nonrenewable resource scarcity nonrenewable resource theory often is summarized by hotelling s rule this paper reviews theoretical extensions and empirical investigations of resource extraction models observed data are often inconsistent with the hotelling rule suggesting that other characteristics of nonrenewable resource supply including exploration heterogeneous ore quality technological progress and capital investment are important determinants of the dynamic behavior of resource prices given the persistent recurrence of concern about nonrenewable resource scarcity measures of nonrenewable resource scarcity and the empirical evidence for the time trends of those measures are reviewed finally the implications of nonrenewable resource scarcity for economic growth are examined

capacity choice and the theory of the mine when extraction from mineral deposits is constrained byfixed capacity an r per cent rule holds this deposit specific rule however is more partial than hotelling s rule in that it is followed byprice takers and does not require price to adjust to produce equilibrium toobtain the resource rent to which the rule applies the shadow value ofcapacity must be subtracted from the usual net price i e price lessshort run marginal cost but the shadow value of capacity cannot becalculated from common depreciation formulas an alternative method ofcalculating the shadow values is derived the shadow value of reserves maybe increasing in the level of initial reserves if there are increasingreturns to installing capacity the value of the resource is not equal tothe discounted resource rent

nonconvexity efficiency and equilibrium in exhaustible resource depletion we consider the problem of efficiency and existence of a competitive equilibrium in exhaustible resource markets where extraction costs are nonconvex nonconvexity is shown to imply that 1 efficient extraction ceases to the left of the minimum efficient scale i e where average costs exceed marginal costs and 2 a competitive equilibrium does not exist introduction of a backstop technology which induces a flat portion of the industry demand curve restores both existence and efficiency provided that the backstop price is sufficiently low if firms face even a small amount of uncertainty regarding their rivals stocks a backstop technology is sufficient to restore existence of competitive equilibrium even if the backstop price is very high in this case however the competitive equilibrium is not efficient

a microeconometric test of the theory of exhaustible resources abstract this paper generalizes extant developments of the economic theory of exhaustible resource production derives and extends a halvorsen and smith 1991 quarterly journal of economics 106 123 140 type test of the theory and applies the test to a sample of natural gas resources to facilitate our empirical test we extend the model developed in chermak and patrick 1995 journal of environmental economics and management 28 174 189 to explicitly account for the fact that the extracted resource gross product must be processed to obtain the final saleable product duality theory is used to derive econometric models with which the theory is statistically tested using panel data from 29 natural gas wells shadow prices of the resource stock through time which are generally unobservable but necessary for the test are estimated via the indirect cost function contrary to the extant literature we find inter alia that i at any point in time ceteris paribus the in situ resource price a decreases with gross production and b increases with final production and ii we cannot reject the theory of exhaustible resources i e producer behavior is consistent with the theory

the takeover deterrent effect of open market share repurchases this paper examines whether open market share repurchases deter takeovers we model pre repurchase takeover probability as a latent variable and examine its impact on the firm s decision to repurchase shares given specification tests reject the tobit model we turn to the censored quantile regression method of powell 1986 journal of econometrics 32 143 155 we find a significantly positive relation between open market share repurchases and takeover probability and we reconcile empirical findings in previous studies that contradict predictions repurchase activity is inversely related to firm size consistent with smaller firms having greater information asymmetry and is related to temporary but not permanent cash flows

the elephant in hotelling s room this paper questions the assumption commonly used in theoretical and policy research that scarcity rents make up a large proportion of market prices for oil and coal we show that the empirical literature simple calculations of historical and future scarcity rent shares and possible theoretical explanations all imply the same overall conclusions that scarcity rents seem to have been marginal or non existent historically that they almost certainly do not dominate fossil resource prices today and that there will be other factors shaping the prices in the upcoming decades we therefore argue that using the scarcity rent as the main or only basis for policy or for explaining empirical outcomes is ill advised

