Poverty Traps in the Municipalities of Ecuador: Empirical Evidence

The objective of this research is to identify from a spatial and temporal perspective the territories that are located in a “poverty trap” scenario. This is a scenario that does not allow overcoming the conditions and determinants that gave rise to this precarious situation, creating a vicious circle where the conditions of poverty endure through time. The methodology applied is an exploratory analysis of spatial dependence through Moran’s scatterplot and local indicators of spatial association (LISA) maps to visualize the spatial clusters of poverty. The database used is that of the population and housing censuses of 1990, 2001, and 2010 at the cantonal level. The results determine that 73 cantons were in a poverty trap over the period 1990–2001, while from 2001–2010, there were 75 cantons in this situation, which were located mainly in the provinces of Esmeraldas, Manabí, and Loja.


Introduction
Regional inequalities in Ecuador's economic development processes are noticeably revealed through a series of situations and conditions such as an economic and population concentration in certain provinces, disparities in the gross domestic product per capita, family income, access to public services, schooling, significant gaps in the provision of infrastructure, as well as the marginalization and poverty of a considerable number of people in the population.
Poverty rates are proof of the disparities existing at the regional level in Ecuador, as argued by Chiriboga and Wallis [1] and García-Vélez [2], who observed that the poverty rates differ significantly for each region.The common factor in these two investigations is that the regions with the lowest levels of poverty are those that concentrate economic, political, and administrative activities; while the regions with the highest poverty are those of the Ecuadorian Amazon.
Interest in issues related to the study of poverty, including its causes and consequences, emerged in Ecuador in the 1970s, with the rise of territorial planning.The government started these initiatives through the National Planning Board (JUNAPLA) in view of the need to focus and prioritize social spending toward satisfying the basic needs of the lowest income sectors.In this sense, Ruiz and Sánchez [3] pointed out that this institution developed several studies on living conditions, housing, and access to services in working-class neighborhoods where marginalization is clearly evident.
One of the first academic investigations on the satisfaction of basic needs was carried out by Barreiros et al. [4].These authors reiterated the need to follow an integrated development approach to eradicate poverty, included the basic needs approach in the development agenda, and emphasized the interaction between poverty and the economic, social, and political structures.Subsequently, Cobos [5] stated that the persistence of socio-territorial inequalities and their relationship with local development is based on factors not only inherent to the territory, such as natural or climatic issues, but also on social, economic, and/or political issues.In 2009, Skoufias and López-Acevedo [6] prepared a report for IBRD-World Bank [7] on territorial disparities in Latin America; according to Boisier [8], this is one of the most important reports.In the case of Ecuador, the authors stated that there are greater differences in the poverty rates between urban and rural areas than between regions in general.Subsequently, Scott and Janikas [9] developed a map of poverty clusters for Ecuador using Moran's index, and found high poverty clusters in the north and south of the country.The contribution of this work is not analytical, because the approach of the authors' work was defined by the use of tools and software for mapping and spatial analysis, and was not focused on poverty issues.
Béland and Escobar [10], based on population and housing censuses, living conditions surveys, and other official publications, carried out a socioeconomic characterization that includes 10 parishes in the province of Tungurahua (located in the central Ecuadorian sierra).These authors found that poverty by consumption levels is very high, but poverty with unsatisfied basic needs (UBN) is even higher, which is linked to those territories that are highly dependent on agricultural production activities, with discrete productive diversification and apparent modest economic flows.Burgos [11] analyzed behavior due to UBN and the relationship between economic growth and its main components, and also formulated a simulation on the effects that would be generated on the poverty indicator due to UBN if all of the households in the country were connected to the public drinking water supply and sewage disposal systems.As a result of the simulations carried out, a sharp drop in the magnitudes of poverty and extreme poverty indicators with UBN were observed, especially in rural areas and the Montubia and Afro-Ecuadorian indigenous ethnic groups.
At the state level, the System of Social Indicators of Ecuador [12] developed the poverty indicator with UBN and the extreme poverty indicator with UBN.According to the former, in 1990, 79.6% of the total Ecuadorian population lived in poverty; in 2001, this figure was 71.4%, and according to the last national census carried out in 2010, it was 60.1%, that is, approximately 8,605,803 people were in structural poverty conditions that did not allow them to satisfy minimum subsistence needs.The second indicator shows lower results, since in order for a household to be considered in extreme poverty, it must not satisfy at least two basic needs.So, for 1990, 51.8% of the population suffered from extreme poverty due to UBN; in 2001, this figure was 39.9%, and finally, in 2010, 26.8% of extreme poverty was identified.This brief analysis reports a significant decrease in poverty and extreme poverty with UBN.However, this progress has been uneven in the Ecuadorian territory.As Cobos [5] pointed out, the poverty percentages in urban and rural areas between regions showed a large inequality between the areas of the same territorial district, where the greatest difference was more than 40 points in the Ecuadorian Sierra.This situation exemplifies the problem of poverty, as well as that of inequality within the same territorial jurisdiction.
In this area, according to the Ministerio de Coordinación de Desarrollo Social [13], several studies have been carried out that have analyzed the distribution of spatial poverty, which combine several methodological strategies to describe the existing inequalities among the geographic units of Ecuador.The following studies are included: (1) The Economic Commission for Latin America and the Caribbean [14] presents the levels of poverty measured by UBN at the cantonal and parochial levels, based on data from the IV National Population Census and Housing III of 1982.(2) The National Development Council [15] develops a consolidated national map of poverty that synthesizes in a composite cantonal index the result of several spatial studies related to poverty.
(3) The National Institute of Statistics and Census [16] shows a summary of UBN of the Ecuadorian population that incorporates variables of infrastructure, education, and health, which are calculated on the basis of the Population and Housing Census of 1990.(4) The Technical Secretariat of the Social Front [17] estimates a model that projects the per capita family consumption of the Living Conditions Survey of 1994 and the 1990 Population and Housing Census.(5) The Office of Planning of the Presidency of the Republic [18], which is based on the previous study and the Living Conditions Survey of 1995, incorporated socioeconomic variables in the estimation of regression models, correlating it with household consumption.(6) The World Bank and the System of Social Indicators of Ecuador (SIISE) [7] (8) The SIISE [20] shows poverty maps by UBN at the provincial, cantonal, and parochial levels at a descriptive level, based on information from the 1990, 2001, and 2010 censuses.(9) The National Secretariat for Planning and Development [21] presents the atlas of socioeconomic inequalities in Ecuador, which explains a typology of territories according to their social conditions, and carries out a historical (20 years) and territorialized analysis of the different types of inequality (education, health, housing, decent employment, gender-based violence, and child abuse) that have existed and are still present in the country.
In this context, the objective of this research is to identify from a spatial and temporal perspective those territories that are located in a "poverty trap" scenario.To achieve the proposed objective, the methodology used is exploratory spatial data analysis (ESDA) and its spatial association techniques; Moran's scatterplot, LISA graphs (local indicators of spatial association), and dynamic maps for presenting the results.Unlike the aforementioned studies, in this work, the ESDA technique is used to visualize spatial distributions, detect atypical locations, and verify the existence of spatial association patterns, which enables identifying if there is spatial autocorrelation of poverty or if it is distributed randomly throughout territories and time.The unsatisfied basic needs (UBN) approach is followed, mainly because it provides data with a high level of disaggregation that is perfectly comparable over time.
The present investigation contributes with innovative questions when using procedures and tools that, through the use and treatment of spatial data, incorporate the characteristics, dynamics, and behaviors of the processes related to the basic needs of the population in the municipalities of Ecuador.In addition, its application shows territorial relationships, which enables the provision of additional knowledge on the subject in question.This analysis can be applied to other variables of a different nature to address the problems in a way that allows discovering the singularities of the territories of a phenomenon to define their participation within the global context.In addition, the focus of this work will allow researchers and public policy managers to better understand poverty from a new perspective: spatial.This in turn, increases the knowledge of the regional economic reality of the country, and would enable a better design of regional development policies.
This article is structured in five sections.In the introduction, the object of the study is contextualized, and the objective is stated.Hereafter, the term "poverty traps", is defined and the indicators that measure it are mentioned.In the methodology section, the analysis variable is presented in this research, as well as the statistical tool used, ESDA, and the results obtained are included in the following epigraph.Finally, the conclusions are discussed.

