Genetic variation within and among moss species populations in the Ross Sea Region
A detailed genetic analysis of genetic variation was conducted on samples of mosses collected at locations around the Ross Sea Region including Cape Bird, Cape Evans, Cape Royds, Cape Crozier, Cape Chocolate, Marble Point, the Garwood Valley, the Taylor Valley (Lake Fryxell and Lake Bonney), the Miers Valley, Granite Harbour, Bratina Island, Edmonson Point, Mt Melbourne, Canada Glacier and in the ... vicinity of Scott Base (Arrival Heights).
There were 7 species of mosses sampled including Bryum argenteum, Bryum pseudotriquetrum, Pottia heimii, Sarconeurum glaciale, Ceratodon purpureus, Henediella heimii and Campylopus pyriformis.
A detailed genetic analysis (RAPD) was carried out on collected samples to investigate:
a) the within-transect genetic variation of each species in areas of lush growth and sparse growth,
b) the extent of within and among population genetic variation for each species,
c) mutation within single long, old shoots and within clumps,
d) recolonisation of mosses in disturbed ares, such as roadwork and building sites and
e) dispersal of mosses in Antarctica, by collecting specimens from very isolated locations and recently exposed ground, near reterating glacier fronts.
The investigator is now continuing this work through the Australian Antarctic Division. Please see related metadata.
The samples are thought to be stored at the University of Waikato Allen Herbarium. If they exist, they are not catalogued. Some samples are held by the investigator at the Australia National University. Please contact her for more details.
Data Set Progress
+61 2 6257 0501
mary.skotnicki at anu.edu.au
skotnicki at actewagl.net.au
Research School of Biological Sciences
Australia National University
PO Box 475
Province or State:
+64 3 358 0200
+64 3 358 0211
c.poirot at antarcticanz.govt.nz
Antarctica New Zealand
Private Bag 4745
+64 3 358 0200
+64 3 358 0211
s.gordon at antarcticanz.govt.nz
Antarctica New Zealand
Private Bag 4745
Adam K. D., Selkirk P. M., Connett M. B., Walsh S. M. (1997) Genetic variation in populations of the moss Bryum argenteum in East Antarctica In: Battaglia B., Valencia J., Walton D. W. H. Antarctic Communities: Species, Structure and Survival 34-38
Bargagli R., Skotnicki M.L., Marri L., Pepi M., Mackenzie A., Agnorelli C. (2004) New record of moss and thermophilic bacteria species and ... physico-chemical properties of geothermal soils on the northwest slope of Mt. Melbourne (Antarctica). Polar Biology 27. 423-431
Bradner J.R., Sidhu R.K., Yee B., Skotnicki M.L., Selkirk P.M., Nevalainen K.M.H. (2000) A new microfungal isolate, Embellisia sp., associated with the Antarctic moss Bryum argenteum Polar Biology 23. 730-732
Dale T.M., Skotnicki M.L., Adam K.D., Selkirk P.M. (1999) Genetic diversity in the moss Hennediella heimii in Miers Valley, southern Victoria Land, Antarctica. Polar Biology 21. 228-233
Frenot Y., Chown S.L., Whinam J., Selkirk M., Convey P., Skotnicki M., Bergstrom D. (2005) Biological invasions in the Antarctic: extent, impacts and implications. Biological Reviews 80. 45-72
Selkirk P.M., Skotnicki M.L., Ninham J.A., Connett M.B., Armstrong J. (1998) Genetic variation and dispersal of Bryum argenteum and Hennediella heimii populations in the Garwood Valley, Southern Victoria Land, Antarctica. Antarctic Science 10(4). 423-430
Selkirk, P.M. Skotnicki, M.L. Adam, K.D. Connett, M.B. Dale, T. Joe, T.W. Armstrong, J. Genetic variation in Antarctic populations of the moss Sarconeurum glaciale. Polar biology 18(5): 344-350, 1997.
Skotnicki M. L., Selkirk P. M., Broady P., Adam K. D., Ninham J. A. (2001) Dispersal of the moss Campylopus pyriformis on geothermal ground near the summits of Mount Erebus and Mount Melbourne, Victoria Land, Antarctica Antarctic Science 13(3). 280-285
Skotnicki M.L., Mackenzie A., Selkirk P.M. (2004) Mosses surviving on the edge: Origins, genetic diversity, and mutation in Antarctica. Molecular Systematics of Bryophytes. Goffinet B., Hollowell V., Magill R Monographs in Systematic Botany from the Missouri Botanical Garden 98. 388-403
Skotnicki M.L., Mackenzie A.M., Clements M.A., Selkirk P.M. (2005) DNA sequencing and genetic diversity of the 18S-26S nuclear ribosomal internal transcribed spacers (ITS) in nine Antarctic moss species Antarctic Science 17(3). 377-384
Skotnicki M.L., Mackenzie A.M., Ninham J.A., Selkirk P.M. (2004) High levels of genetic variability in the moss Ceratodon purpureus from continental Antarctica, subantarctic Heard and Macquarie Islands, and Australasia. Polar Biology Online 1st. 10.1007/s00300-004-0640-2
Skotnicki M.L., Selkirk P.M. (2006) Plant biodiversity in an extreme environment: Genetic studies of origins, diversity and evolution in the Antarctic Bergstrom D.M., Convey P., Huiskes A.H.L. Trends in Antarctic Terrestrial and Limnetic Ecosystems: Antarctica as a Global Indicator 159-173
Skotnicki M.L., Selkirk P.M., Beard C. (1997) RAPD profiling of genetic diversity in two populations of the moss Ceratodon purpureus in Victoria Land, Antarctica Polar Biology 19. 172-176
Skotnicki M.L., Selkirk P.M., Ninham J.A. (1998) RAPD analysis of genetic variation and dispersal of the moss Bryum pseudotriquetrum from Southern Victoria Land, Antarctica. Polar Biology 20. 121-126
Skotnicki M.L., Selkirk P.M., Ninham J.A. (2000) Genetic diversity, colonisation and dispersal of mosses in the Ross Sea Region of Antarctica. Davison W., Howard-Williams C., Broady P. Antarctic Ecosystems: Models for Wider Ecological Understanding 26-32
Skotnicki, M.L. Mackenzie, A.M. Ninham, J.A. Selkirk, P.M. High levels of genetic variability in the moss Ceratodon purpureus from continental Antarctica, subantarctic Heard and Macquarie Islands, and Australasia. Polar biology 27(11): 687-698, 2004.
Skotnicki, M.L. Ninham, J.A. Selkirk, P.M. Genetic diversity and dispersal of the moss Sarconeurum glaciale on Ross Island, East Antarctica. Molecular ecology 8(5): 753-762, 1999.
Skotnicki, M.L. Ninham, J.A. Selkirk, P.M. Genetic diversity, mutagenesis and dispersal of Antarctic mosses - a review of progress with molecular studies. Antarctic science 12: 363-373, 2000.
Skotnicki, M.L. Ninham, J.A. Selkirk, P.M. High levels of RAPD diversity in the moss Bryum argenteum in Australia, New Zealand and Antarctica. The bryologist 101: 412-421, 1998.
Skotnicki, M.L. Selkirk, P.M. Ninham, J.A. RAPD analysis of genetic variation and dispersal of the moss Bryum argenteum in Ross Island and Victoria Land, Antarctica. Polar biology 21: 417-422, 1999.
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