The role of Phyllophora antarctica in structuring macrofaunal communities at Cape Evans
Entry ID: K082_2001_2002_NZ_3

[ Update this Record ]

Summary
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.

Related URL
Link: VIEW PROJECT HOME PAGE
Link: VIEW PROJECT HOME PAGE
Description: LGP-Latitudinal Gradient Project


Parent DIF
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
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
BIOTA
OCEANS


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


Publications/References
Norkko, A. Thrush, S.F. Cummings, V.J. Funnell, G.A. Schwarz, A.-M. Andrew, N.L. Hawes, I. Ecological role of Phyllophra antarctica drift accumulations in coastal soft-sediment communities of McMurdo Sound, Antarctica. Polar biology 27: 482-494, 2004.

Schwarz, A-M. Hawes, I. Andrew, N. Norkko, A. Cummings, V. Thrush, S. Macroalgal photosynthesis near southern global limit for growth; Cape Evans, Ross Sea, Antarctica. Polar biology 26: 789-799, 2003.

Schwarz, A.-M. Hawes, I. Andrew, N. Mercer, S. Cummings, V. Thrush, S. Primary production potential of non-geniculate coralline algae at Cape Evans, Ross Sea, Antarctica. Marine ecology progress series 294: 131-140, 2005.

Creation and Review Dates
DIF Creation Date: 2005-10-11
Last DIF Revision Date: 2008-04-22

[ Update this Record ]


Link to Web Site