| 1. |
- Almered Olsson, Gunilla, 1951, et al.
(författare)
-
Variation in Life History Traits of Gentiana nivalis (Gentianaceae) in Alpine and Sub-alpine Habitats in the Norwegian Mountains – Implications for Biodiversity in relation to Environmental Change
- 2015
-
Ingår i: Annales Botanici Fennici. - : Finnish Zoological and Botanical Publishing Board. - 0003-3847 .- 1797-2442. ; 52:3-4, s. 149-159
-
Tidskriftsartikel (refereegranskat)abstract
- The alpine gentian, Gentiana nivalis, is an obligate annual. Because of its complete population turnover every year, it is likely to be more responsive to environmental shifts than are perennials, and also likely to undergo more rapid genetic change in response to selection pressure. The detected morphological differentiation between habitats was related to different proportions of spring- and autumn-germinating individuals with a larger proportion of winter annuals in the subalpine habitats. The spring-germinating annuals that have shorter time for development and have a shorter stature can still develop at the alpine sites where competition is weaker. The subalpine habitats are all semi-natural, shaped by livestock grazing and human activities related to summer farming. Declining human impact is leading to successional changes in the mountain landscape. The future of G. nivalis in the light of current trends in landscape development and climate change is discussed.
|
|
| 2. |
- Backéus, Ingvar
(författare)
-
Production and depth distribution of fine roots in a boreal open bog
- 1990
-
Ingår i: Annales Botanici Fennici. - 0003-3847 .- 1797-2442. ; 27, s. 261-265
-
Tidskriftsartikel (refereegranskat)abstract
- The production of fine roots in originally root-free ingrowth cores was studied in an ombrotrophic mire ecosystem in central Sweden (14°42'N, 60°10'E). The estimated production values, which should be considered conservative , were 51 g.m-2 in hummocks and 86 g.m-2 in lawns (= upper hollow level). This represents 38% of the total measured production of vascular plants (increment in coarse roots not included) in hummocks and lawns, respectively. In the first year of study more than 50% of the fine root standing crop was found above 10 cm depth. In the second year, which was very dry, the roots penetated significantly deeper.
|
|
| 3. |
- Bakker, Jan P., et al.
(författare)
-
Long-term effects of scrub clearance and litter removal on the re-establishment of dry alvar grassland species
- 2012
-
Ingår i: Annales Botanici Fennici. - 0003-3847 .- 1797-2442. ; 49:1-2, s. 21-30
-
Tidskriftsartikel (refereegranskat)abstract
- Many characteristic dry alvar grassland species disappear after cessation of livestock grazing as a result of encroachment by Juniperus communis. We studied the re-establishment of these species after scrub clearance with and without the removal of the layer of litter and mosses in long-term (14 years) permanent plots. Most of the species belonging to the community species pool of dry alvar grassland species before clearance were found in permanent plots between 2 and 14 years after the clearance. A large part originated from vegetative spread of already occurring species in the established vegetation in the surroundings. Only a small part of the long-term persistent soil seed bank resulted in the re-establishment of alvar species. There was no significant difference in the traits soil seed bank, seed weight and long-distance dispersal by wind, dung or fur of animals of established and non-established species. Removal of litter and mosses positively affected the re-establishment of alvar species.
|
|
| 4. |
- Bergfur, J, et al.
(författare)
-
Phenological changes within a growth season in two semi-natural pastures in southern Sweden
- 2004
-
Ingår i: Annales Botanici Fennici. - 0003-3847 .- 1797-2442. ; 41:1, s. 15-25
-
Tidskriftsartikel (refereegranskat)abstract
- Phenological changes within a growth season were investigated in two grazed, semi-natural grasslands in southern Sweden. On four occasions during the growth season, two independent observers recorded plant frequency and percentage cover. The vegetation data sets were analysed with ordination methods. The temporal changes were highly significant, but accounted for only a small part of the total variation in the data. Most species had early maxima, regarding both cover and frequency. There were differences in temporal pattern between the two grasslands. In a xeric area, the vegetation underwent a major change sometime in August, between survey-visit three and four. In a mesic area, the vegetation changed throughout the study period but least so during August. Therefore, phenological changes can be manifested in different ways, even within the same geographic region. Species-wise ordination scores highlighted those species whose records might be most affected by phenological patterns, information which is valuable when evaluating data collected in Scandinavian grasslands.
|
|
| 5. |
- Ecke, Frauke, et al.
