Functional dynamics of the microbial loop in saline lakes of the Vestfold Hills

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Functional dynamics of the microbial loop in saline lakes of the Vestfold Hills
Description:
Abstract:
Metadata record for data expected from ASAC Project 919. See the link below for public details on this project. The plankton dynamics of Ace Lake, a sline, meromictic basin in the Vestfold Hills, eastern Antarctica was studied between December 1995 and February 1997. The lake supported two distinct plankton communities; an aerobic microbial community in the upper oxygenated mixolimnion and an anaerobic microbial community in the lower anoxic monimolimnion. Phytoplankton development was limited by nitrogen availability. Soluble reactive phosphorus was never limiting. Chlorophyll a concentrations in the mixolimnion ranged between 0.3 and 4.4 micrograms per litre during the study period and a deep chlorophyll maximum persisted throughout the year below the chemo/oxycline. Bacterioplankton abundance showed considerable seasonal variation related to light and substrate availability. Autotrophic bacterial abundance ranged between 0.02 and 8.94 x 10 to the 8 per litre and heterotrophic bacterial abundance between 1.26 and 72.8 x 10 to the 8 per litre throughout the water column. the mixolimnion phtyoplankton was dominated by phytoflagellates, in particular Pyramimonas gledicola. P. geldicola remained active for most of the year by virtue of its mixotrophic behaviour. Photosynthetic dinoflaggelates occurred during the austral summer, but the entire population encysted for the winter. Two communities of heterotrophic flagellates were apparent; a community living in the upper monimolimnion and a community living in the aerobic mixolimnion. Both exhibited different seasonal dynamics. The cliliate community was dominated by the autotroph Mesodinium rubrum. The abundance of M. rubrum peaked in summer. A proportion of the population encysted during winter. Only one other ciliate, Euplotes sp., occurred regularly. Two species of Metazoa occurred in the mixolimnion; a calanoid copepod (Paralabidocera antarctica) and a rotifer (Notholca sp.). However, there was no evidence of grazing pressure on the microbial community. In common with most other Antarctic lakes, Ace Lake appears to be driven by 'bottom-up' forces. The fields in this dataset are: Ace Lake Aerobic monimolimnion Ammonia Ammonium Ash free dry weight Autotrophic Bacteria Bacterial Production Leucine Bacterial Production Thymidine Biomass Carbon Cell Chlorophyll a Concentration Copepods Date Date Code Depth Diatoms Dinoflagellates Dissolved Organic Carbon Dissolved Oxygen Doubling Generation Time Heterotrophic Bacteria Heterotrophic Nanoflagellates Ice Thickness Intrinsic Growth Rate Julian Day Julian Month Mesodinium rubrum Mesodinium rubrum cysts Mixolimnion Monimolimnion Nauplii Nitrate Nitrite Notholca sp. Other Ciliates Oxygenated strata Paralabidocera antarctica copepodid Paralabidocera antarctica naupliar Particulate Organic Carbon Phosphate Phototrophic Nanoflagellates Salinity Season Soluble Reactive Phosphorus Total Ciliates Water Temperature
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Bell, E.M. and Laybourn-Parry, J. (1999) Annual plankton dynamics in an Antarctic saline lake. Freshwater Biology, 41: 507-219
Supplemental_Information:
REFERENCE: Laybourn-Parry, J., Bell, E.M., Roberts, E.C. (2000) Protozoan growth rates in Antarctic lakes. Polar Biology, 23: 445-451
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19951201
Ending_Date: 19970228
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 78.185
East_Bounding_Coordinate: 78.185
North_Bounding_Coordinate: -68.4733
South_Bounding_Coordinate: -68.4733
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > LAKES
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > WATER DEPTH
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CHLOROPHYLL
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CONDUCTIVITY
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > DISSOLVED GASES
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > LIGHT TRANSMISSION
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > OXYGEN
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > WATER TEMPERATURE
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > FLAGELLATES
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > CILIATES
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > DIATOMS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > AQUATIC ECOSYSTEMS > PLANKTON
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > AQUATIC ECOSYSTEMS > LAKES > SALINE LAKES
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > TROPHIC DYNAMICS
Theme_Keyword: GROUND-BASED OBSERVATIONS
Theme_Keyword: TOC > TOTAL ORGANIC CARBON ANALYZER
Theme_Keyword: Ace Lake
Theme_Keyword: Aerobic Monimolimnion
Theme_Keyword: Ammonia
Theme_Keyword: Ammonium
Theme_Keyword: Ash
Theme_Keyword: Autotrophic Bacteria
Theme_Keyword: Bacterial Production Leucine
Theme_Keyword: Bacterial Production Thymidine
Theme_Keyword: Biomass
Theme_Keyword: Carbon
Theme_Keyword: Cell
Theme_Keyword: Chlorophyll A
Theme_Keyword: Concentration
Theme_Keyword: Copepods
Theme_Keyword: Date
Theme_Keyword: Date Code
Theme_Keyword: Depth
Theme_Keyword: Diatoms
Theme_Keyword: Dinoflagellates
Theme_Keyword: Dissolved Organic Carbon
Theme_Keyword: Dissolved Oxygen
Theme_Keyword: Doubling
Theme_Keyword: Generation Time
Theme_Keyword: Heterotrophic Bacteria
Theme_Keyword: Heterotrophic Nanoflagellates
Theme_Keyword: Ice Thickness
Theme_Keyword: Intrinsic Growth Rate
Theme_Keyword: Julian Day
Theme_Keyword: Julian Month
Theme_Keyword: Mesodinium Rubrum
Theme_Keyword: Mesodinium Rubrum Cysts
Theme_Keyword: Mixolimnion
Theme_Keyword: Monimolimnion
Theme_Keyword: Nauplii
Theme_Keyword: Nitrate
Theme_Keyword: Nitrite
Theme_Keyword: Notholca Sp.
