Abstract: Ditrichum gracile was recorded in the locality Samarske stijene in the Velika Kapela Mt... more Abstract: Ditrichum gracile was recorded in the locality Samarske stijene in the Velika Kapela Mt for first time in Croatia. Ditrichum gracile occured within forests of common spruce belonging to the community Hyperico grisebachii-Piceetum on the forest floor, forming distinct patches of several square decimetres. The plants were of typical appearance, medium to robust, in reddish green to purplish black, rarely green patches.
... Ignatov MS, Ivanova EI, Ignatova EA, Krivoshapkin KK. 2001. On the moss flora of Ust-Maya Dis... more ... Ignatov MS, Ivanova EI, Ignatova EA, Krivoshapkin KK. 2001. On the moss flora of Ust-Maya District (Republic Sakha/Yakutia, East Siberia). Arctoa 10: 165184. Podpera J. 1906. ... London: Chapman & Hall, 191227. Syed H. 1973. A taxonomic study of Bryum capillare Hedw. ...
2013 Autumn Meeting of the Bryological and Lichenological Section of the Czech Botanical Society ... more 2013 Autumn Meeting of the Bryological and Lichenological Section of the Czech Botanical Society took place in the northeast-Moravian Beskydy Mts. The total of 221 bryophytes (60 liverworts and 161 moss species) recorded and/or collected during the Meeting’s excursions is listed in this contribution. The most important records included endangered taxa Bryum cyclophyllum, Pseudobryum cinclidioides, and Scorpidium revolvens, and vulnerable taxa Riccia warnstorfii, Syzygiella autumnalis, Buxbaumia viridis, Callicladium haldanianum, Hamatocaulis vernicosus, and Physcomitrium sphaericum.
Patterns of genetic variation and spatial genetic structure (SGS) were investigated in Crossocaly... more Patterns of genetic variation and spatial genetic structure (SGS) were investigated in Crossocalyx hellerianus, a strictly epixylic dioicous liverwort (Scapaniaceae s.l., Marchantiophyta). Studied populations were located in Fennoscandia and Central Europe, with localities differing in availability of substrate and the population connectivity, and their populations consequently different in size, density, and prevailing reproductive mode. A set of nine polymorphic microsatellites was successfully developed and used. Identical individuals were only found within populations. Especially in large populations, the majority of the individuals were genetically unique. Resampled number of genotypes, mean number of observed alleles per locus after rarefaction, and Nei's gene diversity in large populations reached high values and ranged between 4.41-4.97, 3.13-4.45, and 0.94-0.99, respectively. On the contrary, the values in small populations were lower and ranged between 1.00-4.42, 1.00-2.73, and 0.00-0.95, respectively. As expected, large populations were found to be more genetically diverse than small populations but relatively big diversity of genotypes was also found in small populations. This indicated that even small populations are important sources of genetic variation in bryophytes and processes causing loss of genetic variation might be compensated by other sources of variability, of which somatic mutations might play an important role. The presence of SGS was discovered in all populations. Large populations possessed less SGS, with individuals showing a pronounced decrease in kinship over 50 cm of distance. Apparent SGS of small populations even at distances up to 16 meters suggests the aggregation of similar genotypes, caused predominantly by the deposition of asexually formed gemmae. Although no strong kinship was detectable at the distances over 16 meters in both small and large populations, identical genotypes were occasionally detected at longer distances (20-80 m), suggesting effective dispersal of asexual propagules.
ABSTRACT Eight fen moss species (Aulacomnium palustre, Bryum pseudotriquetrum, Calliergonella cus... more ABSTRACT Eight fen moss species (Aulacomnium palustre, Bryum pseudotriquetrum, Calliergonella cuspidata, Campylium stellatum, Climacium dendroides, Hamatocaulis vernicosus, Plagiomnium elatum and Tomentypnum nitens) were studied in order to assess their ability to survive long-term drought. The mosses differed significantly in their desiccation resistance. The highest survival rate was shown in the hummock moss species Climacium dendroides, Aulacomnium palustre and Tomentypnum nitens, with more than 10% of stems surviving after 20 weeks of desiccation. On the other hand, in Campylium stellatum and Plagiomnium elatum, almost no stem survived after 6 weeks without water supply. The remaining mosses (Hamatocaulis vernicosus, Calliergonella cuspidata and Bryum pseudotriquetrum) showed medium desiccation resistance, which differed little among species. After 12 weeks of desiccation, less than 10% of their stems were able to restore their growth. In general, most species displayed remarkable desiccation resistance, unexpected for species from permanently wet fen habitats.
