Abstract
Few investigations deal with the subterranean phytomass in fens (minerotrophic peatlands), their results differing widely. This study was carried out in a “rich fen” in central Sweden, and involved excavation of peat monoliths, depth‐sectioning and hand‐sorting as to species, type of organ, and living or dead condition. The below‐ground living phytomass was large, over 4 kg m −2 in each of two sample plots, being no <97–96% in the dominants, Carex limosa and C. lasiocarpa , 89% on average in Menyanthes trifoliata , and c. 93% for all species. Carex limosa had its rhizome maximum slightly higher than C. lasiocarpa , but a greater part of its roots penetrated deeper. For Menyanthes , also net annual production above and below ground was estimated. The subterranean phytomass decreased with depth, but living roots were found even at 42 cm. The recognizable necromass did not decrease with depth. These recent constituents would render a very unequal age to the peat. The imbalance between the small green aerial phytomass and the much greater subterranean phytomass was emphasized. It could be related to a relatively very great translocation of photosynthates from above to below ground, and/or to longevity of below‐ground organs, the latter at least in Menyanthes.
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Claims 12
Claim · model-written summary
The below-ground living phytomass was large, over 4 kg m-2 in each of two sample plots.
Not reportedTaxon
Verbatim
t0“in a fen”
e0“living phytomass was large”
e1“over 4 kg m −2 in each of two sample plots”
Claim · model-written summary
In Carex limosa, the living phytomass was below ground in between 96 and 97 percent or more.
- Taxon
- Carex limosa
Carex limosae1 - Outcome
- living phytomasse0
- Value
- 97–96%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“living phytomass was large”
e1“no <97–96% in the dominants, Carex limosa and C. lasiocarpa”
Claim · model-written summary
In C. lasiocarpa, the living phytomass was below ground in between 96 and 97 percent or more.
- Taxon
- C. lasiocarpa
Carex lasiocarpae1 - Outcome
- living phytomasse0
- Value
- 97–96%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“living phytomass was large”
e1“no <97–96% in the dominants, Carex limosa and C. lasiocarpa”
Claim · model-written summary
In Menyanthes trifoliata, 89% of the living phytomass was below ground on average.
- Taxon
- Menyanthes trifoliata
_Menyanthes_trifoliata_-_Jardin_Botanique_Henri_GAUSSEN.jpg?width=60)
Menyanthes trifoliatae1 - Outcome
- living phytomasse0
- Value
- 89%e1
- Qualifier
- on averagee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Menyanthes_trifoliata_-_Jardin_Botanique_Henri_GAUSSEN.jpg?width=500)
Verbatim
e0“living phytomass was large”
e1“89% on average in Menyanthes trifoliata”
Claim · model-written summary
About 93% of the living phytomass of all species was below ground.
Verbatim
e0“living phytomass was large”
e1“c. 93% for all species”
Claim · model-written summary
Carex limosa had its rhizome maximum slightly higher than C. lasiocarpa.
- Taxon
- Carex limosaCarex limosae0
- Outcome
- rhizome maximume0
- Direction
- highere0
- Comparator
- C. lasiocarpae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carex limosa had its rhizome maximum slightly higher than C. lasiocarpa”
Claim · model-written summary
A greater part of the roots of Carex limosa penetrated deeper than those of C. lasiocarpa.
- Taxon
- Carex limosaCarex limosae0
- Outcome
- a greater part of its roots penetrated deepere0
- Comparator
- C. lasiocarpae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carex limosa had its rhizome maximum slightly higher than C. lasiocarpa , but a greater part of its roots penetrated deeper”
Claim · model-written summary
The subterranean phytomass decreased with depth.
Not reportedTaxon
Verbatim
e0“The subterranean phytomass decreased with depth”
Claim · model-written summary
Living roots were found even at 42 cm depth.
Not reportedTaxonDirection
Verbatim
e0“living roots were found even at 42 cm”
Claim · model-written summary
The recognizable necromass did not decrease with depth.
Not reportedTaxon
Verbatim
e0“The recognizable necromass did not decrease with depth”
Claim · model-written summary
The study emphasized an imbalance between the small green aerial phytomass and the much greater subterranean phytomass.
- Outcome
- imbalance between the small green aerial phytomass and the much greater subterranean phytomasse0
Not reportedTaxon
Verbatim
e0“The imbalance between the small green aerial phytomass and the much greater subterranean phytomass”
Claim · model-written summary
The authors suggest the imbalance could be related to a relatively very great translocation of photosynthates from above to below ground.
- Outcome
- imbalancee0
- Qualifier
- relatively very great translocation of photosynthates from above to below grounde1
Not reportedTaxon
Verbatim
e0“The imbalance”
e1“a relatively very great translocation of photosynthates from above to below ground”