Poverty Traps
A poverty trap is conceived as a situation in which a household cannot leave the precarious environment in which it lives, either due to internal household reasons or external reasons such as a lack of government support to improve its quality of life.Banerjee and Duflo [22] considered that the future income of a poor household will be lower than its current income, so people will become poorer over time, which places them in a poverty trap.
Therefore, households that face poverty traps are those that systematically show difficulties to achieve minimum levels of well-being over time, and therefore are subject to situations of persistent deprivation [23].This situation is caused by the existence of multiple and dynamic factors, which are the subject of study and analysis among researchers and those who design public policies [24,25].
Several studies warn of the presence of poverty traps in different countries and their direct relationship with the deprivation of access to educational and formative levels [26-30], both for the head of the family and the household members.Meanwhile, the accumulation of goods generates dynamics that persistently traps households with lower possession levels of these goods below the poverty line [30,31].
Poverty traps are not generated only by conditions specific to households, but also by the households that surround them.In this sense, considering the neighborhood effects, stated that "living in a poor neighborhood can increase the adverse consequences of poverty, and reduces the chances of getting out of that situation" [32] (p. 1).Thus, if poverty traps are subject to the neighborhood where the household is located, the geographical location of households can be considered a condition that provides a greater capacity to explain changes in the incidence and persistence of poverty.
In effect, those territories trapped in different poverty dimensions have similar characteristics: their high rurality [33][34][35][36], their distance from the administrative and commercial capitals [37], and structural factors such as difficult access to their territories [38].In addition, the poverty intensity, the education deprivation gap, and the deepest entrapment occurs in those territories where the majority of the population is indigenous [38,39].
However, no approach can be considered as the most appropriate for measuring poverty.Therefore, the decision of which approach to follow is highly dependent on the measurement intentions and the availability of information.Therefore, the starting point is to establish the indicator that will be used to measure poverty.Specifically, the academic literature shows a wide variety of measures [51][52][53], choosing to measure poverty in terms of unsatisfied basic needs (UBN) for this research.In Ecuador, it is the measure that shows data with the greatest regional disaggregation and allows fulfilling the objective of identifying those territories that continue in a "poverty trap" scenario.In this sense, the cantons that relapse in this situation of poverty during the period 1990-2010 will be located spatially; in addition, the presence of spatial autocorrelation and the formation of clusters will be verified, taking as reference the data of the extreme poverty index with homogenized UBN at the cantonal level available in the national censuses of 1990, 2001, and 2010.With reference to the term "cantons", these are the political-administrative units through which work is done in this investigation, which refer to the Administrative Political Division of Ecuador; nine planning areas, 24 provinces, 221 cantons, and 1149 parishes.
The UBN approach is a contribution of the Economic Commission for Latin America and the Caribbean (ECLAC), which was introduced in the 1980s, and is used exclusively in Latin America for the poverty measure based on census information.This approach "consists of verifying whether households have satisfied a series of previously established needs and considers those that have not achieved them as poor" [54] (p.24).It is also known as a direct method for measuring poverty, since it determines whether the population actually satisfies their basic needs.
The basic needs that the approach considers depend on the availability of information.However, the different applications of the approach include four basic needs: economic capacity, access to adequate health services, access to basic education, and access to adequate housing [54][55][56], among others.The UBN indicator for Ecuador officially measured by the National Institute of Statistics and Census (INEC), considers precisely the four basic needs mentioned.