(författare)
-
Succession on a land uplift coast in relation to plant strategy theory
- 2000
-
Ingår i: Annales Botanici Fennici. - 0003-3847 .- 1797-2442. ; 37:3, s. 163-171
-
Tidskriftsartikel (refereegranskat)abstract
- Plant strategies under succession were evaluated for communities on rising seashores of the northern Gulf of Bothnia, Sweden, representing sites of primary succession. The succession could not be explained by Grime's CSR model. Early successional stages were neither characterized by high incidence of ruderals as proposed for secondary successions, nor by the dominance of stress tolerators, as proposed for primary successions. Short-lived species were almost totally absent. Instead, the shore habitat was characterized by species with an ability to tolerate and vegetatively recover from disturbance. The way in which different species experience one and the same form of stress or disturbance is an important reason why the classification on the basis of stress and disturbance seems to be insufficient to explain the course of this succession. Dominants of early and late successional stages differed with respect to root system, breeding system, leaf longevity and growth form (graminioid, herb).
|
|
| 6. |
|
|
| 7. |
- Frisch, Andreas, et al.
(författare)
-
Additions to the calicioid flora of Japan and Korea, with the descriptions of two new species
- 2014
-
Ingår i: Annales Botanici Fennici. - : Finnish Zoological and Botanical Publishing Board. - 0003-3847 .- 1797-2442. ; 51, s. 189-194
-
Tidskriftsartikel (refereegranskat)abstract
- Two new species of calicioid fungi are described, Phaeocalicium triseptatum Tibell and Sphinctrina intermedia Tibell. While P. triseptatum is only known from Hokkaido, Japan, S. intermedia is known from Hokkaido and Korea. Sphinctrina leucopoda as reported from Korea in the literature is misidentified S. intermedia. The genus Microcalicium is reported as new to Japan with one species, M. arenarium. Phaeocalicium flabelliforme is reported as new to Asia (Japan). Chaenothecopsis savonica is reported as new to Japan and Sphinctrina tubaeformis as new to Hokkaido.
|
|
| 8. |
- Frisch, Andreas, et al.
(författare)
-
Herpothallon inopinatum (Arthoniaceae), a new lichen species from Mexico
- 2014
-
Ingår i: Annales Botanici Fennici. - : Finnish Zoological and Botanical Publishing Board. - 0003-3847 .- 1797-2442. ; 51, s. 63-68
-
Tidskriftsartikel (refereegranskat)abstract
- Herpothallon inopinatum Frisch & G. Thor sp. nova (Arthoniaceae) is described from Chiapas, Mexico. It is the second species of Herpothallon known with mature ascospores besides H. fertile. It differs from H. fertile in smaller asci immersed in the thallus instead of strongly protruding barrel-shaped thallus warts, smaller bean-shaped Herpothallon inopinatum most closely resembles H. pustulatum, but differs in the absence of pustules. The closely related H. rubrocinctum has distinct bright-red pseudoisidia and a bright-red pigmentation of pro- and hypothallus, while H. inopinatum lacks pseudoisidia and has a pro- and hypothallus white mottled pale yellow to orange to purplish brown. A revised key to all 34 currently accepted species in Herpothallon is provided.
|
|
| 9. |
- Huttunen, Piritta, et al.
(författare)
-
Leaf trichome production and responses to defoliation and drought in Arabidopsis lyrata (Brassicaceae)
- 2010
-
Ingår i: Annales Botanici Fennici. - Helsinki : Finnish Zoological and Botanical Publishing Board. - 0003-3847 .- 1797-2442. ; 47:3, s. 199-207
-
Tidskriftsartikel (refereegranskat)abstract
- Leaf trichomes can protect plants against herbivory and drought, but can be costly to produce. Theory suggests that selection for reduced costs of resistance may result in the evolution of inducible defences. We quantified variation in tolerance to drought and defoliation, and tested the hypotheses that (a) tolerance is associated with cost, (b) leaf trichome production increases tolerance to drought, and (c) trichome production is increased in response to defoliation and drought stress in Arabidopsis lyrata (Brassicaceae). Eight maternal half-sib families were exposed to two watering regimes and four defoliation treatments in a factorial design. Tolerance to drought varied among families and was inversely related to leaf size, but was not related to trichome density. Family mean performance in the low-watering treatment tended to correlate negatively with that in the control treatment. Trichome production was not induced by defoliation or drought stress. The results suggest that there is genetic variation in tolerance to drought in the study population, that tolerance to drought is associated with a cost, and that trichome production does not increase tolerance to drought in A. lyrata.
|
|
| 10. |
- Johansson, Victor, et al.
