credit market constraints consumption smoothing and the accumulation of durable production assets in low income countries investments in bullocks in india in this paper we formulate and estimate a finite horizon structural dynamic model of agricultural investment behavior that incorporates the major features of low income agricultural environments income uncertainty constraints on borrowing and rental markets and the use of investment assets to generate income and smooth consumption the model is fit to longitudinal indian household data on farm profits bullock stocks and pump sets the estimated structural parameters are used to assess the effects on the life cycle accumulation of bullocks agricultural profits and welfare associated with complete markets and bullock liquidity and with second best policies that provide assured sources of income to farmers and weather insurance

effects of wildlife resources on community welfare in southern africa abstract this paper demonstrates the importance of wildlife in the portfolio of environmental income in the livelihoods of poor rural communities living adjacent to a national park the results show that wealthier households use more wildlife resources in total than do relatively poor households however poorer households derive greater proportional benefit than wealthier households from the use of wildlife resources excluding wildlife understates the relative contribution of environmental resources while at the same time overstating the relative contribution of farm and wage income wildlife income alone accounts for about a 5 5 reduction in the proportion of people living below the poverty line furthermore wildlife income has an equalizing effect bringing about a 5 4 reduction in measured inequality regression analysis suggests that the likelihood of belonging to a wealthier category of income increases with an increase in environmental income as expected household wealth significantly and positively affects environmental income generated by households this seems to suggest that wildlife based land reform also needs to empower poor households in the area of capital accumulation while imposing restraints on the use of capital investments by well off households to harvest wildlife

child labor and agricultural shocks this paper examines the relationship between household income shocks and child labor in particular we investigate the extent to which transitory income shocks lead to increases in child labor and whether household asset holdings mitigate the effects of these shocks using data from a household panel survey in tanzania we find that both relationships are significant we investigate mechanisms that could account for these results including buffer stocks and borrowing

missing risk sharing markets and the benefits of cross hedging in developing countries abstract we study the impact of exchange rate risk on an exporting firm in a developing country when there is no forward market in the foreign currency however there exists a forward traded cross hedging asset in this country by cross hedging its foreign exchange exposure the firm can increase its economic welfare export production increases and promotes international trade of the developing country if the spot rate of foreign exchange has some regression relationship to the price of the cross hedging asset we extend our results to the case of price as well as initial wealth uncertainty

on the existence of equilibrium points in a class of asymmetric market entry games sufficient conditions for the existence of equilibria in pure strategies in market entry games are provided these conditions are i a form of payoff monotonicity and ii acyclicity of a particular dominance relation defined on the set of players they do not exclude asymmetry of the players the result is applicable to asymmetric oligopoly models with technological nonconvexities such as fixed costs

ex ante and ex post labor supply response to risk in a low income area abstract this paper tests for ex ante and ex post labor supply responses to weather risk for rural indian farm households the analysis uses panel data on 2115 households spanning 13 states in rural india merged with a 22 year series of district level rainfall data ex ante households facing riskier distributions of rainfall are more likely to participate in the labor market ex post unexpectedly bad weather and low rainfall increase labor force participation

optimal international hedging in commodity and currency forward markets abstract this paper derives optimal hedging and production rules for an exporting firm which faces both commodity price and foreign exchange rate uncertainty the size of the commodity hedge is independent of the properties of the foreign exchange market however the optimal foreign exchange hedge depends on the commodity hedge and the properties of the commodity forward market the firm s production decision is independent of its objective function if both forward markets exist but depends on the consumption beta of the unhedgeable risks in the absence of one or both of the markets

the economics of poverty traps and persistent poverty an asset based approach abstract longitudinal data on household living standards open the way to a deeper analysis of the nature and extent of poverty while a number of studies have exploited this type of data to distinguish transitory from more chronic forms of income or expenditure poverty this paper develops an asset based approach to poverty analysis that makes it possible to distinguish deep rooted persistent structural poverty from poverty that passes naturally with time due to systemic growth processes drawing on the economic theory of poverty traps and bifurcated accumulation strategies this paper briefly discusses some feasible estimation strategies for empirically identifying poverty traps and long term persistent structural poverty as well as relevant extensions of the popular foster greer thorbecke class of poverty measures the paper closes with reflections on how asset based poverty can be used to underwrite the design of persistent poverty reduction strategies

