| UPPSALA UNIVERSITET: Institutionen
för geovetenskaper: Paleobiologi:
Personal |
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Paleobiologi
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Personal
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SWEAT-shop
2008
(Swedish
Workshop
on
Ediacaran
Acritarch
Taxonomy) |
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Research
interests
Micropalaeontology deals with the studies of morphology, systematics,
distribution in
time and space, and evolution of unicellular organisms, as represented
in the fossil records. Neoproterozoic and Cambrian prokaryotes
(bacteria) and protoctists (acritarchs) are investigated to elucidate
their palaeobiology, origins and biochronology as a tool to increase
our understanding of the early evolution of life and to solve certain
biological and geological problems. The origin and history of life on
Earth are the basis for search for life in the Universe and the
science of astrobiology.
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Current
research projects:
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Global
biodiversity trends of the terminal Proterozoic-Cambrian prokaryotes
and protoctists (unicellular eukaryotes) in the context of secular
biotic evolution and environmental changes.
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The role of
phytosynthetic microbiota (acritarchs and cyanobacteria) in the
development of oxygenic environments and its impact on marine trophic
web and the process of early metazoan
diversification.
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Search for
biological affinities and phylogentic relationships of the Proterozoic
and Cambrian acritarchs by
phenetic morphological, ultrastructural and geochemical studies. Joint
with PhD project by Heda Agić.
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Radiations,
palaeobiology and biochronology of the Ediacaran acritarchs in
Australia and Siberia and the survival/recovery strategies of early
phytoplankton
in the post-glacial Earth conditions (Slush-ball Earth). Collaboration
with Dr. Kathleen Grey, Geological Survey of
Western Australia, Perth, and Konstantin E. Nagovitsin, Novosibirsk.
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Palaeobiology and
biostratigraphy of acritarchs from the Proterozoic-Cambrian successions
in China. Collaboration with Prof. Yin Leiming, Chinese Academy of
Sciences, Nanjing.
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Cambrian
biostratigraphy with the aim of establishing Global Stratotype Section
and Point for Stages and Series of the Cambrian System, as a part of
the long term collaboration with the International Subcommission on
Cambrian Stratigraphy (Vice-Chairperson 2003-2011), Cambrian Stage
Subdivision Working Group.
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Ultrastructure and biogeochemistry of the
organically preserved Ediacaran meazoan Sabellidites. Collaboration
with Frances Westall and Frédéric Foucher, Centre de
Biophysique
Moléculaiure CNRS, Orléans, France.
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I.U.G.S., IGCP
Project 493: Rise and Fall of Ediacaran Biota.
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I.U.G.S., IGCP
Project 512: Neoproterozoic Ice Ages.
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Early Cambrian
acritarch Skiagia scottica
from Greenland.

Ediacaran
acritarch Appendisphaera grandis
from Siberia
Ediacaran soft-bodied metazoan Sabellidites

Ediacaran
cyanobacterium Palaeolyngbya
from Poland
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Links
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Photo-gallery from recent
fieldwork
[click
picture
to
enlarge]
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The
Grand
Canyon
of
the
Colorado
River.
Cambrian Working Group, 2011. |
The
lower-middle
Cambrian
boundary
interval
in
Nevada.
Cambrian
Working
Group,
2011. |
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Death
Valley,
California.
Cambrian Working Group, 2011. |
Death
Valley,
California,
Zabriskie
Point.
Cambrian Working Group, 2011. |
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Death
Valley,
California,
Bad
Water.
Cambrian Working Group, 2011. |
Death
Valley,
California,
Bad
Water,
bacterial
mats.
Cambrian Working Group, 2011. |
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| Camping
on
Digermul
Peninsula,
northern
Norway. |
Fieldwork
on
Digermul
Peninsula,
northern
Norway. |
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© 2003-2011 UPPSALA
UNIVERSITET, Paleobiologi, SE 752 36 Uppsala
Webmaster
Uppdaterad: 2011-12-06 |