Analysis Variable: Extreme Poverty Rate with UBN
The variable that will be used in this research is the extreme poverty rate with unsatisfied basic needs (UBN) at the cantonal level, which was calculated from the population and housing censuses of 1990, 2001, and 2010.The extreme poverty rate is the number of people living in conditions of extreme poverty, which is expressed as the total population of the canton in a given year.
The data are obtained from the System of Social Indicators of Ecuador (SIISE).This variable is considered to identify poverty traps in Ecuador, because it conveys a multidimensional vision of poverty, in addition to enabling studying poverty over time and at a higher level of regional disaggregation.
In Ecuador, the extreme poverty rate with UBN is calculated based on five dimensions or basic needs, distributed in eight indicators that measure the concept of "deprivation".In this sense, households that are deprived in two or more indicators are considered in extreme poverty (see Table 1).
According to the 1990 census, there were 218 cantons in Ecuador; in 2001, the number of cantons increased to 220, and in the 2010 census, there were 221 cantons and three non-delimited zones.This variation occurs due to four reasons: (1) the creation of new cantons; (2) the division of cantons; (3) parishes that are created in new cantons; and (4) the creation of new provinces with their respective cantons.As a consequence of the variation in the number of cantons, it is necessary to homogenize geographically the series so that the data are comparable.

Economic capacity
If the years of schooling of the head of the family are less than or equal to two years.If there are more than three people for each person employed in the home.
Access to basic education If there are children at home aged between six and 12 who do not attend school.

Access to housing
If the floor material of the house is with earth or other materials.
If the wall material of the house is made of reed, matting, or other materials.
Access to basic services If the house does not have a toilet or if it has one, it is a concrete pit or latrine.
If the water obtained by the house is not from a public network or another piping source.

Overcrowding
If the number of people per bedroom is greater than three.The process of homogenization consists of putting together a series with the same number of cantons for each census, for which the cantonal structure of the 2010 census is taken as a reference, since it is necessary to perform the analyses and the calculation of indicators based on the political-administrative organization in force in the country.Of the 221 current cantons, 2.7% (six) are newly created, 2.2% (five) are cantons that underwent modifications, and 95.1% (213) have not undergone alterations since 1990, for which only 4.9% (11) of cantons were homogenized.In addition to the 221 cantons, there are three non-delimited zones; so, the research is developed considering 224 study units.

