The Spatial Externalities of Tourism Activities in Poverty Reduction

: Poverty is one of the main indicators of economic development worldwide, in such a way that one of the Sustainable Development Goals is to eradicate poverty in all its forms worldwide. The objective of this research was to examine the e ﬀ ect of the gross value added (GVA) of tourism on poverty in the 198 contiguous Ecuadorian cantons. The methodology used was the application of a set of spatial econometric models to capture the regional e ﬀ ect of tourism on poverty. Data were obtained from the Central Bank of Ecuador and the National Survey of Employment, Unemployment and Under-Employment of the National Institute of Statistics and Census (INEC). The results show that tourism activities and regional poverty are negatively related; thus, a 1% increase in tourism-related economic activity decreases the regional poverty of the canton itself by 4.31%, and that of neighboring cantons by between 0.7% and 2.4%. The inclusion of the control variables shows that schooling and the mestizo population contribute to reducing the canton’s poverty, since the regions with a high GVA of tourism have high levels of schooling and a mestizo population. Thus, regional poverty increases when the level of schooling increases in neighboring cantons. On the other hand, in cantons with a high Mestizo population, compared to the African-American population, the poverty of the canton and its neighboring regions decreases. Public policy measures which aim at reducing poverty must take into account spatial spills from tourist activity in the cantons. This examined the e ﬀ ect of the gross value added of tourism on regional poverty in Ecuador, using basic econometric and spatial models to examine the role of neighboring regions in determining the poverty of Ecuadorian cantons. This study made a novel contribution in that there have not been any previous studies that analyze the relationship between poverty and tourism in The contribution is very signiﬁcant; the results of the study indicate that and tourism activities are negatively related in the same canton, and with the that is to say, the in the tourist activity of a canton the of the canton and its Furthermore, is by the in informal-sector can or improve to as the factors the tourist which is typical contributes to the Additionally, there are e ﬀ ects cantons


Introduction
The World Tourism Organization [1] (p. 5) states that "tourism consists of travel and stays people undertake in places other than their habitual surroundings, for periods of more than a day and less than a year, for leisure, business or other motives". Consequently, strengthening tourism favors regional economic and social development. Tourism produces important effects on the national income by generating foreign exchange for the country in which it is carried out and providing important direct and indirect benefits for people as an important source of employment. Thus, tourism constitutes an important part of the Gross Domestic Product (GDP) of most countries.
Tourism is the most rapidly growing economic sector worldwide [2]. According to the World Tourism Organization (UNWTO), there were 1.4 billion international tourist arrivals worldwide, to receive tourists from all over the country. The rest of the establishments are divided into small groups, such as intermediation, recreation, tourist transport and community tourism centers.
According to the Ecuadorian Ministry of Tourism [14], tourism generated 552,508 jobs in the third trimester of the present year, which represents a 1.8% increase over the same trimester of the previous year. The balance of foreign exchange for tourism was 393 million dollars, which represented an increase of 6.1% over 2018. In contrast, according to data published by the National Survey on Employment, Unemployment and Under-Employment [15], the poverty rate rose from 23% in 2018 to 23.9% in 2019, while urban poverty increased by 2.1% and rural poverty decreased by 1.5% in 2019, compared to the previous year. As the statistics show, tourism is growing in Ecuador, but so is poverty. The latter-associated with the fact that poverty in Ecuador is the subject of particular analysis-was described by Correa-Quezada et al. [16], who held that some regions in Ecuador are located in a 'poverty trap'.
The objective of this research was to examine the effect of tourism-related gross value added (GVA) on regional poverty in Ecuador using ordinary least squares (OLS) analysis, and to analyze the effects of spatial spillovers on poverty through the application of spatial econometric models: the spatial autoregression model (SAR), the spatial error model (SEM), and the lag and spatial error model (SARMA), which combines the SAR, SEM and spatial Durbin error models (SDM). The analysis considered the 198 contiguous cantons of Ecuador, excluding the province of Galápagos, which-as an island-does not have contiguous territory, because of which the estimators of the spatial models for it are less consistent or efficient. Finding the determinants of poverty in developing countries is very important, as it is one of the main objectives of sustainable development.
