Ficetola G.F., Marta S., Guerrieri A., Cantera I., Bonin A., Cauvy-Fraunié S., Ambrosini R., Caccianiga M., Anthelme Fabien, Azzoni R.S., Almond P., Alviz Gazitúa P., Ceballos Lievano J.L., Chand P., Chand Sharma M., Clague J.J., Rapre J.A.C., Compostella C., Cruz Encarnación R., Dangles Olivier, et al. (2024). The development of terrestrial ecosystems emerging after glacier retreat. Nature, 632 (8024), 336-342. ISSN 0028-0836.
Titre du document
The development of terrestrial ecosystems emerging after glacier retreat
Année de publication
2024
Auteurs
Ficetola G.F., Marta S., Guerrieri A., Cantera I., Bonin A., Cauvy-Fraunié S., Ambrosini R., Caccianiga M., Anthelme Fabien, Azzoni R.S., Almond P., Alviz Gazitúa P., Ceballos Lievano J.L., Chand P., Chand Sharma M., Clague J.J., Rapre J.A.C., Compostella C., Cruz Encarnación R., Dangles Olivier, et al.
Source
Nature, 2024,
632 (8024), 336-342 ISSN 0028-0836
The global retreat of glaciers is dramatically altering mountain and high-latitude landscapes, with new ecosystems developing from apparently barren substrates. The study of these emerging ecosystems is critical to understanding how climate change interacts with microhabitat and biotic communities and determines the future of ice-free terrains. Here, using a comprehensive characterization of ecosystems (soil properties, microclimate, productivity and biodiversity by environmental DNA metabarcoding6) across 46 proglacial landscapes worldwide, we found that all the environmental properties change with time since glaciers retreated, and that temperature modulates the accumulation of soil nutrients.
The richness of bacteria, fungi, plants and animals increases with time since deglaciation, but their temporal patterns differ. Microorganisms colonized most rapidly in the first decades after glacier retreat, whereas most macroorganisms
took longer. Increased habitat suitability, growing complexity of biotic interactions and temporal colonization all contribute to the increase in biodiversity over time. These processes also modify community composition for all the groups of
organisms. Plant communities show positive links with all other biodiversity components and have a key role in ecosystem development. These unifying patterns provide new insights into the early dynamics of deglaciated terrains and
highlight the need for integrated surveillance of their multiple environmental properties.
Plan de classement
Sciences du milieu [021]
;
Hydrologie [062]
;
Géologie et formations superficielles [064]
;
Etudes, transformation, conservation du milieu naturel [082]
Localisation
Fonds IRD [F B010091627]
Identifiant IRD
fdi:010091627
