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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.

Geographic Coverage

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Spatial coordinates

N: -77.85

S: -77.85

E: 166.67

W: 166.67

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

Service Keywords

DATA ANALYSIS AND VISUALIZATION >GEOGRAPHIC INFORMATION SYSTEMS

DATA ANALYSIS AND VISUALIZATION >GLOBAL POSITIONING SYSTEMS

Science Keywords

AGRICULTURE >AGRICULTURAL AQUATIC SCIENCES

AGRICULTURE >AGRICULTURAL CHEMICALS

ISO Topic Category

ECONOMY

GEOSCIENTIFIC INFORMATION

Project

EOSDIS > Earth Observing System Data Information System

ESIP > Earth Science Information Partners Program

NDH > Natural Disaster Hotspots

Quality Building upon a methodology pioneered by Sachs et al. (2003), a Gross Domestic Product (GDP) value (US$, 2000, purchase power parity adjusted (PPP)) is estimated for each grid cell. The process begins by determining the contribution of each subnational unit to national GDP using data of varied origin. The ratio of the subnational production estimate to the national GDP is the contribution ratio. ...

Access Constraints None

Use Constraints The Trustees of Columbia University in the City of New York, Center for Hazards
and Risk Research (CHRR), and International Bank for Reconstruction and
...

Ancillary Keywords

CIESIN > Agriculture and Food Security > Agricultural Production >
Natural Resources

CIESIN > Agriculture and Food Security > Agricultural Production >
Risk Management

Data Set Progress

COMPLETE

Originating Center

SEDAC

Data Center

Socioeconomic Data and Applications Center

Data Center URL: http://sedac.ciesin.columbia.edu/
Dataset ID: CIESIN_CHRR_NDH_EQUAKE_PELRD

Data Center Personnel
Name: SEDAC USER SERVICES Phone: +1 845-365-8920 Fax: +1 845-365-8922 Email: ciesin.info at ciesin.columbia.edu Contact Address: 61 Route 9W, P.O. Box 1000 City: Palisades Province or State: NY Postal Code: 10964 Country: USA

World Data Center for Human Interactions in the Environment

Data Center URL: http://sedac.ciesin.columbia.edu/wdc/
Dataset ID: CIESIN_CHRR_NDH_EQUAKE_PELRD

Data Center Personnel
Name: ROBERT CHEN Phone: 1-845-365-8952 Fax: 1-845-365-8922 Email: bchen at ciesin.columbia.edu Contact Address: WDC for Human Interactions in the Environment CIESIN/Columbia University P. O. Box 1000 61 Route 9W City: Palisades Province or State: NY Postal Code: 10964 Country: USA

Distribution

Distribution Media: HTTP

Distribution Size: ~6 MB compressed (V005)

Distribution Format: HDF-EOS

Publications/References

Moderate Resolution Imaging Spectroradiometer (MODIS) publications written by the MODIS Science Team: [available online at http://modis.gsfc.nasa.gov/sci_team/pubs/]

National Aeronautics and Space Administration, 2000, MODIS data products catalog (EOS AM platform): [Greenbelt, Maryland], Goddard Space Flight Center, http://modis.gsfc.nasa.gov/data/dataprod/index.php.

National Aeronautics and Space Administration, 2000, EOS Reference Handbook, a Guide to NASA's Earth Science Enterprise and the Earth Observing System: Greenbelt, Maryland, Goddard Space Flight Center, 256 p. [available online in pdf format at http://eospso.gsfc.nasa.gov/ftp_docs/data_products_vol2.pdf].

Extended Metadata Properties

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Creation and Review Dates

DIF Creation Date: 2007-03-24

Last DIF Revision Date: 2013-01-31

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