The structural and functional diversity of the shallow-water benthic community at Terra Nova Bay

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: The structural and functional diversity of the shallow-water benthic community at Terra Nova Bay
Description:
Abstract:
The biodiversity of the seafloor community at Terra Nova Bay was investigated to determine the structural and functional diversity of the benthic community and to extend the latitudinal gradient survey beyond McMurdo Sound. Three dive sites were established in Tethys Bay in the 02-03 season. Two 20m transect lines were laid on the seafloor within the 15-25m depth stratum starting from haphazardly chosen starting points. The transects were videoed using a diver-held digital video camera at a fixed height of (a) 70cm above the bottom (for the broader scale analysis of habitat structure) and (b) 40cm above the bottom (to allow for more accurate species identifications). Along one of the 20m transects, core samples were collected from five randomly chosen positions. At each position, two small sediment cores (20mm diam., 50mm deep) were collected, one to determine sediment grain size and benthic chlorophyll a content and one to determine the natural stable isotope signature of carbon and nitrogen of the sediment. Also at each position, one large core (70mm diam., 100mm deep) was collected to estimate the abundance and diversity of the benthic macrofauna. Video sampling was stratified by habitat and additional footage was taken of biota in the study area for a general picture of the site. In addition to the survey work, a video sledge was used to survey deeper areas of the seafloor from the Malippo (Italian program boat). The sledge consisted of two frame-mounted high resolution colour CCD video cameras with independent light sources scaling lasers and depth/heading instrumentation. The equipment was towed along the seafloor behind the boat and its position recorded using GPS. The sledge was kept approx 1m above the seafloor. Two transects were surveyed running south of Faraglione in deep water (one at 50-80m, the other at 90-110m) and 10 locations along each video transect were sampled using a Van Veen grab. From each grab, 2 cores of sediment were collected (5cm diam, 10cm deep) to determine grain size, stable isotope signature and benthic chlorophyll concentration. In addition, a shallower area (30-40m) was surveyed nearer to Faraglione. In the 06-07 season two further locations, Gerlache Inlet and south of Tethys Bay were survey with the above methods. The effects of disturbance by anchor ice on epibenthic flora and fauna was investigated at south Tethys Bay also and remote video sampling was conducted in the wider Terra Nova bay area to allow a more general picture of the benthos of the region to be developed.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Norkko, A. Thrush, S.F. Cummings, V.J. Gibbs, M.M. Andrew, N.L. Norkko, J. Schwarz, A-M. Trophic structure of coastal Antarctic food webs associated with changes in sea ice and food supply. Ecology 88: 2810-2820, 2007.
Supplemental_Information:
REFERENCE: Thrush, S.F., Hewitt, J.E., Cummings, V.J., Norkko, A. And Chiantore, M. 2010. ß-Diversity and species accumulation in Antarctic coastal benthos: Influence of habitat, distance and productivity on ecological connectivity. PLOS One 5(7): e11899 doi:10.1371/journal.pone.0011899
Supplemental_Information:
REFERENCE: Thrush, S. Dayton, P. Cattaneo-Vietti, R. Chiantore, M. Cummings, V. Andrew, N. Hawes, I. Kim, S. Kvitek, R. Schwarz, A.-M. Broad-scale factors influencing the biodiversity of coastal benthic communities of the Ross Sea. Deep-sea research II 53: 959-971, 2006.
Supplemental_Information:
REFERENCE: Grotti, M. Soggia, F. Lagomarsino, C. Dalla Riva, S. Goessler, W. Francesconi, K.A. 2008 Natural variability and distribution of trace elements in marine organisms from Antarctic coastal environments. Antarctic science 20(1): 39-51 DOI: 10.1017/S0954102007000831
Supplemental_Information:
REFERENCE: Norkko, J. Norkko, A. Thrush, S.F. Cummings, V.J. 2005 Detecting growth under environmental extremes: Spatial and temporal patterns in nucleic acid ratios in two Antarctic bivalves. Journal of experimental marine biology and ecology 326: 144-156
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20030116
Ending_Date: 20061127
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 164.05
East_Bounding_Coordinate: 164.1
North_Bounding_Coordinate: -74.05
South_Bounding_Coordinate: -74.683
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > AQUATIC ECOSYSTEMS > BENTHIC HABITAT
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > AQUATIC ECOSYSTEMS > COASTAL HABITAT
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > COMMUNITY STRUCTURE
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 > 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: VONDA CUMMINGS
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: NIWA
Address: PO Box 11-115
City: Hamilton
Country: New Zealand
Contact_Voice_Telephone: +64 7 856 7026
Contact_Facsimile_Telephone: +64 7 856 0151
Contact_Electronic_Mail_Address: v.cummings@niwa.co.nz
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: 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: K082_2001_2002_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:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.lgp.aq/http://www.niwa.co.nz/rc/prog/an...
Access_Instructions:
LGP-Latitudinal Gradient Project
Fees: Not Available
Back to Top
Metadata_Reference_Information:
Metadata_Date: 20051011
Metadata_Review_Date: 20101208
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
Back to Top
[ Update this Record ]


Link to Web Site