Agroecological and Social Transformations for Coexistence with Semi-Aridity in Brazil

This article explores whether a shift in development paradigm resulted in coexistence with semi-aridity for residents of the Semi-Arid region of Brazil (SAB). If so, which strategies contributed and which conditions facilitated it? We conducted a comparative analysis of the transformations that occurred in 10 territories of the SAB during two time periods: PI (1973–2001) when “development” policies almost exclusively aimed to “combat drought and its effects”; and PII (2002–2016) when a concept of coexistence with semi-aridity informed policy making. Our study from the 10 territories of the SAB show significant changes between PI and PII. On average, there was a substantial improvement in Access to Water Infrastructure (+33%∆), Diversification of Production Systems (Animals +36%∆; Crops +61%∆), Management of Common Pool Resources (+45%∆), Involvement in Spaces of Political Organizing (+24%∆), and Access to Public Programs (+29%∆). As such, “coexistence” went from concept to action as a consequence of structural, agroecological, social, and management transformations in combination with a strengthening of mechanisms for community reciprocity. These were characterized by (a) the creation of resource reserves for use during times of drought; (b) the efficient use of available natural resources; and (c) enhanced articulation between diverse actors.


Introduction
Drylands, with diverse levels of aridity, represent close to 40% of the continental landmass [1]. It is estimated that more than 42% of the world population inhabits these areas, accumulating life experiences connected to the particular climatic dynamics of these dryland regions [2][3][4][5][6]. Historically, the conceptualization of reality that has influenced the technical, economic, and social imaginary has built and institutionalized an image of problematic regions full of adversities [7]. Despite the opportunities in these regions, there exist few experiences where relationships have formed between the State and Society, where the population has had a voice and a say in decision making through a change of mentality by abandoning the indiscriminate use of natural resources and transforming harmful practices [17]. In brief, it signaled a rupture with a paradigm of adversities and the embrace of a paradigm of possibilities.
The objective of this article is to examine whether there has in fact been a realization of the proposed coexistence with semi-aridity, and if so, establish which general conditions contributed to it. This was accomplished using a comparative analysis of the transformations that occurred in 10 territories of the SAB in two time periods, PI (1973PI ( -2001

Materials and Methods
This study occurred in the context of a participatory research project called Monitoring Resilient Agricultural Systems in the SAB (Monitoramento Sistemas Agrícolas Resilientes no SAB), designed and realized in 2012-2016 by a collaboration between the National Institute of the Semi-Arid Region (Instituto Nacional do Semiárido, INSA) and ASA-Brasil, which brings together more than 3000 non-profit organizations that serve approximately 2 million families ( Figure 1). To realize our field research, we initially identified, selected, and mobilized local institutions associated with ASA-Brasil that worked with sustainable agriculture and/or strategies of coexistence with semi-aridity in 10 territories within nine states of the SAB. Subsequently, the institutions in each territory indicated communities and families with whom they worked and who participated in the programs Training and Mobilization for Coexistence with the Semi-Arid Region: 1 Million Rural Cisterns (Formação e Mobilização para a Convivência com o Semi-Árido: 1 Milhão Cisternas Rurais) and One Earth and Two Bodies of Water (Uma Terra e Duas Águas). In total, 45 families participated during a period of three years (five families per state). Using semi-structured interviews, local researchers and supporting organizations carefully documented the characteristics and mechanisms associated with management strategies for coexistence with drought, as well as efforts to recover these strategies.
Our analysis of each system leveraged a version of a timeline methodology (linha do tempo) [18]. This methodological instrument helped identify macro-indicators and their associated indicators related to agroecosystems (Table 1) and territories (Table 2). These indicators reflect the perception and knowledge of participating families, who highlighted the relevance of the indicators for their co-existence with semi-aridity. The following steps were taken: (1) qualitative characterization and historic review of the agricultural systems in the territories that we studied; (2) visits to the properties, to observe and understand the systems on family farms; (3) identification of the elements significant to the quality of life for families; and (4) revision, provisioning, and socialization of the results through 100 local workshops with communities in the study territories and six regional workshops with representatives from six regions encompassing all the study territories between 2012 and 2016. In parallel, the timeline was complemented by a qualitative description of interactions between components within the families' agroecosystems using resource flow diagrams that provided a complete visualization of information regarding economic, technical, and social management of family production units. The flow diagrams and qualitative descriptions supported the analytical process, but are not the primary focus of this article. Table 1. Macro-indicators and indicators associated with strategies for agroecosystem transformations aimed at coexistence with semi-aridity that were co-constructed during semi-structured interviews with families using a timeline methodology to track changes in the study territories between PI (1973PI ( -2001 and PII (2002PII ( -2016.