a demand scenario based fuelwood supply chain a conceptual model abstract fuelwood is one of the main fuels for heating in many countries as the price of fuelwood is relative low comparing to oil or gas demand for fuelwood rises over the years a supply chain is considered by different nodes that are essential for some operations concerning transportation and production due to the sensitive nature of the forest which is the production plant in the examined supply chain certain restrictions concerning the production and distribution of fuelwood should be taken into account a more environment oriented production model should be developed taking into consideration the sustainable management of the forests for this purpose a mixed integer linear programming milp model is considered in modeling uncertainty for fuelwood demand moreover the minimization of the overall operations cost is examined under different fuelwood demand representations using lagrangean relaxation algorithm

existence of equilibria in exhaustible resource industries nonconvexities and discrete vs continuous time abstract i demonstrate in a very general model that decreasing or u shaped average cost curves always rule out competitive equilibrium in continuous time models of extractive industries discrete time models of these industries however can have competitive equilibria existence of competitive equilibria in the presence of nonconvexities is sometimes more and sometimes less problematic for extractive industries than for industries making a producible commodity

the cut off grade and the theory of extraction the cutoff grade problem arises when technological infeasibility or high cost prevents an extractive firm from exploiting a heterogeneous deposit in strict sequence the optimal cutoff grade varies directly with anticipated changes in present value price a stochastic price path induces a higher lower initial cutoff grade if the marginal profit function is concave convex the optimal response to an unanticipated price change depends on the difference between the rates of change in price along the new and original price paths and whether or not the firm can increase extractive capacity including the life of the mine

the fuelwood market in greece an empirical approach abstract wood has been since ancient times the basic household heating medium nowadays wood remains the primary energy source in rural areas of developing countries mainly in africa in greece the domestic demand of fuelwood is relied mainly on the fuelwood domestic supply especially during the post war period the domestic supply satisfies adequately the domestic demand eliminating the role of imports the present study surveys the long run relationship between the fuelwood prices of different forest species in order to determine the role of the special market conditions in their price formation in addition the error correction model is estimated in order to survey the direction of the granger causality among the prices of the fuelwood forest species the implementation of the impulse response analysis and the variance decomposition confirmed that coniferous and beech fuelwood producer price may account for the volatility of the oak fuelwood producer price this result may contribute greatly to the conservation of oak forest an important carbon storage forest ecosystem

the fuelwood crisis and the environment problems policies and instruments the paper defines the third world fuelwood crisis in a broad development context in terms of the implications of fuelwood scarcity and environmental damage for private and public choice it shows how the identification of the nature of the policy problems underlying the crisis influences the objectives and instruments of energy policy the paper concludes that to get energy policy to try to be responsible for rather than to take account of the wider context is likely to make policy ineffective

electricity consumption and economic growth in burkina faso a cointegration analysis abstract this study empirically establishes the direction of causality between electricity consumption and economic growth in burkina faso for the period 1968 2003 the bounds test yields evidence of cointegration between electricity consumption gdp and capital formation when electricity consumption and gdp are used as dependent variable causality results indicate that there is no significant causal relationship between electricity consumption and investment estimates however detect in the long run a bidirectional causal relationship between electricity use and real gdp there is also evidence of a positive feedback causal relationship between gdp and capital formation burkina faso is therefore an energy dependent country it is also a country in which electricity consumption is growing with the level of income all of this shows that electricity is a significant factor in socio economic development in burkina faso as such energy policy must be implemented to ensure that electricity generates fewer potential negative impacts

futures markets price stabilization and efficient exploitation of exhaustible resources markets for natural resource futures contracts and cash forward contracts experience a rapid growth according to theory this should result in more efficient resource depletion implying that price formation is more consistent with hotelling s rule the rationale of this stabilization effect is briefly discussed next we analyze the impact of expanding futures markets on the behaviour of individual resource owners trading on the cash market using a simple pulse extraction model we demonstrate that the expected time of depletion can shift to the present or the future and that utility of exploitation can go up or down as market prices are stabilized

how do oil producers respond to giant oil field discoveries abstract the classical hotelling model predicts that the optimal extraction level rises immediately after an unexpected resource discovery whereas in reality there are substantial adjustment costs in petroleum production and an average lag of several years between a discovery and the start of production using a large panel of country level production data and a difference in differences identification approach i show that domestic production levels respond before a newly found oil field comes on line and that this increase is driven by non opec producers consistent with different responses of opec and non opec drilling activity offshore fields and exceptionally large super or mega giant fields are also more likely to raise country level production given that domestic petroleum consumption rises by less in response to a discovery at least part of the increase in production seems to go into net oil exports

