Ramet demography in a ring-forming clonal sedge
(2003) In Journal of Ecology 91(5). p.847-854- Abstract
- 1 In a calcareous dry grassland community in central Europe genets of the clonal sedge Carex humilis form very distinct rings of densely aggregated ramets. As genet growth form is generated by ramet population dynamics, ramet demography must be studied in order to understand how rings develop. We analysed how ramet demography in C. humilis depends on ramet position within the ring and how this is linked to ramet size. 2 The per ramet population growth rate was > 1 at the periphery of rings but < 1 in the interior, meaning that the population increases at the periphery but decreases in the interior. The population growth rate differed mainly because ramets were smaller in the interior and because smaller ramets produced fewer... (More)
- 1 In a calcareous dry grassland community in central Europe genets of the clonal sedge Carex humilis form very distinct rings of densely aggregated ramets. As genet growth form is generated by ramet population dynamics, ramet demography must be studied in order to understand how rings develop. We analysed how ramet demography in C. humilis depends on ramet position within the ring and how this is linked to ramet size. 2 The per ramet population growth rate was > 1 at the periphery of rings but < 1 in the interior, meaning that the population increases at the periphery but decreases in the interior. The population growth rate differed mainly because ramets were smaller in the interior and because smaller ramets produced fewer vegetative ramets. It is unlikely that the smaller ramet size is caused by negative density dependence, interspecific competition, internal control or resource depletion. 3 The study covered four growing seasons and we found considerable variation in ramet demography between years. The net result for the 4 years was that the total number of C. humilis ramets in the population increased. However, both production of vegetative ramets and ramet size decreased during the study period and if this trend continues population size will instead decrease. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/300138
- author
- Wikberg, Sofie LU and Svensson, BM
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- type, phalanx, dry calcareous grassland, Carex humilis, central die-back, ramet population growth rate
- in
- Journal of Ecology
- volume
- 91
- issue
- 5
- pages
- 847 - 854
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000185446200012
- scopus:0141993508
- ISSN
- 1365-2745
- DOI
- 10.1046/j.1365-2745.2003.00817.x
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Plant Ecology and Systematics (Closed 2011) (011004000)
- id
- bf0780ae-15b5-4489-a244-32868d5efde0 (old id 300138)
- date added to LUP
- 2016-04-01 12:29:09
- date last changed
- 2022-01-27 05:43:13
@article{bf0780ae-15b5-4489-a244-32868d5efde0,
abstract = {{1 In a calcareous dry grassland community in central Europe genets of the clonal sedge Carex humilis form very distinct rings of densely aggregated ramets. As genet growth form is generated by ramet population dynamics, ramet demography must be studied in order to understand how rings develop. We analysed how ramet demography in C. humilis depends on ramet position within the ring and how this is linked to ramet size. 2 The per ramet population growth rate was > 1 at the periphery of rings but < 1 in the interior, meaning that the population increases at the periphery but decreases in the interior. The population growth rate differed mainly because ramets were smaller in the interior and because smaller ramets produced fewer vegetative ramets. It is unlikely that the smaller ramet size is caused by negative density dependence, interspecific competition, internal control or resource depletion. 3 The study covered four growing seasons and we found considerable variation in ramet demography between years. The net result for the 4 years was that the total number of C. humilis ramets in the population increased. However, both production of vegetative ramets and ramet size decreased during the study period and if this trend continues population size will instead decrease.}},
author = {{Wikberg, Sofie and Svensson, BM}},
issn = {{1365-2745}},
keywords = {{type; phalanx; dry calcareous grassland; Carex humilis; central die-back; ramet population growth rate}},
language = {{eng}},
number = {{5}},
pages = {{847--854}},
publisher = {{Wiley-Blackwell}},
series = {{Journal of Ecology}},
title = {{Ramet demography in a ring-forming clonal sedge}},
url = {{http://dx.doi.org/10.1046/j.1365-2745.2003.00817.x}},
doi = {{10.1046/j.1365-2745.2003.00817.x}},
volume = {{91}},
year = {{2003}},
}