Handbook of European Sphagna.

Tallis, John; Daniels, R. E.; Eddy, Alan

doi:10.2307/2260246

Cited by 6 publications

(10 citation statements)

References 4 publications

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“…Noteworthy, many specimens of Asian S. talbotianum kept in herbaria were previously assigned to S. rubellum for which the oceanic tendency in distribution was mentioned (Daniels & Eddy, 1990). Our results confirm this point of view since our revision did not reveal Asian specimens of this species yet.…”

Section: Morphologysupporting

confidence: 83%

Sphagnum Warnstorfii complex in Northern Asia

Shkurko,

Kuznetsova,

Fedosov

2023

Arctoa, a jornal of bryology

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An identity of the North Asian Sphagnum plants, which combine macroscopical aspect of S. rubellum and microscopical traits characteristic to S. warnstorfii, was assessed using molecular phylogenetic and morphological data. Molecular phylogenetic reconstruction based on RAPD-A, RAPD-B and trnG sequences found a lineage sister to S. warnstorfii, which includes two highly supported lineages, welldefined morphologically. One of these lineages comprises plants different from the other red Sphagnum sect. Acutifolia species in having (1) often slightly curved branches with 5-ranked leaves, (2) triangular-lingulate stem leaves with faint fibrils at apical part, and (3) small, rounded-elliptical pores at apical part of the branch leaves at convex surface. Morphological traits and ecological preferences of these plants agree S. talbotianum R.E. Andrus described from Alaska and also correspond to the arctic morphotype of S. warnstorfii revealed and described by Yousefi et al. Therefore we refer such Asian plants to S. talbotianum, and described and illustrate them based on material from North Asia. The plants from the second lineage differ from S. warnstorfii s.str. and S. talbotianum by lingulate stem leaves with more lacerate apex and the large round pores at apical part or sometimes scattered throughout at concave side of the branch leaves. РезюмеВидовая принадлежность североазиатских образцов сфагновых мхов, сочетающих в себе внешний облик, напоминающий Sphagnum rubellum, и микроскопические признаки, свойственные S. warntsorfii, была оценена с использованием данных молекулярно-филогенетического анализа и морфометрии. Результаты молекулярно-филогенетической реконструкции, основанной на последовательностях участков RAPD-A, RAPD-B и trnG, выявили отдельную филогенетическую линию, сестринскую S. warnstorfii и включающую в себя две хорошо поддержанные клады, образованные образцами, различающимися морфологически. Растения одной из этих клад отличаются от других родственных видов (1) часто изогнутыми веточками с 5-ти рядным листорасположением, (2) треугольно-языковидными стеблевыми листьями со слабыми фибриллами в апикальной части и (3) мелкими округло-эллиптическими порами в апикальной части веточных листьев с внешней стороны. Морфологические признаки и экологические предпочтения этих растений соответствуют S. talbotianum, описанному Эндрюсом из Аляски, а также арктическому морфотипу S. warnstorfii, выделенному Юзефи с соавторами. Таким образом, мы отнесли Азиатские растения из этой клады к S. talbotianum, и описали и проиллюстрировали их, основываясь на Североазиатском материале. Растения из второй клады отличаются от вышеупомянутых растений языковидной формой стеблевого листа с более широко надорванной верхушкой и крупными круглыми порами на внутренней стороне веточного листа, расположенными в апикальной части или иногда рассеянными по всей внутренней поверхности листа.

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Section: Morphologysupporting

confidence: 83%

Sphagnum Warnstorfii complex in Northern Asia

Shkurko,

Kuznetsova,

Fedosov

2023

Arctoa, a jornal of bryology

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“…As expected, we found a clear distinction in moss composition in the fen compared to the raised bogs that followed a gradient of acidity and nitrogen availability (Figure 1 and Table 2). The two mosses that occurred exclusively in the fen were Sphagnum subnitens and Calliergonella cuspidata (Table 2): the first typically grows in poor fens, but also in oligo‐ to mesotrophic habitats (Daniels & Eddy, 1990; Frahm & Frey, 1987), and the second is found in marshes and wet meadows, but also on wet stems and rocks (Frahm & Frey, 1987). On the contrary, the two most common species that were absent in the fen are typical raised bog Sphagna: Sphagnum magellanicum agg.…”

Section: Discussionmentioning

confidence: 99%

Habitat conditions and not moss composition mediate microbial community structure in Swiss peatlands

