Abstract
Bryological composition, water chemistry, and environmental factors were characterized on 67 Belgian travertines. We explore the relationship between these environmental factors and the community composition, species richness, or presence of individual species using Redundancy Analysis with Hellinger’s transformation (tb-RDA) or Generalized Linear Models (GLMs). The best variables explaining the community composition are slope, NO 3 , NH 4 , and PO 4 . The species richness is negatively related to canopy cover and PO 4 . Palustriella commutata tends to be more frequent when the slope is steeper and to a lesser degree when the canopy cover is lower. Eucladium verticillatum tends to be slightly more frequent when canopy cover and NH 4 concentrations are lower. Cratoneuron filicinum is more frequent at higher Mg concentrations and Pellia endiviifolia is more frequent at lower PO 4 concentrations and higher NO 3 concentrations. Brachythecium rivulare showed wide ecological amplitude and almost none of the tested environmental factors seem to be related to its presence. The study identifies eutrophication as the main factor responsible for habitat deterioration. Practical indications on the best ways to maintain or to enhance the quality of these petrifying sources are given.
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Claims 8
Claim · model-written summary
Slope and nitrate, ammonium and phosphate best explained bryophyte community composition.
Not reportedDirection
Verbatim
e0“The best variables explaining the community composition are slope, NO 3 , NH 4 , and PO 4 .”
t0“Bryophytes”
Claim · model-written summary
Bryophyte species richness was negatively related to canopy cover and phosphate.
Verbatim
e0“The species richness is negatively related to canopy cover and PO 4 .”
t0“Bryophytes”
Claim · model-written summary
Palustriella commutata was more frequent on steeper slopes and, to a lesser degree, under lower canopy cover.
- Taxon
- Palustriella commutata
_7301.JPG?width=60)
Palustriella falcatae0 - Outcome
- more frequente0
- Direction
- more frequente0
- Setting
- slopee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_7301.JPG?width=500)
Verbatim
e0“Palustriella commutata tends to be more frequent when the slope is steeper and to a lesser degree when the canopy cover is lower.”
Claim · model-written summary
Eucladium verticillatum was slightly more frequent at lower canopy cover and ammonium concentrations.
- Taxon
- Eucladium verticillatum
_3277.JPG?width=60)
Eucladium verticillatume0 - Outcome
- more frequente0
- Direction
- more frequente0
- Setting
- canopy covere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_3277.JPG?width=500)
Verbatim
e0“Eucladium verticillatum tends to be slightly more frequent when canopy cover and NH 4 concentrations are lower.”
Claim · model-written summary
Cratoneuron filicinum was more frequent at higher magnesium concentrations.
- Taxon
- Cratoneuron filicinum
_5782.jpg?width=60)
Cratoneuron filicinume0 - Compound
- Mge0
- Outcome
- more frequente0
- Direction
- more frequente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_5782.jpg?width=500)
Verbatim
e0“Cratoneuron filicinum is more frequent at higher Mg concentrations”
Claim · model-written summary
Pellia endiviifolia was more frequent at lower phosphate and higher nitrate concentrations.
- Taxon
- Pellia endiviifolia
_5726.JPG?width=60)
Apopellia endiviifoliae0 - Compound
- PO 4e0
- Outcome
- more frequente0
- Direction
- more frequente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_5726.JPG?width=500)
Verbatim
e0“Pellia endiviifolia is more frequent at lower PO 4 concentrations and higher NO 3 concentrations.”
Claim · model-written summary
Brachythecium rivulare had wide ecological amplitude, with almost no tested environmental factors related to its presence.
- Taxon
- Brachythecium rivulare
Brachythecium rivularee0 - Outcome
- presencee0
- Setting
- environmental factorse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brachythecium rivulare showed wide ecological amplitude and almost none of the tested environmental factors seem to be related to its presence.”
Claim · model-written summary
The authors identified eutrophication as the main factor in deterioration of the bryophyte habitat.
Verbatim
e0“The study identifies eutrophication as the main factor responsible for habitat deterioration.”
t0“Bryophytes”