INCORPORATION OF SERVICES IN NATURAL RESOURCE-INTENSIVE GOODS: DESCRIPTION AND MEASUREMENT

South American countries play a key role in international markets of the so called Natural Resource Intensive Goods (NRIGs), in particular mining and food. It has been argued that this specialization pattern has disadvantages in terms of economic development, and both policy makers and academia repeatedly sustain the need to search for new international insertion schemes. In this paper we argue that one such avenue could be based on these comparative advantages themselves, and we ask how services can add value to the production and exports of NRIGs. To measure the relevance of economic infrastructure services on the competitiveness of NRIGs we develop a sectoral approach using domestic input-output tables for six Latin American countries. In particular, we measure Services value added incorporated in NRIGs, and we also analyse the impacts of productivity changes in infrastructure services on NRIGs producer prices. Results allow to identify which services are more important to each NRIG in each country. They also highlight that new instruments in trade and industrial policy must be developed to promote the specialized products services in NRIG. It is necessary to know the nature of the process that generates this new comparative advantage.


INTRODUCTION
The specialization pattern of South American countries is concentrated in NRIG (Vaillant, 2015), and the region's insertion in the international economy is limited to a small set of goods: only 52 products account for 70% of total exports. 1 The region has actually the highest rate of concentration of the first decile in the average period 2009-2012 compared to other regions of the global economy.Almost all goods in the first decile are NRIGs, the share of manufactured products is very low.Moreover, the set of products with revealed comparative advantage is also reduced: less than 500 products, which is much less than the world average of 800 products (Vaillant, 2015).
In other words, South American countries have economies with very low levels of export diversification.However, this long tradition also implies a huge accumulation and learning experience on how to intensify the exploitation of this type of resources in a sustainable way.In particular, the last stage of development, characterised by an important process of technical change in natural resources exploitation, has been very relevant.
The market size provides a sufficient scale for incorporating service-related activities (specialised knowledge business services -KIBS) and through this mechanism, it creates new types of trade specialisation patterns.
The servicification process can be widely defined as a business strategy that entails a shift from pure manufacturing to the production of goods and services.The term can be tracked back to Vandermerwe and Rada (1988).One of the consequences of this phenomenon is for national systems of economics statistics: if manufacturing firms increasingly become service providers, then figures potentially involve errors and omissions.At firm level, many of them have been undertaking such a path, mainly as a response to increased competition in their original product markets.This is the case of IBM, for example, which turned from computer manufacturer to a supplier of a whole range of system business solutions (Ahamed, Inohara, & Kamoshida, 2013), or the case of Rolls Royce that changed from an airplane engine supplier to a supplier of "power-by-the-hour", i.e., their customers sign a contract through which Rolls Royce ensures engines functioning all along the year by providing the proper maintenance.In Latin America, we also find evidence of servicification, where, by incorporating specialized services, some traditional natural resources may upgrade in value chains.In particular, 1 According to the Harmonized System at 6 digits (second edition).DESA/UNSD, United Nations (2016) Comtrade database.we can mention some examples of KIBS around seed innovation in Argentina and Brazil, the salmon industry in Chile or cattle traceability in Uruguay.
The incorporation of services into commodities is a complementary approach to their industrial processing, e.g. the more traditional use of logistics, transportation, communications, etc. in the production of goods.Both strategies yield simultaneous benefits in terms of job creation, technical progress, product diversification and quality improvement.However, policy recommendations may be different for each of them.Indeed, while downstream, traditional services associated with the production of goods (infrastructure, logistics, communications, insurances, etc.) may have a role in job creation and overall economic activity, servicification may also define new paths of sustainable growth in a highly integrated world.As mentioned above, services also play a key role in the technological upgrading of value chains created in or around natural resources.