testing the efficiency of extraction from a stock resource the theoretical conditions for efficient extraction from a known stock resource by a competitive mining firm are reviewed these conditions are tested using proprietary data from a mining firm output price data and coefficient estimates from a translog cost system are used to compute the in situ value of the resource and the stock effect changes in the in situ value over time are then statistically compared with the expected price path the results reject the hypothesis that the data are consistent with the theoretical model and the maintained hypotheses variations of the basic model that incorporate a time varying discount rate an alternative expected price series and a constraint on the rate of output are also tested and rejected 46 references 10 tables

existence and transversality conditions for a general unbounded horizon model of the mining firm abstract this paper derives conditions under which optimal programs exist for a general model of the competitive or monopolistic mining firm the model significantly extends and synthesizes previous formulations by including both resource extraction and discoveries of new reserves with stock dependent resource exploitation costs and incomplete resource exhaustion endogenous technical innovation and state dependent resource demand in addition the analysis addresses complications arising from having optimal programs defined over an unbounded horizon with the possibility of either a finite or infinite terminal time and a non zero terminal salvage valuation if the terminal time is finite the necessity of the infinite horizon transversality conditions also is established the paper illustrates a strongly intuitive approach to existence questions for infinite horizon or unbounded horizon control problems with weaker concavity and interiority assumptions than are often encountered in the literature

an econometric analysis of residential consumption of fuelwood in a mountainous prefecture of northern greece abstract biomass is a renewable energy source of increasing importance especially since the energy policies of countries today are largely focused on renewable energy it is a renewable energy source with significant potential to contribute to the energy needs of modern society both for developing and developed countries around the world one very important source of biomass is wood and fuelwood in particular this article aims at providing an empirical analysis of household fuelwood consumption and the determinants of the choice to use the specific energy for heating and cooking in a district of northern greece in the current empirical analysis several household fuelwood consumption models are employed such as glm tobit and heckman regression based techniques the results show that household sociological and economical characteristics as well as more general environmental issues are suitable to explain differences towards fuelwood consumption for space heating and cooking we additionally evaluate the household fuelwood consumption for heating through the statistical analyses conducted

steady state growth in a hotelling model of resource extraction this paper re examines the hotelling model of optimal nonrenewable resource extraction in light of stock effects and technological progress we assume functional forms for cost and demand so that the solution to the hotelling problem is a steady state consistent with the empirical observation that the growth rates of market prices have remained zero over a long period of time we use data on 14 minerals from 1970 to 2004 to estimate the supply and demand functions using sur and 3sls and to test the model we validate the model for 8 of 14 minerals c 2007 elsevier inc all rights reserved

reserve characteristics and mining costs an empirical study of the phosphate industry this paper deals with an estimation of phosphate mining cost function here it is argued that other characteristics of reserves besides their size could be quite important in the cost function the result of a cross sectional analysis of phosphate mining in the world shows that reserve size and average total cost have a positive and modest statistically significant relationship in one of the two models among many qualitative characteristics and location factors tested in this paper overburden grade ore product ratio water availability and the price of capital are significant with expected signs finally the results confirm the existence of economies of scale in phosphate mining which seem to be more related to mining technology than to reserve size

the construction of tender offers capital gains taxes and the free rider problem shareholders are less likely to tender shares in the first stage of a two tier offer than in an any or all offer this is inconsistent with the view that two tier offers overcome the free rider problem this article shows that two tier offers with a fully taxable first stage and a nontaxable second stage are structured to induce shareholders with low capital gains tax liabilities to accept the first stage and shareholders with high capital gains tax liabilities to accept the second stage in offers where both the first and second stage compensations are taxable high tendering rates occur in the first stage copyright 1988 by the university of chicago