The data for 2018 were obtained from the databases of the Central Bank of Ecuador [17] and National Survey on Employment, Unemployment and Under-Employment (ENEMDU) [15]. Regional poverty was used as a dependent variable and tourism gross value added (GVA) was used as the independent variable. To validate the robustness of the estimators, covariates were used; namely, the level of schooling, the level of unemployment, ethnicity, and informal-sector employment (self-employed). This study supports the hypothesis that regional poverty is determined by factors in contiguous regions.

Literature Review
The tourism-poverty nexus has been explored theoretically [18][19][20][21] and empirically [18,22,23]. Zhao and Ritchie [24] identified a set of research needs and opportunities in this field. There is no definite consensus on the effect of tourism on poverty reduction. Li et al. [25] analyzed 346 articles from 11 tourism-related journals published between 2000 and 2014. They found positive, negative and null effects of tourism on poverty. Tourism has become the subject of major research in the last decade [26]. This literature review shows that numerous studies highlight that tourism development improves poverty indicators [27][28][29]. In contrast, other studies, such as that of Blake, Saba, Sinclair and Teles [10] on Brazil, show that the income generated by tourism activities does not always favor the poorest class, but rather benefits the people who own the means of providing tourism services.
Toward the end of the 1990s, a strategy termed Pro-Poor Tourism (PPT) was developed in Great Britain in order to incorporate the poor into the capitalist market through the interventions of commercially viable tourism projects that increase employment and opportunities for entrepreneurs, benefitting poor individuals and collectives of the poor [30]. The approach draws on the empirical evidence [10] that low-income households benefit from the effects of government programs to promote tourism. In this way, the expansion of tourism is directed specifically towards the lowest income groups.
According to the Tourism Alliance against Poverty [31], tourism that favors the poor results in increased net profits for the poor. Tourism for the poor is not a specific product or a niche sector, but rather an approach to tourism development and management. This condition improves the links between tourism businesses and poor people, so that tourism contributes to the fight against increases in poverty, and so that poor people can participate more effectively in product development.
There is also evidence that community tourism programs have improved the living conditions of the population that is considered poor in regional territories, using sustainable rural tourism as a dependent variable, alongside tourism activities that involve communities, including participation in decision-making, levels of knowledge about the tourism industry and empowerment [8].
The analysis of the impact of tourism on regional inequality indicates a significant long-term relationship, given that promoting the development of tourism is an effective tool to achieve more balanced regional development [7], starting from the fact that the development of the tourism sector can contribute significantly to the reduction of poverty indicators, given that tourism is considered an opportunity-generating activity, e.g., it improves livelihoods among the population by creating employment [9].
Many of the studies conducted in various countries around the world have shown that tourism has positive economic effects in terms of generating incomes and employment and reducing poverty [10,32]. Other authors have argued that tourism has a negative effect on economic growth [33][34][35][36]. Other studies attribute negative effects to tourism. Smorfitt et al. [37] argued that tourism imposes a high cost on regional economies, in that the profits obtained from tourists do not exceed the net losses suffered by local residents, resulting in negative effects on their general wellbeing [38]. Among the studies arguing that tourism has negative impacts on economic growth and poverty, the main causes identified are inefficient policies and environmental factors [39]. There are also studies suggesting that tourism has considerable positive impacts at the regional level, even when its impact at the national level is insignificant [40]. Furthermore, several studies argue that tourism does not have any impact at all [36,[41][42][43].
According to Deller [44], changes in poverty rates can to some extent be attributed to the role of recreation and tourism. Based on this, tourism potentially influences poverty rates by three channels; namely, prices, profits and incomes for the government [10]. Firstly, it is considered that prices can negatively affect the poor. The more tourism-related consumption, the higher the production, prices and wages in the tourism sector. Based on this, if wages increase in order to retain labor, the costs and prices of the products of these industries also increase, the result being higher prices overall. This does not benefit poor households that must pay more for the same products, since the increase in the general price level reduces their real income levels.
Secondly, in relation to wages, tourism solely benefits employees in tourism-related industries, given that the highest incomes tend to increase consumption among the poor and improve their level of life, but the poor that are not employed in this sector do not benefit from this source of income. Zhao [45] argued that the poor can benefit from tourism through self-employment in small-scale tourist-oriented businesses. With the help of Grootberg Lodge, Zhao argued that salary income has improved the livelihoods of some households in rural areas [46,47]. The results of a study in Malawi by Gartner and Cukier [48] reveal that, while employees in the tourism sector have better working and monetary conditions, the group does not show improvements in relation to other conditions of poverty.
