Cristin-resultat-ID: 1326114
Sist endret: 30. september 2017 13:57
NVI-rapporteringsår: 2016
Resultat
Vitenskapelig artikkel
2016

Biomass partitioning in grassland plants along independent gradients in temperature and precipitation

Bidragsytere:
  • Olav Skarpaas
  • Eric Pierre F Meineri
  • Tessa Bargmann
  • Christine Pøtsch
  • Joachim Paul Töpper og
  • Vigdis Vandvik

Tidsskrift

Perspectives in plant ecology, evolution and systematics
ISSN 1433-8319
e-ISSN 1618-0437
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2016
Volum: 19
Sider: 1 - 11

Beskrivelse Beskrivelse

Tittel

Biomass partitioning in grassland plants along independent gradients in temperature and precipitation

Sammendrag

How plants allocate biomass to different parts strongly affects vegetation dynamics and ecosystem processes and services such as productivity and carbon storage. We tested the hypothesis that plant size explains the majority of variation in the size of plant parts (as predicted by allometric partitioning theory, APT) and that additional variation is explained by optimal responses for a given individual reproductive state and environment (as predicted by optimal partitioning theory, OPT) for alpine-lowland species pairs from three genera of grassland plants (Veronica, Viola and Carex) sampled along orthogonal gradients in temperature and precipitation. We found general patterns of allometric scaling (allometric exponents) of roots, stems, leaves and flowers, more or less as predicted by APT, and these patterns remained fairly constant across temperature and precipitation gradients. In contrast, basic allocation (allometric coefficients) was clearly related to climate, such as less allocation to leaves but more to roots, stems and flowers with increasing temperatures, in accordance with OPT. Furthermore, our results show that basic allocation is related to habitat affinity (alpine, lowland) and individual life-history states (reproductive or not) and that there is greater variability in small plants, which suggests that biomass partitioning theory should consider both the life-history and ecology of small plants to accurately predict climate-related grassland plant allocation and its implications. © 2016 Elsevier GmbH. All rights reserved. Allocation Allometric partitioning theory Optimal partitioning theory Climate change Temperature Precipitation Alpine plants

Bidragsytere

Olav Skarpaas

  • Tilknyttet:
    Forfatter
    ved NINA Oslo ved Norsk institutt for naturforskning

Eric Pierre F Meineri

  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap ved Universitetet i Bergen
  • Tilknyttet:
    Forfatter
    ved Stockholms universitet

Tessa Bahiga Bargmann

Bidragsyterens navn vises på dette resultatet som Tessa Bargmann
  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap ved Universitetet i Bergen

Christine Pøtsch

  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap ved Universitetet i Bergen

Joachim Paul Töpper

  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap ved Universitetet i Bergen
  • Tilknyttet:
    Forfatter
    ved Institutt for miljø- og naturvitskap ved Høgskulen på Vestlandet
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