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Search: swepub > Other academic/artistic > Södertörn University > Journal article > (2005-2009) > Lättman Håkan

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  • Arup, Ulf, et al. (author)
  • Professor Ingvar Kärnfelt - a birthday tribute
  • 2009
  • In: The Lichenologist. - Cambridge : Cambridge University Press. - 0024-2829 .- 1096-1135. ; 41:5, s. 453-456
  • Journal article (other academic/artistic)abstract
    • On 19 July 2009 Ingvar Kärnefelt celebrated his 65th birthday. This could have meant that we, his former students, would be celebrating him in his retirement from his position as head of the Biological Museums at Lund University. We are grateful that this is not the case, as Ingvar will carry on, probably for at least one or two more years. Instead, we celebrate Ingvar because he is the main reason for all of us having studied lichenology in Lund. This special issue of The Lichenologist is dedicated to him as a birthday tribute in honour of his long and fruitful lichenological career. The main authors of all the papers in this issue are former students of Ingvar. For several of us he has not only acted as supervisor but later also as the director of the Botanical Museum where we meet him in our daily work.
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2.
  • Lättman, Håkan, et al. (author)
  • Generation time estimated to be 25-30 years in Cliostomum cossugatum (Ach.) Fr.
  • 2009
  • In: The Lichenologist. - : Britich Lichen Society. - 0024-2829 .- 1096-1135. ; 41:5, s. 557-559
  • Journal article (other academic/artistic)abstract
    • Knowledge of spore to spore generation time is extremely important for several reasons. As it is the shortest generation time, it indicates the maximum nucleotide substitution rate over time and provides a rate limit for the evolution of a species. In population genetics most calculations involving time use ‘generations’ as the unit of measurement and in order to convert these ‘generations’ into ‘years’, knowledge of generation time is needed but rarely available. Knowledge of generation time may also be essential for conservation purposes and assessments of migration history. This knowledge also makes it possible to estimate both the age of a population and also to determine to what extent a population represents the genetic diversity of a species (Rosenberg & Nordborg 2002). In this paper we present a method for assessing generation length for lichens using Cliostomum corrugatum (Ach.) Fr. as an example. This lichen was selected for investigation because it is restricted to forests with long temporal continuity (Lättman et al. 2009) and information on generation time is essential to estimate the rate of dispersal at the landscape level.
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Mattsson, Jan-Eric (2)
Lättman, Håkan (2)Undo refine
Hedlund, Johanna (1)
Thell, Arne (1)
Olsson, Niklas (1)
Westberg, Martin (1)
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Knutsson, Tommy (1)
Arup, Ulf (1)
Frödén, Patrik (1)
Lindblom, Louise (1)
Fröberg, Lars (1)
Ekman, Stefan, 1965- (1)
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Year
2009 (2)

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