Carl H. Lindroth
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Carl Hildebrand Lindroth (8 September 1905 – 23 February 1979) was a Swedish
entomologist Entomology (from Ancient Greek ἔντομον (''éntomon''), meaning "insect", and -logy from λόγος (''lógos''), meaning "study") is the branch of zoology that focuses on insects. Those who study entomology are known as entomologists. In ...
and a professor at
Lund University Lund University () is a Public university, public research university in Sweden and one of Northern Europe's oldest universities. The university is located in the city of Lund in the Swedish province of Scania. The university was officially foun ...
. He was a specialist in carabidology (the study of
ground beetles Ground beetles are a large, cosmopolitan family of beetles, the Carabidae, with more than 40,000 species worldwide, around 2,000 of which are found in North America and 2,700 in Europe. As of 2015, it is one of the 10 most species-rich animal fa ...
), with a special interest in
biogeography Biogeography is the study of the species distribution, distribution of species and ecosystems in geography, geographic space and through evolutionary history of life, geological time. Organisms and biological community (ecology), communities o ...
. He was a strong proponent of the
glacial refugium A glacial refugium (plural glacial refugia) is a geographic region which made possible the survival of flora and fauna during ice ages and allowed for post-glacial re-colonization. Different types of glacial refugia can be distinguished, namely nuna ...
hypothesis and made use of the framework to explain the distribution patterns of Scandinavian beetles.


Life and work

Lindroth was born on 8 September 1905 in
Lund Lund (, ;"Lund"
(US) and
) is a city in the provinces of Sweden, province of Scania, southern Swed ...
, Sweden, to Professor Hjalmar Lindroth and Stina Hildebrand. His brother Arne became an
ecologist Ecology () is the natural science of the relationships among living organisms and their environment. Ecology considers organisms at the individual, population, community, ecosystem, and biosphere levels. Ecology overlaps with the closely re ...
while brother
Sten The STEN (or Sten gun) is a British submachine gun chambered in 9×19mm which was used extensively by British and Commonwealth forces throughout World War II and during the Korean War. The Sten paired a simple design with a low production co ...
became a historian. The Lund home on Magnus Stenbock Street was close to the noted
Cathedral School Cathedral schools began in the Early Middle Ages as centers of advanced education, some of them ultimately evolving into medieval universities. Throughout the Middle Ages and beyond, they were complemented by the monastic schools. Some of these ...
. The family moved to
Gothenburg Gothenburg ( ; ) is the List of urban areas in Sweden by population, second-largest city in Sweden, after the capital Stockholm, and the fifth-largest in the Nordic countries. Situated by the Kattegat on the west coast of Sweden, it is the gub ...
where he went to school, and graduated from Göteborgs Högre Latinläroverk in 1923. His natural history interests were developed at the Gothenburg natural history museum and he was influenced by A. L. Jägerskiöld and Emil Sandin. He moved to
Stockholm University Stockholm University (SU) () is a public university, public research university in Stockholm, Sweden, founded as a college in 1878, with university status since 1960. With over 33,000 students at four different faculties: law, humanities, social ...
for his undergraduate studies in 1923, and in 1926 he enrolled at
Uppsala University Uppsala University (UU) () is a public university, public research university in Uppsala, Sweden. Founded in 1477, it is the List of universities in Sweden, oldest university in Sweden and the Nordic countries still in operation. Initially fou ...
to continue his graduate studies. Uppsala University was known for work in biogeography, especially for the work of Sven Ekman. Lindroth's dissertation from 1931 was titled ''Die Insektenfauna Islands und ihre Probleme'' ("The insect fauna of Iceland and its problems"), in which he examined the insect fauna of Iceland and the biogeographical puzzles they posed. He became a professor of entomology at Lund University in 1951 and gained a reputation for his lectures and as a teacher. He continued to work extensively on the
Carabidae Ground beetles are a large, cosmopolitan family of beetles, the Carabidae, with more than 40,000 species worldwide, around 2,000 of which are found in North America and 2,700 in Europe. As of 2015, it is one of the 10 most species-rich animal ...
ground beetle and examined its distribution in the light of past climatic changes.


Research

Lindroth examined wing polymorphisms in ground beetles and supported the view that wingless or brachypterous forms tended to be in greater number within the centres of origin of a species, while areas with a preponderance of winged forms tended to be areas that were recently colonized. He also examined the distribution of ground beetles across the North Atlantic and found that the distribution of more than 40 species of North American beetle could not be accounted for except by inadvertent transport by humans from Europe. According to Lindroth, many of the species may have been transferred in
ship ballast Ballast is weight placed low in ships to lower their centre of gravity, which increases stability (more technically, to provide a righting moment to resist any heeling moment on the hull). Insufficiently ballasted boats tend to tip or heel exce ...
prior to World War I, with
Newfoundland Newfoundland and Labrador is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of . As of 2025 the population ...
being the earliest region for establishment of many species. Lindroth also examined cuticular microsculpture patterns on the
elytra An elytron (; ; : elytra, ) is a modified, hardened forewing of beetles (Coleoptera), though a few of the true bugs (Hemiptera) such as the family Schizopteridae are extremely similar; in true bugs, the forewings are called hemelytra (sometime ...
of beetles and introduced their use, especially for the identification of fossil species.


Other activities

Lindroth was a member of the
Royal Swedish Academy of Sciences The Royal Swedish Academy of Sciences () is one of the Swedish Royal Academies, royal academies of Sweden. Founded on 2 June 1739, it is an independent, non-governmental scientific organization that takes special responsibility for promoting nat ...
from 1964 and was well known for his popular science lectures, appearing on the television program ''
Fråga Lund ''Fråga Lund'' ( English: ''"Ask Lund"''; Lund being a well-known Swedish university town) is a Swedish television format where professors and other academics sits in a panel, in front of an audience, answering scientific questions. The first sh ...
''. He wrote a book for children, ''Myran Emma'', in 1948, which was made into a short animated film by Jaromir Wesely in 1989. The book follows the life of a red wood ant called Emma, from egg to adulthood.


Personal life

Lindroth married Gun Bodman in 1931. After her death in 1972, he married the textile artist Marianne Richter in 1974. He died on 23 February 1979 and is buried at the cemetery of Norra kyrkogården in Lund. In 2007, the Society for Applied Carabidology instituted the Carl H. Lindroth Prize to honor the work of present-day carabidologists.


References


External links


''Ground beetles (Carabidae) of Fennoscandia : a zoogeographic study'' (1992)

Lindroth, Carl H. (1974). Handbooks for the Identification of British Insects. Volume IV. Part 2. Coleoptera. Carabidae. Royal Entomological Society of London.
{{DEFAULTSORT:Lindroth, Carl H. 1905 births 1979 deaths Swedish entomologists Members of the Royal Swedish Academy of Sciences Coleopterists Stockholm University alumni Uppsala University alumni Academic staff of Lund University 20th-century Swedish zoologists