credit markets in northern nigeria credit as insurance in a rural economy this article addresses the issues of imcomplete markets and imperfect information in the context of credit markets in rural northern nigeria in much recent theoretical literature the problems of moral hazard and adverse selection are assumed to be decisive for the organization of agrarian institutions in contrast it is found that in the four villages surveyed credit transactions take advantage of the free flow of information within rural communities information asymmetries between borrower and lender are unimportant and their institutional consequences the use of collateral and interlinked contracts are absent credit transactions play a direct role in pooling risk between households through the use of contracts in which the repayment owed by the borrower depends on the realization of random production shocks by both the borrower and the lender

modeling the nutritional and distributional effects of taxing export crops it has been argued that the proximate causes of poverty among smallholders and its manifestation in extraordinarily high levels of malnutrition among preschool aged children emanate largely from the inadequate size of landholdings which produce insufficient food for the nutritional needs of the household 3 it has virtually become a convention in malawi to define poverty by landholding size 4 as a consequence a key element of the strategy to alleviate poverty and ensure food security in rural malawi has been to promote at least a subsistence level of maize production by smallholders through increasing or at

wood extraction among the households of zege peninsula northern ethiopia abstract the dependence of smallholder farmers on forest resources for their sustenance and livelihoods is a major driver of deforestation and degradation of forest resources in tropical countries understanding the socio economic drivers that aggravate the extraction and overexploitation of forest products is vital for designing effective forest conservation and restoration measures this particularly holds with regard to the importance of two fundamentally opposing motivations of smallholder forest exploitation which we label wood extraction for need vs wood extraction for greed this study was conducted at zege peninsula in northern ethiopia to investigate the factors affecting the extraction and marketing of wood from the peninsula s primary dry afromontane forest by smallholders data was collected using household survey focus groups discussions and key informant interviews data analysis employed the heckman two steps econometric model the predominant involvement of vulnerable households in forest exploitation suggests that wood extraction was driven by need and mainly served sustenance and safety net functions in addition we also found evidence of greed driven forest exploitation as a consequence of selective rule enforcement and nepotism the forest enforcement committee was not effective in safeguarding the forest there by contributing to increased wood extraction and marketing by community members for income generation this suggests that in order to protect the forest interventions are needed that aim at creating alternative income opportunities for smallholders through improved production of non timber forest products enhanced market access and the provision of locally adapted technologies as well as at increasing the integrity of law enforcement

cournot walras and locally consistent equilibria abstract a kth order locally consistent equilibrium k lce is an imperfectly competitive general equilibrium allocation at which firms perceive only a kth order taylor expansion of their true demand curves it is shown that under simple regularity conditions the set of kth order locally consistent equilibrium strategies coincides with the set of cournot walras equilibria as soon as k 1 in addition a characterization of the set of negishi equilibria or 0 lces and an existence result for 1 lces in private ownership economies are provided

multiple currencies and hedging this paper presents a model of a competitive exporting firm confronting multiple currency risks future markets do not exist for the firm s own currency but do exist between currencies of two countries to which the firm exports its entire output we provide analytical insight into optimal cross hedging and its implications on production and on trade flows we show that the unbiasedness of the cross currency futures market does not imply non random profits furthermore the availability of cross hedging opportunities has no effects on production but does have effects on exports

cross hedging under multiplicative basis risk cross hedging price risk in an incomplete financial market creates basis risk we propose a new way of modeling basis risk where price risk and basis risk are combined in a multiplicative way under this specification positive prudence is a necessary and sufficient condition for underhedging in an unbiased market using the example of cross hedging jet fuel price risk with crude oil futures we show that the new specification is superior in describing the price series and that optimal cross hedges differ significantly from those derived under the traditional additive cross hedging model

elasticity of risk aversion and international trade abstract this paper analyzes export production in the presence of exchange rate uncertainty under mean variance preferences we present the elasticity of risk aversion since this elasticity concept permits a distinct investigation of risk and expectation effects on exports counterintutitive results are possible e g although the home currency is revaluating devaluating exports by the firm increase decrease this fact may contribute to the explanation of disturbing empirical results

