Cristin-resultat-ID: 1972501
Sist endret: 11. februar 2022, 16:32
NVI-rapporteringsår: 2021
Resultat
Vitenskapelig artikkel
2021

Divergent responses of functional diversity to an elevational gradient for vascular plants, bryophytes and lichens

Bidragsytere:
  • Johan Asplund
  • Kristel van Zuijlen
  • Ruben Erik Roos
  • Tone Birkemoe
  • Kari Klanderud
  • Simone I. Lang
  • mfl.

Tidsskrift

Journal of Vegetation Science (JVS)
ISSN 1100-9233
e-ISSN 1654-1103
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Trykket: 2022
Volum: 33
Hefte: 1
Artikkelnummer: e13105
Open Access

Importkilder

Scopus-ID: 2-s2.0-85125420313

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Tittel

Divergent responses of functional diversity to an elevational gradient for vascular plants, bryophytes and lichens

Sammendrag

Question: Cold environments are stressful for vascular plants, and stress-tolerant non-vascular photoautotrophs, e.g. bryophytes and lichens, become relatively more important as competition from vascular plants decreases towards higher elevations. Under increasingly stressful climatic conditions, species assembly of vascular plants is commonly driven more by environmental filtering, and abiotic constraints may lead to increased similarity between species and thus low functional diversity. Because bryophytes and lichens are less constrained by harsh environments, environmental filtering may be less strong. Instead, reduced competition from vascular plants can potentially free up niche space for non-vascular vegetation. Therefore, we hypothesized that functional diversity of vascular plants, bryophytes and lichens are likely to show contrasting responses to elevation. Location: Finse Alpine Research Centre, Southern Norway. Methods: We utilized measurements of species abundance and functional traits of the three groups along a 500-m elevational gradient in alpine southern Norway and calculated multi-trait and single-trait functional dispersion. Results: Functional diversity of vascular plants declined with elevation, indicating increased environmental filtering. By contrast, functional diversity of lichens and bryophytes increased along the same gradient, suggesting they are less exposed to environmental filtering, in line with our hypothesis. Instead, they likely benefit from the lower abundance of vascular plants at higher elevation. Conclusions: Our findings suggest that different photoautotroph groups vary in how they respond to the same environmental gradient, which may contribute to contrasting community assembly processes across groups. These divergent responses likely occur because non-vascular vegetation differs from vascular plants in terms of nutrient acquisition and water economy strategies, meaning that they respond differently to the same factors. This highlights the need to explicitly consider bryophytes and lichens in community-level studies whenever these groups are abundant.

Bidragsytere

Johan Asplund

  • Tilknyttet:
    Forfatter
    ved Miljøvitenskap og naturforvaltning ved Norges miljø- og biovitenskapelige universitet

Kristel van Zuijlen

  • Tilknyttet:
    Forfatter
    ved Eidg. Forschungsanstalt für Wald, Schnee und Landschaft Observation WSL
  • Tilknyttet:
    Forfatter
    ved Miljøvitenskap og naturforvaltning ved Norges miljø- og biovitenskapelige universitet

Ruben Erik Roos

  • Tilknyttet:
    Forfatter
    ved Miljøvitenskap og naturforvaltning ved Norges miljø- og biovitenskapelige universitet

Tone Birkemoe

  • Tilknyttet:
    Forfatter
    ved Miljøvitenskap og naturforvaltning ved Norges miljø- og biovitenskapelige universitet

Kari Klanderud

  • Tilknyttet:
    Forfatter
    ved Miljøvitenskap og naturforvaltning ved Norges miljø- og biovitenskapelige universitet
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