[Parent_DIF='K082_2001_2007_NZ']
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The role of Phyllophora antarctica in structuring macrofaunal communities at Cape Evans Entry ID: K082_2001_2002_NZ_3 |
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Summary
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Abstract:
Benthic suveys indicate that Phyllophora is the only attached macroalga present at Cape Evans. Attached and drift algal biomass was quantified in quadrats (61) between 0 - 30m depth using stratified random sampling. The alga formed an extensive cover (mostly occurring as loose-lying accumulations) at all depths sampled. All algae were dried and weighed. Two techniques were used to determine the photosynthetic activity of the seaweeds, PAM fluorometry in situ using a diver operated submersable fluorometer and seven patches of algae were measured on five replicate fronds from the top to the bottom of each plant. Each measurement was taken at a standard distance of 5mm from the plant surface and within 5cm of the apical tip of each frond. Benthic core samples were taken from under the drift algae to assess the structuring effect of drift Phyllophora accumulations on underlying macrofaunal communities. Macrofauna cores were sieved, preserved in 70% isopropyl alcohol, stained with Rose Bengal, sorted and identified to the lowest taxonomic level possible. Sediment cores were also taken and analysed for sediment particle size, organic matter, benthic chlorophyll a content and stable isotope signature of carbon and nitrogen.
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Related URL
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Link:
VIEW PROJECT HOME PAGE
Link: VIEW PROJECT HOME PAGE Description: LGP-Latitudinal Gradient Project |
Parent DIF
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This data set description is a member of a collection. The collection is described in K082_2001_2007_NZ |
Geographic Coverage
| N: -77.6347 | S: -77.6347 | E: 166.4145 | W: 166.4145 |
| Min Depth: 0 | Max Depth: 25 |
Temporal Coverage
| Start Date: 2001-11-06 |
| Stop Date: 2003-11-05 |
Location Keywords
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CONTINENT
> ANTARCTICA
> CAPE EVANS
GEOGRAPHIC REGION > POLAR |
Science Keywords
| OCEANS >OCEAN OPTICS >FLUORESCENCE [Definition] |
| OCEANS >OCEAN OPTICS >PHOTOSYNTHETICALLY ACTIVE RADIATION [Definition] |
| BIOLOGICAL CLASSIFICATION >PLANTS >MACROALGAE (SEAWEEDS) >RED ALGAE |
| OCEANS >OCEAN CHEMISTRY >PIGMENTS >CHLOROPHYLL [Definition] |
ISO Topic Category
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BIOTA
OCEANS |
Project
| LGP >Latitudinal Gradient Project [Information] |
| EBA >Evolution and Biodiversity in the Antarctic [Information] |
Data Set Progress
| COMPLETE |
Data Center
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Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand
[Information]
Data Center URL: http://www.antarcticanz.govt.nz/
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Personnel
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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 |
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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
L. Cunningham. (2003), Benthic diatom communities of coastal marine environments in the Windmill Islands, Antarctica, PhD Thesis, University of Tasmania.
Creation and Review Dates
DIF Creation Date:
2003-06-13
Last DIF Revision Date:
2011-11-09
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