asset smoothing consumption smoothing and the reproduction of inequality under risk and subsistence constraints abstract a growing literature asks whether low wealth agents can accumulate assets over time or whether they are trapped in poverty this paper develops a stochastic dynamic programming model with endogenous asset price risk to explore savings and portfolio decisions in a resource poor environment characterized by risk and subsistence constraints optimal portfolio strategies are found to bifurcate despite divisible assets and fully rational agents wealthier agents acquire a higher yielding portfolio and pursue conventional consumption smoothing poorer agents acquire a less remunerative portfolio and pursue asset smoothing rather than consumption smoothing asset based risk coping thus results in positive correlation between initial wealth and portfolio rate of return

income smoothing and consumption smoothing one way that risk averse households protect consumption levels is to borrow and use insurance mechanisms another way common in low income economies is to diversify economic activities and make conservative production and employment choices households thus tend toward limiting exposure only to shocks that can be handled with available credit and insurance typically both types of mechanisms are studied independently but much more can be learned by studying them together first we obtain a more complete picture of risks costs and insurance possibilities second it opens the way to considering biases in standard tests of credit and insurance

a note on insurance coverage in incomplete markets in this paper full insurance coverage on average is defined as the coinsurance rate that eliminates all insurable risk when the uninsurable risk is evaluated at its mean the regressibility assumption is used to derive the conditions on the correlation between background and insurable risks and the actuarial unfairness of insurance under which full over or underinsurance on average is optimal these conditions are compared to those for the case of default risk together they explain intuitively the different results under the cases of background risk and default risk obtained in the literature

wealth weather risk and the composition and profitability of agricultural investments despite the growing evidence that farmers in low income environments are risk averse there has been little empirical evidence on the importance of risk in shaping the actual allocation of production resources among farmers differentiated by wealth the authors use panel data on investments in rural india to examine how the composition of productive and nonproductive asset holdings varies across farmers with different levels of total wealth and across farmers facing different degrees of weather risk income variability is a prominent feature of the experience of rural agents in low income countries the authors report evidence based on measures of rainfall variability that the agricultural investment portfolio behavior of farmers in such settings reflects risk aversion due evidently to limitations on consumption soothing mechanisms such as crop insurance or credit markets the authors results suggest that uninsured weather risk is a significant cause of lower efficiency and lower average incomes a one standard deviation decrease in weather risk measured by the standard deviation of the timing of the rainy season would raise average profits by up to 35 percent among farmers in the lowest wealth quartile moreover rainfall variability induces a more unequal distribution of average incomes for a given distribution of wealth wealthier farmers are willing to absorb significant risk without giving up profits to reduce production risk smaller farmers have to invest their limited wealth in ways that reduce their exposure to risk at the cost of lower profit rates the authors found that at high levels of rainfall variability differences in rates of profit per unit of agricultural assets were similar across classes of wealth but over the sample range of rainfall variability these rates of profit were always higher for the poorer farmers than for the wealthier ones suggesting that the disadvantages of small farmers in risk diffusion are more than offset by their labor cost advantage

determinants and effects of income diversification amongst farm households in burkina faso using four years of household data from three agroecological zones in burkina faso sahelian sudanian and guinean the article examines the determinants and effects of household income diversification harvest shortfalls and terms of trade are found to drive diversification but land constraints do not income diversification is associated with higher incomes and food consumption and more stable income and consumption over years

environmental and market determinants of economic orientation among rain forest communities evidence from a large scale survey in western amazonia abstract large scale surveys of rain forest livelihoods open up new possibilities for understanding the role of forest resources in the well being of forest peoples but often overlook the factors that influence the diverse economic foci of forest based communities in this paper we describe the peruvian amazon rural livelihoods and poverty parlap project which seeks to identify the factors that contribute to rural poverty among indigenous and folk peoples through the first large scale survey conducted in this data poor region our paper draws upon a community census undertaken in four major river sub basins in eastern peru n 919 communities and asks the question how do environmental and market factors influence the economic orientation of rain forest communities recognizing that standard approaches that explain activity choice by current conditions are problematic because of potential endogeneity we propose a new analytical framework that examines how historical initial conditions determine current conditions and thus current economic activities our approach produces a rich array of results that point to the importance of initial environmental endowments and market access of communities in shaping their economic orientation interacting in different ways depending on the key natural resource upon which they rely