Korn,

Berg,

Bersier

et al. 2024

Environmental Microbiology

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Peatlands, one of the oldest ecosystems, globally store significant amounts of carbon and freshwater. However, they are under severe threat from human activities, leading to changes in water, nutrient and temperature regimes in these delicate systems. Such shifts can trigger a substantial carbon flux into the atmosphere and diminish the water‐holding capacity of peatlands. Microbes associated with moss in peatlands play a crucial role in providing these ecosystem services, which are at risk due to global change. Therefore, understanding the factors influencing microbial composition and function is vital. Our study focused on five peatlands along an altitudinal gradient in Switzerland, where we sampled moss on hummocks containing Sarracenia purpurea. Structural equation modelling revealed that habitat condition was the primary predictor of community structure and directly influenced other environmental variables. Interestingly, the microbial composition was not linked to the local moss species identity. Instead, microbial communities varied significantly between sites due to differences in acidity levels and nitrogen availability. This finding was also mirrored in a co‐occurrence network analysis, which displayed a distinct distribution of indicator species for acidity and nitrogen availability. Therefore, peatland conservation should take into account the critical habitat characteristics of moss‐associated microbial communities.

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“…Nutrient dynamics of 12 Sphagnum species, categorized into three groups, slower‐ ( S. papillosum , S. magellancium , S. fuscum , S. rubellum , S. austinii ), medium‐ ( S. palustre , S. centrale ) and fast‐growing ( S. denticulatum , S. fallax , S. riparium , S. fimbriatum , S. squarrosum ), were examined under similar nutrient‐rich and constantly wet field conditions. Generally, the species categorized as fast‐growing are better adapted to these minerotrophic conditions, whereas the slower‐growing species, mostly ombrotrophic bog species occupying hummocks and dry lawns, do not usually grow under such nutrient‐rich conditions (Sjörs 1950; Daniels & Eddy 1985; Lamers et al . 1999; Rydin & Jeglum 2013).…”

Section: Discussionmentioning

confidence: 99%

“…2006; Hájková & Hájek 2007). As such, the slower‐growing group (corresponding to hummock/bog species) are not well adapted to such conditions, as opposed to most of the fast‐growing species, which occur under more minerotrophic conditions (Daniels & Eddy 1985; Wojtuń 1994). Consequently, the high Mg and Ca concentrations might have reduced C and nutrient sequestration through reduced K uptake of the slower‐growing group (Rice 2009).…”

Section: Discussionmentioning

confidence: 99%

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Nutrient dynamics of 12 Sphagnum species during establishment on a rewetted bog

Käärmelahti¹,

Temmink

Dijk

et al. 2023

Plant Biol J

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Peatland degradation through drainage and peat extraction have detrimental environmental and societal consequences. Rewetting is an option to restore lost ecosystem functions, such as carbon storage, biodiversity and nutrient sequestration. Peat mosses (Sphagnum) are the most important peat‐forming species in bogs. Most Sphagnum species occur in nutrient‐poor habitats; however, high growth rates have been reported in artificial nutrient‐rich conditions with optimal water supply. Here, we demonstrate the differences in nutrient dynamics of 12 Sphagnum species during their establishment in a 1‐year field experiment at a Sphagnum paludiculture area in Germany. The 12 species are categorized into three groups (slower‐, medium‐ and fast‐growing). Establishment of peat mosses is facilitated by constant supply of nutrient‐rich, low pH, and low alkalinity surface water. Our study shows that slower‐growing species (S. papillosum, S. magellancium, S. fuscum, S. rubellum, S. austinii; often forming hummocks) displayed signs of nutrient imbalance. These species accumulated higher amounts of N, P, K and Ca in their capitula, and had an elevated stem N:K quotient (>3). Additionally, this group sequestered less C and K per m2 than the fast and medium‐growing species (S. denticulatum, S. fallax, S. riparium, S. fimbriatum, S. squarrosum, S. palustre, S. centrale). Lower lawn thickness may have amplified negative effects of flooding in the slower‐growing species. We conclude that nutrient dynamics and carbon/nutrient sequestration rates are species‐specific. For bog restoration, generating ecosystem services or choosing suitable donor material for Sphagnum paludiculture, it is crucial to consider their compatibility with prevailing environmental conditions.

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Handbook of European Sphagna.

Cited by 6 publications

References 4 publications

Sphagnum Warnstorfii complex in Northern Asia

Sphagnum Warnstorfii complex in Northern Asia

Habitat conditions and not moss composition mediate microbial community structure in Swiss peatlands

Nutrient dynamics of 12 Sphagnum species during establishment on a rewetted bog

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