taxation ore quality selection and the depletion of a heterogeneous deposit of a nonrenewable resource abstract the effect of taxation on depletion is examined when ore quality varies within a deposit and the firm s selection of the sequence of exploitation is constrained tax policies in this setting are less conserving of the resource than if ore quality is homogeneous and can be less conserving of the resource than in other models of ore quality selection for example a constant severance tax can induce faster depletion decrease the life of the mine reduce total recovery and increase metal output in periods when extraction is positive

cost specification and firm behaviour in a hotelling model of resource extraction in applied resource economics much attention has been focused on the ability of the hotelling model to explain observed firm behavior in this paper a preliminary specification search is performed to determine the appropriate cost function parameterization for the firms in the sample before proceeding to the estimation of the euler equation once a cost function specification is chosen the corresponding euler equation is estimated via the generalization method of moments gmm which allows for better estimates of the euler equations than in previous studies even with the preliminary specification search and the use of gmm estimation the behavior of the panel of fourteen canadian copper mining firms in the data set examined does not seem to be consistent with the basic hotelling model used

does stock price elasticity affect corporate financial decisions abstract this paper considers whether stock price elasticity affects corporate financial decisions basic economic principles and the existing theoretical literature predict that firms choosing the dutch auction instead of the fixed price tender offer should be those firms expecting to face greater stock price elasticity econometric analysis suggests that firms choosing the dutch auction instead of the fixed price tender offer between 1984 and 1989 are indeed those firms expecting to face greater stock elasticity even though the average realized elasticities of the firms conducting the various tender offers fail to be significantly different the expected elasticity remains an important determinant of the tender offer choice even when allowing for firm characteristics associated with the choice of repurchase method firms facing greater elasticity are also characterized the findings suggest that expected stock price elasticity may be an important determinant of corporate financial decisions that affect the supply of or demand for stock

a quest for the economics of sustainability and the sustainability of economics abstract this paper briefly reviews key insights from natural resource and environmental economics ecological economics and industrial ecology in an effort to identify the major contributions of these fields to the understanding and promotion of sustainable development each is based on overlapping worldviews methods and tools their synthesis and extension subsumed under the rubric of natural economics is suggested as a new thrust in environmental research offering valuable guides to policy making an early illustration of the application of natural economics in new zealand is presented

the determinants of tendering rates in interfirm and self tender offers the authors estimate the determinants of shareholder heterogeneity by examining the shareholder responses to fixed price self tender offers and two tier interfirm tender offers tendering rates are increased in the cash price relative to the postoffer price of the stock proxies for capital gains tax liabilities also explain tendering rates controlling for the cash tender relative to the postoffer price of the stock the authors find that tendering rates are significantly higher in interfirm tender offers than in self tender offers which indicates that shareholders view accepting another firm s stock as an unattractive means of avoiding capital gains copyright 1992 by university of chicago press

estimation of market power in a nonrenewable resource industry in nonrenewable resource industries the existence of a markup of price over marginal market cost may reflect the existence of an implicit user cost for the resource rather than market power we show that valid estimates of market power can be obtained by the joint estimation of a restricted cost function and an inverse supply relation estimation of the model with data for the largest firm in the international nickel industry indicates that output price substantially exceeded marginal market cost with most of the difference due to the exercise of market power rather than the user cost of the resource

urban fuelwood challenges and dilemmas abstract this paper explores the use of fuelwood in third world cities the importance of fuelwood and the factors which condition its use in cities are set out and three fuelwood problems are identified the cost to urban consumers fuel supply security and the impact of urban fuelwood markets on rural areas urban fuelwood interventions are evaluated with four categories identified interventions in marketing conservation increased wood production and fuel switching of these fuel switching by improved supply systems and increased production from smallholders and better management of natural woodlands appear to have the greatest potential the need for flexibility community participation in planning is stressed

tax policy can change the production path a model of optimal oil extraction in alaska we model the economically optimal dynamic oil production decisions for seven production units fields on alaska s north slope we use adjustment cost and discount rate to calibrate the model against historical production data and use the calibrated model to simulate the impact of tax policy on production rate we construct field specific cost functions from average cost data and an estimated inverse production function which incorporates engineering aspects of oil production into our economic modeling producers appear to have approximated dynamic optimality consistent with prior research we find that changing the tax rate alone does not change the economically optimal oil production path except for marginal fields that may cease production contrary to prior research we find that the structure of tax policy can be designed to affect the economically optimal production path but at a cost in net social benefit

