (03) 358 0200
Contact_Facsimile_Telephone: (03) 358 0211
Contact_Electronic_Mail_Address: c.maclaurin@antarcticanz.govt.nz
Resource_Description: K043_2010_2012_NZ_2
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.antarcticanz.govt.nz/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20120627
Metadata_Review_Date: 20120629
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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