(författare)
-
Tree and site quality preferences of six epiphytic lichens growing on oaks in southeastern Sweden
- 2009
-
Ingår i: Annales Botanici Fennici. - Helsinki : Finnish Zoological and Botanical Publishing Board. - 0003-3847 .- 1797-2442. ; 46:6, s. 496-506
-
Tidskriftsartikel (refereegranskat)abstract
- Oaks (Quercus robur) can reach a considerable age, which makes them an important substrate for many epiphytic lichens, including several red-listed species. We studied the importance of tree size and other environmental factors for the occurrence of six epiphytic lichens at two sites, in southeastern Sweden, differing in quality as judged by tree size distribution and number of old trees. The effects of tree circumference, light availability, trunk inclination and site were analysed. Results showed that different lichen species responded differently to these factors, but, overall, tree size was most important for lichen occurrence. Five species showed a positive relation to tree size, but the 50% probability of occurrence was reached at different tree sizes among these species and there were also site differences. This study shows that the maintenance of old trees is crucial for several lichen species, which highlights the importance of long-term management plans.
|
|
| 11. |
|
|
| 12. |
- Lidén, Magnus, 1951-, et al.
(författare)
-
New species of Corydalis (Fumariaceae) from China
- 2008
-
Ingår i: Annales Botanici Fennici. - 0003-3847 .- 1797-2442. ; 45:2, s. 129-132
-
Tidskriftsartikel (refereegranskat)abstract
- Corydalis anthocrene Liden & J. Van De Veire, C. brachyceras Liden & J. Van De Veire and C. helodes Liden & J. Van De Veire are described as new to science and compared with morphologically similar species.
|
|
| 13. |
- Lidén, Magnus, 1951-, et al.
(författare)
-
New taxa of Corydalis (Papaveraceae, Fumarioidae) from Anjaw District, NE India
- 2013
-
Ingår i: Annales Botanici Fennici. - 0003-3847 .- 1797-2442. ; 50:3, s. 172-174
-
Tidskriftsartikel (refereegranskat)abstract
- Corydalis meyori Liden, R. Mili & B. Saikia (sect. Trachycarpae) and C. pterygopetala subsp. macrocarpa Liden, R. Mili & B. Saikia (sect. Davidianae) are described as new to science. Both were collected close to Myanmar (Burma) in East Arunachal Pradesh, an area whose flora is almost unknown.
|
|
| 14. |
- Lidén, Magnus, 1951-, et al.
(författare)
-
Rhodiola sedoides (Crassulaceae), a new species from Arunachal Pradesh, India
- 2016
-
Ingår i: Annales Botanici Fennici. - Helsinki : Finnish Zoological Botanical Publishing Board. - 0003-3847 .- 1797-2442. ; 53:1-2, s. 106-108
-
Tidskriftsartikel (refereegranskat)abstract
- Rhodiola sedoides Lidén & P. Bharali (Crassulaceae), an alpine hermaphroditic spe- cies from NW Arunachal Pradesh, India, is described as new to science and compared with other low-growing, hermaphroditic and narrow-leaved alpine Rhodiola species.
|
|
| 15. |
- Lohtander, Katileena, et al.
(författare)
-
New entities in Physcia aipolia-P-caesia group (Physciaceae, Ascomycetes) : an analysis based on mtSSU, ITS, group I intron and betatubulin sequences
- 2009
-
Ingår i: Annales Botanici Fennici. - 0003-3847 .- 1797-2442. ; 46:1, s. 43-53
-
Tidskriftsartikel (refereegranskat)abstract
- We have revisited the phylogenetic evaluation of the Physcia aipolia-P. caesia lichen group (sect. Caesiae; Physciaceae, Lecanorales) in order to investigate whether new sequence data and extensive sampling can help us to understand the phylogenetic relationships in that group. We combined partial mtSSU DNA data with two previously used nuclear gene regions (betatubulin, ITS) and a group I intron. We also compared the resulting phylogenies with chemical and morphological characters. Altogether 52 specimens of the P. aipolia-P. caesia group were analysed. Direct optimization of the molecular data revealed several well-supported groups. Our results essentially agreed with those of the earlier studies, and we were able to confirm the independent taxonomic status of some controversial morphotaxa. We also discovered at least two distinct clades that potentially represent species new to science. A new nomenclatural combination, Physcia alnophila (Vain.) Loht., Moberg, Myllys & Tehler, is proposed.
|
|
| 16. |
- Mildén, Mikael, et al.