the time path of scarcity rent in the theory of exhaustible resources there is now a consensus in the literature on resource economics that a depletable resource should command a price in excess of its marginal extraction cost simply to reflect the opportunity cost of using a unit of it today rather that conserving it for the future but how this excess is to change along an optimal or competitive equilibrium path of resource use is still an unresolved question this might at first seem puzzling since according to the fundamental theorem of economics of exhaustible resources or hotelling i 93 i rule on an optimal path price minus marginal extraction cost also termed interchangeably as scarcity rent user cost or royalty should steadily grow over time at the social rate of discount however the literature contains sharply contrasting views on the subject for example kay and mirrlees 1975 have argued that since along an optimal path the scarcity rent grows exponentially as a finite stock of a resourcexnears exhaustion then situations in which the resource stock is still very large and yet the price greatly exceeds the marginal extraction cost should indicate that the price is significantly above its optimal level and that the resource is overconserved in stark contrast to this view heal i976 has argued that as the resource stock nears exhaustion the difference between price and marginal cost or what he termed social cost of extraction falls monotonically to zero hanson i980 analyses the same model as heal s but unlike heal who assumes the unit extraction cost to be convex he postulates it to be concave and yet like heal concludes that the scarcity rent will be monotonically declining over time solow and wan i976 analyse a still different situation where resource deposits differ in quality and the unit extraction cost increases as higher grade deposits are exhausted and extraction proceeds to lower grades they show that along an optimal path the shadow price of a resource must rise at the real rate of interest despite differential extraction costs but that the difference between price and the marginal extraction cost or what they call degradation charge declines monotonically over time to zero these sharply differing conclusions suggest that far from being resolved the question of how scarcity rent changes over time is much in want of a close scrutiny the need for such a scrutiny becomes even stronger once it is noted

a model of the operation and development of a national oil company we present a model of the exploration and development activities of a national oil company noc which uses similar technology to a private firm to extract a depletable resource however unlike the private firm the noc may have a wider range of objectives than maximizing the present value of profits specifically we assume an objective function that balances firm profitability against a political desire to favor domestic consumer surplus and domestic employment we find that the non commercial objectives faced by a noc tend to reinforce each other in their effects on profitability the timing of cash flows and employment

the mode of acquisition in takeovers taxes and asymmetric information we develop a model in which the mode of acquisition conveys information concerning the value of the bidder the model incorporates the possibility that offers containing both cash and stock can be made in a setting consistent with the u s tax code we demonstrate that bidders with unfavorable private information about their equity value choose offers containing some stock to avoid the capital gains tax consequences of cash offers the model yields a number of unique predictions about the construction of acquisition offers we present evidence consistent with the model when one firm acquires another it can pay for the acquisition with cash stock or a combination of the two recent studies find that announcement returns to bidding firms who make cash offers are higher than when stock offers are made models consistent with this evidence note that as in myers and majluf 1984 a bidder with private information about the value of its assets only offers stock when its shares are overvalued by target shareholders recognizing this adverse selection target shareholders reduce their estimate of the bidder s value thus without some benefit in stock over cash as a means of payment a lemons problem arises for stock offers and bidders only choose cash offers our paper advances the use of stock in an offer through its tax advantages in the united states to realize the benefits available in nontaxable offers an offer must contain at least fifty percent stock thus when the bidder has private information about the value of its assets stock off6rs can still occur because of their tax advantage the intuition is as follows target holders can postpone the realization of capital gains when they receive stock in a takeover so other things equal they demand higher prices in cash takeovers while the offer of stock may have tax advantages the shares swapped are valued by the target as if they were offered by the average bidder making a stock offer thus a pool of higher private valuation bidder types choose cash offers in spite of the tax consequences a pool of lower private valuation types

