Home » Plant community assembly on restrictive gypsum soils

Plant community assembly on restrictive gypsum soils

Do environmental factors influence plant community assembly on restrictive gypsum soils?

Previous studies have shown that plant communities on infertile soils are relatively resistant to climatic variation due to stress tolerance adaptations. However, plant communities in gypsum soil habitats require further investigation. Gypsum outcrops are widespread throughout the world but typically occur in arid and semi-arid ecosystems. The soils of these outcrops are restrictive and impose harsh abiotic conditions on the plants growing in them. Despite this making them an ideal system to analyse community assembly under harsh conditions, questions remain about this process. Specifically, (1) whether arid conditions determine the characteristics of the species in these communities? (2) if the selection of species that assemble under arid conditions is mediated by the ability to grow on gypsum soils, and (3) if this selection of species is related to evolutionarily conserved plant functional traits?

One of eighty-nine 89 gypsum-soil sites studied by Luzuriaga et al. along a 400 km climate gradient from the central to southeastern Iberian Peninsula.

In a new study published in AoBP, Luzuriaga et al. investigated these questions by studying plant community resistance to climatic variation in gypsum soil sites across the Iberian Peninsula. They found perennial communities on gypsum soils to be relatively resistant to changes in precipitation however, temperatures in the hottest month were the main factor responsible for the selection of the species that finally established communities. It should be noted that species adapted to grow on gypsum soils (i.e. gypsophites) dominated plant communities in the hottest locations. These findings suggest that the warmer environmental conditions predicted by global change models will favour gypsum specialists over generalists.

William Salter

William (Tam) Salter is a Postdoctoral Research Fellow in the School of Life and Environmental Sciences and Sydney Institute of Agriculture at the University of Sydney. He has a bachelor degree in Ecological Science (Hons) from the University of Edinburgh and a PhD in plant ecophysiology from the University of Sydney. Tam is interested in the identification and elucidation of plant traits that could be useful for ecosystem resilience and future food security under global environmental change. He is also very interested in effective scientific communication.

Read this in your language

The Week in Botany

On Monday mornings we send out a newsletter of the links that have been catching the attention of our readers on Twitter and beyond. You can sign up to receive it below.

@BotanyOne on Mastodon

Loading Mastodon feed...