How can services add value to the production and exports of natural resource intensive goods?Incorporating services into the production of goods allows both differentiation and consolidation in accessing new markets, as well as to generate an increment in the domestic value added, with higher contents of skilled labour.This productive strategy can achieve similar results in terms of creating greater domestic employment compared to conventional alternatives that focus on increasing production levels and industrial processing.Increasing domestic value added through service incorporation is particularly relevant for natural resources-intensive goods (NRIG), as these products dominate the export baskets of Latin American countries, especially those in South America.

Review of the literature
The most recent phase of the globalization process has led to a deep transformation in the international economy.One of the main characteristics is the permanent increase in both the intensive and extensive margins over the tradability of economic activities (goods and services).One of the sources behind this phenomenon is the acceleration of technical change in information and communication technologies (ICTs), together with a general reduction in trade costs (transport costs and other distance-related costs, plus trade policy variables), facilitating the fragmentation of production at a world scale with an increase in trade specialization.
The different stages of productive processes are now spread over different national jurisdictions, giving rise to the so-called Global Value Chains (GVC).A new international division of labor has emerged, that a new international trade theory names as trade in tasks (Grossman & Rossi-Hansberg, 2006).This process started in the modern manufacturing sector (transport equipment, electronics, optic machines, chemicals, and pharmaceutics) but is now extended to other economic activities (in particular, services).
Trade in intermediate goods and business services was traditionally relevant in international trade (Sturgeon & Memedovic, 2010;Hummels & Klenow, 2005), and the same phenomenon happens with services oriented to satisfy a demand of inputs in the production process (production services).Trade in intermediates is also an important channel through which technology is transferred from developed to developing countries.Amiti and Konings (2007) show that imports of intermediates and capital goods may improve the firm productivity.
Services are at the core of these new fragmentation phenomena as they have incremented their participation in world trade.Nowadays, trade in commercial services -only considering current account Balance of Payments data -represents more than 20% of the world trade; however, if the trade is measured in value added, this figure achieves half of the world trade (Escaith, 2008).
The conventional theoretical approach associates services to low rates of innovation and a low productivity path.In particular, this applies to services that satisfy final demand, which also gradually increases its weight in total expenditure.Examples of these services are typically haircuts, automotive repairs, travel, and tourism, or personal services such as day care, laundry or the like.This sustains the prediction of stagnation in total productivity ("Baumol disease" and Balassa-Samuelson effect).However, the changes described challenge this conclusion and give a very different picture (Francois & Hoekman, 2010).First, services associated with production as intermediate inputs increase its productivity and so the set of the others activities they are related to by intersectoral linkages.Second, many services associated with final demand changed positively their pattern of innovation and productivity, influenced by the same fundamentals, i.e. the ICT revolution.
The Kaldorian tradition claims that growth is related to the size of the manufacturing sector because it is associated with its positive externality over technological change and the productivity path (through different explicit and implicit mechanisms).However, there is evidence that things are changing.Meglio, Gallego, Maroto, and Savona (2015) highlight three elements: 1. Evidence of "premature deindustrialization" of many developing economies 2 in a context of good growth performance.2. The tradability of services has progressively increased, and value chains of production have globally expanded.3. High productivity gains are being experienced by certain service branches.
It is also important to differentiate between services associated with final consumption and services as intermediate inputs.The trade in tasks phenomenon is mainly associated with the latter, which are those demanded as inputs by other production processes.The fragmentation process requires an intensification in the use of services, mainly in the form of specialized services production.The fragmentation of production needs standardization and implies an intensive use of information technology, which is associated with the development of specialized production services.
The result is an increase in the intensity in the use of specialized production services that participate as an intermediate input in many different activities and types of firms.The empirical evidence goes from small firms to large multinationals, and from basic and food industries to the engineering industry.Three main factors explain this outcome in manufacturing (Lodefalk, 2015): 1. Service is a relevant factor to the increment in productivity, in particular through the use of services in logistics, management or engineering that save time, materials and improve coordination (Nordas cited by Lodefalk, 2015).Furthermore, these services are more intense in the use of skilled labour, which means the ability to absorb technical change is higher than in other sectors, with positive effects in terms of productivity.2. Adding services to goods can also be a profitable strategy: firms may differentiate their supply (augmenting their value) by bundling services with products or offer them in connection to their sales.By doing so, it will be easier for them to deal with the increasing international regulation on environmental and social issues.Many different types of barriers to trade require diverse types of certification that are associated with specialized services.With this strategy, the firms fulfil the norm and obtain a certification that is crucial to jump the trade barrier.
