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Large scale differentiation and population dynamics in tundra plants and vegetation

Jonsdottir, Ingibjörg S.; Virtanen, Risto and Kärnefelt, Ingvar LU (1999) In Ambio 28(3). p.230-238
Abstract
The inclusion of the botanical projects in the Swedish-Russian Tundra Ecology -94 expedition provided new information on the ecology of tundra plants. The vegetation patterns on different scales were documented, and interpreted as the result of a complex interaction with environmental factors. The distribution of fruticose lichens was studied, and it was shown that these lichens rely on different modes of asexual reproduction for their dispersal. Extreme old genet ages were demonstrated for species of Carex and there were similar strong indications for lichens. Populations of Carex were genetically diverse in spite of old ages and often low levels of flowering. Large differences between sites in flowering and vegetative ramet production... (More)
The inclusion of the botanical projects in the Swedish-Russian Tundra Ecology -94 expedition provided new information on the ecology of tundra plants. The vegetation patterns on different scales were documented, and interpreted as the result of a complex interaction with environmental factors. The distribution of fruticose lichens was studied, and it was shown that these lichens rely on different modes of asexual reproduction for their dispersal. Extreme old genet ages were demonstrated for species of Carex and there were similar strong indications for lichens. Populations of Carex were genetically diverse in spite of old ages and often low levels of flowering. Large differences between sites in flowering and vegetative ramet production (vegetative reproduction) in Carex reflected a asynchronous between-year population fluctuation, which was related to cyclic lemming populations and climate. Important gaps in our knowledge of the ecology of tundra plants are pointed out, some of which will hopefully be resolved during the tundra expedition, Tundra Northwest 1999. (Less)
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organization
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Contribution to journal
publication status
published
subject
in
Ambio
volume
28
issue
3
pages
230 - 238
publisher
Springer
ISSN
0044-7447
language
English
LU publication?
yes
id
28f0894f-ec4a-4b78-9487-794ad27f934f (old id 2155867)
alternative location
http://www.jstor.org/stable/4314887
date added to LUP
2011-09-16 12:12:28
date last changed
2016-04-15 18:46:06
@article{28f0894f-ec4a-4b78-9487-794ad27f934f,
  abstract     = {The inclusion of the botanical projects in the Swedish-Russian Tundra Ecology -94 expedition provided new information on the ecology of tundra plants. The vegetation patterns on different scales were documented, and interpreted as the result of a complex interaction with environmental factors. The distribution of fruticose lichens was studied, and it was shown that these lichens rely on different modes of asexual reproduction for their dispersal. Extreme old genet ages were demonstrated for species of Carex and there were similar strong indications for lichens. Populations of Carex were genetically diverse in spite of old ages and often low levels of flowering. Large differences between sites in flowering and vegetative ramet production (vegetative reproduction) in Carex reflected a asynchronous between-year population fluctuation, which was related to cyclic lemming populations and climate. Important gaps in our knowledge of the ecology of tundra plants are pointed out, some of which will hopefully be resolved during the tundra expedition, Tundra Northwest 1999.},
  author       = {Jonsdottir, Ingibjörg S. and Virtanen, Risto and Kärnefelt, Ingvar},
  issn         = {0044-7447},
  language     = {eng},
  number       = {3},
  pages        = {230--238},
  publisher    = {Springer},
  series       = {Ambio},
  title        = {Large scale differentiation and population dynamics in tundra plants and vegetation},
  volume       = {28},
  year         = {1999},
}