Heinrichs Leonhards Skuja (Latvian: Heinrihs Skuja; 8 September 1892 – 19 July 1972) was a Latvian phycologist active in the 20th century. He is considered an outstanding phycologist and protistologist of his time. Skuja was actively involved in the study of Latvian algae beginning in 1924. After escaping to Sweden in 1944 near the end of World War II, he continued researching algal systematics and ecology in Uppsala. He received several academic awards from both countries for his contributions to phycology. Due to his extensive knowledge of algae, he received samples from scientific expeditions around the world to be identified by him. He described thousands of new taxa and published over 70 papers and monographs that were accompanied by his own scientific illustrations. In his private life, he invested time in art and music, and was well-regarded by his friends and colleagues.
Biography
Early years Heinrichs Leonhards Skuja was born on 8 September 1892 in Majori, Jūrmala, near Riga in Latvia, into a family of carpenters. During his youth, he lived close to the coast and developed an early interest in travel and nature, particularly aquatic plants and animals. His first schooling was at a charity school. After graduating, he spent a year traveling by sailboat across the seas, including long trips in the West Indies and along the North American coast. These travels intensified his interest in aquatic life. He returned to Latvia in 1910, where he attended evening classes at a secondary school in Riga. He finished school in 1912 and went on a long trip by foot, traveling through parts of Sweden, the Netherlands, and Germany. When the First World War began, his family moved to Baku, in the Caucasus region, where he served as a draftsman and engaged in floristic studies on the Apsheron Peninsula. He returned to Latvia in 1920 and was drafted into the army, where he was a draftsman in the technical department of the Army Commander-in-Chief's Headquarters until 1922, when he was demobilized.
Academic life in Latvia In the early 1920s, Skuja was appointed a lecturer in biology at Riga People's High School (Rīgas Tautas augstskola). In 1922 he began his academic studies by attending lectures at the Faculty of Mathematics and Natural Sciences of the University of Latvia (LU), first as an auditor, then from 1923 as an enrolled student. He was primarily interested in taxonomic and phylogenetic problems, and he soon chose algae as his favorite research topic. In a competition for student research papers, Skuja won first prize for his paper Mērsraga–Ragaciema piekrastes aļģu flora (English: Algal flora of the Mērsrags–Ragaciems Coast). By decision of the LU Dean Council, he was enrolled as a student in the Department of Natural Sciences. During his studies in the department, he worked as a teaching assistant and continued researching Latvian freshwater algae. After some minor papers, Skuja published his first major study, Beitrag zur Algenflora des Rigaschen Meerbusens (English: Contribution to the algal flora of the Gulf of Riga), in 1924. He graduated in 1929 and was conferred his mag. rer. nat. degree (equivalent to a master's degree). For his phycological research, he received the Culture Fund Award the same year, and the K. Barons Award in 1931. After graduation, Skuja worked as a senior lecturer. From 1929 until 1932 he taught at the Institute of Plant Systematics in Riga. Between 1933 and 1939, as a private lecturer, he taught cryptogamy and protistology, as well as a course on symbiosis in protists. From 1940 onwards, in Nazi-occupied Latvia, he taught a botany course to pharmacology and veterinary students. On 14 October 1943, Skuja defended his doctoral thesis Pētījumi par Ķīnas, sevišķi tās dienvidrietumu daļas, aļģu floru un veģetāciju (English: Studies on the algal flora and vegetation of China, especially its southwestern part) and obtained the degree of dr. rer. nat. (equivalent to a PhD).
Continued life in Sweden Before the end of the Second World War and the Soviet re-occupation of Latvia, Skuja crossed to the coast of Sweden in a small boat in autumn of 1944. He was soon able to focus entirely on phycological research. He joined Uppsala University as an associate professor in botany from 1947 until his retirement in 1961. In 1958 he received the degree of doctor honoris causa, and in 1961 he was awarded the Björkén Prize for his outstanding achievements in freshwater phycology. Back in Latvia, Skuja's student Antonija Kumsāre continued algal research in the post-war period, and was later joined by Maija Balode, Ivars Druvietis and others.
During his years in Uppsala, Skuja remained engaged in intensive research on freshwater algae, resulting in comprehensive papers illustrated with his own drawings. He published not only taxonomic and floristic records, but also discussions on phylogenetic relationships and the ecology of freshwater algae. By the early 1970s, he had already produced more than 70 papers, and he disseminated his extensive algal knowledge through annual general and specialized courses, which attracted large numbers of students. He still divided his time between laboratory work and field observations, and set aside a portion of each day for work at the Institute of Systematic Botany at Uppsala. In 1958, he founded the Algological Society of Uppsala. Even in Sweden, Skuja always felt close to his home country and to the University of Latvia. In 1961, while congratulating a Swedish student fraternity, he spoke about a distant calling of unceasing and constant spiritual growth, which he referred to as "the future of our entire nation, our native land, our Latvia, through which and only through which we can walk our path to a true, enlightened life, to understanding humanity." In 1970, Skuja suffered a stroke from which he did not recover. He died on 19 July 1972, in Uppsala.
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