Spatial Analysis of Poverty
ESDA is used to identify systematic relationships between variables when the relationship between them is unclear.According to Tukey ([57] cited by Yrigoyen [58]), this multivariate analysis can be defined as "the set of graphic and descriptive tools used to discover behavior patterns in the data and to establish the hypotheses with the smallest possible structure".Anselin [59] defined it as the set of techniques that describe and visualize spatial distributions, identify "spatial outliers", discover spatial association outlines, such as "clusters" or "hot spots", and suggest spatial structures or other forms of spatial heterogeneity.According to Yrigoyen [58], the ESDA must be the stage prior to any modeling and decision-making analysis in the field of socioeconomic research.Following this line, the main spatial association techniques are used in this research: the dispersion diagram of Morán (univariate and bivariate) and LISA graphs.In addition, dynamic maps are used to show the results.The techniques mentioned and the maps are worked with using GeoDa 1.12 software.
Moran's index [60] is one of the most used techniques to detect spatial autocorrelation between spatial units, and it is similar to the correlation coefficient between two variables [61].According to Bohórquez and Ceballos [62] (p.22), this index is "an adaptation of a non-spatial correlation measure to a spatial context, and it is normally applied to spatial units where information is available in the form of ratios or intervals".Moran's I statistics is basically the Pearson correlation coefficient [63] with a user-defined weight matrix that maintains the range between −1 and 1 [64]: where: N is the number of regions, Z i = X i − X; therefore, it is X in terms of deviations from its mean, W ij is the sum of the space weights, and For a better understanding, the index is standardized, and the Z (I) value is obtained.The values taken by this standardized index can be positive or negative.In the case that they are positive and statistically significant, it is concluded that the data show positive spatial autocorrelation; if they are negative and statistically significant, it is concluded that there is negative spatial autocorrelation.Moran's index, which lacks spatial autocorrelation, should be close to zero [65].
According to Rivero [66] (p.54), "although Moran's I test is the most used in practice, there are, however, other alternatives to it, such as the Geary C test [67], or the Getis G test and Ord [68]".
The ESDA "has various graphs that allow to visualize the presence or absence of spatial autocorrelation clearly and directly" [66] (p.54), with the univariate Moran scatter plot being the most used.It is represented on a Cartesian plane in which the previously standardized X variable is located on the X-axis and the spatial delay of the standardized WX variable is located on the Y-axis.The slope of the regression line obtained from the spatial relationship is the Moran's I statistical value of spatial autocorrelation [69].The association presented in the diagram is divided into four categories: two for positive spatial autocorrelation, and two for negative spatial autocorrelation  2).[71].
The difference between the univariate Moran scatter plot with the bivariate is that in the latter, the spatial delay of the dependent variable that is to be explained is located on the Y-axis, and the explanatory or independent variable is located on the X-axis.
LISA graphs allow observing the degree of concentration of similar values around a geographical unit; these graphs work with Moran's I statistics of local association, since these statistics measure the degree of concentration of high/low values of the variable in the geographical environment of each of the observations.LISA maps are within LISA graphs, in which the locations with significant values are represented in certain statistical indicators of local spatial association; these maps show the "spatial clusters" or "hot spots", whose higher or lower intensity will depend on the associated significance of the aforementioned statistics [68,[72][73][74].
Despite the limitations of spatial analysis [75], the spatial distribution of poverty and heterogeneity in the territories of persistent situations of deprivation of the population are issues of recent interest for researchers.The use of methodologies and spatial correlation models enable statistically explaining factors and evidence that have been present in the explanation of the multidimensional phenomenon of the poverty trap.Furthermore, the relevance of analyzing it at a level of disaggregated administrative entities provides the possibility of exploring behavior patterns and dynamics with significant differences.As pointed out by Yue et al. [76] when exploring patterns of poverty and inequality, they conclude that regional inequality "is sensitive to the choice of geographic scales: inequality among counties shows an inverted U-shaped pattern, inequality among municipalities shows a more constant upward trend, and the evolution of interregional inequality is relatively stable over time" (p.5763).In this area, when referring to poverty traps, Zhang and Deng [77] affirmed that the economic disparity was closely related to the scale of the geographical unit in the study area: the smaller the unit, the greater the disparity.
Other studies that can be cited within this context are those by Pérez [78] and Muñetón and Vanegas [79], who for Colombia concluded that correlations in natural factor endowments-in externalities, or a combination of both-and their location in border areas cause poor municipalities to be close to other poor municipalities and rich municipalities to be surrounded by administrative units that are also rich.More recently, Tian et al. [80] also showed evidence that in other countries, poverty takes place in contiguous rural areas that are located in geographical areas with common natural characteristics, although they recognize that the cause in each area is different.
For Spain, Jurado and Pérez [81] carried out an analysis of spatial differences in poverty rates, finding that Extremadura and Castilla La Mancha are a special case, both because of the weight of the rural population and the poverty rate that is present in the rural areas of these regions.In the Federal District (Mexico), Bolívar Espinoza and Caloca Osorio [82] carried out a study on the spatial distribution of poverty, which, based on the principal component method, found asymmetric behavior within the same city; the Benito Juárez delegation had a very low poverty level, and the Milpa Alta delegation had a very high poverty report.
The poverty traps in China at the prefecture level are related to the rural and urban gap according to Wu and He [83], who through convergence clubs confirmed that persistence, inequality, and income immobility are present in rural areas and between territorial groups in the eastern, central, and western regions.They also concluded that there are geographical poverty traps in rural prefecture areas, and indicated the need for intervention through policies to reduce the urban-rural gap and eliminate poverty traps; Tian et al. [80] agreed.
In short, the use of spatial data and the application of exploratory analysis techniques in this research make a significant contribution to the study of living conditions and the subsistence of the population, because they place census data from official sources in the space and at subnational (cantonal) scales.This allows obtaining a high level of reliability in the results, as well as a better understanding of the spatial relationships that occur in the territory over time, and defining sets and significant common patterns of grouping.