The third aspect where the influence of tourism on poverty rates can be seen is government revenue, through taxes and tourism-related charges. This revenue can be used to improve the provision of infrastructure in poor areas, housing subsidies for the poor, increased health care and the formation of new jobs. However, the overall impact on the poor of increased government income depends on how this income is allocated. [10]. By adequately redistributing a larger proportion of tourism income to the poor, governments can increase the income levels and living conditions of the poor. Furthermore, by providing job training, governments can increase the employment rates among the poor [25]. This is why the government needs to invest in physical capital in order to improve tourism and the access to tourist destinations, through subsidies to the industry and the establishment of environmental standards for technology adoption and the promotion of regulated tourism. The contribution of tourism to poverty reduction is a challenging issue. For example, using a geographically weighted regression, Deller [44] analyzed what he considered to be the small role of tourism and recreation in explaining changes in poverty rates. Thomas [49] showed that the impact of tourism depends to a Sustainability 2020, 12, 6138 5 of 17 large extent on the chosen poverty threshold, a view shared by other authors that have addressed this issue [50][51][52].
While there is some empirical evidence that supports the link between the growth of tourism, economic expansion and poverty reduction in general [53], the evidence of this relationship in Latin America and the Caribbean is scarce in the best of cases. The presence of multiplier impacts of tourism on GDP and poverty are really important; a 5% increase in tourism-related income leads to a 3.09% reduction in poverty [53]. Other authors have argued that, although tourism has a positive effect on economic development, the effect is not statistically significant, which is why Latin American economies are generally based on sectors other than tourism. However, the incomes from tourism are significant to economic growth and poverty reduction in countries like Mexico, Uruguay, Nicaragua, Bolivia, Cuba, the Dominican Republic, Ecuador, Costa Rica, Peru and Brazil [54]. Furthermore, in Mexico, through an autoregressive distributed lags (ARDL) approach, the existence of a long-term relationship between international tourism and poverty reduction is evident [55].
A study by Estrella and Frías [9] showed that the tourism sector in Ecuador has a positive effect on the economy, contributing to economic growth and poverty reduction. Another study of tourism in Ecuador by Oyarvide et al. [56] identified variables that may explain the low level of development, such as the lack of training, low quality of services offered, lack of access to financing, failure to take advantage of natural tourist attractions, lack of socialization of socio-economic and cultural problems, and lack of linkages between productive activities and territorial planning. Similarly, Lambogglia [54] observed that income from tourism has a statistically significant and positive impact on economic growth. The determinants of Ecuadorian tourism that have positive and statistically significant effects are income levels, the human development index and the opening of international trade, while infrastructure and price levels are not significant variables. In Ecuador, tourism is a determining factor of economic growth. The socio-economic policies adopted in the analyzed period contributed to the development of the tourism sector, and consequently to the economic growth of the country [54].
Finally, several studies have been carried out in recent years analyzing the effect of tourism on poverty in different parts of the world. For example, Llorca-Rodríguez et al. [57] found that tourism reduces poverty in Peru, but not extreme poverty owing to a weak macro-environment and low levels of community participation. Similarly, in relation to a neighboring country of Peru, namely Ecuador, Croes and Rivera [53] established that tourism has the potential to decrease inequality and favor the poor. Gao and Wu [58] found that tourism has been used in historic villages in China as a key instrument in rural development and poverty reduction, given that the ideology of rural tourism and the means of sustainable living are integrated in this model [59]. Similarly, Shaanxi et al. [60] analyzed the participation of Chinese households in tourism projects aimed at favoring the poor, and found that the incomes of participating households were significantly higher than those of non-participating households; this difference was also explained by material, financial, political and human capital. Qin et al. [61] examined the positive effect of tourism policies on poverty in China. They found that the degree of the effect of the policy depended in large measure on other cultural, social and economic factors. Den Braber et al. [62] found that protected areas in Nepal alleviate general and extreme poverty, taking into account the performance of tourism, given that poverty has also decreased in areas with few tourists, which could be associated with tourism as an energizing activity. Yergeau [63] affirms that Nepalese households involved in tourism have notably higher incomes than uninvolved households. Njoya and Seetaram [64] analyzed the contribution of tourism to alleviating poverty, and found that the poverty rate decreased marginally, but with more impact in rural areas. In other words, the externalities of urban development are strengthened by the effects of tourism.
