Showing papers in "Flora in 2005"

TL;DR: Depending on the developmental program of the species, these functions may act during pollen presentation, in relation to pollinators, during pollen dispersal and when pollen reaches the stigma.

TL;DR: Drought tolerance of S. aculeata showed a higher degree of drought tolerance than P. vulgaris (salt sensitive), and was found to be associated with a smaller reduction in number and mass of root nodules, a high activity of nitrate reductase in leaves and nodule, high accumulation of free proline in roots and nodles, and high glycine betaine content in nodules.

TL;DR: Solidago gigantea is a rhizomatous perennial herb native to northern America and introduced in Europe that is a serious invader of disturbed mesic sites, often forming dense monospecific stands.

TL;DR: A phytosociological study was conducted in a riparian forest of the Rio Paraguai near Corumba and Ladario in the state of Mato Grosso do Sul, Brazil as discussed by the authors.

TL;DR: Relatively high representation of persistent seed bank records suggests that, except for some sensitive perennials, the studied community is adapted to recurrent disturbances and community regeneration seems to be limited by slow spread of perennial graminoids.

TL;DR: In this article, the authors developed allometric equations for trees of the Macaronesian laurel forest in the Canary Islands to estimate the above ground primary productivity in forest ecosystems by non-destructive means.

TL;DR: Making the Ecuadorian superparamo flora richer in species than that of Venezuela and that of Colombia which appears to have fewer species, Redundance Analysis suggested that geological origin of the substrate (metamorphic versus volcanic bedrock) was important for the floristic composition.

TL;DR: In this article, the authors classify seasonal savannas dominated by C 4 grasses of the genus Trachypogon and understand the environmental factors that determine their composition and structure.

TL;DR: In this paper, the patterns of random-amplified polymorphic DNA (RAPD) variation among 11 populations of varying size were analysed to assess any possible local differentiation, in relation to spatial isolation, resulting from random genetic drift brought on by reduced population size and lack of migration between geographically isolated populations.

TL;DR: Different seed traits correlated with seed retention times in the long cattle fur and in the short horse fur, respectively, with corresponding potential half-life dispersal distances in the order of magnitude of tens of metres to a few kilometres.

TL;DR: In this paper, the relevance of chemical site factors for the abundance of epiphytic lichens was studied in Picea engelmannii-Abies lasiocarpa forests of the Salish Mountains, northwestern Montana, USA.

TL;DR: It is concluded that plants derived from different fruit types differ in growth characteristics and population parameters which can have pronounced effect on the life cycle and population regeneration in successive years.

TL;DR: In this article, the effect of xylem sap flow in stems of mature Betula pendula Roth on radial CO 2 efflux was studied from April to October 2001, where temperature-controlled respiration cuvettes allowed measurements of CO2 efflux without interference from temperature gradients between stem surface and sapwood.

TL;DR: It could be shown that establishment of J. cyanoides is possible after sheep-epizoochorous dispersal, but is severely limited by several factors.

TL;DR: Overall, ecophysiological responses were often more clearly related to individual species rather than to taxonomic affinities in higher hierarchies inHigher hierarchies (family, genus) or habitat.

TL;DR: In this article, a comparison of the age and spatial structure of two populations of Taxus baccata in the Kornik Arboretum, formed spontaneously under different initial conditions is presented.

TL;DR: In this article, the crossability between P. uliginosa and P. sylvestris was analyzed in a sympatric population at Wegliniec reserve in Poland.

TL;DR: It is shown that seed relocation by ants does not contribute significantly to seed bank build-up at this study site, and ants may, however, increase the regeneration success of myrmecochores, mainly by dispersal for distance and placement in a larger spectrum of microsites, in contrast to species not adapted for myRMecochory.

TL;DR: In this article, the authors examined the relationship between the environmental conditions of crust moisture content (MC), temperature, and ambient CO2 concentration on photosynthetic rates during the mid-spring and the late autumn.

TL;DR: In this paper, the authors analyzed the world distribution of 619 vascular plant species known from an area of 500 km 2 within the western Khentey Mountains, northern Mongolia, and found that most species belong to Eastern Asian (29%) or Asian, Eurasian, or circumpolar temperate species (24%) supporting the classification of the Khentys Mountains as part of the temperate zone of Eurasia.

TL;DR: The presence of a halophytic and sub-halophytic flora in grasslands reclaimed from the sea several centuries ago on the west Atlantic coast in France appears very unusual and the reasons for its survival are still uncertain this paper.

TL;DR: In this paper, the authors examined the surface of 66 leaves of 11 accessions of Phaseolus vulgaris var. aborigineus by means of light and scanning electron microscopy.

TL;DR: In this article, the authors investigated the fertility of Saxifraga moschata Wulfen in three climatically varying years on early and latethawing sites at 2340 m a.s.l.

TL;DR: The morphological features of A. aestivus root tubers and the major part of the total plant biomass are responsible for the species’ occurrence and frequent dominance in a wide array of arid environments.

TL;DR: In this paper, the low content of lipids, starch and proteins revealed by histochemical and biochemical analyses on M. communis elaiosomes suggests that the myrtle is a plant with a multiple pattern of seed dispersal.

TL;DR: Pollen grains of 26 species of the genus Gagea distributed in Iran were examined by light and scanning electron microscopy showing that the sculpturing of exine provides valuable characters for separating the species, sometimes even for closely related ones, and delimitation of natural groups within the genus.

TL;DR: The different morphological and phenological traits of LS and SS suggest a specialisation in carbon gain along different time periods of the year.

TL;DR: The low values of species and plant densities in the waterlogging period may indicate the non- adaptation of most cerrado species to waterlogged conditions, and the many savanna plant responses to environmental perturbations may explain the persistence of savanna communities within a broad range of environmental variation.

TL;DR: The annual garden spice legume Trigonella coerulea was subjected to controlled drought conditions to investigate the influence of resource limitation on flowering, seed production and germination and was not able to adapt reproduction to water shortage.

TL;DR: The results suggest that microsporogenesis, male gametogenesis, and callose dynamics during these processes are generally normal in this species, and that the callose wall plays an important role in the production of functional pollen grains.