(författare)
-
The distribution of four grassland plant species in relation to landscape history of a Swedish rural area
- 2007
-
Ingår i: Annales Botanici Fennici. - 0003-3847 .- 1797-2442. ; 44:6, s. 416-426
-
Tidskriftsartikel (refereegranskat)abstract
- It is commonly agreed that landscape history is important for species distributions today. Here, we studied present-day regional population distribution and performance of four grassland species, the perennials Ranunculus bulbosus and Succisa pratensis, and the monocarpic "biennials" Carlina vulgaris and Tragopogon pratensis, in a Swedish rural landscape. We analysed the management history of their population patches, using vegetation maps from 1945 and 2001. Distributions of Succisa pratensis reflected the grassland occurrences in 1945 and Tragopogon pratensis was associated with the road network 60 years ago. Performance in different habitats also suggested an impact of land use on species distributions. For Ranunculus bulbosus and Carlina vulgaris the impact of landscape history was less obvious. Our results indicate that present-day distributions of some grassland species partly may be a legacy of previous semi-natural grassland patterns in rural Sweden, an insight that has valuable implications for assessments of long-term vulnerability of grassland species.
|
|
| 17. |
|
|
| 18. |
- Sennikov, Alexander N., et al.
(författare)
-
Atlas Florae Europaeae notes 27. Taxonomy of the Sorbus arranensis group (Rosaceae) in Norway, a hybrid aggregate between S. aria s. lato and S. aucuparia
- 2016
-
Ingår i: Annales Botanici Fennici. - : Finnish Zoological and Botanical Publishing Board. - 0003-3847 .- 1797-2442. ; 53:1-2, s. 1-13
-
Tidskriftsartikel (refereegranskat)abstract
- The Sorbus arranensis group in Norway consists of five species (S. lancifolia, S. neglecta, S. sognensis, S. subarranensis, S. subpinriata), previously confused with S. arranensis from Scotland. These five species are triploid and apomictic, local or narrowly distributed, originating from hybridization between S. aria s. lato and S. aucuparia. In this nomenclatural survey, the names S. sognensis and S. subarranensis are validly published, and lectotypes are designated for S. lancifolia, S. neglecta and S. subpinnata from the collection of T. Hedlund at UPS. The history of studies in this group is briefly outlined, and conditions for valid publication of each name are reviewed. A complete review of associated data (nomenclature, synonymy, descriptions, line drawings, distributions, chromosome counts, conservation status) is compiled.
|
|
| 19. |
- Tibell, Leif
(författare)
-
Morphological variation and ITS phylogeny of Chaenotheca trichialis and C. xyloxena (Coniocybaceae, lichenized ascomycetes)
- 2002
-
Ingår i: Annales Botanici Fennici. - 0003-3847 .- 1797-2442. ; 39:1, s. 73-80
-
Tidskriftsartikel (refereegranskat)abstract
- Chaenotheca trichialis and C. xyloxena have been characterized by differences in their morphology, anatomy and ecology. They are, however, often difficult to distinguish. In a molecular phylogeny based on ITS1-5.8S-ITS2 rDNA sequences the specimens of C. xyloxena but not those of C. trichialis formed a monophyletic group. To some extent the analysis also revealed regional groupings
|
|
| 20. |
- Tyler, Torbjörn
(författare)
-
Citation metrics and Impact Factors fail as measures of scientific quality, in particular in taxonomy, and are biased by biological disciplin and by geographic and taxonomic factors
- 2018
-
Ingår i: Annales Botanici Fennici. - : Finnish Zoological and Botanical Publishing Board. - 0003-3847 .- 1797-2442. ; 55, s. 185-191
-
Tidskriftsartikel (refereegranskat)abstract
- Based on my experience and analyses of citation frequencies of papers published in various biological journals, I discuss the use of citation counts and journal Impact Factors as measures of scientific quality. I conclude that citation frequency differs not only among biological sub-disciplines such as ecology and taxonomy, but also among taxonomic papers on highly similar topics, and that these latter differences largely depend on the organismal group (cryptogams vs. vascular plants and species-rich vs small genera and families) and the geographic region concerned. As a result, journals with a broad biological scope face difficulties in competing in terms of Impact Factors, and thus in competing for the best manuscripts, with journals specialized on particular sub-disciplines that attract many citations. However, since papers on “hot” topics also tend to be short-lived, these differences, at least in part, would be much reduced if citations were counted for longer periods of time or were compensated based on the average age of cited papers in the particular field. In particular in taxonomy, factors such as originality and innovativeness, generally regarded as measures of scientific quality, appear to be inversely correlated with citation frequency. I, therefore, conclude that scientific editors would be able to significantly increase the Impact Factors of taxonomic journals, not by choosing for publication the most scientifically valuable and supreme articles, but by picking manuscripts based the taxonomic position and geographic distribution of the organisms concerned. Still, the author sincerely hopes that no editor will ever take such measures!
|
|
| 21. |
- Wahlman, H, et al.