As noted above, not only have there have been studies of the impact of tourism in specific countries, but some authors have also examined the effect of tourism at the level of groups of countries. In a study of 43 tourist-receiving countries, Raza and Shah [65] confirmed the compliance of the Kuznets curve; that is, the growth of tourism decreases inequality and poverty. Likewise, Llorca-Rodríguez et al. [66] demonstrated the existence of the Kuznets tourism curve, indicating that both internal and inbound Sustainability 2020, 12, 6138 6 of 17 tourism reduce poverty, although internal tourism shows more intensive links to economically backward elements that favor the poor than inbound tourism, which could be explained by access to information. Complementary to this, in an analysis of 13 economies with intensive levels of tourism, Mahadevan and Suardi [13] found that tourism does not reduce personal poverty, but showed that the poverty gap is reduced significantly. In a study of 113 countries in different parts of the world, Lv [7] found that tourism is an efficient tool for the long-term reduction of poverty.
The literature review confirmed that there are few works that employ spatial econometric techniques to capture the regional effects of the interaction of poverty and tourism in order to analyze the role of tourism in reducing poverty in Ecuador. Therefore, the objective and the results of the study are novel, and allow us to raise important political implications. In contrast, Croes and Rivera [11] used a social accounting matrix model to quantify the effect of tourism on poverty.

Data
The necessary data were obtained from the database of the Central Bank of Ecuador (CBE) [17] and the National Survey of Employment, Unemployment and Under-Employment [15] of the National Institute of Statistics and Census (INEC). The regions analyzed were the 198 contiguous Ecuadorian cantons in 2018. Because of the spatial character of the analysis, the Galápagos Province was not considered, as it is an island and does not have contiguous territory with any of the other provinces.
In Ecuador, poverty can be measured by unsatisfied basic needs, by income, or in a multidimensional fashion. The dependent variable of regional poverty was obtained from ENEMDU [15], which refers to income poverty. The independent variable of the gross value added of regional tourism was obtained from CBE [17], which is a real measure (constant 2010 prices) which measures the production capacity of the economy.
The independent variable, schooling, measures how the regions with more study and academic preparation have better job opportunities, with which the regions develop lower poverty rates. The ethnic group allows us to capture the effect of discrimination on poverty. Employment in the formal sector helps us to understand how informal activities in the region make work precarious, and unemployment analyzes how regions with fewer job opportunities generate negative externalities, such as poverty. These variables are widely used in academic literature to examine the determinants of poverty [25,46,49,[67][68][69][70][71][72][73][74][75][76][77].
The survey made 59,958 observations in general; this information was then processed to obtain the values for each canton, an essential condition for carrying out the spatial econometric analysis. The National Survey of Employment, Unemployment and Under-Employment [15] variables used in the study are expressed as participation percentages for each canton, except for schooling. Table 1 describes the variables and the main statistics used in the model.  Table 2 shows the correlation matrix of the variables used in the model, in which it is observed that the Log Gross Value Added (GVA) of tourism has a significant negative relationship with Poverty.  Figure 1 shows the relationship between regional poverty and the GAV of tourism in 198 Ecuadorian cantons in 2018. The Tourism GVA is represented in brown, with darker shades representing higher levels of tourism GVA. Regional poverty is represented by the green circles; the larger the circle, the higher the rate of poverty represented. A high level of tourism-related GVA and low levels of poverty were observed in the majority of cantons. Despite this, there are cantons in which this relationship does not occur, because regional poverty is not determined by tourism GVA, but rather by other social, economic and/or spatial determinants, which will be examined later with the inclusion of control variables in the models. After the correlational analysis of the variables, we performed the spatial autocorrelation test developed by Moran [78]. The I-Moran value, plotted in Figure 2, confirms the existence of positive autocorrelation, with a value of 0.13 at a significance level of 5% (p-value = 0.033).  After the correlational analysis of the variables, we performed the spatial autocorrelation test developed by Moran [78]. The I-Moran value, plotted in Figure 2, confirms the existence of positive autocorrelation, with a value of 0.13 at a significance level of 5% (p-value = 0.033). After the correlational analysis of the variables, we performed the spatial autocorrelation test developed by Moran [78]. The I-Moran value, plotted in Figure 2, confirms the existence of positive autocorrelation, with a value of 0.13 at a significance level of 5% (p-value = 0.033).

