Phylogeny of the Calliergonaceae (Bryophyta) based on molecular and morphological data

Hedenäs, Lars; Oliván, Gisela; Eldenäs, Pia

doi:10.1007/s00606-004-0281-5

Cited by 14 publications

(13 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The other Sarmentypnum species haplotype groups are also directly connected with S. sarmentosum, or there is only a single other species in between (S. pseudosarmentosum, only chloroplast, and S. tundrae). Sarmentypnum sarmentosum appeared as sister to a clade with the other Sarmentypnum species in the earlier exemplar-based study (Hedenäs & al., 2005;Hedenäs, 2006) and has a position relatively close to the rooting outgroup taxa, Loeskypnum and Straminergon, in the present haplotype networks. This species therefore appears to be a key species in understanding the diversification in the genus.…”

Section: Specimen Numbermentioning

confidence: 66%

“…Hedenäs and a few samples of four other Sarmentypnum members implied both paraphyletic speciation and molecularly imperfectly separate species (Hedenäs, 2009a). Such patterns could potentially explain the lack of well-supported resolution among these species in earlier exemplar-based studies of this genus (Hedenäs & al., 2005;Hedenäs, 2006).…”

Section: Introductionmentioning

confidence: 91%

See 1 more Smart Citation

Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae)

Hedenäs

2011

TAXON

View full text Add to dashboard Cite

Relationships among species in Sarmentypnum, and Warnstorfia, are investigated based on the nuclear ITS and the chloroplast markers trnL–trnF, rpl16, and tRNA–Gly of up to 237 specimens. Six specimens in which morphology agrees with ITS sequences have chloroplast markers belonging to other species, whereas in two specimens morphology agrees with the chloroplast markers but have ITS sequences belonging to other species. Although hybridization has been recorded in Sarmentypnum, such incongruence could also be a result of other processes, including rapid morphological differentiation and incomplete lineage sorting. ITS and the chloroplast markers partly agree with the morphological species, although some of the latter appear to be polyphyletic or paraphyletic. Sarmentypnum exannulatum consists of two to three haplotype groups that are connected to S. sarmentosum, but not with each other. Sarmentypnum sarmentosum haplotypes are connected with haplotypes of most other species and may have played a central role in the genus' diversification. The trnL–trnF spacer inversion shows patterns congruent with other chloroplast information; it is therefore clearly informative. The incongruence among mainly non–coding molecular datasets and partial disagreement with morphological species could possibly be attributable to the special history of the boreal to arctic environments where Sarmentypnum is predominantly found. The species must be young in terms of number of generations and have experienced large–scale climatic oscillations during the Pleistocene. Incomplete lineage sorting in combination with rapid morphological evolution that is not reflected in the non–coding markers and an unknown frequency of hybridization most likely explains the observed incongruence.

show abstract

Section: Specimen Numbermentioning

confidence: 66%

Section: Introductionmentioning

confidence: 91%

Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae)

Hedenäs

2011

TAXON

View full text Add to dashboard Cite

show abstract

“…We focussed on seven relatively common moss species of different habitats, representative of different groups within the Amblystegiaceae and Calliergonaceae (Hedenäs and Vanderpoorten 2007;Hedenäs et al 2005): Palustriella falcata (Brid.) Hedenäs, Scorpidium cossoni (Schimp.)…”

Section: Field Surveymentioning

confidence: 99%

“…1). The ancestral Amblystegiaceae and Calliergonaceae species P. falcata and Scorpidium spp., respectively, are characteristic for more calcareous wetlands, while the more derived Calliergonaceae species, S. exannulatum, S. stramineum and W. fluitans occur under mineralpoor conditions (Hedenäs and Vanderpoorten 2007;Hedenäs et al 2005). To put differences between brown moss species in a wider perspective, we also collected some samples in the Netherlands (NL), for Fig.…”

Section: Field Surveymentioning

confidence: 99%

“…To put differences between brown moss species in a wider perspective, we also collected some samples in the Netherlands (NL), for Fig. 1 Phylogenetic relationships among the seven moss species of this study, based on Hedenäs (2006) and Hedenäs et al (2005) the rich-fen S. scorpioides, which is still relatively common in Northwest-Overijssel, and the poor-fen W. fluitans, which is often found in shallow, acidified lakes in the central part of the country.…”

Section: Field Surveymentioning

confidence: 99%

See 1 more Smart Citation

Changes in nutrient availability from calcareous to acid wetland habitats with closely related brown moss species: increase instead of decrease in N and P

Kooijman

Hedenäs

2009

Plant Soil

View full text Add to dashboard Cite

To test whether shifts in nutrient availability from calcareous to mineral-poor habitats could be a driving force in the evolution of seven closely related wetland brown mosses, we measured soil and vascular plant nutrients and conducted a laboratory incubation experiment with Swedish and some Dutch samples, in which net N and P-mineralization, respiration and microbial characteristics were measured. In spite of high respiration and microbial N, net N-mineralization appeared to be low for the calcareous Palustriella falcata and Scorpidium spp. Net Nmineralization significantly increased (and respiration and microbial N decreased) for the mineral-poor Sarmentypnum exannulatum, Straminergon stramineum and Warnstorfia fluitans, probably due to a decrease in microbial N-demand. Even though values were mainly negative, net P-mineralization showed a similar increase from calcareous to mineral-poor fens, probably due to lower precipitation of calcium phosphate. The calcareous habitat of the early wetland mosses may thus have been nutrient-poor instead of nutrient-rich. Adaptation to mineral-poor habitats, probably driven by expansion of mineral-poor wetlands when the boreal zone became colder and wetter, may have been associated with higher availability of ammonium and phosphate. However, this may have stimulated Sphagnum more than brown mosses, which may have been restricted to particular niches with perhaps some nitrification.

show abstract

Cryptic speciation, habitat differentiation, and geography in Hamatocaulis vernicosus (Calliergonaceae, Bryophyta)

Hedenäs

Eldenäs

2007

Plant Syst. Evol.

View full text Add to dashboard Cite

Phylogeny of the Calliergonaceae (Bryophyta) based on molecular and morphological data

Cited by 14 publications

References 20 publications

Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae)

Incongruence among morphological species circumscriptions and two molecular datasets in Sarmentypnum (Bryophyta: Calliergonaceae)

Changes in nutrient availability from calcareous to acid wetland habitats with closely related brown moss species: increase instead of decrease in N and P

Cryptic speciation, habitat differentiation, and geography in Hamatocaulis vernicosus (Calliergonaceae, Bryophyta)

Contact Info

Product

Resources

About