Persistence of Inequalities over Time
The levels of extreme poverty with UBN, taking into account the National Population Census, show high levels of correspondence for the period 1990-2001.The same happens if we relate the UBN for the other intercensal periods.In practice, if the intervention of the state through public works, social investment, and health care were effective to reduce these disparities among the municipalities of the country, a low level of correlation would be expected, which does not happen.On the contrary, an increase is observed for the last two censuses (Figures 1-3).The levels of extreme poverty with UBN, taking into account the National Population Census, show high levels of correspondence for the period 1990-2001.The same happens if we relate the UBN for the other intercensal periods.In practice, if the intervention of the state through public works, social investment, and health care were effective to reduce these disparities among the municipalities of the country, a low level of correlation would be expected, which does not happen.On the contrary, an increase is observed for the last two censuses (Figures 1-3).In this context, Serrano [84], when addressing issues related to public policy, investment by canton, and poverty reduction through the evolution of the UBN 2001-2010, pointed out the difficulty of incorporating public investment in the analysis due to information sources.A large proportion of The levels of extreme poverty with UBN, taking into account the National Population Census, show high levels of correspondence for the period 1990-2001.The same happens if we relate the UBN for the other intercensal periods.In practice, if the intervention of the state through public works, social investment, and health care were effective to reduce these disparities among the municipalities of the country, a low level of correlation would be expected, which does not happen.On the contrary, an increase is observed for the last two censuses (Figures 1-3).In this context, Serrano [84], when addressing issues related to public policy, investment by canton, and poverty reduction through the evolution of the UBN 2001-2010, pointed out the difficulty of incorporating public investment in the analysis due to information sources.A large proportion of expenditure is recorded and accounted for as national expenditure, and does not distinguish the The levels of extreme poverty with UBN, taking into account the National Population Census, show high levels of correspondence for the period 1990-2001.The same happens if we relate the UBN for the other intercensal periods.In practice, if the intervention of the state through public works, social investment, and health care were effective to reduce these disparities among the municipalities of the country, a low level of correlation would be expected, which does not happen.On the contrary, an increase is observed for the last two censuses (Figures 1-3).In this context, Serrano [84], when addressing issues related to public policy, investment by canton, and poverty reduction through the evolution of the UBN 2001-2010, pointed out the difficulty of incorporating public investment in the analysis due to information sources.A large proportion of expenditure is recorded and accounted for as national expenditure, and does not distinguish the In this context, Serrano [84], when addressing issues related to public policy, investment by canton, and poverty reduction through the evolution of the UBN 2001-2010, pointed out the difficulty of incorporating public investment in the analysis due to information sources.A large proportion of expenditure is recorded and accounted for as national expenditure, and does not distinguish the province or the canton of investment; so, a direct correlation between public investment at the municipal level and a reduction of extreme poverty with UBN is not found.However, it is concluded that not having corroborated an effect of investment on the poverty indicator with UBN does not prove that the investment does not influence poverty.