Econometric Phase
To achieve the objective of this research, a two-part econometric strategy was employed. The first was a basic regression using ordinary least squares (OLS), which is formalized in the following equation: In Equation (1), P i is regional poverty, Log(TGVA) i represents the logarithm for the gross value added generated by tourism, and ε i represents the error term of the regions i = 1, . . . , 198, respectively. After estimating the basic relationship, covariates were included in order to analyze the other factors that determine regional poverty. Thus, Equation (2), which follows, is derived from Equation (1): where Z i is a vector that contains the control variables indicated in Table 1, such as schooling, unemployment, ethnicity and informal-sector employment. The second part of the econometric strategy was to estimate spatial models that allow for the capture of the effect of geographic contiguity. The I-Moran test (0.1329) indicates the presence of spatial autocorrelation at the significance level of 5%. The economic dynamic is highly related to geographic space, even more when it is strengthened according to the location of economic resources. Authors like Fischer and Griffith [79] suggest the application of spatial analysis to study the spatial spillovers of economic phenomena. The first model to be estimated was the spatial autoregression model (SAR), which was used to analyze how the poverty of one region is affected by that of contiguous regions. Following Anselin [80], the model is proposed as follows: where P i is a vector of observations for the dependent variable, ρ is a spatial autocorrelation parameter, X is a vector of covariates, and ε is a vector of independent and identically distributed error terms. W is a matrix of spatial or contiguous weights that determines the set of contiguous regions for the location, and is a base element for the spatial analysis of the results. The elements of W are the following: According to LeSage and Pace [81], the matrix W will be of order NxN, in which N is the number of observations. Each element of W is called special weight (ω ij ), which capture contiguity and are different from zero when cantons i and j are defined as neighboring. Furthermore, no region can neighbor itself; therefore, the elements of the main diagonal of W are equal to zero, ω ii = 0.
To determine the existence of spatial dependence in the error terms in the observations, the spatial error model (SEM) was employed to identify whether poverty is determined by the omitted variables of the neighboring regions. The model is defined as follows: where, W is a matrix of spatial weights NxN, λ is a parameter of spatial autocorrelation of errors u, and ε is a vector of an independent and equally distributed error term. Thus, the variable in this model which is dependent on location is a function of the independent variables, as well as the errors u of the neighboring regions. The Lag and Special Error Model (SARMA), which is based on the definitions of the two previously described models, has the following description: Finally, the spatial Durbin error model (SDM) proposed by LeSage and Pace [81] was employed to determine if the poverty of a given region is the result of the tourism activities of neighboring regions. This model is formally defined by: where, W is a matrix of spatial weights of NxN, ρ and γ are the parameters of spatial autocorrelation of the dependent and independent variables, respectively, and ε is the vector of independent and identically-distributed error terms. After estimating the equations detailed in this section, the following section presents and discusses the results.

Results
A set of econometric models was estimated using the ordinary least squares (OLS) and spatial models to examine the effect of tourism activities in reducing poverty. Table 3 shows the results of the basic regressions of the models. An inverse and statistically significant relationship between tourist activities and regional poverty was observed in the OLS and SDM models. Thus, tourism activities and poverty are negatively related because tourism is developed in regions with less poverty. When tourism activities increase by 1%, poverty decreases by between 4.311% and 0.748%. In the SAR model, the Lambda coefficient is not significant, so the premise that regional poverty depends on the poverty of neighboring regions is discarded. On the other hand, the Rho coefficient in the SEM model it is not statistically significant. The Rho and Lambda coefficients are not statistically significant in the SARMA model; that is, the results do not allow us to affirm that the poverty of a region is independent of the poverty of neighboring regions. The SDM model is statistically significant because the Lambda coefficient is statistically significant; the poverty of a region decreases by 0.748% when the GVA of the economic activity of a neighboring region increases by 1%. Note: t statistics in parentheses (*** p < 0.001). a The independent variable is spatially lagged to generate the SDM model. Table 4 shows the relationship between the tourism GVA and regional poverty, with the control variables. The OLS model maintains the sign of the relationship but is not statistically significant. The tourism GVA variable is not significant; however, schooling and the mixed population have a negative and statistically significant effect on the poverty of the canton itself. This is due to the fact that the cantons with a higher level of education are associated with lower poverty, and the cantons with a high tourist GVA tend to concentrate a higher level of education; likewise, the mestizo population is related to lower poverty levels, and the regions with a high tourist GVA tend to concentrate a greater mestizo population. Thus, when schooling and the percentage of the mestizo population increase, poverty decreases by 5.757% and 0.203%, respectively. Note: t statistics in parentheses, * p < 0.05, ** p < 0.01, *** p < 0.001. Independent variables were spatially lagged to generate the Dublin model. Regarding the SDM model, the statistically significant and negative relationship remains; likewise, the tourist activity of one region can decrease the poverty percentage of another neighboring region by 2.413%. With respect to the control variables, regional poverty increases when the level of schooling in the neighboring cantons increases. Likewise, the increase in the informality of one region increases the poverty of neighboring regions; that is, informality allows individuals to undertake activities and generate income to escape poverty; however, these are activities with low remunerations that do not allow the generation of the necessary resources to reduce poverty. Furthermore, regional poverty decreases in the region and neighboring regions when the mestizo population increases in relation to the Afro-American population.
