GCMD

Summary

Abstract: The total biomass, productivity and biodiversity of algae and bacteria from the sea ice and the water column was investigated in Terra Nova Bay. Sampling sites in the Terra Nova Bay area were used to survey the sea ice for algae and bacteria by drilling cores and using bottom ice, brine and using the entire ice core to look at biomass in profile. Initial chlorophyll concentrations were determined on all samples and additional sub samples were collected for analysis of bacterial and algal cell counts, carbon concentrations, DNA content, MAA composition, species biodiversity and cell numbers. Sea water under the ice was sampled at 5, 25 and 50m depths and similar analysis were performed. Light levels and termperature loggers were deployed in the sea ice for the duration of sampling and CTD (conductivity, temperature and chlorophyll concentration) profiles were taken in the water column every day at solar noon. A physical survey of the sampling area was also undertaken including snow depth, light attenuation through varying snow depths and under ice irradiance levels. Nutrient analysis (nitrate, silica and phosphate) was conducted on bottom ice samples, brine samples and water column samples.

Related URL

Link: GET DATA
Description: Andrew Martin PhD Thesis pdf

Link: VIEW RELATED INFORMATION
Description: LGP Project Homepage

Link: VIEW RELATED INFORMATION
Description: Investigators research page

Quality

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.

Personnel

KEN RYAN
Role: INVESTIGATOR
Phone: +64 4 463 6083
Fax: +64 4 463 5331
Email: ken.ryan at vuw.ac.nz
Contact Address:
Victoria University of Wellington
School of Biological Sciences
PO BOX 600
City: Wellington
Postal Code: 6140
Country: New Zealand

SHULAMIT GORDON
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand

Publications/References

Martin, A. 2009. Microbial loop dynamics in Antarctic sea-ice. PhD Thesis Victoria University of Wellington. pp 177

Koh, E. Biodiversity of prokaryotes in Antarctic sea ice. PhD thesis in progress, Victoria University of Wellington, New Zealand.

Rajanahally, M. Ecophysiology of Antarctic sea ice algae. PhD thesis in progress, Victoria University of Wellington, New Zealand.

Koh, EY, Simpson, A, Davy, SK, O’Toole, R, and Ryan KG (2007). Microbial diversity in Antarctic sea ice. New Zealand Marine Sciences Society Annual Conference; Hamilton, New Zealand.

Koh, EY, Davy S., Rajanahally, M, Bryant, L. Martin A, Ryan KG (2008) Antarctic sea-ice microbial ecology. Antarctic New Zealand Annual Conference, Dunedin July 2008.

Bryant, L. Davy S., Koh, EY, Rajanahally, M, Martin A, Ryan KG (2008) Antarctic sea ice and pelagic microbial communities: latitudinal influences on biodiversity and productivity. Antarctic New Zealand Annual Conference, Dunedin July 2008.

Koh, E.Y., Simpson, A.M., Martin, A.R., O’Toole, R., Davy, S.K. and Ryan K.G. (2008) Antarctic sea ice microbial ecology. Polar and Alpine Microbiology Conference. Banff, Canada May 2008.

Ryan KG (2007). LGP Workshop presentation at “Antarctica: 50 years on the ice – just the tip of the iceberg” Conference. Wellington. July 2007.

Koh, E.Y, Abdool, E., Martin, AR., Rajanahally, M., Bryant, L., O’Toole, R., Davy SK, and Ryan KG (2007) Studies in sea ice microbial ecology at Victoria University of Wellington. “Antarctica: 50 years on the ice – just the tip of the iceberg”. Conference, Wellington NZ. July 2007.

Ryan, K.G., Davy, S., O’Toole, R., and Martin, A (2005) Extreme biology in Antarctica. New Zealand Marine Sciences Society Annual Conference; Wellington, New Zealand.

A Martin, KG Ryan, P Ralph and G Fenton (2005). Antarctic Sea Ice Bacteria and Ecosystem Dynamics. NZ Marine Sciences Society Conference Wellington.

Creation and Review Dates

DIF Creation Date: 2005-09-22
Last DIF Revision Date: 2010-02-23