WINNING THE HEARTS AND MINDS OF FARMERS: INSTITUTIONALIZED INNOVATION DIFFUSION IN SRI LANKA

Classical diffusion research, both in geography and sociology, received considerable criticism in the 1970s and 1980s, but after that the diffusion debate has faded away. At the same time, one of the earliest contributors to diffusion research, Gabriel Tarde, is now attracting the attention of both geographers and sociologists. Drawing on earlier experiences with agricultural extension and the Green Revolution, this Tarde‐inspired article aims to revitalize the diffusion debate through an ethnographic case study of extension practices in Hambantota District, Sri Lanka. The study is based on field material collected between 2009 and 2011, which includes semi‐structured interviews with representatives from various spread agencies – government agricultural instructors, NGOs, social enterprises, and the inorganic industry – as well as with farmers and other key informants. Following the recent work of Nigel Thrift, it is argued that such an approach to the study of innovation diffusion can be a way of uncovering “the political economy of propensity”. The article suggests that a return to Tarde should not lead researchers back into naïve diffusionism, or towards a position that blames traditionalist farmers for non‐diffusion. Non‐human actors can also exhibit resistance and sociality: innovations travel through a landscape which is both human and non‐human, and the spread of organic farming practices is configured by both bonds of trust among farmers and bonds of chemicals in the soil. Furthermore, it contends that future research may interrogate the ways in which the very medium of diffusion is being reconfigured, following actors' institutionalization of innovation diffusion methods.     

New specimens of Mourasuchus (Alligatoroidea,Caimaninae) from the Miocene of Brazil and Bolivia and their taxonomic and morphological implications

Cidade, G.M., Souza-Filho, J.P., Hsiou, A.S., Brochu, C.A., & Riff, D., 18 March 2019. New specimens of Mourasuchus (Alligatoroidea, Caimaninae) from the Miocene of Brazil and Bolivia and their taxonomic and anatomic implications. Alcheringa 43, 261–278. ISSN 0311-5518.

Mourasuchus is one of the most peculiar crocodylians of all time, showing an unusual ‘duck-faced’ rostrum with thin, gracile mandibles. It includes four species restricted to the South American Miocene. Here, we describe ten late Miocene specimens of Mourasuchus, nine from the Solimões Formation of Brazil and one from Bolivia. All specimens are assigned to M. arendsi, but this assignment may change as the diversity and relationships within Mourasuchus are better understood. We also discuss several issues pertinent to the morphology of Mourasuchus: the presence of a braincase neomorph (the laterocaudal bridge), hypotheses about sexual dimorphism, the function of the squamosal ‘horns’ the presence of possible thermoregulatory functions in the genus. Additionally, the paleogeographic distribution of Mourasuchus in the Miocene of South America is also discussed.

Giovanne M. Cidade* [giovannecidade@hotmail.com], Universidade de São Paulo Campus de Ribeirao Preto, Biologia, Avenida Bandeirantes 3900, Ribeirao Preto, 14040-900, Brazil; Jonas P. Souza-filho [jpdesouzafilho@hotmail.com], Universidade Federal do Acre, Departamento de Ciências da Natureza, Campus Universitário, UFAC, BR 364, Km 4, Distrito industrial, CEP 69915-900, Rio Branco, Acre, Brazil; Annie Schmaltz Hsiou [anniehsiou@ffclrp.usp.br], Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Departamento de Biologia, Avenida dos Bandeirantes, 3900, Ribeirão Preto, 14040-901, Brazil; Christopher A. Brochu [chris-brochu@uiowa.edu], University of Iowa, Iowa City, IA 52245, USA; Douglas Riff [driff2@gmail.com], Universidade Federal de Uberlandia, Uberlandia, 38400902, Brazil.