The difference in the coefficient of the GVA tourism variable of the OLS and SDM model could be explained by the fact that certain cantons have greater development potential and offer relatively higher wages, which is attractive for people from neighboring cantons who can move easily due to the proximity of the regions. Furthermore, in some cantons with greater economic development, there are other economic activities that generate more income than tourism, in which a large part of the canton's population may be concentrated, such that tourism-related activities may be occupied by people from neighboring cantons who see it as an opportunity to get out of poverty.

Discussion of Results
The results of the basic regressions shown in Table 3 concur with those obtained by Pham et al. [41], who stated that tourism has a positive effect in reducing poverty at the regional level, although its effect is insignificant at the national level. This is similar to what Blake et al. [10] and Scheyvens and Russell [32] observed; they pointed out that tourism has a positive economic effect, generating incomes and jobs and reducing poverty. However, contrary to what Agarwal [33], Iverson [34], Pratt [35] and Akama and Kieti [36] have stated, the OLS regression makes evident the existence of a negative and statistically significant relationship. The more dynamic the tourism sector, the more the demand for goods and services, which translates into job creation and poverty reduction. This concurs with Harrison [30], who noted that tourism projects increase employment and business opportunities, benefiting populations and collectives.
According to Table 4, which includes the covariates, the results of the SDM model are similar to those of Pérez [82] and Barragán [83], who found that the poverty of a region is associated with spatial factors of neighboring regions. The result, that regional poverty increases when the educational level in neighboring cantons increase, is associated with the fact that the more developed regions concentrate a greater quantity of skilled labor and generate competition and inequality with neighboring regions. Since according to Alvarado, Jiménez, Sánchez and Ponce [84], human capital has a positive effect on the level of regional entrepreneurship with spatial spills, such that the entrepreneurship rate of a given region depends on the neighboring areas and local human capital closer by. Regarding informality, Zhao [45] observed that the poor benefit from tourism through self-employment in small-scale tourism-related businesses. However, if attempts are made to bring informal workers into the formal sector, the reduction in the incidence of poverty is not very significant, since there are other factors that contribute to poverty, such as high dependency rates among poor households, and the shorter number of hours that informal-sector workers work [85]. The condition of informality in itself is a source of low incomes, explaining between 60 and 70% of the difference in the wage incomes of formal and informal sector workers. The importance of informal-sector employment and the lower remuneration that workers in this sector receive indicate a relationship between informality and poverty [86]. Regarding the Mestizo population, according to Churchill, Smyth [73], poverty is determined by racial discrimination factors.
The results as a whole indicate the existence of economic and spatial factors that determine regional poverty. This confirms the hypothesis that regional poverty is determined by spatial spillovers. These results are supported by the fact that poverty is associated with geographic, as well as social and economic, conditions. Gartner and Cukier [48] affirm that while the employees of the tourism sector experience improved working and monetary conditions, the group does not exhibit improvements in relation to other aspects of poverty, given that poverty is a multidimensional condition. Added to this, the impact of tourism on poverty depends largely on the poverty threshold chosen [50][51][52], and poverty can worsen or improve according to factors in the region itself, as well as factors in neighboring regions.
