area examined exchange between the Aka and cultivators (Kitanishi 1994), seasonal changes in subsistence (1995), and food sharing (1998). Kitanishi (1996) specifically analyzed the acquisition and distribution of meat and honey by different-aged Aka males.
In recent years, Japanese research among Baka of northern Congo and southwestern Cameroon has increased. Studies have investigated Baka nutrition and dietary intake (Yamauchi et al. 2000), sedentary and migratory hunting camps (Hayashi 2008), conservation and hunting sustainability (Hattori 2005; Yasuoka 2006a), the many uses of Marantaceae plants (Hattori 2006), and the potential of wild yams as staple food resources in African tropical forests (Sato 2001, 2006; Yasuoka 2006b, 2009). Forest peoples preserve and maintain a vast knowledge of tropical species, and the scholars cited here share the priority of documenting this traditional knowledge and its behavioural expressions.
This overview of the Japanese traditions is somewhat longer than British and French overviews because the number of Japanese researchers conducting research with foragers in this region in the last 30 years was substantially greater than the number of British or French researchers. The Japanese research on Congo Basin foragers is generally ecologically-focused, is very inductive and descriptive, based on observations and some interviews and is not organized around any one theoretical orientation.
Unlike the other national traditions, two scholars have relatively similar academic productivity on Congo Basin foragers. Robert Bailey and Barry Hewlett both have published one monograph and over 20 journal articles or book chapters as first author. Bailey is better known for his