(författare)
-
Management of semi-natural grassland vegetation : Evaluation of a long-term experiment in southern Sweden
- 2002
-
Ingår i: Annales Botanici Fennici. - 0003-3847 .- 1797-2442. ; 39:2, s. 159-166
-
Tidskriftsartikel (refereegranskat)abstract
- Vascular plants were recorded in a long-term (28-year) experiment on semi-natural grassland vegetation comparing six treatments: continued grazing, mowing every year, mowing every third year, annual spring burning, removal of woody plants, and untreated control. The treatments had created very different vegetation types: the annually mown and grazed plots had the highest species number while the untreated plots had the lowest. The species' ordination scores correlated with Ellenberg indicator values for nutrient status and light: species indicating poor nutrient conditions were mainly in grazed and mown plots, and shade-tolerant species were mainly in untreated and grazed plots. The original aim of this experiment was to evaluate alternative ways of maintaining semi-natural grassland vegetation, but there were no satisfactory long-term alternatives to annual mowing or grazing. An ordination contrasted annual mowing and grazing, ranking species from those associated with mowed plots (e.g. Leucanthemum vulgare, Luzula pilosa, Campanula persicifolia, Ajuga pyramidalis) to those associated with grazed plots (e.g. Ranunculus spp., Geum spp., Vicia sepium).
|
|
| 22. |
|
|
| 23. |
- Wehn, Sölvi, et al.
(författare)
-
The performance of the endemic alpine herb Primula scandinavica in a changing European mountain landscape
- 2015
-
Ingår i: Annales Botanici Fennici. - : Finnish Zoological and Botanical Publishing Board. - 0003-3847 .- 1797-2442. ; 52:3-4, s. 171-180
-
Tidskriftsartikel (refereegranskat)abstract
- This paper reports on the performance of the red-listed Primula scandinavica, endemic to Scandinavia. The study took place in Jotunheimen, Norway. We evaluated occurrence, density and sexual reproduction variables (number of fertile individuals and number of seed capsules). Habitats were registered as land-cover categories (historical and current; broad habitat types) and habitat patch classes (semi-natural and natural; fine-grained habitat types). Spatial overlay analyses and maximum likelihood tests of generalized linear mixed models (GLMMs) were performed to assess the habitat quality of the land-cover categories and the habitat patch classes. In most (96%) of the observed occurrences the species was located at a site that had open vegetation 40 years ago but is now becoming forested or covered by shrubs. The highest densities of P. scandinavica were found in “heathland” and “grassland in transition into woodland”, while the potential for sexual reproduction was highest in “grassland” and lowest in “grassland in transition into woodland”. The results indicate that many of the populations in the study area are remnants and that the habitats of highest quality are semi-natural habitat patches. The changed land use practices in mountain areas have resulted and will result in fewer and smaller populations. However, as also climatic conditions will change it is not straightforward to predict the future performance of P. scandinavica.
|
|
| 24. |
- Arvidsson, Fredrik, et al.
(författare)
-
Geographic location, not forest type, affects the diversity of spider communities sampled with malaise traps in Sweden
- 2016
-
Ingår i: Annales Zoologici Fennici. - : Finnish Zoological and Botanical Publishing Board. - 0003-455X .- 1797-2450 .- 0003-3847. ; 53:3-4, s. 215-227
-
Tidskriftsartikel (refereegranskat)abstract
- The latitudinal diversity gradient predicts higher species richness at lower latitudes. Here, we utilize the data from a long-term monitoring with malaise traps to analyse if spider communities in Sweden are affected by geographic gradients and if these effects hold independent of forest type. The species richness and the effective number of species in spider communities were not significantly related to the latitudinal gradient. The effective number of species and the taxonomic distinctness of spider communities were related to longitude, with a higher number, but fewer related species in western parts of Sweden. The species and family composition were significantly related to latitude independent of forest type, with a dominance of Linyphiidae individuals and species in the north. Our study demonstrates the suitability of malaise trap sampling to contribute to a better understanding of local spider communities, as several rare and locally new species were recorded in this study.
|
|
| 25. |
- Arvidsson, Fredrik, et al.
