American ginseng (_Panax quinquefolius_) is a slow-growing medicinal root native to eastern North America. Though it is possible to farm, wild ginseng can sell for twenty (or more) times as much as cultivated ginseng. Declining wild ginseng populations due to habitat loss and overharvesting has led to harvest restrictions, but strong demand for wild ginseng remains. One potential solution is “wild-simulated” ginseng, where ginseng is grown under conditions crafted to mimic a wild forest with the goal of producing roots that (...) look wild. I contend, however, that despite the fact that wild-simulated ginseng grows in a habitat actively tended and monitored by humans, is nevertheless _wild_. I explore wildness as “productive unruliness” and show how wild-simulated ginseng actively crafts wildness through management to maintain if not add complexity, to foster unpredictability, or to facilitate stress. Furthermore, the habitat that wild-simulated ginseng growers are attempting to emulate—“wild” Appalachian woodlands dominated by an assemblage of “native” plants that pre-date the arrival of Europeans in the Americas—are themselves the product of human manipulation. In Appalachia, the boundaries between the wild and the cultivated are blurred. Wild-simulated ginseng is an example of how conservation goals can be achieved by crafting “wild” environments that are not untouched, pristine wildernesses. (shrink)

Niche Construction Theory has been gaining acceptance as an explanatory framework for processes in biological and human evolution. Human cultural niche construction, in particular, is suggested as a basis for understanding many phenomena that involve human genetic and cultural evolution. Herein I assess the ability of the cultural niche construction framework to meet this explanatory role by looking into several NCT-inspired accounts that have been offered for two important episodes of human evolution, and by examining the contribution of NCT to (...) the elucidation of two “primary examples” mentioned often in the NCT literature. The result, I claim, is rather disappointing: While NCT may serve as a descriptive framework for these phenomena, it cannot be said to explain them in any substantive sense. Especially disturbing is NCT’s failure to account for differing developments in very similar situations, and to facilitate evaluation and discrimination between divergent and contradictory causal accounts of particular phenomena. I argue that these problems are inherent, and they render NCT unsuitable to serve as an explanatory framework for human phenomena. NCT’s value, at least as related to human phenomena, is therefore descriptive and heuristic rather than explanatory. In conclusion, I discuss and reject comparisons made between NCT and the theory of natural selection, and examine several potential sources of NCT’s explanatory weakness. (shrink)

Niche construction theory (NCT) is distinctive for being explicit in recognizing environmental modification by organisms—niche construction—and its legacy—ecological inheritance—to be evolutionary processes in their own right. Humans are widely regarded as champion niche constructors, largely as a direct result of our capacity for the cultural transmission of knowledge and its expression in human behavior, engineering, and technology. This raises the question of how human ecological inheritance relates to human cultural inheritance. If NCT is to provide a conceptual framework for the (...) human sciences, then it is important that the relationship between these two legacies is clear. We suggest that cultural processes and cultural inheritance can be viewed as the primary means by which humans engage in the universal process of niche construction. (shrink)

Niche construction is the process whereby organisms, through their activities and choices, modify their own and each other’s niches. By transforming natural-selection pressures, niche construction generates feedback in evolution at various different levels. Niche-constructing species play important ecological roles by creating habitats and resources used by other species and thereby affecting the flow of energy and matter through ecosystems—a process often referred to as “ecosystem engineering.” An important emphasis of niche construction theory (NCT) is that acquired characters play an evolutionary (...) role through transforming selective environments. This is particularly relevant to human evolution, where our species has engaged in extensive environmental modification through cultural practices. Humans can construct developmental environments that feed back to affect how individuals learn and develop and the diseases to which they are exposed. Here we provide an introduction to NCT and illustrate some of its more important implications for the human sciences. (shrink)

A skew in sex ratio at birth occurs across much of Asia and North Africa. The resulting gender imbalance in favor of men in the adult population causes a number of serious social problems, including increased violence against women and an increasing number of “forced bachelors” in many areas. Here we concentrate on the sex ratio at birth in China and model two causal factors specific to Chinese culture: a traditional preference for sons over daughters and a preference for brides (...) to move to their husband’s natal home (virilocal marriage). We use cultural niche construction models to explore the interacting effect of both son preference and marriage-type preference on the demography of the region. Finally, we discuss the implications of this model for policy interventions in the future. (shrink)