Tagea Kristina Simon Björnberg, a Brazilian marine biologist and Guggenheim Fellow who specialized in plankton and copepods, passed away before June 26, 2023. Born in São Vicente in 1925, her scientific career included work at the University of São Paulo, leaving an enduring legacy in marine taxonomy.
Early Literary Inspiration and Scientific Roots
Long before naming new crustacean species, an eleven-year-old Björnberg wrote to children’s writer Monteiro Lobato with a creative proposition. She suggested he introduce a new character into his books, prompting Lobato to insert her into the Sítio do Picapau Amarelo series as Björnberg de Coqueiros, according to University of São Paulo records.
That early curiosity naturally evolved into a dedicated pursuit of the natural sciences. Björnberg studied biology at the University of São Paulo, where she earned her licenciado in 1948. She initially served as an assistant professor of zoology at the University of Paraná between 1952 and 1954 before returning to her alma mater.
Decades of Plankton Research at USP
Upon her return to São Paulo, Björnberg joined the Oceanographic Institute (IO-USP) as a planktonologist. She earned her PhD from the university in 1957 and assumed the role of chief oceanographer at IO-USP by 1960. Her taxonomic studies centered primarily on copepods and plankton.
Her contributions soon drew international recognition. She secured a research grant from the Dutch government in 1963, alongside support from the São Paulo Research Foundation during the 1963–1964 period. In 1967, she was awarded a Guggenheim Fellowship dedicated to the systematics of copepods.
| Year / Period | Milestone / Role | Institution |
|---|---|---|
| 1948 | Obtained Licenciado in Biology | University of São Paulo |
| 1952–1954 | Assistant Professor of Zoology | University of Paraná |
| 1957 | Completed PhD | University of São Paulo |
| 1960 | Chief Oceanographer | Oceanographic Institute, USP |
| 1967 | Awarded Guggenheim Fellowship | Guggenheim Foundation |
| 2014 | Published description of three new Harpacticoida genera | Nauplius Journal |
Lifelong Taxonomy and Later Contributions
In 1966, Björnberg stepped down as chief oceanographer to serve as an assistant professor of zoology at the Faculty of Philosophy, Languages and Human Sciences, University of São Paulo, eventually retiring from USP. Retirement, however, did not halt her scientific output. She continued identifying and naming species well into her late eighties, publishing an article in 2014 that introduced three new benthonic Harpacticoida genera from the São Sebastião Channel.
The scientific community honored her taxonomy by naming crustacean species after her, including Oithona bjornbergae and Noodtorthopsyllus tageae. Even into her nineties, she remained active at the CEBIMar in São Sebastião, where she worked as late as March 2021. Her death was announced on June 26, 2023.
