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Analysis of the community structure of subtidal reefs at Cape Armitage (species composition of invertebrates and fish, sediment spicule mat depth, sediment type, sedimentation rates and tissue sampling for analysis)
Entry ID: K054_1987_1989_NZ_1


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Summary
Abstract: A dive site was selected at Cape Armitage to conduct a marine benthos survey. The water was approximately 25m deep and the bottom was found to be rocky and inhabited by sponges. Other sites were dived to carry out a survey and assess the area for further work. These sites included Pram Point, Turtle Rocks, the reef drop off adjacent to McMurdo Station and the reverse osmosis hole at Scott Base. To survey the marine benthos, two 10m x 10m squares were marked on the sea floor. Within each site, 6 random 1square meter quadrats were surveyed. All organisms within each quadrat were counted and measured. To survey larger, less abundant species, five strip transects were monitored within each site. Each transect was 1m x 10m in area and all large invertebrate species were counted and measured. Their positions on the transect was plotted to allow a future survey aimed at assessing the longevity of large sponges. Sediment spicule mat depth and consistency was also recorded. Sediment type and depth was measured. Three replicate sediment samples were taken to characterize the substrate and rates of sedimentation were determined by installing sediment traps. The site was resurveyed and photographed a year later, with the identity and number of all the species found within each quadrat recorded. Each species sizes were re-measured. Fish counts were also made within both sites. Three 10m x 2m corridors were surveyed within each site and all fish were counted and identified. During both seasons, samples of each species were collected for biochemical investigations. In the first season, 35 benthic species were collected for bioassay of antiviral/antitumour activity. Most of these were benthic encrusting invertebrates. In the second season, 150g of each species found on the reef was collected to test for heterogeneity in each species biochemistry. A 50g sample of all but the rarest species was taken. A small portion was used as a voucher specimen and the remainder frozen. Using this method, little mortality was induced as the basal portion together with at least two thirds of erect portions of each individual was left intact. (Most benthic invertebrates heal quickly and the excised tissue is rapidly replaced). Each species was photographed in situ and again in the laboratory. Colour, texture, consistency, etc was recorded immediately and notes were taken relating to the specimen's ecology and physiology.

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Geographic Coverage
 N: -77.85 S: -77.85  E: 166.6667  W: 166.6667

Temporal Coverage
Start Date: 1987-11-05
Stop Date: 1987-11-18

Start Date: 1988-10-14
Stop Date: 1988-11-24


Location Keywords
CONTINENT > ANTARCTICA
CONTINENT > ANTARCTICA > ROSS ISLAND
CONTINENT > ANTARCTICA > CAPE ARMITAGE
GEOGRAPHIC REGION > POLAR


Science Keywords
BIOLOGICAL CLASSIFICATION >ANIMALS/VERTEBRATES >FISH >RAY-FINNED FISHES
BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >ARTHROPODS >CRUSTACEANS    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >CNIDARIANS    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >ECHINODERMS    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >MOLLUSKS    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >SPONGES    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >TUNICATES
BIOSPHERE >AQUATIC ECOSYSTEMS >BENTHIC HABITAT    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >REEF HABITAT    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >MARINE HABITAT    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >SPECIES/POPULATION INTERACTIONS >EVOLUTIONARY ADAPTATION    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >COMMUNITY DYNAMICS >BIODIVERSITY FUNCTIONS    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >COMMUNITY DYNAMICS >COMMUNITY STRUCTURE    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS    [Definition]


ISO Topic Category
BIOTA


Platform
FIELD SURVEYS    [Information]
FIELD INVESTIGATION    [Information]


Data Set Progress
COMPLETE


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
CHRIS BATTERSHILL
Role: INVESTIGATOR
Phone: +61 (07) 4753 4431
Fax: +61 (07) 4772 5852
Email: c.battershill at aims.gov.au
Contact Address:
Australian Institute of Marine Science
PMB 3, Townsville MC
City: Townsville
Province or State: Queensland
Postal Code: 4819
Country: Australia


CEISHA POIROT
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: c.poirot at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
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
Battershill, C. 1992 Icy sponges. New Zealand science monthly 3(10): 8-9

Battershill, C. 1995 Under the Antarctic sea ice: the sponge gardens. Water and atmosphere 3(1): 24-25

Battershill, C.N. Blunt, J.W. Munro, M.H.G. Barns, G. Dale, F.M. 1989 Antiviral/antitumour activity in Antarctic marine invertebrate extracts - immediate results. New Zealand Antarctic record 9(2): 53-63

Battershill, C.N. 1989 Distribution and abundance of benthic marine species at Cape Armitage, Antarctica - initial results. New Zealand Antarctic record 9(2): 35-52

Battershill, C.N. 1990 The chemical ecology of Antarctic benthic marine invertebrates - initial observations. New Zealand Antarctic record 10(1): 9-22

Battershill, C.N. 1990 Temporal changes in Antarctic marine benthic community structure. New Zealand Antarctic record 10(1): 23-27

Creation and Review Dates
DIF Creation Date: 2009-05-21
Last DIF Revision Date: 2009-06-06


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