Poverty Trap
Scatter diagrams and Moran's index are used in order to see spatial interactions [85], as well as to verify the heterogeneity (systematic differences) and spatial dependence [86,87] that causes the index of extreme poverty with UBN in cantons.For the calculation of the Moran's index, a matrix of first-order space weights used, which allowed us to establish how the territorial units relate to each other.
According to the dispersion diagrams, for the three census periods, most of the cantons are located in quadrants I and III (High-High and Low-Low, respectively), which show a spatial autocorrelation between extreme poverty conditions and UBN in Ecuador (Figures 4-6).In effect, Moran's I is significant (all three have a pseudo-probability of less than 1% that the spatial distribution is a random phenomenon) and positive in each of them.This results in grouping neighboring cantons with high UBN, as well as the presence of adjoining cantons in which basic needs are better satisfied.In fact, it is evident that in Ecuador, there is a group of poor cantons surrounded by poor cantons, and non-poor cantons surrounded by non-poor cantons.
The appearance of clusters in the territory is due to the presence of spatial autocorrelation.The concept of cluster has its origin in the definition of the first law of geography of Tobler [88]: "everything is related to everything, but things close to each other are more related than distant ones" (p.236), while spatial autocorrelation occurs when similar characteristics or the behavior of the variables in neighboring places are shown [86,89,90].
Sustainability 2018, 10, x FOR PEER REVIEW 9 of 18 index of extreme poverty with UBN in cantons.For the calculation of the Moran's index, a matrix of first-order space weights was used, which allowed us to establish how the territorial units relate to each other.
According to the dispersion diagrams, for the three census periods, most of the cantons are located in quadrants I and III (High-High and Low-Low, respectively), which show a spatial autocorrelation between extreme poverty conditions and UBN in Ecuador (Figures 4-6).In effect, Moran's I is significant (all three have a pseudo-probability of less than 1% that the spatial distribution is a random phenomenon) and positive in each of them.This results in grouping neighboring cantons with high UBN, as well as the presence of adjoining cantons in which basic needs are better satisfied.In fact, it is evident that in Ecuador, there is a group of poor cantons surrounded by poor cantons, and non-poor cantons surrounded by non-poor cantons.
The appearance of clusters in the territory is due to the presence of spatial autocorrelation.The concept of cluster has its origin in the definition of the first law of geography of Tobler [88]: "everything is related to everything, but things close to each other are more related than distant ones" (p.236), while spatial autocorrelation occurs when similar characteristics or the behavior of the variables in neighboring places are shown [86,89,90].Throughout the 20 years of study, there are clusters of cantons that show spatial correlation due to their high rates of extreme poverty with UBN (Figures 7-9).These clusters are present in six provinces: Guayas (Balzar, Colimes, Palestina, Pedro Carbo, and Santa Lucia), Manabí (Chone, Paján, Santa Ana, 24 de Mayo, and Olmedo), Los Ríos (Vinces), Chimborazo (Pallatanga), Azuay (Oña), and Loja (Calvas, Celica, and Puyango).While the cantons that show spatial correlation during this period correspond to a large part of the population being in conditions with low levels of extreme poverty with UBN, they are distributed in six provinces: El Oro (Machala, Atahualpa, El Guabo, Passage, Piñas, Portovelo, Santa Rosa, and Zaruma), Pichincha (Quito, Mejía, and Rimuñahui), Chimborazo (Penipe), Imbabura (Otavalo), Napo (Carlos Julio Arosemena), Pastaza (Mera), and Tungurahua (Tisaleo).
As seen in figures 7-9, spatial polarization has been maintained over time, according to the results of the inter-census periods.However, to deduce more clearly the persistence of extreme poverty with UBN in Ecuadorian cantons over time, it is necessary to use the bivariate Moran dispersion diagram (Figures 10 and 11).In this diagram, the poverty indices of a period of time are related to the values that are observed in the neighborhood in another period of time.To do this, we compare the levels of poverty in a given year and location with the values observed in poverty lagged temporally and spatially [32].Throughout the 20 years of study, there are clusters of cantons that show spatial correlation due to their high rates of extreme poverty with UBN (Figures 7-9).These clusters are present in six provinces: Guayas (Balzar, Colimes, Palestina, Pedro Carbo, and Santa Lucia), Manabí (Chone, Paján, Santa Ana, 24 de Mayo, and Olmedo), Los Ríos (Vinces), Chimborazo (Pallatanga), Azuay (Oña), and Loja (Calvas, Celica, and Puyango).While the cantons that show spatial correlation during this period correspond to a large part of the population being in conditions with low levels of extreme poverty with UBN, they are distributed in six provinces: El Oro (Machala, Atahualpa, El Guabo, Passage, Piñas, Portovelo, Santa Rosa, and Zaruma), Pichincha (Quito, Mejía, and Rimuñahui), Chimborazo (Penipe), Imbabura (Otavalo), Napo (Carlos Julio Arosemena), Pastaza (Mera), and Tungurahua (Tisaleo).
As seen in Figures 7-9, spatial polarization has been maintained over time, according to the results of the inter-census periods.However, to deduce more clearly the persistence of extreme poverty with UBN in Ecuadorian cantons over time, it is necessary to use the bivariate Moran dispersion diagram (Figures 10 and 11).In this diagram, the poverty indices of a period of time are related to the values that are observed in the neighborhood in another period of time.To do this, we compare the levels of poverty in a given year and location with the values observed in poverty lagged temporally and spatially [32].
As seen in figures 7-9, spatial polarization has been maintained over time, according to the results of the inter-census periods.However, to deduce more clearly the persistence of extreme poverty with UBN in Ecuadorian cantons over time, it is necessary to use the bivariate Moran dispersion diagram (Figures 10 and 11).In this diagram, the poverty indices of a period of time are related to the values that are observed in the neighborhood in another period of time.To do this, we compare the levels of poverty in a given year and location with the values observed in poverty lagged temporally and spatially [32].For the two periods, it can be seen that the majority of points, representing each of the cantons, are in the first and third quadrants.Therefore, a positive correlation between the periods analyzed is shown; this is a situation confirmed by Moran     In Table 3, it can be seen that in the first analysis period 1990-2001, approximately one-third of the cantons (32.6%) are in a spatial poverty trap.At the other extreme, 35% of the cantons are territories that are adjacent to each other with low rates of extreme poverty with UBN, where the majority of the population has their basic needs satisfied.In Table 3, it can be seen that in the first analysis period 1990-2001, approximately one-third of the cantons (32.6%) are in a spatial poverty trap.At the other extreme, 35% of the cantons are territories that are adjacent to each other with low rates of extreme poverty with UBN, where the majority of the population has their basic needs satisfied.Figure 12 shows that for the year 2001, the number of cantons that were in a spatial poverty trap was 73, which was distributed as follows: • Forty-two were located mainly on the Ecuadorian Coast in the provinces of Esmeraldas (four), Manabí (17), Los Ríos (seven), Guayas (12), Santa Elena (one), and El Oro (one).

