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Om flydeevnen hos frugter af Ræve-Star (Carex vulpina) og skovengenes forsvinden i Danmark

Bruun, Hans Henrik LU (2009) In Flora og Fauna 114(3-4). p.73-76
Abstract
The buoyancy of fruits (nutlets in utricles) of the marsh-inhabiting True

Fox Sedge (Carex vulpina) was tested experimentally in stagnant water.

Only 16 % of the seeds had sunk when the experiment was terminated

after 284 days. Seeds did not germinate while floating, but remained fully

viable (average 76 % germination for both floating and sunken seeds). For

comparison, fruits of the grassland species Small-fruited Prickly-sedge

(Carex muricata ssp. pairae) were treated similarly. Most of those seeds

had sunk after three days, with only 4 % still floating after 115 days. The

results suggest that regional dynamics of Carex vulpina may be dependent

on regular... (More)
The buoyancy of fruits (nutlets in utricles) of the marsh-inhabiting True

Fox Sedge (Carex vulpina) was tested experimentally in stagnant water.

Only 16 % of the seeds had sunk when the experiment was terminated

after 284 days. Seeds did not germinate while floating, but remained fully

viable (average 76 % germination for both floating and sunken seeds). For

comparison, fruits of the grassland species Small-fruited Prickly-sedge

(Carex muricata ssp. pairae) were treated similarly. Most of those seeds

had sunk after three days, with only 4 % still floating after 115 days. The

results suggest that regional dynamics of Carex vulpina may be dependent

on regular flooding of its habitats; and that the strong restrictions on

natural meadow hydrology – by forestry and agriculture – is one reason for

the rarity of the species. (Less)
Please use this url to cite or link to this publication:
author
organization
alternative title
On hydrochorous seed dispersal in Carex vulpina and the demise of forest meadows in Denmark
publishing date
type
Contribution to specialist publication or newspaper
publication status
published
subject
keywords
seed buoyancy, metapopulation dynamics, Flood meadow conservation
categories
Popular Science
in
Flora og Fauna
volume
114
issue
3-4
pages
73 - 76
publisher
Naturhistorisk Forening for Jylland
ISSN
0015-3818
language
Danish
LU publication?
yes
id
db59458e-2800-4ed3-9684-7014bf07faf9 (old id 1429818)
date added to LUP
2009-06-29 13:30:32
date last changed
2016-04-16 01:59:16
@misc{db59458e-2800-4ed3-9684-7014bf07faf9,
  abstract     = {The buoyancy of fruits (nutlets in utricles) of the marsh-inhabiting True<br/><br>
Fox Sedge (Carex vulpina) was tested experimentally in stagnant water.<br/><br>
Only 16 % of the seeds had sunk when the experiment was terminated<br/><br>
after 284 days. Seeds did not germinate while floating, but remained fully<br/><br>
viable (average 76 % germination for both floating and sunken seeds). For<br/><br>
comparison, fruits of the grassland species Small-fruited Prickly-sedge<br/><br>
(Carex muricata ssp. pairae) were treated similarly. Most of those seeds<br/><br>
had sunk after three days, with only 4 % still floating after 115 days. The<br/><br>
results suggest that regional dynamics of Carex vulpina may be dependent<br/><br>
on regular flooding of its habitats; and that the strong restrictions on<br/><br>
natural meadow hydrology – by forestry and agriculture – is one reason for<br/><br>
the rarity of the species.},
  author       = {Bruun, Hans Henrik},
  issn         = {0015-3818},
  keyword      = {seed buoyancy,metapopulation dynamics,Flood meadow conservation},
  language     = {dan},
  number       = {3-4},
  pages        = {73--76},
  publisher    = {Naturhistorisk Forening for Jylland},
  series       = {Flora og Fauna},
  title        = {Om flydeevnen hos frugter af Ræve-Star (Carex vulpina) og skovengenes forsvinden i Danmark},
  volume       = {114},
  year         = {2009},
}