2 "The share of manufacturing in employment and value added is shrinking at levels of income per capita that are much lower of those at which the advanced nations began to de-industrialize" (Meglio, Gallego, Maroto, & Savona (2015).3. Manufacturing firms need services to establish, join and manage international production networks and value chains, including headquarter or business partner services, such as data processing and R&D services (Kelle cited by Lodefalk, 2015).All of them are associated with the coordination cost dimension related to the process of fragmentation of production in many different stages (Grossman & Rossi-Hansberg, 2012).
Finally, Arbache and Moreira (2015) propose a classification of services in two groups based on their role as inputs in the manufacturing sector: 1. Specialized production services.This includes value and innovation services, and refers to functions that contribute to adding value, differentiating and customizing products and, therefore, raising their market price and increasing labour and global productivity and the return on capital -usually composed of services that require relatively high levels of human capital (R&D, design, engineering and architecture projects, consulting services, software, specialized technical services, high-end IT services, branding, marketing, trading, among others).2. Cost services.This refers to activities that affect production costs through the use of economic infrastructure services (logistics and transportation, general infrastructure services, financial services, etc.).Vaillant (2015) analyses the first type of services, whereas here, we deal with cost services by developing and applying a methodology of value added service contents in commodities exports in a selected group of South American countries.
Coherently with the globalization of service production, it is possible to observe a process of expanding the scope of trade rules and topics in different types of trade agreement covering service activities.
3 Typically, services are a non-tradable, so regulations are established on a domestic perspective, i.e. covering national jurisdictions.When trade increasingly involves service activities, the demand for new international rules and the treatment of related topics also increase.
All these phenomena have an impact on the international trade policy agenda, which is usually dominated by market-access issues.How much 3 There are 120 preferential trade agreements in services notified to the WTO and actually in force.Almost all of them cover also goods and complementary matters, which shows through international agreements and disciplines the linkages between them.

Marcel Vaillant e Enrique Gilles
Revista de Administração Mackenzie -RAM (Mackenzie Management Review), 18( 6 access should be provided in my own market in order to get better access conditions in the neighbors' market?The fragmentation of international economic activity has strengthened the link between protection of one's own market and foreign market access conditions.Baldwin and Robert-Nicoud (2015) have pointed out that this is good news from the perspective of expected results related to the endogenous mechanisms of trade liberalization.The more it is perceived that reducing own barriers will also reduce the neighbor's barriers, the more open unilateral domestic trade policy will be.This mechanism seems to have started gradually acting in the trade of goods and particularly in certain manufacturing sectors that tend to converge to a trade of "zero tariff for zero tariff ".However, a negotiating effort is required to get improvements in some markets characterized by deeper distortions (certain sectors of agriculture and manufacturing, services, complementary matters).
Considering the new specialization phenomena that we contribute to identify in this paper, in the near future, the role of the service sector will be seen as an essential topic of the trade agreement negotiations agenda.Given the heterogeneous nature of this sector, which, as we mentioned before, includes final demand services but also specialized production services, domestic trade policies should take a differentiated approach.
Besides trade policies, these new developments call for renovated public policies for the development of specialized service providers that add value to natural resources, or increase their productivity capacity through innovation activities in a sustainable way.Traditionally, public policies for both the service sectors and the NRIGs are designed without any link, and their implementation is frequently in charge of different government agencies.The new phenomena imply a challenge to associate and to integrate different sectors in policies and regulations, new institutions, trade agreements, specific incentives, and specialized education at technological and university levels.

