Calcium intolerance of fen mosses: physiological evidence,
effects of nutrient availability and successional drivers

J 2015

Calcium intolerance of fen mosses: physiological evidence, effects of nutrient availability and successional drivers

VICHEROVÁ, Eliška, Michal HÁJEK and Tomáš HÁJEK

Basic information

Original name

Calcium intolerance of fen mosses: physiological evidence, effects of nutrient availability and successional drivers

Authors

VICHEROVÁ, Eliška (203 Czech Republic, guarantor), Michal HÁJEK (203 Czech Republic, belonging to the institution) and Tomáš HÁJEK (203 Czech Republic)

Edition

Perspectives in Plant Ecology, Evolution and Systematics, Elsevier, 2015, 1433-8319

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Germany

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 3.578

RIV identification code

RIV/00216224:14310/15:00081273

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1016/j.ppees.2015.06.005

UT WoS

000363816500002

Keywords (in Czech)

vápnomilnost; fundamentální nika; Sphagnum

Keywords in English

Calcicole–calcifuge; Fundamental niche; Sphagnum

Abstract

V originále

Our results suggest that calcium toxicity in calcifugous bryophytes is caused by insufficient control over the balance of intracellular Ca2+ uptake/efflux. Cell-wall cation-exchange sites of living mosses remain unsaturated with Ca2+ even in calcareous solutions, contradicting the proposed inhibitory effect of Ca2+-oversaturation on cell-wall expansion and monovalent cation uptake. Growth and biomass accumulation of brown mosses was highest in alkaline fen waters, but they could also survive and germinate in poor-fen waters. Calcium-tolerant sphagna survived along the entire poor–rich gradient, but their growth was inhibited by calcium bicarbonate. The three most obviously expanding sphagna produced protonemata even under calcareous conditions. Flowing but not stagnant alkaline fen waters were toxic for calcifugous sphagna, the strongest competitors in poor-fen waters. Increased potassium availability facilitated the survival of calcifugous sphagna in alkaline fens, corroborating field observations that potassium facilitates sphagnum expansion. Surprisingly, the rare and declining moss Hamatocaulis vernicosus was supported by nitrogen and phosphorus more than its competitors. Our comparison of fundamental and realized niches suggests that the dominance of particular moss functional groups in fens is governed by a competitive hierarchy altered by different calcium levels. The expansion of calcium-tolerant sphagna into brown-moss fens therefore requires perturbation that weakens competition. Additionally, expansion of calcifugous sphagna to alkaline environments may be stimulated by potassium availability.

Links

GAP505/10/0638, research and development project

Name: Kalcitolerance rašeliníků, její fyziologické a genetické pozadí a konsekvence v ekologii rašelinišť

Investor: Czech Science Foundation

Citovat

VICHEROVÁ, Eliška, Michal HÁJEK and Tomáš HÁJEK. Calcium intolerance of fen mosses: physiological evidence, effects of nutrient availability and successional drivers. Perspectives in Plant Ecology, Evolution and Systematics. Elsevier, 2015, vol. 17, No 5, p. 347-359. ISSN 1433-8319. Available from: https://dx.doi.org/10.1016/j.ppees.2015.06.005.

@article{1319633,
   author = {Vicherová, Eliška and Hájek, Michal and Hájek, Tomáš},
   article_number = {5},
   doi = {http://dx.doi.org/10.1016/j.ppees.2015.06.005},
   keywords = {Calcicole–calcifuge; Fundamental niche; Sphagnum},
   language = {eng},
   issn = {1433-8319},
   journal = {Perspectives in Plant Ecology, Evolution and Systematics},
   title = {Calcium intolerance of fen mosses: physiological evidence, effects of nutrient availability and successional drivers},
   url = {http://www.sciencedirect.com/science/article/pii/S1433831915000645},
   volume = {17},
   year = {2015}
}

TY  - JOUR
ID  - 1319633
AU  - Vicherová, Eliška - Hájek, Michal - Hájek, Tomáš
PY  - 2015
TI  - Calcium intolerance of fen mosses: physiological evidence, effects of nutrient availability and successional drivers
JF  - Perspectives in Plant Ecology, Evolution and Systematics
VL  - 17
IS  - 5
SP  - 347-359
EP  - 347-359
PB  - Elsevier
SN  - 14338319
KW  - Calcicole–calcifuge
KW  - Fundamental niche
KW  - Sphagnum
UR  - http://www.sciencedirect.com/science/article/pii/S1433831915000645
N2  - Our results suggest that calcium toxicity in calcifugous bryophytes is caused by insufficient control over the balance of intracellular Ca2+ uptake/efflux. Cell-wall cation-exchange sites of living mosses remain unsaturated with Ca2+ even in calcareous solutions, contradicting the proposed inhibitory effect of Ca2+-oversaturation on cell-wall expansion and monovalent cation uptake. Growth and biomass accumulation of brown mosses was highest in alkaline fen waters, but they could also survive and germinate in poor-fen waters. Calcium-tolerant sphagna survived along the entire poor–rich gradient, but their growth was inhibited by calcium bicarbonate. The three most obviously expanding sphagna produced protonemata even under calcareous conditions. Flowing but not stagnant alkaline fen waters were toxic for calcifugous sphagna, the strongest competitors in poor-fen waters. Increased potassium availability facilitated the survival of calcifugous sphagna in alkaline fens, corroborating field observations that potassium facilitates sphagnum expansion. Surprisingly, the rare and declining moss Hamatocaulis vernicosus was supported by nitrogen and phosphorus more than its competitors. Our comparison of fundamental and realized niches suggests that the dominance of particular moss functional groups in fens is governed by a competitive hierarchy altered by different calcium levels. The expansion of calcium-tolerant sphagna into brown-moss fens therefore requires perturbation that weakens competition. Additionally, expansion of calcifugous sphagna to alkaline environments may be stimulated by potassium availability.
ER  -

VICHEROVÁ, Eliška, Michal HÁJEK and Tomáš HÁJEK. Calcium intolerance of fen mosses: physiological evidence, effects of nutrient availability and successional drivers. \textit{Perspectives in Plant Ecology, Evolution and Systematics}. Elsevier, 2015, vol.~17, No~5, p.~347-359. ISSN~1433-8319. Available from: https://dx.doi.org/10.1016/j.ppees.2015.06.005.

Detailed Information on Publication Record