(författare)
-
Geographic location, not forest type, affects the diversity of spider communities sampled with malaise traps in Sweden
- 2016
-
Ingår i: Annales Zoologici Fennici. - : Finnish Zoological and Botanical Publishing Board. - 0003-455X .- 1797-2450 .- 0003-3847. ; 53:3-4, s. 215-227
-
Tidskriftsartikel (refereegranskat)abstract
- The latitudinal diversity gradient predicts higher species richness at lower latitudes. Here, we utilize the data from a long-term monitoring with malaise traps to analyse if spider communities in Sweden are affected by geographic gradients and if these effects hold independent of forest type. The species richness and the effective number of species in spider communities were not significantly related to the latitudinal gradient. The effective number of species and the taxonomic distinctness of spider communities were related to longitude, with a higher number, but fewer related species in western parts of Sweden. The species and family composition were significantly related to latitude independent of forest type, with a dominance of Linyphiidae individuals and species in the north. Our study demonstrates the suitability of malaise trap sampling to contribute to a better understanding of local spider communities, as several rare and locally new species were recorded in this study.
|
|
| 26. |
- Heidmarsson, S
(författare)
-
Species delimitation in four long-spored species of Dermatocarpon in the Nordic countries
- 1998
-
Ingår i: ANNALES BOTANICI FENNICI. - : FINNISH ZOOLOGICAL BOTANICAL PUBLISHING BOARD. - 0003-3847. ; 35:1, s. 59-70
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A group of four long-spored (> 15 mu m) species of Dermatocarpon Eschw. is revised. Dermatocarpon bachmannii Anders, D. deminuens Vain., D. meiophyllizum Vain., and D. rivulorum (Arnold) Dalla Torre & Sarnth. are recognized. A key to the species is given
|
|
| 27. |
|
|
| 28. |
- Leskinen, E, et al.
(författare)
-
Tabularia waernii (Diatomophyceae) in the northern Baltic Sea
- 1997
-
Ingår i: ANNALES BOTANICI FENNICI. - : FINNISH ZOOLOGICAL BOTANICAL PUBLISHING BOARD. - 0003-3847. ; 34:2, s. 141-147
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Tabularia waernii Snoeijs is a common epiphyte in the Baltic Sea. We have studied its distribution in 313 samples of epiphytic diatoms collected along the SW coast of Finland. T. waernii is abundant in the upper sublittoral of the outer archipelago zone a
|
|
| 29. |
- Schmalholz, Martin, et al.
(författare)
-
Relationship between abundance and fecundity in the endangered grassland annual Euphrasia rostkoviana ssp.fennica
- 2007
-
Ingår i: Annales Botanici Fennici. - 0003-3847. ; 44, s. 194-203
-
Tidskriftsartikel (refereegranskat)abstract
- We examined 18 populations of the endangered Euphrasia rostkoviana ssp. fennica situated in managed semi-natural grasslands or gravelled road verges in ten extant localities in south-eastern Sweden. The major threat to the subspecies is the steady decrease in habitat area and quality. In each population, abundance and fecundity of individuals were examined. Local factors (soil-pH, litter-layer depth and vascular species richness) and isolation were also measured. We specifically wanted to examine if there was a positive relationship between abundance (population size and density) and fecundity in the investigated taxon. LLarger populations of E. rostkoviana ssp. fennica were found to be more dense. Population size and density were both significantly positively related to fecundity. A higher variability in seed production was also detected for individuals in sparse populations. An Allee effect, i.e. a reduced fecundity in small and sparse populations, could thus be demonstrated for the subspecies.
|
|
| 30. |
- Thell, Arne, et al.
(författare)
-
Phylogenetic analysis of ITS and group I intron sequences from European and North American samples of cetrarioid lichens.