Theme_Keyword: Other Ciliates
Theme_Keyword: Oxygenated Strata
Theme_Keyword: Paralabidocera Antarctica Copepodid
Theme_Keyword: Paralabidocera Antarctica Naupliar
Theme_Keyword: Particulate Organic Carbon
Theme_Keyword: Phosphate
Theme_Keyword: Phototrophic Nanoflagellates
Theme_Keyword: Salinity
Theme_Keyword: Season
Theme_Keyword: Srp
Theme_Keyword: Total Ciliates
Theme_Keyword: Water Temperature
Theme_Keyword: BIOTA
Theme_Keyword: ENVIRONMENT
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: INLAND WATERS
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA > VESTFOLD HILLS
Place_Keyword: CONTINENT > ANTARCTICA > ACE LAKE
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: The data are available online at the url given below.
Use_Constraints:
This data set conforms to the PICCCBY Attribution License (http://creativecommons.org/licenses/by/3.0/).
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: JOHANNA LAYBOURN-PARRY
Contact_Person_Primary:
Contact_Person: ELANOR M BELL
Contact_Position: TECHNICAL CONTACT
Contact_Position: DIF AUTHOR
Contact_Position: INVESTIGATOR
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: University of Bristol
Address: School of Geographical Sciences
Address: University Road
City: Clifton
State_or_Province: Bristol
Postal_Code: BS8 1SS
Country: UNITED KINGDOM
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Universität Potsdam
Address: Maulbeerallee 2
Address: Institut für Biochemie und Biologie
City: Potsdam
Postal_Code: D-14469
Country: Germany
Contact_Voice_Telephone: +44 (0117) 3314120
Contact_Voice_Telephone: +49 0 331 977 1907
Contact_Facsimile_Telephone: +49 0 331 977 1948
Contact_Electronic_Mail_Address: Jo.Laybourn-Parry@bristol.ac.uk
Contact_Electronic_Mail_Address: ebell@rz.uni-potsdam.de
Back to Top
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
Back to Top
Spatial_Reference_Information:
Back to Top
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: AU/AADC > Australian Antarctic Data Centre, Australia
Contact_Person: DATA OFFICER AADC
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Australian Antarctic Division
Address: 203 Channel Highway
City: Kingston
State_or_Province: Tasmania
Postal_Code: 7050
Country: Australia
Contact_Voice_Telephone: +61 3 6232 3244
Contact_Facsimile_Telephone: +61 3 6232 3351
Contact_Electronic_Mail_Address: metadata@aad.gov.au
Resource_Description: ASAC_919
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://data.aad.gov.au
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://data.aad.gov.au/aadc/portal/download_file.c...
Access_Instructions:
Download page for Australian Antarctic Data Centre
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://secure3.aad.gov.au/proms/public/projects/r...
Access_Instructions:
Public information for ASAC project 919
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://data.aad.gov.au/aadc/metadata/citation.cfm?...
Access_Instructions:
Citation reference for this metadata record and dataset
Fees: Not Available
Back to Top
Metadata_Reference_Information:
Metadata_Date: 20000808
Metadata_Review_Date: 20140110
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: JOHANNA LAYBOURN-PARRY
Contact_Position: TECHNICAL CONTACT
Contact_Position: DIF AUTHOR
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: University of Bristol
Address: School of Geographical Sciences
Address: University Road
City: Clifton
State_or_Province: Bristol
Postal_Code: BS8 1SS
Country: UNITED KINGDOM
Contact_Voice_Telephone: +44 (0117) 3314120
Contact_Electronic_Mail_Address: Jo.Laybourn-Parry@bristol.ac.uk
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Back to Top
[ Update this Record ]


Link to Web Site