The role of viruses in saline Antarctic lakes

• Other Authors: LAYBOURN-PARRY, JOHANNA (hasPrincipalInvestigator), LAYBOURN-PARRY, JOHANNA (processor), Australian Antarctic Data Centre (publisher)
• Format: Dataset
• Language: unknown
• Published: Australian Antarctic Data Centre
• Subjects: geoscientificInformation; inlandWaters; EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS; SALINE LAKES; EARTH SCIENCE; BIOSPHERE; AQUATIC ECOSYSTEMS; LAKES; VIRUSES; BIOLOGICAL CLASSIFICATION; ANTARCTICA; BACTERIA; CHLAMYDOMONAS TYPE 2; CHLOROPHYLL; CONDUCTIVITY; CRYPTOPHYTE TYPE 1; CRYPTOPHYTES; DATE; DEPTH; DISSOLVED OXYGEN CONTENT; HETEROTROPHIC BACTERIA; HNAN; ICE DEPTH; LEUCINE BPR; LOCATION; NH4; NO3; PAR; PH; PHOTOTROPHIC BACTERIA; PO; PPR; PYRAMIMONAS; SNOW DEPTH; SNOWCOVER; TEMPERATURE; THYMIDINE BPR; TOTAL OXYGEN CONTENT; VIRUS; FIELD SURVEYS; FIELD INVESTIGATION; CONTINENT > GEOGRAPHIC REGION > POLAR; Antarctic; Ace Lake; Pendant Lake; Highway Lake; Antarc*; Antarctica
• Online Access: https://researchdata.ands.org.au/role-viruses-saline-antarctic-lakes/699847; https://doi.org/10.4225/15/574BB9E371F32; https://data.aad.gov.au/metadata/records/ASAC_2306; http://nla.gov.au/nla.party-617536

Metadata record for data from ASAC Project 2306 See the link below for public details on this project. --- Public Summary from Project --- In the last ten years aquatic microbial ecologists have come to appreciate the potential importance of viruses in microbial community dynamics. Bacteria, algae and protists are all infected by viruses and suffer lysis. This impacts on the cycling of carbon and essential inorganic nutrients (nitrogen and phosphorus) in marine and freshwater ecosystems. In order to produce accurate models of these biogeochemical processes, we must gain a full understanding of the nature, abundances, infectivity and turnover rates of viruses in aquatic ecosystems. There is clear evidence that viruses may also maintain clone diversity of microbial elements in the plankton directly by gene transmission or transduction, and indirectly by eliminating dominant host species. Moreover, they also appear to be grazed, along with bacteria, by heterotrophic nanoflagellates. Thus the role of viruses is multifarious and there is a growing realisation that these tiny particles, which can reach abundances of 108 ml-1 in aquatic ecosystems, may play a major role in mediating community dynamics and geochemical processes. We propose investigating the role of viruses marine microbial communities, by using natural, simplified model ecosystems. They are dominated by a microbial plankton, there are no fish and few or no zooplankton. The saline lakes are marine derived systems retaining elements of the marine microbial plankton, and are consequently analogues of the marine environment.In addition to more easily clarify the role of viruses in biogeochemical cycling we will incorporate a study of cryconite holes. The dataset is stored as an excel spreadsheet, and divided into 3 sheets - one for each lake studied: Ace Lake, Pendant Lake, Highway Lake. A text document detailing the methods used in the study is also available for download. The fields in this dataset are: Location Date Sampling depth snowcover snow depth ice depth PAR temperature conductivity pH NO3 PO NH4 Total Oxygen Content Dissolved Oxygen Content Chlorophyll Virus Heterotrophic bacteria Phototrophic bacteria Pyramimonas Cryptophytes Chlamydomonas Type 2 HNAN Cryptophyte Type 1 Bacteria PPR Leucine BPR Thymidine BPR