Methodological approach
In this section we link economic infrastructure services (EIS) to the set of commodities exported by South American countries, identified in Vaillant (2015).We will address the role of services, such as communications, finance, transport, distribution and logistics in the exports of natural resources.One way to measure their contribution is through the value added of those services embodied in the exports of NRIGs.At the same time, we will also look at the impact of the Service sector productivity and performance on the exports of natural resource intensive products.This type of services is included in the second category (cost services) defined by Arbache and Moreira (2015) and may be studied using conventional Input-output techniques.
Within that framework, a first approach to assess the role of services in NRIG can be conducted by analysing the intensity in production.This allows identifying industries which use services as intermediate inputs more intensively.A second approach to tackle the same objective is to analyse the value-added content of services included in the exports of NRIGs.
It is also possible to study the role of Services in the competitiveness of NRIG.To that end, we develop the Leontief price model as proposed in Gilles and Vallecilla (2015), which the main result is the change in sectorial prices as a result of changes in the value added (VA) of a given sector.We will use this framework to simulate the effects of an increase in productivity in the Services sector: such a process would translate into a decrease in value added.Indeed, as a sector becomes more productive we should observe a decrease in its share of VA in gross output.As noted in Gilles and Vallecilla (2015), "the model has been used in several environments to analyse different objectives.For example, Bazzazan et al. (2003) use it in the context of energy assessment policy; Davar (2006) discusses price discrimination issues with the model, while Folloni et al. (1993) evaluate different price formation hypothesis".
It is worth noting that this approach may fail to capture some part of price variations in case of non-competitive markets.Indeed, the methodology assumes a perfect pass-through going from productivity impulses to price reactions, an assumption that may be too strong in case of markets characterized by monopolies, oligopolies or other forms of imperfect competition.For the case of a heterogeneous sector, such as Services, in which we have both tradable and non-tradable activities and a variety of situations, we should be aware of this shortcoming.
We perform the above three analyses for six South American countries: Argentina, Brazil, Chile, Colombia, Peru, and Uruguay.In order to have a unified framework, we use the input-output tables provided by Global Trade Analysis Project (Narayanan et al., 2012), which correspond to 2007 and are expressed in millions of US dollars.The full description and details of the methodologies can be found in the Appendix A.  Services are going to be aggregated into six main categories (big sectors), which include infrastructure economic services (transport, trade, financial, public services), plus construction and other business services (see Table B2).

Domestic Value-added contents of NRIG exports in EIS
The results on direct requirements in the use of economic infrastructures services (EIS) by NRIGs can be seen in Chart B1.With this information, we compute the domestic value-added contents of exports, considering the aggregate use of the different EIS (cf.Chart 1).The share of these types of sectors is less than in the rest of the economy in almost all the sectors associated with NRIGs (see Table 1).Only for Brazil, in sector 35 (Ferrous metals) the share is greater than in the average global economy.In the mineral sectors, the intensity is typically greater than in the other commodities and close to the average of the economy (see the cases of Chile, Peru, and Brazil).In the NRIG sectors, the VAX ratio is typically high or the import contents of exports are low.This result is natural considering that this type of sectors is defined by the intensive use of domestic factors (natural resources).It is also important to highlight that we are only measuring the EIS (cost services, in Arbache and Moreira (2015) terminology) because conventionally specific product services are embodied in the gross value of each commodity sector. 5 However, there are three cases where direct and indirect intensity in the use of import is high: meat products (sector 20), in Argentina; ferrous metals (sector 35), in Brazil; other minerals (sector 18), in Peru.
Results on the total value added generated by NRIG exports disaggregated by type of EIS are presented in Chart 2 according to equation (A8) in Appendix A. In this case, it is possible to identify an association between the type of EIS service and the NRIG sector.We summarize the results in Chart 3.For Argentina, an intensive use of trade services and transport services is verified in chicken meat (20) and vegetable oils (21), respectively.In Brazil, the minerals sector ( 18) is associated with public services, as electricity, gas, and water (I); the beverage sector (26) in trade services (III); and, finally, in ferrous metals (sector 35) the intensity link is with public services (I), transport (IV) and financial services (V).For Chile, in minerals (18) the link is with public services (I).Finally, in Peru, also in minerals ( 18), the association is with other business services.

