ISSN 0003-3847
© Finnish Zoological and Botanical Publishing Board 2002

Contents of Volume 39 Number 1, 2002

Carrión, J. S. & Navarro, C. 2002: Cryptogam spores and other non-pollen microfossils as sources of palaeoecological information: case-studies from Spain. — Ann. Bot. Fennici 39: 1–14.
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Del-Arco, M., Salas, M., Acebes, J. R., Marrero, M. C., Reyes-Betancort, J. A. & Pérez-de-Paz, P. L. 2002: Bioclimatology and climatophilous vegetation of Gran Canaria (Canary Islands). — Ann. Bot. Fennici 39: 15–41.
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Duran, A. & Duman, H. 2002: Two new species of Centaurea (Asteraceae) from Turkey. — Ann. Bot. Fennici 38: 43–48.
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Jutila, H. M. 2002: Seed banks of river delta meadows on the west coast of Finland. — Ann. Bot. Fennici 39: 49–61.
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Margonska, H. B. 2002: A new species of Crepidium (Orchidaceae, Malaxidinae) from Sabah, Borneo. — Ann. Bot. Fennici 39: 63–66.
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Romo, A., Stübing, G. & Peris, J. B. 2002: Plantago benisnassenii (Plantaginaceae), a new species from Morocco. — Ann. Bot. Fennici 39: 67–71.
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Tibell, L. 2002: Morphological variation and ITS phylogeny of Chaenotheca trichialis and C. xyloxena (Coniocybaceae, lichenized ascomycetes). — Ann. Bot. Fennici 39: 73–80.
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Nomenclatural novelties in Ann. Bot. Fennici 39(1): 84.
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Carrión, J. S. & Navarro, C. 2002: Cryptogam spores and other non-pollen microfossils as sources of palaeoecological information: case-studies from Spain. — Ann. Bot. Fennici 39: 1–14.

Four examples from Mediterranean Spain are used to show that records of non-pollen palynomorphs (algal and fungal spores and cysts, charophytes and other microfossils of unknown biological origin) are worthwhile in addition to pollen analysis for studies of palaeoecological reconstruction. In the lacustrine sequence of Cañada de la Cruz, the stratigraphy of palaeolimnological indicators is compatible with climatic control of vegetation stages at the response scales of decades to centuries. The sequence of Navarrés provides evidence of millennial-scale change in the trophic conditions of a peat-forming basin, which parallels local and vegetation changes since the last glacial to the Holocene under the influence of fire events, climate change and human activity. The sequence of Villaverde shows out-of-phase relationships of vegetational and limnological developments. The sequence of San Rafael offers an example of synchronous variation of xerophytic pollen and microfossils indicative of temporary marsh desiccation, in concordance with regional evidence of aridification since the mid-Holocene.

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Del-Arco, M., Salas, M., Acebes, J. R., Marrero, M. C., Reyes-Betancort, J. A. & Pérez-de-Paz, P. L. 2002: Bioclimatology and climatophilous vegetation of Gran Canaria (Canary Islands). — Ann. Bot. Fennici 39: 15–41.

The bioclimates, ombrotypes, thermotypes, bioclimatic belts, climatophilous vegetation seres and potential natural vegetation of Gran Canaria were established and mapped. Due to salic substrates in the SW of the island, the potential natural vegetation map shows significant differences from the climatophilous seres map. Phytosociological tables of the terminal communities of each climatophilous sere are shown. The new association Pistacio lentisci–Oleetum cerasiformis is described.

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Duran, A. & Duman, H. 2002: Two new species of Centaurea (Asteraceae) from Turkey. — Ann. Bot. Fennici 38: 43–48.

Two new species of Centaurea L. (Asteraceae) from Turkey are described and illustrated. Centaurea cankiriense A. Duran & H. Duman (sect. Cheirolepis (Boiss.) O. Hoffm.) is restricted to the steppes of Dumanli Daâ (A4: Atkaracalar-Çankiri). Centaurea antalyense H. Duman & A. Duran (sect. Phalolepis (Cass.) DC.) occurs in forest and macchia in the south of Akseki district (C3: Antalya).

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Jutila, H. M. 2002: Seed banks of river delta meadows on the west coast of Finland. — Ann. Bot. Fennici 39: 49–61.

The seed banks of two delta meadows were studied on the west coast of Finland (61°33'N, 21°39'–21°41'E) to evaluate the possibilities of using seed bank in the restoration of coastal wetland meadows. The objective of the study was to determine the size, composition and species richness of germinable seed bank, estimate the effect of flooding on the seed bank, and describe the similarities and differences between seed bank and the aboveground vegetation. The study areas are conservationally important. A total of 125 samples were taken with a corer of 4.8 cm in diameter to the depth of 10 cm. Altogether 4977 seedlings were observed, yielding an average of 22005 ± 1880 seedlings/m2. Most seedlings and species in the seed bank were monocotyledons, perennials and hemicryptophytes, similar to the aboveground vegetation. Although 36 species were found in both the seed bank and vegetation, there was a significant lack of similarity overall (Mantel test). The seed bank flora included 24 dicot vs. 25 monocot species and 41 perennial vs. 8 annual species. Many of the species found only in the seed bank were annuals or biennials (13 species, 46% of total) and those growing only in the aboveground vegetation were mainly perennials (52 species, 92% of total). The most abundant species found in the seed bank were Carex nigra, C. aquatilis, Juncus gerardii, Calla palustris, and Potentilla palustris, which together made up 74% of the seed bank. The numbers of species differed significantly between different elevation classes and were highest at middle elevations. Seed bank is an important part of these delta grassland communities and can be utilised in restoration.

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Margonska, H. B. 2002: A new species of Crepidium (Orchidaceae, Malaxidinae) from Sabah, Borneo. — Ann. Bot. Fennici 39: 63–66.

A new species of Crepidium is described from the NE part of Borneo (Malaysia). Additionally, 15 new combinations at the species level are proposed in Crepidium.

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Romo, A., Stübing, G. & Peris, J. B. 2002: Plantago benisnassenii (Plantaginaceae), a new species from Morocco. — Ann. Bot. Fennici 39: 67–71.

Plantago benisnassenii Romo, Stübing & Peris sp. nova (Plantaginaceae) of the section Hymenopsyllium Pilger is described from Morocco and compared with related species of the section. An identification key to the species of sect. Hymenopsyllium is provided.

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Tibell, L. 2002: Morphological variation and ITS phylogeny of Chaenotheca trichialis and C. xyloxena (Coniocybaceae, lichenized ascomycetes). — Ann. Bot. Fennici 39: 73–80.

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.

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