predicting fuelwood prices in greece with the use of arima models artificial neural networks and a hybrid arima ann model abstract throughout history energy resources have acquired a strategic significance for the economic growth and social welfare of any country the large scale oil crisis of 1973 coupled with various environmental protection issues have led many countries to look for new alternative energy sources biomass and fuelwood in particular constitutes a major renewable energy source res that can make a significant contribution as a substitute for oil this paper initially provides a description of the contribution of renewable energy sources to the production of electricity and also examines the role of forests in the production of fuelwood in greece following this autoregressive integrated moving average arima models artificial neural networks ann and a hybrid model are used to predict the future selling prices of the fuelwood from broadleaved and coniferous species produced by greek state forest farms the use of the arima ann hybrid model provided the optimum prediction results thus enabling decision makers to proceed with a more rational planning for the production and fuelwood market

information and exhaustible resources a bayesian analysis abstract we develop a continuous time bayesian model of investment in information about an exhaustible resource because of the way that information affects expectations the deterministic hotelling rule turns out to be more appropriate as a description of how resource owners forecast the value of their stocks than as a predictor of observed changes in the resource price a flow of information generates both unanticipated changes in expectations which cause the mean rate of change in the resource price to deviate systematically from the deterministic hotelling rule and reductions in uncertainty which do not affect the hotelling prediction

a hotelling faustmann explanation of the structure of christmas tree prices we examine the relationship between a tree price and a tree age height using a hotelling faustmann type model of optimal plantation management which accounts for the possibility of replanting and biological growth the model predictions are tested using the data on christmas tree prices in north carolina collected in december 1997 the estimates show that in general the rates of change in prices between adjacent age cohorts reflect a competitive equilibrium in the capital market thus supporting the hotelling faustmann paradigm rigorous empirical testing of the basic economic models of optimal natural resource pricing has proven to be difficult the source of the difficulty has been the unavailability of micro level data on either prices or extraction harvest rates for in situ resource stocks 1 for nonrenewable resources hotelling s famous pricing rule has rarely been tested with firm level data stollery s study of the international nickel company of canada supported hotelling s rule and miller and upton s study of oil company values supported a corollary called the hotelling valuation principle most other studies such as halvorsen and smith and farrow have refuted this bedrock of natural resource economics in fact two studies of old growth timber essentially a nonrenewable resource provide some of the most compelling support for the hotelling model berck johnson

uncertainty and the convenience yield in crude oil price backwardations abstract this study examines why firms hold stocks of crude oil particularly during price backwardations when spot prices exceed prices for forward delivery using a stochastic control model this paper shows that the equilibrium value of inventories contains the conventional hotelling principle the convenience yield from the classical theory of storage and an option value related to price uncertainty our empirical results suggest that a convenience yield and risk premium are important elements of crude oil price backwardations

tax induced trading the effect of the 1986 tax reform act on stock market activity the end of favorable tax treatment for long term capital gains caused investors to reassess traditional tax induced trading strategies this study compares trading behavior in december 1986 and january 1987 with previous years our results indicate that these tax code changes had a powerful effect on trading behavior relative trading volume was considerably higher in december 1986 for long term winners but not significantly lower for long term losers results also indicate altered trading patterns based on shortterm gains in december 1986 and for long term winners in january 1987 the most sweeping revision of the united states tax code in many years became law in september 1986 one key aspect of that law was the elimination of the favorable tax treatment of long term capital gains under prior law capital gains on assets held at least six months were generally1 taxed at only forty percent of the rate applied to ordinary income under the new tax law assets sold after december 31 1986 are to be taxed with a few exceptions 2 at the same rate at which ordinary income is taxed this change represented the largest capital gains tax rate increase in at least half a century the purpose of this study is to assess the short run investor reaction to this change in the tax treatment of capital gains the nearly four month lag between the passage of the legislation and the effective date of the tax rate change gave investors ample opportunity to assess the law s consequences for their portfolios and adjust their behavior accordingly since investors are seeking to maximize the risk adjusted after tax return on their portfolio this record increase in capital gains tax rates is likely to induce significant changes in investment strategy the extreme sensitivity of capital gains realizations to the capital gains tax rate by holders of common stock has been frequently demonstrated a permanent or long term and recurring investor response is evidenced by the findings of