economic shocks diversification and forest use in uganda we investigate household outcomes arising from economic shocks in rural uganda focusing on patterns of income diversification and forest use and the role of assets in shaping ex post response to shocks income poor households and those with below average landholdings are observed to have more diversified income portfolios than their cohorts households encountering above average losses tend to have more diversified income portfolios subsequent to the losses larger negative shocks are associated with greater use of the forest in subsequent periods especially among asset poor households findings suggest that development of better safety nets would reduce both vulnerability and forest pressure

liquidity constrained exporters and trade abstract we present a model of a risk averse exporting firm subject to liquidity constraints we show that preferences and expectations become important for optimum export and hedging decisions only firms that have sufficient financial resources can fully materialize gains from trade

optimal bidding and hedging in international markets this paper examines the optimal bidding and hedging decisions of a risk averse contractor for a construction project abroad we show that currency options play no role as a hedging instrument when the contractor has a quadratic utility function however if the contractor is prudent currency options are used for hedging purposes prudence thus generates a hedging demand for currency options when foreign exchange exposure is uncertain contrary to the conventional wisdom we show that currency hedging may have perverse effects on the contractor s bidding behavior in a canonical example with negative exponential utility functions we demonstrate that the possibilities for the contractor to bid more aggressively in the absence of currency hedging are not factitious

international trade with forward futures markets under exchange rate and price uncertainty abstract the paper examines a risk averse firm s decisions on the level of trade when the exchange rate and the commodity price are uncertain and the extent of forward exchange and commodity futures commitments first we verify the separation theorem and the full double hedging theorem second we investigate the implications of the existence of both forward foreign exchange and commodity futures markets in comparison to the case where only one or no market is available to the firm the second exercise enables us to focus on conditions under which establishing forward futures arrangements promotes international trade

wealth risk and activity choice cattle in western tanzania abstract imperfect credit markets force households to use their savings for investment profitable activities often require lumpy investments limiting entry by poorer households resulting in increasing welfare differences in tanzania cattle are a profitable but lumpy investment and a liquid asset for consumption smoothing richer households own substantial cattle herds while poorer households specialize in low return low risk activities a dynamic programming model and simulations are presented to analyze entry into asset accumulation under income risk the evidence suggests that households with lower endowments are less likely to own cattle and returns to their endowments are lower

environmental income and rural livelihoods a global comparative analysis this paper presents results from a comparative analysis of environmental income from approximately 8000 households in 24 developing countries collected by research partners in cifor s poverty environment network pen environmental income accounts for 28 of total household income 77 of which comes from natural forests environmental income shares are higher for low income households but differences across income quintiles are less pronounced than previously thought the poor rely more heavily on subsistence products such as wood fuels and wild foods and on products harvested from natural areas other than forests in absolute terms environmental income is approximately five times higher in the highest income quintile compared to the two lowest quintiles

hedging price risk when real wealth matters abstract this paper analyzes optimal hedging of a tradable risk e g price risk or exchange rate risk with forward contracts in the presence of untradable inflation risk utility is defined over real wealth optimal forward positions are derived relative to a given initial exposure in the tradable risk a nominally unbiased forward market usually implies a non zero real risk premium and hence some risk taking if untradable inflation risk is a monotone function of the tradable risk plus noise cross hedging and speculating on the real risk premium are conflicting objectives the level of relative risk aversion determines which objective is dominant in a nominally unbiased forward market

can income programs reduce tropical forest pressure income shocks and forest use in malawi summary seasonal household data from malawi are used to study links between income shocks and forest use a tobit model is estimated to examine whether household forest use responds to receipt of a positive income shock delivered as a technology assistance package and the characteristics of households reliant on forests for shock coping results show households experiencing an income boost had lower forest extraction compared to households that did not receive such a shock ceteris paribus we find households most dependent on forests for natural insurance are those located near woodlands and headed by an individual who is relatively young and male 2005 published by elsevier ltd

