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Agroforestry has been increasingly recognized as a key example of agroecological praxis contributing to the sustainable intensification of food production while providing a number of additional benefits to society. However, a quantitative synthesis of the impact of agroforestry on soil health and associated ecosystem services in the humid and sub-humid tropics is still lacking. The objective of this study was to quantify the contribution of agroforestry practices to soil-mediated ecosystem services, specifically, regulation of soil erosion, storage of soil organic carbon (SOC) and nitrogen (N), availability of soil N and phosphorus (P) to crops, and alleviation of soil acidity across the humid and sub-humid tropics. The analysis demonstrated that agroforestry can reduce soil erosion rates by 50 % compared to crop monocultures. This finding is supported by higher infiltration rates, lower runoff, higher proportion of soil macroggregates, and greater stability of soil structure under agroforestry. SOC increased by 21 %, N storage increased by 13 %, available N by 46 % and available P by 11 % while soil pH increased by 2% under agroforestry compared to crop monocultures. We conclude that agroforestry can make significant contributions to provision of soil-mediated ecosystem services in the humid and sub-humid tropics.

A pesar de la importancia clínica del concepto de la contratransferencia hay pocos instrumentos para evaluarla, uno de ellos es el Countertransference Questionnaire que mide la contratransferencia durante un proceso terapéutico. Este cuestionario es de autoreporte, sus ítems se refieren a un amplio rango de ideas, sentimientos y conductas hacia sus pacientes expresados por los terapeutas. Está redactado en lenguaje cotidiano, sin términos técnicos, lo que permite que el instrumento pueda ser usado y comparado por clínicos de cualquier orientación teórica. En este artículo presentamos su traducción, adaptación para ser aplicado en una entrevista o sesión y la validación en una población de psiquiatras y psicólogos chilenos que realizamos con una muestra de 333 cuestionarios. Hicimos tres versiones del cuestionario: Entrevistador, Observador y Observador del entrevistador. Realizamos un análisis factorial exploratorio que agrupó los ítems en siete factores con consistencia interna buena o muy buena (alfa de Cronbach entre 0,66y 0,89). Los resultados arrojaron que este instrumento es válido para ser aplicado en psiquiatras y psicólogos chilenos. Despite the clinical importance of the concept of countertransference there are few instruments to evaluate it; one of them is the Countertransference Questionnaire (CQ), which measures countertransference during a therapeutic process. The CQ is a self-report questionnaire, composed of a set of items that refer to a wide range of ideas, feelings and behaviors that therapists develop towards their patients. It is written in common language, without the use of technical terms, allowing the instrument to be used and compared by clinicians of any theoretical orientation. The following paper shows the translation to Spanish, an adapted version for its application in one interview or session, and its validation in a population of Chilean psychiatrists and psychologists in a sample of 333 completed questionnaires. Three versions of the questionnaire were created: Interviewer, Observer and Observer of the Interviewer. We conducted an exploratory factor analysis wich grouped the items on a total of seven factors with good or very good internal consistency (Cronbach’s alpha between 0.66 and 0.89) Results showed that the instrument is valid for its application in Chilean psychiatrists and psychologists.