- 1998
-
Ingår i: Annales Botanici Fennici. - 0003-3847. ; 35:4, s. 275-286
-
Tidskriftsartikel (refereegranskat)abstract
- Phylogenetic analyses were carried out on 23 samples representing 10 cetrarioid taxa from Europe and North America, representing 10 cetrarioid taxa; they were compared in parsimony analyses. The study is focused on ITS sequences of the ribosomal DNA. Intervening sequences, most likely representing group I introns, were found in four taxa. The results from the phylogenetic analysis are congruent with species delimitations derived from morphological characters, regardless of the geographic origin of the material. ITS and group I intron sequences from populations within the same species usually differ at very few base positions. The inclusion of Cetraria aculeata (Schreb.) Fr. in Cetraria Ach. and the exclusion of Melanelia hepatizon (Ach.) A. Thell, Tuckermannopsis chlorophylla (Willd.) Hale, and the genera Cetrelia W. L. Culb. & C. F. Culb., Flavocetraria Kärnefelt & A. Thell, and Platismatia W. L. Culb. & C. F. Culb. from Cetraria is supported by the analyses, if the genus Vulpicida J.-E. Mattsson and M. J. Lai is maintained in this grouping.
|
|
| 31. |
- Tibell, L
(författare)
-
Phaeocalicium (Mycocaliciaceae, Ascomycetes) in northern Europe
- 1996
-
Ingår i: ANNALES BOTANICI FENNICI. - : FINNISH ZOOLOGICAL BOTANICAL PUBLISHING BOARD. - 0003-3847. ; 33:3, s. 205-221
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The taxonomy, distribution and ecology of eight species of Phaeocalicium A. F. W. Schmidt (Mycocaliciaceae, Ascomycetes) occurring in the Nordic countries and Greenland are described. They are parasitic or saprophytic mainly on thin twigs of trees and shr
|
|
| 32. |
- Tyler, Torbjörn
(författare)
-
Four new species of Hieracium (Asteraceae) from southern Sweden
- 2007
-
Ingår i: Annales Botanici Fennici. - 0003-3847. ; 44:4, s. 315-319
-
Tidskriftsartikel (refereegranskat)abstract
- Three new species belonging to Hieracium sect. Hieracium, viz. H. argentarium, H. irmae and H. mucrodentatum, are described from the Swedish province of Värmland. In addition, H. acidolepis is described anew to accommodate the taxon hitherto known as H. acidotum (Dahlst.) Dahlst., because the type specimen (from Värmland) for that name has been shown to belong to a different species.
|
|
| 33. |
- Tyler, Torbjörn
(författare)
-
Hieracium sublividum (Asteraceae) - more than one species.
- 2007
-
Ingår i: Annales Botanici Fennici. - 0003-3847. ; 44:3, s. 204-212
-
Tidskriftsartikel (refereegranskat)abstract
- The material in Swedish herbaria previously identified as Hieracium sublividum (Dahlst.) Johanss. was revised using both the traditional taxonomical approach and PCA analysis based on 44 morphological characters. Only about half of the specimens did belong to H. sublividum s. stricto (known from the provinces Småland, Öland and Östergötland). Three new species were revealed and are described anew as H. askii T. Tyler (from Småland), H. emblae T. Tyler (from Gotland) and H. hangvarense T. Tyler (from Gotland). The characteristics of all four accepted species are described, illustrated and discussed.
|
|
| 34. |
|
|
| 35. |
- Tyler, Torbjörn
(författare)
-
Lectotypifications of names of Hieracium (Asteraceae) based on material from the Swedish provinces Gastrikland, Halsingland and Medelpad
- 2009
-
Ingår i: Annales Botanici Fennici. - 0003-3847. ; 46:2, s. 107-114
-
Tidskriftsartikel (refereegranskat)abstract
- Lectotypes are designated for 83 names of species of Hieracium sect. Hieracium, H, sect. Vulgata and H. sect. Bifida described by Swedish authors based on material from the provinces Gastrikland, Halsingland and Medelpad of central Sweden. Whenever needed, the affinities and taxonomic value of the lectotypified taxa and the taxonomic implications of the lectotypifications are discussed. One new combination - H. luculentorum T. Tyler nom. et stat. nov. - is proposed to accomplish the taxon previously described as H. chordosum var. luculentum Johanss.
|
|
| 36. |
|
|
| 37. |
- Tyler, Torbjörn
(författare)
-
New species and combinations in Hieracium (Asteraceae) from southern Sweden.
