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Norwegian scientist and planktologist
Grethe Berit Rytter Hasle
(3 January 1920 ? 9 November 2013) was a Norwegian
planktologist
. Among the first female professors of natural science at the
University of Oslo
, she specialized in the study of
phytoplankton
.
Personal life
[
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]
Hasle was born in
Borre
as the daughter of shipmaster Johan Kristian Rytter (1890?1966) and his wife Nicoline Olava Nielsen (1885?1976). She married Hans Martin Hasle and took his name; he died in 1971.
[1]
She resided at
Ekeberg
in Norway
[2]
and died in November 2013.
[3]
Career
[
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]
She graduated from
Elverum Teachers' College
in 1942, and graduated from the
University of Oslo
in 1949 where she worked with
Trygve Braarud
.
[4]
In 1950, she published her first paper:
Phototactic vertical migration in marine dinoflagellates
.
[5]
She took the
dr.philos.
degree in 1968 on the thesis
An Analysis of the Phytoplankton of the Pacific Southern Ocean
.
[1]
She was hired as a lecturer at the
University of Oslo
in 1961, and was then a professor of marine botany from 1977 to 1990. She was the third female professor at the Faculty of Mathematics and Natural Sciences, and was inducted into the
Norwegian Academy of Science and Letters
in 1980 as the only female researcher at the time representing the natural sciences. She was also a visiting scholar at the
Texas A&M University
from 1968 to 1969.
[1]
She is especially known for her studies of
phytoplankton
in general, and specifically the
class
Bacillariophyceae
.
[6]
The Bacillariophyceae genus
Haslea
has been named after her. She is also known for revising the morphological
taxonomy
of the genera
Thalassiosira
,
Nitzschia
and
Fragilariopsis
.
[1]
She was honored with a
Festschrift
for her seventieth birthday, and she received the Award of Excellence from the
Phycological Society of America
in 2000 and the Yasumoto Lifetime Achievement Award from the
International Society for the Study of Harmful Algae
in 2003.
[1]
Selected publications
[
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]
- Hasle, Grethe R.;
Fryxell, Greta A.
(1970).
"Diatoms: Cleaning and Mounting for Light and Electron Microscopy"
.
Transactions of the American Microscopical Society
.
89
(4): 469.
doi
:
10.2307/3224555
.
JSTOR
3224555
.
- Rytter Hasle, Grethe (1976-04-01).
"The biogeography of some marine planktonic diatoms"
.
Deep Sea Research and Oceanographic Abstracts
.
23
(4): 319?IN6.
doi
:
10.1016/0011-7471(76)90873-1
.
ISSN
0011-7471
.
- Hasle, G. R.; Lange, C. B.; Syvertsen, E. E. (1996).
"A review ofPseudo-nitzschia, with special reference to the Skagerrak, North Atlantic, and adjacent waters"
.
Helgolander Meeresuntersuchungen
.
50
(2): 131?175.
doi
:
10.1007/BF02367149
.
ISSN
0174-3597
.
S2CID
23937921
.
- Fryxell, Greta A.
; Hasle, Grethe R. (1972).
"Thalassiosira Eccentrica(Ehrenb.) Cleve,T. Symmetricasp. Nov., and Some Related Centric Diatoms1"
.
Journal of Phycology
.
8
(4): 297?317.
doi
:
10.1111/j.1529-8817.1972.tb04044.x
.
S2CID
86683111
.
- Lundholm, Nina; Hasle, Grethe Rytter;
Fryxell, Greta A.
; Hargraves, Paul E. (2002).
"Morphology, phylogeny and taxonomy of species within the Pseudo-nitzschia americana complex (Bacillariophyceae) with descriptions of two new species, Pseudo-nitzschia brasiliana and Pseudo-nitzschia linea"
.
Phycologia
.
41
(5): 480?497.
doi
:
10.2216/i0031-8884-41-5-480.1
.
ISSN
0031-8884
.
S2CID
85308820
.
References
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