Socioeconomic predictors of forest use values in the Peruvian Amazon: A potential tool for biodiversity conservation

Conservation is a crisis discipline requiring rapid action with limited funds. This study examines the potential of socioeconomic variables to predict forest use values. If natural resource use can be predicted from socioeconomic data, conservation planners could rapidly identify and focus conservation programs on the sectors of local populations that most intensively utilize local flora and fauna. Families in three communities in the northern Peruvian Amazon were surveyed over a 6-month period. Data were collected on use of flora and fauna from six locally determined use categories (food, medicine and poisons, wood, weavings, adornments, and “other”) in forest types of three age classes (fallow fields—very young forests, young secondary forests, and old secondary forests). Forest use values were the dependant variables calculated in $/ha/year. Socioeconomic variables included: age, education, family size, residence time, land worked, land owned, number of fishing nets, chickens, pigs, cows, and/or mules owned (all proxies for productive assets), and level of ecological knowledge (ability of informants to correctly identify forest species and answer basic questions about their biology). Ordinary least square multiple regressions were run independently for each forest type. Regressions were also run separately for the two most valuable use categories, food and wood. Low R² adjusted values (all < 0.3) reflect the difficulty in predicting human behavior due to confounding variables and complex interactions. Residence time and a household's community of residence were the most significant predictors of forest use values. Households in Vista Alegre, the community with the highest density of people and smallest landholdings per household, extracted the highest value of forest products per hectare. The longer a family stayed in any community the higher the value of forest goods they extracted. If families that lived in an area longest are the most intensive extractors of forest products, they should be a major focus for conservation programming. In addition, the higher value of products extracted from forests by some families may make them more open to strategies seeking to protect long-term viability of the resources they utilize. The importance of residence time also indicates that planners need to account for changes in the resource use patterns of stakeholders over time.     

A Theory of Voluntary Unrequited International Transfers

This paper proposes a theory of voluntary unrequited international transfers which explicitly allows for an international externality such that the well being of each country is influenced by the well being of other countries. Formulating a simple two–country and two–commodity model, this paper shows that (a) either neither country extends aid to the other, or one country extends aid and both countries benefit from the aid; and (b) there exist acceptable (Arrow–Debreu) economies such that neither country extends aid to the other, and there exist acceptable economies such that one country extends aid to the other.
JEL Classification Numbers: F11, F35.     

Noisy chaotic dynamics in commodity markets

The nonlinear testing and modeling of economic and financial time series has increased substantially in recent years, enabling us to better understand market and price behavior, risk and the formation of expectations. Such tests have also been applied to commodity market behavior, providing evidence of heteroskedasticity, chaos, long memory, cyclicity, etc. The present evaluation of futures price behavior confirms that the resulting price movements can be random, suggesting noisy chaotic behavior. Prices could thus follow a mean process that is dynamic chaotic, coupled with a variance that follows a GARCH process. Our conclusion is that models of this type could be constructed to assist in forecasting prices in the short run but not over long run time periods.First version received: June 2001/Final version received: March 2003     

The Log of Gravity at 15

Portuguese Economic Journal - We review the contribution of “The Log of Gravity” (Santos Silva and Tenreyro, Rev Econ Stat 88:641–658, 2006), summarize the main results in the...     

Hermite ranks and U-statistics

We focus on the asymptotic behavior of $U$ -statistics of the type $$\begin{aligned} \sum _{1\le i\ne j\le n} h(X_i,X_j)\\ \end{aligned}$$ in the long-range dependence setting, where $(X_i)_{i\ge 1}$ is a stationary mean-zero Gaussian process. Since $(X_i)_{i\ge 1}$ is Gaussian, $h$ can be decomposed in Hermite polynomials. The goal of this paper is to compare the different notions of Hermite rank and to provide conditions for the remainder term in the decomposition to be asymptotically negligeable.     

Beyond necessity versus opportunity entrepreneurship: some lessons from English deprived urban neighbourhoods

When discussing the motivations of entrepreneurs, it has become commonplace to represent them dichotomously as either necessity or opportunity driven. This paper evaluates critically this dualistic depiction of entrepreneurs’ motives through an examination of the rationales of entrepreneurs and potential entrepreneurs living in a deprived urban neighbourhood of an English city, a group of entrepreneurs who have been conventionally depicted as largely driven by necessity into entrepreneurship in the absence of alternative means of livelihood. Reporting the results of a face-to-face questionnaire conducted in 2008 with 459 respondents and a further 18 follow-up in-depth interviews, the finding is that forcing individual entrepreneurs’ motives into one or other of these categories grossly over-simplifies their rationales which in lived practice are not only a mixture of both opportunity and necessity but also temporally fluid shifting most often from more necessity- to more opportunity-oriented rationales. The outcome is to reveal that the opportunity versus necessity dichotomy, which uses the perceptions of an entrepreneur’s originating condition as the defining feature of their motivations, is a misleading way of categorising types of entrepreneurship not only because motivations change over time but also because entrepreneurs are frequently driven by both necessity as well as opportunity factors. The result is a call to move beyond the conventional either/or depiction of opportunity versus necessity entrepreneurship and towards a richer, more nuanced and dynamic appreciation of entrepreneurs’ motivations.     

Conceptualizing entrepreneurial capital in the context of institutional change

This paper explores the building of entrepreneurial capital from an entrepreneurship and contextual/institutional position. In taking this position, it is possible to understand “entrepreneurial capital” as the content of the process that unfolds when individuals are exposed to certain characteristics of the environment. Drawing on findings from an ethnographically inspired longitudinal case study, the paper identifies the various actions attributed to entrepreneuring actors. Using the context of Poland as an illustrative case, the paper traces a variety of entrepreneuring accounts which appear to define entrepreneurial capital. This in turn provides a preliminary theoretical framework for the nature and the key elements of entrepreneurial capital. The study indicates that entrepreneurial capital is relationally and contextually constituted. The findings draw attention to the value of entrepreneurial capital in the context of an organizational and institutional change process that (1) involves the active creation Lachmann (Organization Studies 31: 219–244, 1986) of entrepreneuring actors within an organizational and societal context, (2) creates beneficial and supportive conditions that incorporate internal (organizational, personality) and external (environmental) resources for entrepreneuring, and (3) is facilitated by the entrepreneuring process. Finally, implications for entrepreneurship inquiry are drawn.