Morphological variability of cushion plant Lyallia kerguelensis (Caryophyllales) in relation to environmental conditions and geography in the Kerguelen Islands: implications for cushion necrosis and climate change

Marchand, Lorène Julia; Tarayre, Michèle; Dorey, Thomas; Rantier, Yann; Hennion, Françoise

doi:10.1007/s00300-020-02768-2

Cited by 4 publications

(2 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Iles Kerguelen face rapid and intense climate change, characterized by an increase of temperature and a decrease of rainfall (Lebouvier et al ., 2011; Favier et al ., 2016; Verfaillie et al ., 2021). Plants in Iles Kerguelen already exhibit signs of stress such as leaf wilting or increased shoot necrosis during dry summer periods (Chapuis et al ., 2004; Frenot et al ., 2006; Marchand et al ., 2021). Previous work evidenced plastic responses in the studied species (Hummel et al ., 2004b; Hennion et al ., 1994; Hennion and Walton, 1997b).…”

Section: Discussionmentioning

confidence: 99%

“…Direct impacts of climate change are already visible in the Kerguelen Islands, with more frequent and more prolonged summer droughts, the rise of the snow line and the drastic reduction of the Cook ice cap (Hennion et al ., 2006; Lebouvier et al ., 2011; Verfaillie et al ., 2015). Plant species in Iles Kerguelen show signs of stress such as leaf wilting or increased shoot necrosis suggesting they are particularly sensitive to ongoing changes (Chapuis et al ., 2004; Frenot et al ., 2006; Marchand et al ., 2021). As the Iles Kerguelen are geographically very isolated, species can hardly migrate to track changing environments in space, and so plants have to respond mainly by plasticity or adaptive evolution (Hoffmann and Sgro, 2011).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Plasticity in plant populations may be constrained by performance costs, complex environments and weakly integrated phenotypes

Hennion,

Labarrere,

Renaudon

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Background and AimsOne response of plants to climate warming is plasticity of traits, but plasticity might come at a cost and might be limited by the integration among traits or by simultaneous shift of another environmental condition such as shading. Empirical studies treating simultaneously such costs and limitations of plasticity across populations or maternal lineages within species, and how they depend on the environmental context remain few.MethodsWe studied three plant species from the sub-Antarctic, a region currently facing one of the fastest warming worldwide. For multiple populations or maternal lineages we identified (i) plasticity by exposing seeds from a given source population to different temperature and light treatments, (ii) performance (photosynthesis or morphological performance) and (iii) morphological integration of traits in young plants.Key ResultsWe found that plants from more plastic source populations performed poorly. Plants from more integrated source populations were more plastic. Exposure to shade rendered plants less plastic to a warming trend. Moreover, simultaneous shading and warming, rather thansoleshading orsolewarming, reduced plant performance.ConclusionsOur results suggest that phenotypic integration of intraspecific lineages surprisingly might favour rather than limit plasticity. However, our results also suggest that plasticity in response to climate warming may be limited by parallel increase in shading from other plants including competitors, and itself does not ensure success due to induced performance costs.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Plasticity in plant populations may be constrained by performance costs, complex environments and weakly integrated phenotypes

Hennion,

Labarrere,

Renaudon

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

Dieback of the cushion plant Silene acaulis at its southern limit of distribution in the Apennines

et al. 2023

View full text Add to dashboard Cite

Ontogenetic shape trajectory of Trichomycterus areolatus varies in response to water velocity environment

et al. 2021

View full text Add to dashboard Cite

Body and head shape among fishes both vary between environments influenced by water velocity and across ontogeny. Although the shape changes associated with variation in average water velocity and ontogeny are well documented, few studies have tested for the interaction between these two variables (i.e., does ontogenetic shape variation differ between velocity environments). We use geometric morphometrics to characterize shape differences in Trichomycterus areolatus, a freshwater catfish found in high and low-velocity environments in Chile. We identify a significant interaction between velocity environment and body size (i.e., ontogeny). Ontogenetic patterns of shape change are consistent with other studies, but velocity environment differentially affects the ontogenetic trajectory of shape development in T. areolatus. Shape change over ontogeny appears more constrained in high-velocity environments compared to low-velocity environments.

show abstract

Morphological variability of cushion plant Lyallia kerguelensis (Caryophyllales) in relation to environmental conditions and geography in the Kerguelen Islands: implications for cushion necrosis and climate change

Cited by 4 publications

References 58 publications

Plasticity in plant populations may be constrained by performance costs, complex environments and weakly integrated phenotypes

Plasticity in plant populations may be constrained by performance costs, complex environments and weakly integrated phenotypes

Dieback of the cushion plant Silene acaulis at its southern limit of distribution in the Apennines

Ontogenetic shape trajectory of Trichomycterus areolatus varies in response to water velocity environment

Contact Info

Product

Resources

About