trees as savings and security for the rural poor abstract professionals have rarely seen trees as savings banks for poor people but while trees and their products have become more valuable and easier to market many poor people have become more vulnerable as contingencies cost more and traditional supports weaken consequently trees have increasing importance and potential as savings and security for the poor and for use to meet contingencies for savings and security trees compare quite well with jewelry large stock small stock land and bank deposits disadvantages of trees can include insecure or unclear rights restrictions on cutting and selling when needed and problems with marketing but common advantages include cheap and easy establishment rapid appreciation in value divisibility to meet needs closely and regeneration after cutting more empirical studies are needed on the use and potential of trees as poor people s savings banks the policy implications of present evidence and analysis include tree reform improved marketing and prices and above all investing poor people with secure and full ownership of trees with rights to harvest cut and sell similar to the withdrawal rights of depositors in savings banks

determinants of income diversification amongst rural households in southern mali abstract household level panel data from a representative sample of rural households in southern mali describing the different sources of household income are used to examine the determinants of income diversification a conditional fixed effects logit model is employed in the analysis to control for household specific effects we find evidence that poorer households have fewer opportunities in non cropping activities such as livestock rearing and non farm work and hence less diversified incomes this appears to reflect their relative lack of capital which makes it difficult for them to diversify away from subsistence agriculture the results also indicate that households in remote areas are less likely to participate in the non cropping sector than their counterparts closer to local markets while households with educated heads are more likely to participate in the non farm sector than those with illiterate heads the significance of entry constraints in explaining portfolio diversification suggests that the role of government in making assets as well as improved infrastructure available to poorer households is still essential in promoting income diversification

forest based livelihoods strategies conditioned by market remoteness and forest proximity in jharkhand india summary the study uses a novel method to investigate the role of forest proximity market remoteness and caste in determining household income especially forest income in an underdeveloped region of india a high 50 proportion of total income is earned in cash forest products contribute substantially to total income with fuelwood as the most important forest product proximity to forest is associated with higher forest incomes as expected but remote villages do not have higher forest incomes or lower cash incomes than less remote villages higher off farm income is associated with better road access and higher income households generally 2014 published by elsevier ltd this is an open access article under the cc by nc sa license http creativecommons org licenses bync sa 3 0

forest loss and economic inequality in the solomon islands using small area estimation to link environmental change to welfare outcomes abstract to study welfare effects of environmental change data from household surveys may be linked to remote sensing data using spatial aggregation to link risks ecological fallacy since surveys are usually representative for areas larger than the spatial scale of decision making units this paper uses survey to census imputation to estimate welfare indicators for small areas to study the effect of deforestation on subsequent inequality in the rural solomon islands this country depends on logging for almost half of foreign exchange and one sixth of government revenue and most forested land remains under customary ownership a sharp increase in log exports to seven times the sustainable yield and a major shift in export destinations as other countries withdrew from the tropical log trade represents an exogenous shock that helps to identify effects of deforestation on inequality rather than the reverse relationship a standard deviation increase in the rate of forest loss over 2000 to 2012 raises the gini index of inequality in 2013 by one third of a standard deviation mean incomes and poverty rates are also higher implying that deforestation makes some households richer while others become poorer these precisely estimated effects would be obscured using more spatially aggregated data

indirect hedging of exchange rate risk abstract the purpose of this study is to investigate the impact of exchange rate risk upon export production when the firm cannot engage in a direct forward hedge in the exchange rate however there exists a forward market for a domestic financial asset correlated with the exchange rate in question exporting firms using such an indirect hedging device to reduce foreign exchange risk do not necessarily increase their output when such unbiased hedging market becomes available this contrasts with the well known result in the case of direct hedging

using weather variability to estimate the response of savings to transitory income in thailand this paper measures the extent to which farmers are able to use savings and dissavings to smooth consumption in response to unexpected shocks to income time series information on regional rainfall is used to construct estimates of transitory income due to rainfall shocks the relationship between these measures of transitory income and savings indicates that farm households save a significantly higher fraction of transitory income than nontransitory income jel d91 016 the incomes of farm households in developing countries are notorious for being both low and uncertain policies that increase the incomes of farmers may well be different

