Grethe Rytter Hasle

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Grethe Rytter Hasle
Born (1920-01-03)3 January 1920
Horten
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Citizenship Norwegian
Fields planktology
Institutions University of Oslo
lecturer 1961–1977
professor 1977–1990
Alma mater University of Oslo
Academic advisors Trygve Braarud
Author abbrev. (botany) Hasle

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

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, Akershus[2] and died in November 2013.[3]

Career

She graduated from Elverum Teachers' College in 1942, and graduated from the University of Oslo in 1949. Her first publication was Phototactic vertical migration in marine dinoflagellates. 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.[4] 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]

References

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