- 2005
-
Ingår i: Annales Botanici Fennici. - 0003-3847. ; 42:5, s. 399-403
-
Tidskriftsartikel (refereegranskat)abstract
- Three new species, i.e. Hieracium cirrobractum T. Tyler, H. helenae T. Tyler and H. praviforme T. Tyler, are described from southern Sweden and two new combinations, i.e. Hieracium limitianeum (Johanss.) T. Tyler and Hieracium oletatum (Johanss. & Sam.) T. Tyler are made.
|
|
| 38. |
- Tyler, Torbjörn
(författare)
-
New species, varieties and combinations of Hieracium from the Swedish provinces Gotland and Ostergotland
- 2004
-
Ingår i: Annales Botanici Fennici. - 0003-3847. ; 41:2, s. 137-141
-
Tidskriftsartikel (refereegranskat)abstract
- Three new species, i.e. Hieracium evae I Tyler, Hieracium jonsbergense T. Tyler, Hieracium subnitidum Dahlst. ex T. Tyler, and one variety, i.e. H. ravidum Brenn. var. exaltifrons T. Tyler var. nov. are described. Hieracium myrtillinum (Johanss. ex Dahlst.) T. Tyler comb. nova is proposed. All are based on material collected in the SE Swedish provinces Gotland and Ostergotland.
|
|
| 39. |
- Tyler, Torbjörn
(författare)
-
On the typification and application of Hieracium diaphanum Fr., with remarks on the diagnostic characters of allied species from southern Sweden
- 2006
-
Ingår i: Annales Botanici Fennici. - 0003-3847. ; 43:5, s. 394-399
-
Tidskriftsartikel (refereegranskat)abstract
- A lectotype for Hieracium diaphanum Fr. (1819) is designated and it is compared with similar species from southern Sweden, i.e. H. pseudodiaphanum (Dahlst.) Johanss., H. jonsbergense T. Tyler, H. hemidiaphanum (Dahlst.) Brenner, H. dalicum Johanss. and H. subglaucovirens Zahn ex Johanss. & Sam. It is concluded that the name H. diaphanum (s. stricto) does belong to a very rare species hitherto only known from two sites in the province of Smaland (S Sweden) whereas the correct name for the most widespread Nordic species of this group is H. pseudodiaphanum (Dahlst.) Johanss.
|
|
| 40. |
- Tyler, Torbjörn
(författare)
-
Reevaluation of the species of Hieracium sect. Hieracium that were described by Hylander from introduced populations in Scandinavian parks
- 2004
-
Ingår i: Annales Botanici Fennici. - 0003-3847. ; 41:2, s. 103-131
-
Tidskriftsartikel (refereegranskat)abstract
- Hylander treated 144 species of Hieracium sect. Hieracium found in Scandinavian parks, 132 of which were described for the first time. However, he did not supply any determination key, only a few species were illustrated and hints about the differences between species were few. In addition, the species concept of Hylander was obviously much narrower than what has been agreed upon by those working with native Scandinavian species of this group. The species treated have all been introduced to northern Europe, presumably from Southern Germany or France, during the latter half of the 19th century as contamination of commercial grass-seed, but the majority of the species is still not known from any native occurrences. In the present paper, all these "park-Hieracia" are described in a standardized manner, and illustrations as well as a determination key to all species are provided. The types are indicated for all species and six taxa are lectotypified. The number of species have been reduced to 95 by merging those species that were found to be identical Or unacceptably closely similar. A way of constructing a numerical description taking into consideration 33 different characters is described. The numerical description was used to calculate an overall similarity index for all pairs of species and thereby identify synonymous names. In addition, the numerical description was found to be of great help when constructing the determination key.
|
|
| 41. |
- Tyler, Torbjörn
(författare)
-
Typification of Hieracium stenolepis Lindeb.
- 2006
-
Ingår i: Annales Botanici Fennici. - 0003-3847. ; 43:6, s. 475-477
-
Tidskriftsartikel (refereegranskat)abstract
- The original material of Hieracium stenolepis Lindeb. is analyzed and a lectotype (GB) is designated.
|
|
| 42. |
- Tyler, Torbjörn, et al.
(författare)
-
Typification of species of Hieracium s. stricto described by Norrlin from central Scandinavia
- 2015
-
Ingår i: Annales Botanici Fennici. - 0003-3847. ; 52:1-2, s. 46-52
-
Tidskriftsartikel (refereegranskat)abstract
- Twenty-six names of taxa of Hieracium sections Hieracium, Bifida and Vulgata (Asteraceae) described by the Finnish author J.P. Norrlin based on material from central Sweden and adjacent Norway and originally published in 1888 are lectotypified, and their applications are discussed. The replacement name H. cognatum T. Tyler & Sennikov is proposed as a substitute for the illegitimate H. propinquum (Norrl. ex Hamb.) Johanss., non Sudre.
|
|