safety nets gap filling and forests a global comparative perspective summary in the forest livelihoods literature forests are widely perceived to provide both common safety nets to shocks and resources for seasonal gap filling we use a large global comparative dataset to test these responses we find households rank forest extraction responses to shocks lower than most common alternatives for seasonal gap filling forest extraction also has limited importance the minority of households using forests for coping is asset poor and lives in villages specialized on forests in particular timber extraction overall forest resources may be less important as a buffer between agricultural harvests and in times of unforeseen hardship than has been found in many case studies 2014 published by elsevier ltd

imperfect hedging and export production firms engaged in international operations are highly interested in developing ways to protect themselves from exchange rate risk the incentive for risk management comes from the enormous volatility of the floating foreign exchange rates our study shows that an exporting firm can benefit from hedging exchange rate risks even when no perfect hedge is possible since in reality not every currency is traded in a futures market 7 chap 15 the exporting firm uses futures contracts with other underlying assets whose spot prices are highly correlated with the foreign exchange spot rate in the real world hedging must often be accomplished by using futures contracts on different deliverable instruments such hedging may result in imperfect hedging as shown by anderson and danthine 1 eaker and grant 11 dellas and zilberfarb 9 broll wahl and zilcha 6 it has been shown in recent publications 12 8 15 13 23 16 2 14 5 18 22 that an international firm facing exchange rate risk can eliminate this risk altogether if it can use a currency forward market another financial asset or a portfolio of assets which is perfectly correlated to the exchange rate in the absence of such markets the firm can reduce its income risk by engaging in a hedging activity of assets correlated to the foreign exchange recent studies of firm behavior under exchange rate uncertainty examine the influence of futures markets on the export and hedging decision these papers derive two major theorems one is the separation theorem which states that when futures markets exist the firm s export production decision is determined solely by technology and input output prices including the futures prices this result holds if the gain from the futures contract is perfectly correlated with export revenue the other theorem is the full hedging theorem which asserts that with unbiased futures markets the firm completely avoids exchange rate risk by entering into optimum futures contracts

equilibrium play in large group market entry games coordination behavior is studied experimentally in a class of noncooperative market entry games featuring symmetric players complete information zero entry costs and several randomly presented values of the market capacity once the market capacity becomes publicly known each player must decide privately whether to enter the market and receive a payoff which increases linearly in the difference between the market capacity and the number of entrants or stay out payoffs for staying out are either positive giving rise to the domain of gains or negative giving rise to the domain of losses the major findings are substantial individual differences that do not diminish with practice aggregate behavior that is organized extremely well in both the domains of gains and losses by the nash equilibrium solution and variations in the population action strategies with repeated play of the stage game that are accounted for by a variant of an adaptive learning model due to roth and erev 1995

forests livelihoods and conservation broadening the empirical base summary more than 10 000 years after the agricultural revolution started millions of rural smallholders across the developing world may still derive as much income from foraging forests and wildlands as from cultivating crops these steady environmental income flows come often from public forests and are extracted by men and women alike however inflexible supplies from nature the physical hardship of harvesting and commonly low returns limit their role as safety nets and pathways out of poverty while their harvesting does not preclude the ongoing conversion of wildlands to agriculture privileged access to high quality environmental resources can become a strong local conservation motive

forest reliance across poverty groups in tanzania an emerging body of knowledge has established that poorer households in forest adjacent communities in developing countries are generally more forest reliant higher forest income share while richer households tend to extract more and generate higher absolute forest income these studies commonly categorize households based on observed income in cross section data presenting a snap shot reflecting both inter household and inter annual income variation in this paper we introduce a new approach to categorize households based on a combination of the observed one year income and predicted income by an augmented asset approach applying this approach on household data from tanzania we find forest reliance to be high among structurally poor households low observed income and assets the highest forest reliance is found among the stochastically non poor households high income and low assets and this group also has the highest absolute forest income

