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Average numbers of lichen and bryophyte taxa and all cryptogams, respectively, on different sampling dates in differently managed parts of the studied communities (n = 40). (CC-Corynephorus canescens dominance, FV-Festuca vaginata dominance). Values exhibiting different letters indicate significant differences in the medians according to Tukey tests. Read vertically and interpret within a community and a taxonomic group (e.g., among lichens in CC).
Source publication
Cryptogams, often neglected in vegetation dynamics studies, compose a large part of biomass and contribute to the biodiversity of sandy grasslands. Since the work of Verseghy (1970s), their productivity has not been analyzed in Hungary. We studied the lichen and bryophyte dynamics (hereinafter called cryptogams) at two Eastern Hungarian dry sandy g...
Contexts in source publication
Context 1
... average numbers of lichens, bryophytes and all cryptogamic taxa are shown in Table 1, whereas detailed species lists, species frequencies and biomass distributions are available in Tables A1 and A2 in Appendix A. The total records of the taxa on the two dates, two communities and treatments were close to one thousand, out of which somewhat more than 40% came from the lichens and somewhat less than 60% from the bryophytes. All but one lichen species belong to the genus Cladonia, and this genus comprised more than 99.5% of all the lichen records too. ...Context 2
... biomass share of C. magyarica has been similar to its frequency. Among the bryophytes, Polytrichum has been overrepresented (close to 45%), Brachythecium underrepresented, while Syntrichia had a consistent share compared to its frequency record (Figure 1) (see also Tables A1 and A2 in Appendix A) The overall distribution of biomass among the lichens (46%) and bryophytes (54%) is similar to that of the overall frequency records. The averages of the biomass of the lichens, bryophytes and of all the cryptogamic taxa are shown in Table 2. ...Citations
We selected 15 sheep‐grazed sand pastures along a gradient of increasing grazing intensity to study the fine‐scale patterns of main biomass fractions (green biomass, litter) and that of plant species and functional groups (life forms and social behaviour types). We classified them into five grazing intensity levels based on stocking density, proximity to drinking and resting places and the number of faeces. We aimed to answer the following questions: (i) How does increasing intensity of sheep grazing affect the amount of green biomass, the species richness and their relationship in sand pastures? (ii) How does increasing intensity of sheep grazing affect the biomass of perennial and short‐lived graminoids and forbs? (iii) How does the disturbance value—expressed in the biomass ratio of disturbance‐tolerant and ruderal species—change along the gradient of grazing intensity? A unimodal relationship between green biomass and species richness was detected; however, the ordination (canonical correspondence analysis, CCA) showed no clustering of pastures subjected to the same levels of grazing intensity. Along the grazing intensity gradient we found an increasing trend in species richness and significant differences in green biomass (decreasing trend), litter (decreasing trend), graminoids (decreasing trend) and short‐lived forbs (increasing trend). We found an increasing amount of disturbance‐tolerant and ruderal species with increasing grazing intensity. We suggest that we might need to use multiple scales for sampling and a fine‐scale assessment of grazing intensity. Our findings might be instructive for pastures in densely populated regions, which are prone to the encroachment of disturbance‐tolerant and ruderal species.
Die Literaturzusammenstellung berücksichtigt überwiegend Publikationen aus dem Jahr 2023 sowie dem ersten Quartal des Jahres 2024 und beinhaltet hauptsächlich Fachbücherund Fachartikel zu Studien und Fundberichten über Moose in Mitteleuropa. Sie erhebt dabei keinen Anspruch auf Vollständigkeit. Zusätzlich sind außereuropäische Arbeiten aufgelistet, die aufgrund der behandelten Arten oder Methoden von Interesse sind. Für aktuelle Veröffentlichungen mit Fokus auf Taxonomie und Systematik sei auf den Beitrag „Taxonomische und nomenklatorische Neuerungen – Moose, von Markus K. Meier in diesem Herzogiella-Heft verwiesen. Für Hinweise auf entsprechende Publikationen für kommendeFolge dieser Serie sind wir dankbar.
We selected 15 sheep-grazed sand pastures along increasing grazing intensity to study fine scale biomass patterns of main fractions (green biomass, litter) and that of plant species and functional groups (life forms and social behaviour types). We classified them into five grazing intensity levels based on stocking rate, proximity to drinking and resting places, and the number of droppings and other tracks of grazing animals. We formulated three study questions: i) How does increasing intensity of sheep grazing affect the amount of green biomass, species richness and their relationship in sand pastures? ii) How does increasing intensity of sheep grazing affect the biomass of perennial and short-lived graminoids and forbs? iii) How does disturbance value (expressed in the biomass ratio of disturbance tolerant and ruderal species) change along the gradient of grazing intensity? A unimodal relationship between green biomass and species richness was detected. Along the grazing intensity gradient, we found an increasing trend for species richness; significant differences for green biomass (decreasing trend) and litter (decreasing trend), moreover for graminoids (decreasing trend), and short-lived forbs (increasing trend). We found an increasing amount of disturbance tolerant and ruderal species with increasing grazing intensity. We concluded that stocking rate and proximity to drinking and resting places jointly affected vegetation and created an uneven pattern for composition and amount of biomass in all grazing intensity levels. Our findings might be instructive for pastures in densely populated regions which are prone to the encroachment of disturbance-tolerant and ruderal species.
