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Snow cover consiste...
Snow cover consistently affects growth and reproduction of Empetrum hermaphroditum across latitudinal and local climatic gradients
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- Bienau, Miriam J. (författare)
- Justus-Liebig University, Giessen, Germany
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- Hattermann, Dirk (författare)
- University of Marburg, Marburg, Germany
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- Kroencke, Michael (författare)
- University of Applied Sciences Bremen, Bremen, Germany
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- Kretz, Lena (författare)
- Justus-Liebig University, Giessen, Germany
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- Otte, Annette (författare)
- Justus-Liebig University, Giessen, Germany
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- Eiserhardt, Wolf L. (författare)
- Norwegian University of Science and Technology, Trondheim, Norway
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- Milbau, Ann (författare)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum,Umea University
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- Graae, Bente J. (författare)
- Norwegian University of Science and Technology, Trondheim, Norway
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- Durka, Walter (författare)
- Helmholtz Centre for Environmental Research UFZ, Halle (Saale), Germany
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- Eckstein, Rolf Lutz (författare)
- Justus-Liebig University, Giessen, Germany
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(creator_code:org_t)
- 2014-09-04
- 2014
- Engelska.
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Ingår i: Alpine Botany. - : Springer. - 1664-2201 .- 1664-221X. ; 124:2, s. 115-129
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Arctic ecosystems face strong changes in snow conditions due to global warming. In contrast to habitat specialists, species occupying a wide range of microhabitats under different snow conditions may better cope with such changes. We studied how growth and reproduction of the dominant dwarf shrub Empetrum hermaphroditum varied among three habitat types differing in winter snow depth and summer irradiation, and whether the observed patterns were consistent along a local climatic gradient (sub-continental vs. sub-oceanic climates) and along a latitudinal gradient (northern Sweden vs. central Norway). Habitat type explained most of the variation in growth and reproduction. Shoots from shallow snow cover and high summer irradiation habitats had higher numbers of flowers and fruits, lower ramet heights, shorter shoot segments, lower numbers of lateral shoots and total biomass but higher leaf density and higher relative leaf allocation than shoots from habitats with higher snow depth and lower summer irradiation. In addition, biomass, leaf allocation and leaf life expectancy were strongly affected by latitude, whereas local climate had strong effects on seed number and seed mass. Empetrum showed high phenotypic trait variation, with a consistent match between local habitat conditions and its growth and reproduction. Although study areas varied strongly with respect to latitude and local climatic conditions, response patterns of growth and reproduction to habitats with different environmental conditions were consistent. Large elasticity of traits suggests that Empetrum may have the potential to cope with changing snow conditions expected in the course of climate change.
Ämnesord
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- Empetrum hermaphroditum
- Snow cover gradient
- Growth response
- Biology
- Biologi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Bienau, Miriam J ...
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Hattermann, Dirk
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Kroencke, Michae ...
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Kretz, Lena
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Otte, Annette
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Eiserhardt, Wolf ...
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visa fler...
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Milbau, Ann
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Graae, Bente J.
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Durka, Walter
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Eckstein, Rolf L ...
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