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- Bostedt, Göran, 1966-, et al.
(författare)
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The value of forests for tourism in Sweden
- 1995
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Ingår i: Annals of Tourism Research. - : Elsevier. - 0160-7383 .- 1873-7722. ; 22:3, s. 671-680
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Tidskriftsartikel (refereegranskat)abstract
- Sweden has a vast quantity of forests and the Right of Common Access allows tourists to freely enter any forest no matter who owns it. An economic valuation study was carried out in two tourism areas, one in the southern part of the country and one in the northern part. It was shown that a considerable portion of the value to tourists is attributable to forest characteristics. Furthermore, the results suggest that this value can be increased by modifying forest management practices; for example, by making clearcuts smaller, even if there were more of them, and by increasing the proportion of broad leaved trees in forest stands.
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| 4. |
- Heidmarsson, Starri, et al.
(författare)
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Classification of lichen photomorphs
- 1997
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Ingår i: Taxon. - : Wiley. - 0040-0262 .- 1996-8175. ; :46, s. 519-520
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Tidskriftsartikel (refereegranskat)
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| 5. |
- Herrmann, Björn, et al.
(författare)
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Differentiation of Chlamydia spp by sequence determination and restriction endonuclease cleavage of RNase P RNA genes
- 1996
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Ingår i: Journal of Clinical Microbiology. - 0095-1137 .- 1098-660X. ; 34:8, s. 1897-1902
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Tidskriftsartikel (refereegranskat)abstract
- The amplification of DNA from Chlamydia trachomatis by PCR with degenerated primers yielded a 345-bp fragment of the putative RNase P RNA gene. From the deduced DNA sequence of this gene in C. trachomatis, a modified primer pair was designed. The primer pair was subsequently used to obtain the corresponding gene products from Chlamydia pneumoniae and Chlamydia psittaci. Sequence comparisons revealed similarities of 76.6% between C. trachomatis and C. pneumoniae, 79.5% between C. trachomatis and C. psittaci, and 84.7% between C. pneumoniae and C. psittaci. Furthermore, the three species were differentiated by fragment length polymorphism analysis after restriction enzyme cleavage of the PCR products. Sequence variations among 14 serotypes of C. trachomatis were confined to one purine base substitution in the putative RNase P RNA gene of lymphogranuloma venereum strains L1 to L3. Complete sequence similarity was found for nine strains of C. pneumoniae of different geographic origins. Taken together, our results indicate a possibility of the general application of this method in clinical bacteriology. Analysis of the secondary structures of the putative RNase P RNA genes from the different Chlamydia species suggested that a novel structural element in the domain of RNase P RNA is involved in base pairing with the 3'-terminal CCA motif of a tRNA precursor. This structure has not previously been found among RNase P RNAs of members of the division Bacteria.
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