The response of sea ice and brine water algae and bacteria to changes in salinity, temperature, light and UVB in Terra Nova Bay

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: The response of sea ice and brine water algae and bacteria to changes in salinity, temperature, light and UVB in Terra Nova Bay
Description:
Abstract:
Samples of the bottom ice algae and brine algae (within 30cm of the top of the ice) were subjected to temperature, salinity, light and UVB experiments and analysed with PAM rapid light curves to determine the response of the algae to changes they will encounter during the processes of ice formation at the start of winter and ice melting in summer. Brine algae are likely to be adapted to high light and high UVB conditions near the surface of the ice and may have produced higher levels of protective pigments, MAA's, therefore the content of MAA's was analysed. Imaging PAM fluorometry was also used to gain a 3D image of photosynthetic stressors during the process of ice freeze and thaw on both algae and bacterial cells. The difference in thylakoid structure with increase in temperature was also analysed. Bacterial cells were collected at the end of exposure and a CTC assay was performed on them to determine the effect of UVB radiation. Bottom ice algae exposed to different light levels and UV exposure was analysed for cell counts, antioxidants and MAAs. Bacterial response to changes in light and salinity was examined by adding a fluorescent stain (CTC) to a melted entire sea ice core, a brine sample and a bottom ice sample and exposing the samples to various combinations of light and salinity. Samples were examined for cells that fluoresce due to metabolized CTC. The bacterial response to light and the presence/absence/inhibition of microalgae was examined using the vital stain and probe technique after exposing melted ice core samples to a range of irradiances for 4 hours. Samples of the brine community were collected and incubated for 5 days to determine the longer term response to light. Tritiated leucine was used calibrate the use of the CTC method.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Martin, A., Hall, J.A., Ryan, K.G. 2009. Low salinity and high-level UV-B radiation reduce single-cell activity in Antarctic sea ice bacteria. Applied and environmental microbiology 75: 7570-7573 2009. doi:10.1128/AEM.00829-09
Supplemental_Information:
REFERENCE: Martin, A. 2009. Microbial loop dynamics in Antarctic sea-ice. PhD Thesis Victoria University of Wellington. pp 177
Supplemental_Information:
REFERENCE: Ryan, K.G., Cowie, R.O.M, Liggins, E., McNaughtan, D., Martin, A., Davey, S.K. 2009. The short-term effect of irradiance on the photosynthetic properties of Antarctic fast-ice microalgal communities. Journal of phycology. 10.1111/j.1529-8817.2009.00764.x
Supplemental_Information:
REFERENCE: Koh, E. Biodiversity of prokaryotes in Antarctic sea ice. PhD thesis in progress, Victoria University of Wellington, New Zealand.
Supplemental_Information:
REFERENCE: Rajanahally, M. Ecophysiology of Antarctic sea ice algae. . PhD thesis in progress, Victoria University of Wellington, New Zealand.
Supplemental_Information:
REFERENCE: Ryan, K.G., Liggins, E., McNaughtan, D., Martin, A., Tay, M. & Davy S.K. (2008). Imaging PAM visualisation of sea ice algae and their response to environmental change. In: Rudenko, N.; Klepikov, A. (Eds.) SCAR/IASC IPY Open Science Conference “Polar Research - Arctic and Antarctic perspectives in the International Polar Year”: Abstract volume (pp. 264). State Scientific Center of the Russian Federation the Arctic and Antarctic Research Institute, Elektronsdart-Print Joint-Stock Company. ISBN 978-5-98364-013-09
Supplemental_Information:
REFERENCE: Rajanahally, M, Bryant, L. Koh, EY, Davy S., Martin A, Ryan KG (2008) Antarctic sea ice productivity and ecophysiology. NZ Marine Sciences Society Conference Christchurch July 2008.
Supplemental_Information:
REFERENCE: Rajanahally, M, Ryan KG and Davy S (2007). Antarctic microalgae: physiological responses to environmental changes. New Zealand Marine Sciences Society Annual Conference; Hamilton, New Zealand.
Supplemental_Information:
REFERENCE: Cowie, R., Liggins L., McNaughtan D, Martin A, Davy S., and Ryan KG (2008) The effect of irradiance on Antarctic fast-ice microalgal communities Antarctic New Zealand Annual Conference, Dunedin July 2008.
Supplemental_Information:
REFERENCE: Rajanahally, M, Bryant, L. Koh, EY, Davy S., Martin A, Ryan KG (2008). Antarctic sea ice productivity and ecophysiology. Antarctic New Zealand Annual Conference, Dunedin July 2008.
Supplemental_Information:
REFERENCE: Ryan KG, Davy, SK, O’Toole, R, Martin, A, Ralph P (2006) Effects of Salinity and Light on the Microbial Community in Antarctic Sea Ice. SCAR XXIX/ COMNAP XVIII Conference Hobart 2006.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20061103
Ending_Date: 20061209
Currentness_Reference:Unknown
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20071110
Ending_Date: 20071210
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 164.5
East_Bounding_Coordinate: 164.5
North_Bounding_Coordinate: -74.8333
South_Bounding_Coordinate: -74.8333
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 > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CHLOROPHYLL
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > AQUATIC ECOSYSTEMS > MARINE HABITAT
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > BIODIVERSITY FUNCTIONS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > PHOTOSYNTHESIS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > PRIMARY PRODUCTION
Theme_Keyword: LABORATORY
Theme_Keyword: FIELD INVESTIGATION
Theme_Keyword: PAM > PORTABLE FLUORESCENCE ANALYZERS
Theme_Keyword: LGP > LATITUDINAL GRADIENT PROJECT
Theme_Keyword: EBA > EVOLUTION AND BIODIVERSITY IN THE ANTARCTIC
Theme_Keyword: BIOTA
Theme_Keyword: OCEANS
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA
Place_Keyword: CONTINENT > ANTARCTICA > TERRA NOVA BAY
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:
Existing samples are held at Victoria University of Wellington with a spreadsheet of sample numbers. All raw data is held by the investigators. Please contact Dr Ken Ryan for more information.
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: SHULAMIT GORDON
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: s.gordon@antarcticanz.govt.nz
Resource_Description: K043_2006_2008_NZ_4
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:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://hdl.handle.net/10063/1101
Access_Instructions:
Andrew Martin PhD Thesis pdf
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
www.lgp.aq/
Access_Instructions:
LGP Project Homepage
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.victoria.ac.nz/sbs/staff/staff_research...
Access_Instructions:
Investigators research page
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20050922
Metadata_Review_Date: 20100223
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: SHULAMIT GORDON
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: s.gordon@antarcticanz.govt.nz
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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