Based on an analysis of consumption in Ecuador, Barragán [83] showed the existence of spatial dependence at the parochial level. This concurs with the results of a spatial analysis of poverty in Colombia by Pérez [82], who observed spatial dependence at the departmental and municipal levels, indicating that geographic location is an important determinant of poverty. That is, the fact that each region has on its neighbors is a fundamental determinant in explaining poverty. This result differs from that of Tapia [87], who concluded from his analysis of multidimensional poverty in Ecuador that the increase or decrease in poverty in a spatial unit (canton) does not affect the level of poverty in neighboring canton.
The tourism activity typical of the region contributes to reducing poverty, which is consistent with Estrella and Frías [9], who concluded that the tourism sector has a positive effect on the economy and contributes to economic growth. It also confirms that the tourism sector can play an important role in poverty reduction. The presence of multiplier effects of tourism on the GNP and poverty are really important, with a 5% increase in tourism resulting in a 3.09% reduction in poverty [53]. Harrison [30] and Estrella and Frías [9] indicated that, in countries that depend mainly on tourism, this sector can represent between 30 and 90% of GNP, and employ between 20 and 50% of the population [5]. Tourism also improves the links between tourist businesses and the poor in order to increase the contribution of tourism to the fight against poverty. Furthermore, it allows the poor to participate more effectively in the development of the region. Finally, tourism generates spatial spills, thereby reducing poverty in neighboring regions. This is contrary to what was found by Smorfitt et al. [37], who argued that tourism imposes a major cost to regional economies, given that the incomes obtained from tourists owing to the expansion of tourism are less than the net losses suffered by residents, resulting in a negative impact on the general wellbeing of the population [38]. Economic policy-makers should direct their strategies to reducing regional poverty. They should take into account the economic and spatial characteristics of the cantons themselves and of their neighboring cantons, given that poverty is not an isolated phenomenon, but rather depends on the factors of neighboring regions. Government intervention is therefore necessary in the correct allocation of income from tourism among different groups. If tourism is managed by focusing primarily on poverty alleviation, it can directly benefit the poorest groups by employing the local population in tourism businesses, providing goods and services to tourists, managing small and community-based businesses, and improving access to tourist destinations, with a consequent positive impact on poverty reduction according to Blake et al. [10] and Li, Jin and Shi [25]. Since, in Ecuador, the tourist activities with the highest demand are those related to food, the skills required of people do not require a high degree of preparation, so the availability of people to enter the tourism sector is immediate and represents a low cost of transaction. In this way, tourism activity becomes one of the key factors in achieving the goal of sustainable development, eradicating world poverty. Ecuador can take advantage of its tourist potential due to its geographical location, its biodiversity, and its intercultural diversity. All of its provinces have tourism potential; the development of that potential depends not only on activity but also on state support. According to the Ministry of Tourism of Ecuador [14], all of the provinces have tourism potential, as can be seen in Figure A1 (Appendix A).

Conclusions and Policy Implications
This examination of the economic and spatial determinants of regional poverty makes an important contribution for economic policy-makers, since they can make appropriate decisions based on empirical data to combat poverty. Furthermore, it provides sufficient evidence which contributes to achieving the objective of sustainable development, i.e., eradicating poverty worldwide. This research examined the effect of the gross value added of tourism on regional poverty in Ecuador, using basic econometric and spatial models to examine the role of neighboring regions in determining the poverty of Ecuadorian cantons. This study made a novel contribution in that there have not been any previous studies that analyze the relationship between poverty and tourism in Ecuador. The contribution is very significant; the results of the study indicate that poverty and tourism activities are negatively related in the same canton, and with the neighboring regions; that is to say, the increase in the tourist activity of a canton reduces the poverty of the canton and its neighboring cantons. Furthermore, poverty is reduced by the increase in informal-sector employment in the canton itself, as well as in adjoining cantons. Poverty can worsen or improve according to factors typical of the region, as well as the factors of neighboring regions. Thus, the tourist activity which is typical of a region contributes to the reduction of its poverty. Additionally, there are effects of territorial contiguity on the poverty of the cantons; that is, the poverty of a canton is not the result of the poverty or economic activity in neighboring regions; however, the poverty of a canton increases when the level of schooling in the neighboring cantons increases.
One of the limitations of this study is that the analysis employed cross-sectional data, which limits the temporal and spatial dimensions of econometric analyses. Another limitation is derived from the inclusion of new control variables that have not been considered due to the lack of data at the official database level.