5
It is restrict to work with a high level of aggregation of the IO analysis, therefore, it could only be solved with more detailed and deep product case studies.

EIS productivity and prices competitiveness of NRIG
Finally, we present the results of the Leontief price model.As mentioned before, we are interested in analysing the effects of a 10% increase in EIS productivity on the prices of NRIGs.The definition of productivity we adopt is the one that relates total production to factor use (i.e. the reciprocal of the value added to gross output ratio); thus, the increase in productivity is modelled through a ceteris paribus decrease in value added in services, as detailed in equation (A17) in the Appendix.It can be discussed that such a decrease could be in turn the result of changes in technical coefficients (either domestic or imported).However, and for the purpose of simulations, the approach taken here is that there is independence between both variations, i.e. the change in productivity is not the result of changes in direct requirement coefficients.In Chart 4, we show the results of applying that productivity increase to each of the six different groups of EIS, with a final simulation of a simultaneous increase of 10% in all of them.Results should be interpreted as the price effect of that change on each of the selected NRIG and on the total production basket of the economy (using gross sectorial output as weights).As the first comment on these results, it can be noticed that the average impact of services on the prices of the economy is reduced.Moreover, this is particularly true for the selected commodities, which feature below-ofthe-average changes.In fact, these goods are generally in the low tale of the distribution of price impacts along the economy (minerals being the exception).The group of services which produces the largest impacts on prices in most countries is Trade services (III), followed by Transport (IV) and Other business services (VI).
For the Argentinean case, the impacts in sectors three (cereals); eight (other crops); and 21 (vegetable oils and fats) are low and are mainly explained by improvements in Trade and Other business service productivities.Sector eight presents a very low reaction (to any service improvement), whereas sector 20 (meat products) is affected by Trade and Transport services.
In Brazil, we find the highest impacts on prices.For example, sectors 18 (minerals), 26 (beverage and tobacco) and 35 (ferrous metals) are the most influenced, mainly by Transport, Trade and Other business services, as well as Financial services.Importantly, minerals and ferrous metals price reactions to changes in electricity, gas and water services productivity lie above the price impact of the latter on the whole economy prices.This is consistent with the fact that these NRIG are closely related to group I services, as mentioned in Chart 4.
The same over-reaction is also found in the Mineral sector in both Chile and Peru, whereas the figures for Colombia are extremely low.In Uruguay, the most important service group in terms of its impacts on NRIG competitiveness is Financial services; however, the size of the impact is low.
Overall, we could present results of the association of service productivities and NRIG competitiveness by simply using Chart 4 and changing its title.The main intuition is that commodities benefit from productivity changes of services according to the intensity in their respective production functions.

CONCLUSIONS
The initial motivation of this paper is that NRIGs are an important feature of the South America trade pattern.This continent is also a relevant supplier of this type of products in the world market (Vaillant, 2015).Policy makers in the region repeatedly sustain the need to search a path for the transformation of this pattern of specialization.The question is: how can services add value to the production and exports of NRIGs, and could the region benefit from the improvement of services to eventually become their net exporter?In this paper, we give some new information that will be necessary to answer this question.
One of the characteristics of the current era of globalization is the increase of the intensity in the use of specialized production services that participate as an intermediate input in many different activities and types of firms.The ability of the new technologies to penetrate in all kinds of activities is one of the most important features of the changes to the production functions all over the world.This means servicification may be possible in many different activities and not only in dynamic manufacturing sectors.Our paper focuses on the identification of the phenomenon in the case of natural resources-intensive goods (NRIG) in South America.
