Diversity of marine benthic communities at Granite Harbour, the effect of ocean acidification on the Antarctic gooeyduc Laternula elliptica and the effect of pulsed primary food source on the benthic community
Entry ID: K082_2008_2009_NZ_1

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Summary
Abstract: To continue to improve our understanding of Ross Sea marine benthic ecosystem structure and function, investigations were conducted to determine how key benthic organisms (i) respond to ocean acidification, (ii) utilise pulsed addition of primary food sources, and (iii) how the diversity and abundance of benthic communities varies over time. (i) Specimens of the Antarctic gooeyduc Laternula elliptica were collected and used for laboratory experiments to investigate the impacts of ocean acidification on key Antarctic benthic species. (ii) The uptake and incorporation of a pulsed input of an important primary food source (ice algae) by benthic invertebrates was investigated via a field experiment in Granite Harbour. Concentrated ice algae was added to seafloor chambers containing known densities of ophiuroids and molluscs. The uptake and incorporation of this food by was measured by sampling these key species and associated sediments, including fluxes of oxygen and nutrients. (iii) Sampling was conducted to determine benthic invertebrate community composition, sediment characteristics, and seafloor habitat structure. Sampling involved SCUBA diving. Physical habitat characteristics and biodiversity of the seafloor were characterised using video. The resulting footage will be analysed for the abundance of specific epifauna and flora, and species composition. Nested within this video footage, we also sampled epi- and macro-fauna and flora, and sediments. Samples of epi- and macro-fauna and flora, and sediments were collected for determination of isotopic C and N composition and sediment characteristics.

Related URL
Link: VIEW PROJECT HOME PAGE
Link: VIEW PROJECT HOME PAGE


Geographic Coverage
 N: -77.0159 S: -77.0159  E: 162.8763  W: 162.8763
 Min Depth: 13  Max Depth: 22

Temporal Coverage
Start Date: 2008-11-01
Stop Date: 2008-11-15


Location Keywords
CONTINENT > ANTARCTICA > GRANITE HARBOUR
CONTINENT > ANTARCTICA
GEOGRAPHIC REGION > POLAR


Science Keywords
BIOSPHERE >AQUATIC ECOSYSTEMS >BENTHIC HABITAT    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >COASTAL HABITAT    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >COMMUNITY DYNAMICS >COMMUNITY STRUCTURE    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS    [Definition]


ISO Topic Category
BIOTA
ENVIRONMENT
OCEANS


Platform
FIELD SURVEYS    [Information]


Project
LGP >Latitudinal Gradient Project    [Information]
EBA >Evolution and Biodiversity in the Antarctic    [Information]


Data Set Progress
IN WORK


Data Center
Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand    [Information]
Data Center URL: http://www.antarcticanz.govt.nz/

Data Center Personnel
Name: SHULAMIT GORDON
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


Personnel
VONDA CUMMINGS
Role: INVESTIGATOR
Phone: +64 7 856 7026
Fax: +64 7 856 0151
Email: v.cummings at niwa.co.nz
Contact Address:
NIWA
PO Box 11-115
City: Hamilton
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



Creation and Review Dates
DIF Creation Date: 2005-10-11
Last DIF Revision Date: 2009-07-02

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