•
Seven were located in the Ecuadorian East, corresponding to the provinces of Sucumbíos (two), Orellana (one), Morona Santiago (one), and Zamora Chinchipe (three).The remaining three correspond to the non-delimited zones, which were already mentioned.
In the second period (2001-2010), 75 cantons were in a poverty trap; that is, 33.5% of the cantons remained in a situation in which the UBN of a significant number of their inhabitants continued to be unmet or unsatisfied; while in 84 cantons, their population, due to structural factors or the attention (investment) by the state, preserved living conditions superior to the national averages by relating them spatially and temporally (Graph 8).In 2010, of the 75 cantons that were in a spatial poverty trap (Figure 13):     As seen, the poverty trap at spatial level is present in 17 provinces of Ecuador.However, there are seven provinces where all of the cantons that form them are free of this problem: Carchi, Imbabura, Tungurahua, Pichincha, Santo Domingo, and Napo.All of these are located in the north of the country, neighboring each other and with a strong interaction with the capital city of the republic, Quito.
In general, the cantons that two decades ago had serious difficulties satisfying their basic needs were the same ones in 2010, except for a few cases.As seen, the poverty trap at spatial level is present in 17 provinces of Ecuador.However, there are seven provinces where all of the cantons that form them are free of problem: Carchi, Imbabura, Tungurahua, Pichincha, Santo Domingo, and Napo.All of these are located in the north of the country, neighboring each other and with a strong interaction with the capital city of the republic, Quito.
In general, the cantons that two decades ago had serious difficulties satisfying their basic needs were the same ones in 2010, except for a few cases.In addition, it is observed that the nine cantons that escaped the poverty trap are those that presented on average a reduction of 21 points in the poverty trap.These values exceeded the average of poverty reduction of the 224 cantons analyzed, which was 16 points.This is mainly due to the improvement in the indicators of the dimensions: access to basic education, access to housing, and access to basic services.

Conclusions
The territorial imbalances of access conditions to meet the basic needs of the population in cantons have been evident in the spatial analysis carried out.The different models of development in Ecuador during the last two decades have not enabled the cantons that were already in this situation to leave the trap of extreme poverty with UBN.Furthermore, a lack of attention and investment by the state and local governments has not been carried out homogeneously throughout the territory, whose consequence is the presence of different realities and agglomerations whose main characteristics are exclusion and the deprivation of services and favorable conditions.
The presence of clusters of high and low quality of life at the cantonal level, as measured by the UBN, was observed.When comparing these clusters with some of the main cities of the country, where most of the population and production of the country is concentrated, it is observed that for the case of high-quality life clusters (Low-Low), their vicinity to the city of Quito is determinant, which also has a direct influence on their classification.Similar behavior is shown in the cantons that are adjacent to the cities of Cuenca and Machala.However, the same is not true for the cantons that have a very close proximity to the city of Guayaquil on the Ecuadorian coast.
The importance of these types of studies for Ecuador lies in the need for the geographic identification of clusters, whereby profiles, situations, and categorizations of territories that share common characteristics can be obtained.In the same way, hubs of development or of economic and social backwardness of regions can be obtained, as well as degrees of influence or geographic patterns that have brought changes in their condition over time.The results of this study can be used to better focus resources, projects, and programs aimed at improving the living conditions of the population of the affected municipalities; this is because currently, public policies must consider the territorial component to set the guidelines and strategies by the state.
The limitation of this research is the unavailability of disaggregated updated data at cantonal level, so the most recent information used corresponds to the 2010 census.However, the results obtained will allow in the future identifying the evolution of poverty traps over three decades with the application of the census planned for 2020.
Source: Prepared by the National Institute of Statistics and Censuses (INEC) of Ecuador [16].
. The positive ones are shown in quadrants I and III, and the negative ones are shown in quadrants II and IV.Positive spatial autocorrelation refers to high values of the variable surrounded by high values or low values of the variable surrounded by low values, and negative spatial autocorrelation refers to high values of the variable surrounded by low values, or low values of the variable surrounded by high values (Table

