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Vegetative growth of bryophytes is dependent on water and will stop as soon as the plants dry out. The growth rate depends on the quality of the micro-habitat. Clonal growth and dispersal of plant fragments are important parameters to understand local distribution of bryophytes lacking spore and gemmae production. Species of the mixed northern hepatic mat mainly rely on plant fragments and vegetative growth to disperse and maintain local populations. Understanding a species' means for population maintenance and dispersal potential is important for a successful management. This study aims to investigate the micro-scale climatic requirements and growth rate of the mixed northern hepatic mat species Scapanianimbosa through measuring its growth in situ in Norway, and through comparison of micro-climate between presence localities and seemingly suitable absence localities. The results show that S. nimbosa grows approximately 4.38 ± 2.78 mm during one growing season. No difference in micro-climate was found between the presence and absence localities, suggesting that S. nimbosa is limited by dispersal, not by suitable habitats. The availability of suitable habitat, and the ability to identify these, opens up the possibility to expand its range through transplantation of plant fragments.
Sphagnum beothuk was recently found new to Europe in Norway as the dark morph of Sphagnum fuscum proved to be conspecific with the north american S. beothuk. The Norwegian distribution suggests that it may also occur in other oceanic parts of northwestern Europe. In 2016, I made a brief survey of a number of mires in the province of Bohuslän in the westernmost part of Sweden. In three bogs, I found only S. fuscum, but in one bog this species co-occurred with S. beothuk. This implies that S. fuscum is the most common of the two species in the suboceanic part of Sweden. However, to determine the actual frequency and distribution of S. beothuk, a more extensive survey of bogs in the westernmost part of Sweden is required.
The liverwort flora of the Faeroe Isles is presented with distribution maps of the approximately 132 taxa recorded from the islands. The flora is the result of a climate with high yearly precipitation, relatively mild winters, and rainy summers, comparable to the Queen Charlotte Islands. The distribution and phytogeography of some Faeroese liverworts are discussed. Many taxa have an Atlantic or subatlantic distribution, probably indicating the route invading species took at the end of Pleistocene. Some taxonomic notes and annotations pertinent to Faeroese liverworts are included. Calypogeia paludosa Warnst. is reinterpreted as a variety of C. fissa (L.) Raddi.
Seasonal changes in the total phenolic content, flavonoid content, specific activity of the enzyme polyphenol oxidase (PPO) and that of the antioxidative enzymes-catalase (CAT) and peroxidases (POX) were analyzed in three leafy liverworts, namely Solenostoma crenulata, Chiloscyphus gollani and Fossombronia himalayensis. In the rainy season (July–September), the plants were in their young juvenile stage and the levels of activity of antioxidative enzymes catalase (CAT) and peroxidases (POX) were observed to be the lowest. The enzymes showed maximum activity during the months January–March which constitute a dormant season for bryophytes. Activity of POX is found to be higher than that of CAT in all the three seasons. Highest content of flavonoids was observed towards the end of the growing season (January–March). Total phenolic content was found to be highest in winter season (October–December). PPO showed highest activity in the rainy season (July–September) and lowest during winter season. Activity of enzyme PPO and that of phenolic content showed inverse relationship.
Fissidens neomagofukui, so far known only from its type locality in Japan, has been discovered in the Indira Gandhi National Park, Anamalais, in Western Ghats in India. A description is provided with figures, a photo plate and a key to distinguish F. neomagofukui from the similar F. diversifolius.
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