The distribution and abundance patterns of meroplankton in the Ross Sea regionEntry ID: K018_2002_2008_NZ_1
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Abstract: The pelagic community of the Ross Sea consists of a permanent component (=holoplankton) and a temporary component which is primarily made up from the larval stages of benthic marine invertebrates and fish (= the meroplankton). The distribution and abundance pattern of the meroplankton in the Ross Sea was investigated. A combined morphological and molecular approach was used to identify the ... common larval "types" collected from sites in the Ross Sea along the Victoria Land coast including McMurdo Sound, Granite Harbour, Gerlache Inlet (Terra Nova Bay), and Cape Hallett. Daily samples (where possible) of meroplankton larva were collected in early summer (Nov/Dec) using a 100 micron collapsible plankton net. Plankton samples were sorted fresh, the larvae were quantified and specimens were photographed and preserved for DNA sequence analysis and morphological description. One plankton sample from each site was preserved in a formalin based Steedman's fix and taken to the University of Auckland as a reference samples. A filter bag from the seawater intake to the RO-plant at Scott Base was also analysed. Adult marine invertebrate samples were received from other events sampling efforts and used to form the beginnings of an adult invertebrate database by comparing larval gene sequences with adult sequences. The questions the project specifically addresses are: 1) Is there a latitudinal gradient in meroplankton biodiversity and abundance along the Victoria Land Coast?, and 2) using molecular sequencing, can we quantify the distribution and abundance of common marine invertebrate larvae for a better understanding of the functioning of marine benthic communities in the Ross Sea?
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Start Date: 2002-11-21Stop Date: 2002-12-14
Start Date: 2003-11-22Stop Date: 2003-12-13
Start Date: 2004-11-14Stop Date: 2004-12-05
Start Date: 2006-11-13Stop Date: 2006-12-06
Start Date: 2007-11-14Stop Date: 2007-12-06
Start Date: 2008-11-17Stop Date: 2008-12-06
Start Date: 2009-11-17Stop Date: 2009-12-01
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > FISH
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES
BIOSPHERE > AQUATIC ECOSYSTEMS > PLANKTON > ZOOPLANKTON
BIOSPHERE > AQUATIC ECOSYSTEMS > BENTHIC HABITAT
BIOSPHERE > AQUATIC ECOSYSTEMS > PELAGIC HABITAT
BIOSPHERE > AQUATIC ECOSYSTEMS > MARINE HABITAT
BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > BIODIVERSITY FUNCTIONS
BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > COMMUNITY STRUCTURE
ISO Topic Category
Quality Values provided in temporal and spatial coverage are approximate only.
Taken from the 2008-2009 Progress Report:
Field work was completed in the 2008 winter at Mawson Station. All the sample collections took place at Auster Emperor Penguin Colony 60 kms ENE of Mawson Station. The 3 formal sampling periods were: 1) 16-31 May 2008, 100 adults; 2) 1-16 August 2008 ... 200 adults (hopefully 100 males and 100 females; 3) 28 Aug - 2 Sept 2008, 100 young chicks; 4) 16-27 November, 100 adults (mixed sexes) and 100 chicks. In addition, we visited the colony for checks on mortality every week.
The field work progressed smoothly and almost exactly to schedule. each sampling period had one-half to 2 days delays or interruptions due to weather. Sampling was completed on 27 November 2008 and we departed Mawson on 9 December with all samples frozen or preserved.
During the winter at Mawson, we sampled the yolks of 100 abandoned eggs for future analysis for maternal antibodies and/or stable isotope profiles. In addition, we conducted field (lab-based) necropsies on 120 chicks and 9 adults which were collected as carcasses. In doing those, we collected bursa and spleen tissues from the chicks to be used to attempt virus isolation of IBDV.
Now, all the blood serum and swab samples have been returned to Australia. sets of sample shave been sent to colleagues for separate analyses. Our expectation is for:
1) IBDV extraction and RT-PCR sequence analysis to be completed by late 2009 by Dr. Daral Jackwood, Ohio State University.
2) Serology on blood serum samples for IBD, Newcastle disease, avian influenza to be conducted by Dr Gary Miller (co-CI) at WA Department of Agriculture virology lab by the end of 2009.
3) Stable isotope analyses of blood samples to investigate food resources will be conducted by Dr. Mark Hindell, UTas by late 2009
4) Targeted search for specific bacterial pathogens in samples using PCR to be conducted by Dr Gary Miller by the end of 2009.
5) Final collation and analysis of all observational data (mortalities, colony counts, subject weights and measurements etc) to be completed by late 2009.
Difficulties affecting project:
Potentially serious problems did occur with shipping conditions for samples. We were meant to leave Mawson Station in mid-December on the Aurora Australis which has adequate freezers on board to cope with our -70 sample requirements. Then the scheduled changed to a departure form Davis with a helicopter (or by CASA aircraft) link to Davis. Resupply to Mawson to be completed by the Amderma--a Russian ship with no laboratory facilities or ultracold freezers. That forced us to transport the samples from Mawson to Davis by helicopter before departing on the AA. I believe we worked this out satisfactorily, but the shipping was not up to the standard that we should expect. We needed more cargo space to move the samples in a dry shipper--the best way to transport samples at -70-- or facilities to produce dry ice on station to ship the samples in conventional eskies.
Access Constraints These data are publicly available for download from the provided URL.
Copies of the referenced publications are available for download to AAD staff only from the provided URL.
Use Constraints This data set conforms to the PICCCBY Attribution License (http://creativecommons.org/licenses/by/3.0/).
Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2954 when using these data.
Data Set Progress
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Phone: +61 8 9346 2050
Fax: +61 8 9346 2912
Email: gshellam at cyllene.uwa.edu.au
Department of Microbiology The Queen Elizabeth II Medical Centre University of Western Australia
Province or State: Western Australia
Postal Code: 6009
Role: DIF AUTHOR
Phone: +61 3 6221 5038 (international)
Phone: (03) 6221 5038 (within Australia)
Fax: +61 3 6221 5050 (international)
Fax: (03) 6221 5050 (within Australia)
Email: Alicja.Mosbauer at oceans.gov.au
National Oceans Office GPO Box 2139
Province or State: Tasmania
Postal Code: 7000
Woods R., Jones H.I., Watts J., Miller G.D., Shellam G.R. (2009), Diseases of Antarctic seabirds, In: Kerry K.R., Riddle M.J. Health of Antarctic Wildlife: A Challenge for Science and Policy, 35-56
Watts J.M., Miller G.D., Shellam G.R. (2009), Infectious bursal disease virus and Antarctic birds, In: Kerry K.R., Riddle M.J. Health of Antarctic Wildlife: A Challenge for Science and Policy, 95-106
Kerry K.R., Irvine L., Beggs A., Watts J. (2009), An unusual mortality event among Adelie penguins in the vicinity of Mawson Station, Antarctica, In: Kerry K.R., Riddle M.J. Health of Antarctic Wildlife: A Challenge for Science and Policy, 107-112
Creation and Review Dates
DIF Creation Date: 2008-02-24
Last DIF Revision Date: 2011-12-19