Following Arbache and Moreira (2015), we distinguish two types of services: specialized production services and cost services (mainly from economic infrastructure services).Two different methodologies are used to study the servicification process in each type of services.
An indirect methodology is applied to identify the group of products and countries in which an increment in the use of specialized production services could be observed, based on the performance of the trade data in a recent period (2000s).Food and raw materials is the first subset composed of 12 products that are identified with dynamic behaviour combined upon relevance in the world market.For minerals sectors, eight products fulfil the set criteria.Six South American countries export this set of 20 NRIGs.
Additionally, a review of recent literature about specialized production services in a set of NRIG is proposed.This shows that the big scale of regional markets in NRIG, the intensification of production combined with the acceleration of technical change together with the increase requirements in standardization and certification (both at the domestic and international levels) are the environment where specialized production services (in particulars new KIBS) are developed.Sectors with strong RCA (NRIG) generate domestic interlinkages, which imply an incentive to develop new economic activities.These markets are huge at international level and they can create a representative demand in particular for the regional countries.Based on this critical mass, new competitive services activities, which have the potential to be internationalized, could be developed.It seems like a combined Hirschman and Linder mechanism, as referred by Gonzalez, Meliciani y Savona (2015).
For the analysis of the impact of the second type of services (EIS), we used a conventional input-output methodology.The analysis is developed for the six South American exporters in twelve sectors (the 20 NRIGs mapped in 12 sectors, which nine are food and raw materials, and three are We developed two types of indicators to approximate the relevance of EIS in NRIG.First, we measure the domestic value-added contents (by subtype of EIS) in each combination country-NRIG sector export.Naturally, in NRIG sectors, the use of EIS is lower than in the rest of the economy for all countries.However, the relevance of EIS is greater in minerals sectors and, in some cases, it is close to the average of the economy.The disaggregated results show different types of associations between EIS and specific NRIG sectors.
Finally, we present the results of the price model, which produces price effects on commodities following the increases in EIS productivity.The general line of the association between EIS services and NRIG sectors is the same.However, we give evidence about the size of the effects considering how prices are affected by an increase in the productivity of transport services.The main impact is observed in the case of Brazil with the public service (I) productivity increasing, what implies a decrease in the price of ferrous metals (35).The effect of transport service (IV) is relevant in the price of the vegetable oil sector in Argentina, and a positive shock in productivity of other business services (VI) has a positive impact on competitiveness in metals (36), in Chile, and minerals (18), in Peru.
These results can also be interpreted from a global value chain perspective.Although South American countries have a very low integration to global production, their role is found in the supply of raw materials and commodities, which as it is well known, has a low potential for employment, human development, and innovation.The challenge for these countries is to use their comparative advantages in NRIGs to develop specialized production services in turn that may be successfully integrated into other global value chains.In the case of economic infrastructure services, they are more related to domestic economic and structural conditions, but they may give rise to regional value chains, another aspect in which South America is lagged behind compared to the experience in other regions'.
New instruments in trade and industrial policy must be developed to promote the specialized products services in NRIG.It is necessary to know the nature of the process that generates these new comparative advantages.A deep understanding of the dynamic process of interaction between scale economies and the internationalization of this type of firms is required to reinforce this new structure of production.More case studies must be done to know the mechanism of this development process.Finally, the results where i is a vector of ones.We can also express the import contents as a proportion of total exports, ( ) where () D is the diagonal operator.However, what we want to know is the composition of domestic value added by sector of origin and linked to foreign demand (exports).So, we need to use the vector of the ratio of domestic value added to gross output, defined as In matrix terms ( ) ( ) Then, the domestic value-added contents in total exports (by sector) is given by: In turn, we disaggregate this value added by each sector of the foreign demand (export vector).Then the domestic value added by sector in exports is: where VD e is a square matrix of dimension n, in each column we have the domestic value added generated in a specific sector as a result of exports of each sector (rows).Given the above, it holds that:

Table B1
Elaborated by the authors.Elaborated by the authors.Elaborated by the authors.