Margarita Jara Yupanqui (World Languages and Cultures) served as the lead editor of the Letras volume published by the Universidad Nacional Mayor de San Marcos (Lima, Peru), titled "Amazonian Spanish: Studies on the Diversity of Contacts in the Amazon, Toward a Regional Contextualization and the Delimitation of Monolingual Dialects." 

This dossier brings together research on Peruvian Amazonian Spanish, a set of varieties shaped by contact with indigenous languages and profound socio-political transformations. The works compiled here address phonetic, phonological, morphosyntactic, and discursive phenomena, as well as linguistic attitudes and ideologies, with the aim of characterizing the structural and social complexity of these regional dialects. Through methodologies that combine acoustic analysis, spontaneous speech corpora, sociolinguistic interviews, variationist tools, and critical analysis of multimodal discourse, the studies document grammatical innovations and levelling processes typical of bilingualism, as well as practices of identity resistance in the face of the hegemony of standard Spanish.

The volume emphasizes that Amazonian varieties are not deviations from the standard, but fully functional systems whose configurations reveal dynamic processes of interlinguistic convergence, typological substrates, and social agency. It also highlights the urgency of documenting these varieties in the face of the effects of standardization and linguistic discrimination, as well as the need to integrate community perspectives into research. Overall, the dossier raises awareness of the linguistic richness of the Amazon and provides a solid framework for future research that articulates variation, contact, and linguistic justice.