Full text of this article is only available in PDF format.

Lina R. Steinke, Andrea C. Premoli (email), Cintia P. Souto, Mikael Hedrén

Adaptive and neutral variation of the resprouter Nothofagus antarctica growing in distinct habitats in north-western Patagonia

Steinke L. R., Premoli A. C., Souto C. P., Hedrén M. (2008). Adaptive and neutral variation of the resprouter Nothofagus antarctica growing in distinct habitats in north-western Patagonia. Silva Fennica vol. 42 no. 2 article id 251. https://doi.org/10.14214/sf.251

Abstract

N. antarctica occurs in the widest range of habitat types among all South American Notho–fagus. The aim of this study is to investigate adaptive responses by variation in morphological (tree form and leaf characters), and environmental traits (soils) of the polymorphic N. ant–arctica. Also we analyze the effect of genetic drift and limited gene flow in such predominantly apomict by means of neutral variation (isozymes). We studied four potentially different morphological variants each associated with a separate habitat 1) an arboreal variant growing in optimal environments; 2) a sparsely branched variant of temporarily flooded basins or flats; 3) a dwarf variant growing at high elevation, and 4) a shrub-like variant inhabiting matorral environments. The study was restricted latitudinally to Nahuel Huapi National Park, Argentina. For each habitat type we investigated two sites. Nothofagus antarctica shows locally occurring phenotypes. The forest and the high elevation variants were morphologically distinct from the matorral and the basin types. The latter were undistinguishable except for more profuse branching in the matorral type as a result of sprouting due to recent fires. Isozyme evidence indicates a great deal of within-population genetic diversity which is maintained by outcrossing and significant among-site divergence (FST = 18%) that reflects limited gene flow.The apparent high phenotypic and genetic variability in N. antarctica is due to both plasticity and genotypic effects as a result of stable population structure and long periods of isolation which may be reinforced by selection at diverse biotopes.

Keywords
isozymes; morphological variation; leaf traits; South America; temperate forest

Author Info
  • Steinke, Plant Ecology and Systematics, Lund University, Ecology Department, 223 62 Lund, Sweden E-mail lks@nn.se
  • Premoli, Universidad Nacional del Comahue, Laboratorio Ecotono – CRUB, Quintral 1250, 8400 Bariloche, Argentina E-mail apremoli@crub.uncoma.edu.ar (email)
  • Souto, Universidad Nacional del Comahue, Laboratorio Ecotono – CRUB, Quintral 1250, 8400 Bariloche, Argentina E-mail cps@nn.ar
  • Hedrén, Plant Ecology and Systematics, Lund University, Ecology Department, 223 62 Lund, Sweden E-mail mh@nn.se

Received 29 May 2007 Accepted 2 January 2008 Published 31 December 2008

Views 4807

Available at https://doi.org/10.14214/sf.251 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Send to email
Manninen O. H., Peltola R. (2013) Effects of picking methods on the berry producti.. Silva Fennica vol. 47 no. 3 article id 972 (remove) | Edit comment
Väisänen E., Hari P. et al. (1977) Annual growth level of some plant species as a f.. Silva Fennica vol. 11 no. 4 article id 4980 (remove) | Edit comment
Kaakkurivaara T., Vuorimies N. et al. (2015) Applicability of portable tools in assessing the.. Silva Fennica vol. 49 no. 2 article id 1239 (remove) | Edit comment
Monserud R. A., Denissenko O. V. et al. (1996) Change in Siberian phytomass predicted for globa.. Silva Fennica vol. 30 no. 2–3 article id 5586 (remove) | Edit comment
Kankare V., Luoma V. et al. (2019) Assessing feasibility of the forest trafficabili.. Silva Fennica vol. 53 no. 3 article id 10197 (remove) | Edit comment
Uusitalo J., Kokko S. et al. (2004) The effect of two bucking methods on Scots pine .. Silva Fennica vol. 38 no. 3 article id 417 (remove) | Edit comment
Ceriani-Nakamurakare E., Ramos S. et al. (2018) Metagenomic approach of associated fungi with Silva Fennica vol. 52 no. 3 article id 9940 (remove) | Edit comment
Heliövaara K., (1986) Occurrence of Petrova resinella (Lepidoptera, To.. Silva Fennica vol. 20 no. 2 article id 5264 (remove) | Edit comment
Stenman V., Kangas A. et al. (2023) Upper stem diameter and volume prediction strate.. Silva Fennica vol. 57 no. 3 article id 23021 (remove) | Edit comment
Palosuo V. J., (1979) MERA programmes in the Finnish forestry Acta Forestalia Fennica vol. 0 no. 165 article id 7599 (remove) | Edit comment
Niskanen A., (1999) The financial and economic profitability of fiel.. Silva Fennica vol. 33 no. 2 article id 664 (remove) | Edit comment
Rantonen H., Päivänen J. (1989) Silvicultural condition of tree stands after thi.. Silva Fennica vol. 23 no. 1 article id 5370 (remove) | Edit comment
Bārdule A., Jūrmalis E. et al. (2020) Use of retail market data to assess prices and f.. Silva Fennica vol. 54 no. 3 article id 10341 (remove) | Edit comment
Pohjonen V., (1974) Effect of spacing on the first-year yield and he.. Silva Fennica vol. 8 no. 2 article id 4901 (remove) | Edit comment
Steinke L. R., Premoli A. C. et al. (2008) Adaptive and neutral variation of the resprouter.. Silva Fennica vol. 42 no. 2 article id 251 (remove) | Edit comment
Your search results