The Talamanca County in Costa Rica has large-scale banana and small-scale plantain production, probably causing pesticide exposure in indigenous children. We explored to what extent different community actors are aware of children's pesticide hazards and how their awareness related to socio-economical and cultural conditions. Methods comprised eight focus groups with fathers and mothers separately, 27 semi-structured interviews to key actors, and field observations. As a whole, the indigenous plantain farmers and banana plantation workers had some general knowledge of pesticides concerning crop protection, but little on acute health effects, and hardly any on exposure routes and pathways, and chronic effects. People expressed vague ideas about pesticide risks. Inter-community differences were related to pesticide technologies used in banana and plantain production, employment status on a multinational plantation versus smallholder status, and gender. Compared to formalized practices on transnational company plantations, where workers reported to feel protected, pesticide handling by plantain smallholders was not perceived as hazardous and therefore no safety precautions were applied. Large-scale monoculture was perceived as one of the most important problems leading to pesticide risks in Talamanca on banana plantations, and also on neighboring small plantain farms extending into large areas. Plantain farmers have adopted use of highly toxic pesticides following banana production, but in conditions of extreme poverty. Aerial spraying in banana plantations was considered by most social actors a major determinant of exposure for the population living nearby these plantations, including vulnerable children. We observed violations of legally established aerial spraying distances. Economic considerations were most mentioned as the underlying reason for the pesticide use: economic needs to obtain the production quantity and quality, and pressure to use pesticides by other economic agents such as middlemen. Risk perceptions were modulated by factors such as people's tasks and positions in the production process, gender, and people's possibilities to define their own social conditions (more fatalistic perceptions among banana workers). The challenge for the future is to combine these insights into improved health risk assessment and management that is culturally adequate for each particular community and agricultural context.
Political ecology pushes back against the apolitical and ahistorical ecologies frequently found in mainstream scientific accounts of nature and the environment, and has increasingly focused on how scientific knowledge is 'socially constructed.' In this article, we argue for political ecological engagement with the highly influential knowledge-to-action (KTA) movement in science about health and the environment. We introduce KTA using results of a survey conducted under the auspices of a Canada-Latin America-Caribbean 'ecosystem approaches to health' (ecohealth) collaboration, and then narrow our focus to a single illustrative ecohealth project, dealing with the health impacts of small-scale gold mining in southwestern Ecuador. We employ an ecology of knowledge framework for integrating insights from science and technology studies, illustrating the interacting actors, material artifacts, institutions and discourses involved in not only the generation but also the application of health-environment science. The origins of ecohealth research in the Americas reflect interacting epistemological and political factors, as sophisticated, complex systemic analyses of health-environment interactions occurred amidst increasing neoliberalization of knowledge production. Simultaneously, corporate actors such as large mining companies influenced both the distribution of healthdamaging environmental conditions in the Americas, and the ways in which they were studied. This analysis motivates our advocacy of specifically political ecologies of health-environment knowledge, in which inequitable power dynamics and non-human actors are foregrounded in studies of the social production and application of science. The political ecology of knowledge framework that we envision would allow for simultaneous consideration of how societal contexts influence scientific knowledge production, and how the resulting knowledge can be better applied to protect the health of communities facing environmental injustice. Key words: ecohealth; mining; praxis; science and technology studies; knowledge-to-action; Canada; Ecuador Résumé L'écologie politique remet en question las explications apolitiques et anhistoriques fréquemment rencontrées dans les compte-rendu scientifiques sur la nature et l'environnement et met de plus en plus l'accent sur la manière dont la connaissance scientifique est socialement construite. Dans cet article, nous soutenons la pertinence de l'écologie politique pour le mouvement « du savoir à l'action », très influent dans les sciences de la santé de l'environnement. Nous présentons la perspective « du savoir à l'action » en nous appuyant sur les résultats d'une enquête menée dans le cadre d'une collaboration Canada-Amérique latine et Caraïbes sur les approches écosystémiques à la santé (écosanté), pour ensuite concentrer notre attention sur un unique projet écosanté, qui porte sur les effets sur la santé de l'extraction de l'or à petite échelle dans le sud-ouest de l'Équateur. Nous employons un cadre conceptuel d'écologi...
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