Figure 7 .
Figure 7. Poverty clusters by municipalities in the year 1990.Source: Own elaboration.Figure 7. Poverty clusters by municipalities in the year 1990.Source: Own elaboration.

Figure 7 .
Figure 7. Poverty clusters by municipalities in the year 1990.Source: Own elaboration.Figure 7. Poverty clusters by municipalities in the year 1990.Source: Own elaboration.Sustainability 2018, 10, x FOR PEER REVIEW 11 of 18

Figure 8 .
Figure 8. Poverty clusters by municipalities in the year 2001.Source: Own elaboration.

Figure 9 .
Figure 9. Poverty clusters by municipalities in the year 2010.Source: Own elaboration.

Figure 9 .
Figure 9. Poverty clusters by municipalities in the year 2010.Source: Own elaboration.

Figure 9 .
Figure 9. Poverty clusters by municipalities in the year 2010.Source: Own elaboration.

For
the two periods, it can be seen that the majority of points, representing each of the cantons, are in the first and third quadrants.Therefore, a positive correlation between the periods analyzed is shown; this is a situation confirmed by Moran scatter plots, which show values of 0.29 for 1990-2001 and 0.27 for 2001-2010.

Figure 9 .
Figure 9. Poverty clusters by municipalities in the year 2010.Source: Own elaboration.

Figure 12 .
Figure 12.Location of municipalities in a poverty trap condition in 2001.Figure 12. Location of municipalities in a poverty trap condition in 2001.

Figure 12 .
Figure 12.Location of municipalities in a poverty trap condition in 2001.Figure 12. Location of municipalities in a poverty trap condition in 2001.

Figure 12 .
Figure 12.Location of municipalities in a poverty trap condition in 2001.

Figure 13 .
Figure 13.Location of municipalities in a poverty trap condition in 2010.Source: Own elaboration.
From the initial situation in 1990-2001, of the 73 cantons located in the quadrant AA (High-High), 10 years later, 64 (88%) of them continue in a similar situation.Eleven cantons that were not in AA are now in this category (Colta and Guamote in Chimborazo, Pujilí in Cotopaxi, Huamboya, Taisha, and Pablo Sexto in Morona Santiago, Arajunjo in Pastaza, Sigsig in Azuay, Chillanes in Bolívar, Saraguro in Loja, and Libertad in Santa Elena), and only nine (12%) of them (Buena Fé and Ventanas in Los Ríos, Alfredo Baquerizo Moreno in Guayas, Las Lajas in El Oro, Santa Isabel in Azuay, El Tambo in Cañar, Cuyabeno in Sucumbíos; Nangaritza

Figure 13 .
Figure 13.Location of municipalities in a poverty trap condition in 2010.Source: Own elaboration.
From the initial situation in 1990-2001, of the 73 cantons located in the quadrant AA (High-High), 10 years later, 64 (88%) of them continue in a similar situation.Eleven cantons that were not in AA are now in this category (Colta and Guamote in Chimborazo, Pujilí in Cotopaxi, Huamboya, Taisha, and Pablo Sexto in Morona Santiago, Arajunjo in Pastaza, Sigsig in Azuay, Chillanes in Bolívar, Saraguro in Loja, and Libertad in Santa Elena), and only nine (12%) of them (Buena Fé and Ventanas in Los Ríos, Alfredo Baquerizo Moreno in Guayas, Las Lajas in El Oro, Santa Isabel in Azuay, El Tambo in Cañar, Cuyabeno in Sucumbíos; Nangaritza in Zamora Chinchipe, and El Pedrero-non-delimited zone) have overcome the initial situation of the spatial poverty trap.
developed a poverty map and an econometric model based on an indicator of poverty or inequality at household level, with data from the censuses of 1990, 2001, and the surveys of living conditions for the years 1994 and 1999.(7) SIISE-STMCDS [19], Secretaría Técnica del Ministerio de Coordinación de Desarrollo Social (STMCDS) developed a poverty map that shows information on poverty indicators for consumption and inequality, disaggregated at cantonal and parochial level.It is based on the 2005-2006 Living Conditions Surveys and the Population Census of 2001.

Table 2 .
The Moran Scatter Plot.

Table 3 .
Spatial lag of the UBN