price setting and attainment of equilibrium posted offers versus an administered price abstract the operation of the posted offer market with advance production environment mestelman and welland 1988 appropriately parameterized differs from that of the market entry game selten and guth 1982 appropriately presented only in terms of price setting we establish the effect of this difference in price setting on attainment of the competitive equilibrium allocation while controlling for effects relating to the presentation of the market entry game and to the stationarity or non stationarity of environment free posting of prices promotes convergence to the competitive equilibrium allocation while the typical market entry game data can be characterized as displaying cycling prices

quantifying the economic contribution of wild food harvests to rural livelihoods a global comparative analysis this paper empirically quantifies and analyses i the economic contribution of wild foods to rural households ii the household socio economic demographic and geographical correlates of wild food income and iii how wild foods can be better incorporated into integrative food security policies we used household income data from 7975 households in 24 developing countries across three continents collected by the poverty environment network pen we found 77 of households to be engaged in wild food collection from forest and non forest environments even though the share of wild food income in total household income was on average only 4 poorer households and households experiencing shocks derived higher income shares from wild foods state land is the main source of forest derived wild food income while private lands are most important for non forest wild food income considerable regional variation in determinants and the direction of significant relationships indicate there is no one size fits all approach to integrating wild foods into food and forest policies however our results reveal potential to increase household food security by integrating wild foods into national food policies in more customized ways

household strategies and rural livelihood diversification this article reviews the recent literature on diversification as a livelihood strategy of rural households in developing countries with particular reference to sub saharan africa livelihood diversification is defined as the process by which rural families construct a diverse portfolio of activities and social support capabilities in order to survive and to improve their standards of living the determinants and effects of diversification in the areas of poverty income distribution farm output and gender are examined some policy inferences are summarised the conclusion is reached that removal of constraints to and expansion of opportunities for diversification are desirable policy objectives because they give individuals and households more capabilities to improve livelihood security and to raise living standards

empirical regularities in the poverty environment relationship of rural households evidence from zimbabwe abstract analysis of rural households and environmental resources is beset by inadequate data especially in africa using purpose collected panel data from zimbabwe we demonstrate seven empirical regularities in the rural poverty environment relationship most important environmental resources make a significant contribution to average rural incomes poorer households also depend heavily on these resources which contribute c 40 to their incomes richer households however use greater quantities of environmental resources in total finally considerable differentiation exists in the economic characteristics of environmental goods these results demonstrate the considerable economic significance of environmental resources to rural households surveys which ignore them miscalculate rural incomes and welfare

discriminating monopoly forward markets and international trade recent empirical studies see e g kravis and lipsev 1977 1978 isard 1977 aspe and giavazi 1982 demonstrate that there are notable divergencies between domestic and export prices this empirical evidence suggests that the law of one price is systematically violated kravis and lipsey 1977 p 155 argue that many firms involved in international trade particularly manufacturers are in the position of a discriminating monopolist faced with separate markets each characterized by a different demand elasticity a model which explicitly allows for price discrimination has been used by several authors see for example aspe and giavazi 1982 ethier 1982 katz paroush and kahana 1982 and tarr 1979 katz paroush and kahana 1982 hereafter kpk used a model of a price discriminating firm which operates under price uncertainty to investigate its optimal level of output and sales in the two markets the main assumption made in kpk 1982 is that the firm determines its level of output and the allocation of sales between the two markets before the resolution of uncertainty furthermore no forward markets were available to this firm in this paper we analyze a price discriminating firm which sells its produce both in the domestic and on world markets under either exchange rate uncertainty or foreign price uncertainty this firm is a monopoly in the domestic market but a price taker on the world market our model differs substantially from the kpk model and in some cases conforms better with reality due to the following two assumptions first the firm determines its level of output before the resolution of uncertainty but decides about the optimal allocation of sales only after it observes the foreign price denominated in domestic currency secondly forward markets to share the exchange rate risk or the uncertain foreign commodity price are available and their impact on the firm s policy is analyzed hence this work integrates two strands of literature it combines studies on price discriminating firms some were mentioned above and studies on firm behavior when forward markets are available danthine 1978 holthausen 1979 katz and paroush 1979 feder just and schmitz 1980 in this paper we are mainly concerned with a firm which always exports this includes large