@article{fdi:010086664, title = {{R}evisiting extinction debt through the lens of multitrophic networks and meta-ecosystems}, author = {{B}lanchard, {G}r{\'e}goire and {M}unoz, {F}.}, editor = {}, language = {{ENG}}, abstract = {{T}he concept of extinction debt refers to the time-delayed extinction of species following an environmental change. {P}recisely because of their delayed nature, extinction debts constitute a major challenge for both biodiversity research and conservation. {A}lthough it has received considerable attention and support from theoretical and empirical evidence during the last decades, the concept is still mainly apprehended through a species-based view. {H}owever, our understanding of ecological systems is increasingly enhanced by approaches focusing on ecosystem functioning and species interaction networks. {N}otably, co-extinctions triggered by the loss and disruption of species interactions has received growing interest. {Y}et, the wide spectrum of potential co-extinctions is rarely considered through the lens of transient dynamics. {A} more ecosystem functioning-focused perspective on delayed extinctions is thus needed. {H}ere, we propose to fill this conceptual gap by revisiting the concept of extinction debt in the light of multitrophic networks and meta-ecosystem theories. {W}e emphasize the coupled nature of ecological dynamics across interaction networks within and between ecosystems, which the current view of extinction debts does not fully integrate. {W}e address how the structure of interaction networks and the contrasting tempo of extinction in species, function and interaction can determine co-extinction debts scenarios. {I}mportantly the alteration of specific organisms and ecological processes can trigger ecosystem-level feedbacks and lead to cascading delayed co-extinction dynamics spreading across ecological networks. {W}e argue that such transient dynamics are likely to incur both long-term and remote consequences on biodiversity and ecosystem functioning. {T}hen, we outline the challenges and opportunities for research and conservation emerging from this new perspective on extinction debts.}, keywords = {biotic interactions ; ecological networks ; extinction debt ; functional ; extinction ; meta-ecosystem ; transient dynamics}, booktitle = {}, journal = {{O}ikos}, volume = {2023}, numero = {}, pages = {e09435 [16 ]}, ISSN = {0030-1299}, year = {2023}, DOI = {10.1111/oik.09435}, URL = {https://www.documentation.ird.fr/hor/fdi:010086664}, }