Arctic and subarctic terrestrial ecosystems are facing important ecological changes in response to climate shifts. Repeated aerial photograph comparisons and Normalized Difference Vegetation Index (NDVI, a proxy of primary production) analyses derived from satellite images reveal widespread yet heterogenous greening of the Arctic and Subarctic (AMAP, 2021), which in turns impacts other biotic and abiotics component of the landscape. However, the consequences of these changes are diverse among species and ecosystems, which leads to potential disruptions of trophic interactions. In this context, it becomes necessary to increase our understanding of the effects of climate change at each level of organization, from the moleculome to the ecosystem, as well as between different ecosystems.