Grethe Rytter Hasle
Encyclopedia
Grethe Berit Rytter Hasle (born 3 January 1920) is a Norwegian planktologist
. Among the first female professors of natural science at the University of Oslo
, she specialized in the study of phytoplankton
.
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.
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.
She had been 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. She is especially known for her studies of phytoplankton
in general, and specifically the class
Bacillariophyceae. The Bacillariophyceae genus Haslea has been named after her. She is also known for revising the morphological taxonomy
of the geni Thalassiosira, Nitzschia
and Fragilariopsis.
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.
She resides in Bekkestua
.
Planktology
Planktology is the study of plankton, various microorganisms that inhabit bodies of water. The field encompasses a variety of topics, including primary production, and energy flow. The carbon cycle is a recent area of interest....
. Among the first female professors of natural science at the University of Oslo
University of Oslo
The University of Oslo , formerly The Royal Frederick University , is the oldest and largest university in Norway, situated in the Norwegian capital of Oslo. The university was founded in 1811 and was modelled after the recently established University of Berlin...
, she specialized in the study of phytoplankton
Phytoplankton
Phytoplankton are the autotrophic component of the plankton community. The name comes from the Greek words φυτόν , meaning "plant", and πλαγκτός , meaning "wanderer" or "drifter". Most phytoplankton are too small to be individually seen with the unaided eye...
.
Personal life
She was born in BorreBorre, Norway
Borre is a village in the municipality of Horten, Vestfold county, Norway. The village of Borre had provided the name of the former Borre municipality .-History:...
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.
Career
She graduated from the teacher's college in ElverumElverum
is a town and municipality in Hedmark county, Norway. It is part of the traditional region of Østerdalen. The administrative centre of the municipality is the town of Elverum...
in 1942, and graduated from the University of Oslo
University of Oslo
The University of Oslo , formerly The Royal Frederick University , is the oldest and largest university in Norway, situated in the Norwegian capital of Oslo. The university was founded in 1811 and was modelled after the recently established University of Berlin...
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.
University of Oslo
The University of Oslo , formerly The Royal Frederick University , is the oldest and largest university in Norway, situated in the Norwegian capital of Oslo. The university was founded in 1811 and was modelled after the recently established University of Berlin...
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
Norwegian Academy of Science and Letters
The Norwegian Academy of Science and Letters is a learned society based in Oslo, Norway.-History:The University of Oslo was established in 1811. The idea of a learned society in Christiania surfaced for the first time in 1841. The city of Throndhjem had no university, but had a learned...
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
Texas A&M University
Texas A&M University is a coeducational public research university located in College Station, Texas . It is the flagship institution of the Texas A&M University System. The sixth-largest university in the United States, A&M's enrollment for Fall 2011 was over 50,000 for the first time in school...
from 1968 to 1969. She is especially known for her studies of phytoplankton
Phytoplankton
Phytoplankton are the autotrophic component of the plankton community. The name comes from the Greek words φυτόν , meaning "plant", and πλαγκτός , meaning "wanderer" or "drifter". Most phytoplankton are too small to be individually seen with the unaided eye...
in general, and specifically the class
Class (biology)
In biological classification, class is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, order, family, genus, and species, with class fitting between phylum and order...
Bacillariophyceae. The Bacillariophyceae genus Haslea has been named after her. She is also known for revising the morphological taxonomy
Taxonomy
Taxonomy is the science of identifying and naming species, and arranging them into a classification. The field of taxonomy, sometimes referred to as "biological taxonomy", revolves around the description and use of taxonomic units, known as taxa...
of the geni Thalassiosira, Nitzschia
Nitzschia
Nitzschia is a common pennate marine diatom. In the scientific literature this genus is sometimes termed Nitzchia, this taxon has many species described, which all have a similar morphology.-Occurrence:...
and Fragilariopsis.
She was honored with a Festschrift
Festschrift
In academia, a Festschrift , is a book honoring a respected person, especially an academic, and presented during his or her lifetime. The term, borrowed from German, could be translated as celebration publication or celebratory writing...
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.
She resides in Bekkestua
Bekkestua
Bekkestua is a town in the municipality of Bærum, Norway, with a busy bus terminal and a station on one of Oslo's westbound T-bane lines, Kolsåsbanen. It also has its own library, McDonalds, police station and fire station...
.