Abstract: Ditrichum gracile was recorded in the locality Samarske stijene in the Velika Kapela Mt... more Abstract: Ditrichum gracile was recorded in the locality Samarske stijene in the Velika Kapela Mt for first time in Croatia. Ditrichum gracile occured within forests of common spruce belonging to the community Hyperico grisebachii-Piceetum on the forest floor, forming distinct patches of several square decimetres. The plants were of typical appearance, medium to robust, in reddish green to purplish black, rarely green patches.
... Ignatov MS, Ivanova EI, Ignatova EA, Krivoshapkin KK. 2001. On the moss flora of Ust-Maya Dis... more ... Ignatov MS, Ivanova EI, Ignatova EA, Krivoshapkin KK. 2001. On the moss flora of Ust-Maya District (Republic Sakha/Yakutia, East Siberia). Arctoa 10: 165184. Podpera J. 1906. ... London: Chapman & Hall, 191227. Syed H. 1973. A taxonomic study of Bryum capillare Hedw. ...
2013 Autumn Meeting of the Bryological and Lichenological Section of the Czech Botanical Society ... more 2013 Autumn Meeting of the Bryological and Lichenological Section of the Czech Botanical Society took place in the northeast-Moravian Beskydy Mts. The total of 221 bryophytes (60 liverworts and 161 moss species) recorded and/or collected during the Meeting’s excursions is listed in this contribution. The most important records included endangered taxa Bryum cyclophyllum, Pseudobryum cinclidioides, and Scorpidium revolvens, and vulnerable taxa Riccia warnstorfii, Syzygiella autumnalis, Buxbaumia viridis, Callicladium haldanianum, Hamatocaulis vernicosus, and Physcomitrium sphaericum.
Patterns of genetic variation and spatial genetic structure (SGS) were investigated in Crossocaly... more Patterns of genetic variation and spatial genetic structure (SGS) were investigated in Crossocalyx hellerianus, a strictly epixylic dioicous liverwort (Scapaniaceae s.l., Marchantiophyta). Studied populations were located in Fennoscandia and Central Europe, with localities differing in availability of substrate and the population connectivity, and their populations consequently different in size, density, and prevailing reproductive mode. A set of nine polymorphic microsatellites was successfully developed and used. Identical individuals were only found within populations. Especially in large populations, the majority of the individuals were genetically unique. Resampled number of genotypes, mean number of observed alleles per locus after rarefaction, and Nei's gene diversity in large populations reached high values and ranged between 4.41-4.97, 3.13-4.45, and 0.94-0.99, respectively. On the contrary, the values in small populations were lower and ranged between 1.00-4.42, 1.00-2.73, and 0.00-0.95, respectively. As expected, large populations were found to be more genetically diverse than small populations but relatively big diversity of genotypes was also found in small populations. This indicated that even small populations are important sources of genetic variation in bryophytes and processes causing loss of genetic variation might be compensated by other sources of variability, of which somatic mutations might play an important role. The presence of SGS was discovered in all populations. Large populations possessed less SGS, with individuals showing a pronounced decrease in kinship over 50 cm of distance. Apparent SGS of small populations even at distances up to 16 meters suggests the aggregation of similar genotypes, caused predominantly by the deposition of asexually formed gemmae. Although no strong kinship was detectable at the distances over 16 meters in both small and large populations, identical genotypes were occasionally detected at longer distances (20-80 m), suggesting effective dispersal of asexual propagules.
ABSTRACT Eight fen moss species (Aulacomnium palustre, Bryum pseudotriquetrum, Calliergonella cus... more ABSTRACT Eight fen moss species (Aulacomnium palustre, Bryum pseudotriquetrum, Calliergonella cuspidata, Campylium stellatum, Climacium dendroides, Hamatocaulis vernicosus, Plagiomnium elatum and Tomentypnum nitens) were studied in order to assess their ability to survive long-term drought. The mosses differed significantly in their desiccation resistance. The highest survival rate was shown in the hummock moss species Climacium dendroides, Aulacomnium palustre and Tomentypnum nitens, with more than 10% of stems surviving after 20 weeks of desiccation. On the other hand, in Campylium stellatum and Plagiomnium elatum, almost no stem survived after 6 weeks without water supply. The remaining mosses (Hamatocaulis vernicosus, Calliergonella cuspidata and Bryum pseudotriquetrum) showed medium desiccation resistance, which differed little among species. After 12 weeks of desiccation, less than 10% of their stems were able to restore their growth. In general, most species displayed remarkable desiccation resistance, unexpected for species from permanently wet fen habitats.
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