Macro-Indicator
Indicator Acronym  We analyzed the data from the timeline methodology using R [19]. The percentages presented in this study reflect the presence or absence of the indicators in both periods. The means for each period were compared using a t-test for paired data with 5% probability. In addition, the percentage of change between the time periods was calculated using the following equation:

Results
There was a significant difference between the means of the indicators analyzed for PII (2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016) in comparison with PI (1973PI ( -2001 for the 10 territories of the SAB that we studied (+39%∆, df = 479, p-value < 2.2 × 10 −16 ). This was a result of increased public policy reflecting coexistence with drought and the mobilization of inhabitants in processes facilitated by ASA-Brasil. In particular, these changes occurred as a result of the programs Coexistence with the Semi-Arid Region: 1 Million Rural Cisterns and One Earth and Two Bodies of Water that were implemented in cooperation with the Federal Government of Brazil. As such, Figure 2a  In the case of Physical Capital (PC), the Acquisition of Lands (AL, −11%∆) and Habitation (AH, −14%∆) were slightly better in PI compared to PII ( Figure 3). Nevertheless, PII exhibited better performance for the indicators of Infrastructure (PI, +29%∆) and the Acquisition of Equipment (AE, +51%∆) because once families acquire lands and habitation, they tend to invest in improving their productive capacity. We point out that despite the relative advances in the purchase of land verified by this study, the SAB generally continues to have a high concentration of landholdings. According to the National Brazilian Institute for Geography and Statistics [20], approximately 60% of landholdings less than 10 ha occupy only 3% of arable lands, while the 2.3% of properties greater than 200 ha occupy 46% of arable lands in the region. As such, the SAB continues to have a large concentration of land ownership, as well as of water access. In the case of Access to Water Infrastructure (AWI, Figure 4), there was an improvement in the diverse technologies used to access and harvest water. This was most dramatically captured with respect to Domestic Cisterns (DC, +58%∆) and access to Production Cisterns (PC, +95%∆). There was also an increase in Micro-Reservoirs (MR, +43%∆), Stone-lined Reservoirs (SR, +25%∆), Cement-lined Wells (CW, +45%∆), and Watering Holes (WH, +53%∆). The forms of water infrastructure with the greatest presence in all the territories during PII were DC, PC, and WH.

Discussion
The territories that we studied underwent substantial changes in PII related to technical innovations (i.e., domestic and production cisterns, crop associations, etc.) and social innovations (i.e., organization, participation, and public programs). The family farms in the 10 territories of SAB that we studied have promoted processes of improved production based on the valorization of local resources, the use of appropriate technologies, and agroecological management practices when combined with increased resource reserves-produce a greater circulation of resources within agroecosystems (Figures 2-9). Similar results have been described in different studies realized in other territories of the SAB [21][22][23][24], as well as in other countries of Latin America, Asia, and Africa [1,5,25,26]. In China, we highlight the "Rice-Fish-Duck Systems" [27,28], in Latin America, the polyculture systems known as "Milpas" [1,29,30]. In these traditional systems, the increase in productivity per unit of land can vary between 20% and 60% in relation to other sole cropping or monoculture systems under the same management conditions [1,29,31]. In Ethiopia, the system developed for cultivating enset (Ensete ventricosum) provides various foods, as well as medicinal plants, forage, and fuel for domestic use. The associated animal raising-cattle, sheep, goats, horses, and donkeys-provides an additional source of protein and satisfies a high demand for manure that is used to fertilize the fields of enset [5,29]. In the Sahel, farmers have learned that associations between trees and crops known as agroforestry generate a series of benefits. The shade of trees offers protection to crops against harmful heat and winds, and increases the productivity from closely associated crops. At the same time, reforestation enhances important ecosystem functioning, such as the protection of water sources, the conservation of biodiversity, and the dispersal of seeds by birds and bats [5]. These studies suggest that traditional strategies for the management of natural resources in drylands are fundamentally sustainable, even though they are repeatedly negatively affected by government policies [1,5].
In the particular case of the SAB's unstable water access, studies show that appropriate social technologies for the storage of rainwater (Table 1) lead to the adoption of initiatives that optimize the production of foods, that strengthen social organization, and that encourage the exchange of knowledge and innovative social practices [24]. Based on the local knowledge of social and productive technologies, the conditions are created to live in a sustainable way with semi-arid conditions, with the support of public policy. This of course requires the active participation and capacity to invent, reinvent, and propose new approaches that are incorporated in processes of organization and cooperation between organizations and social movements [32]. Regarding these processes, the concept of coexistence in the SAB has come to be understood based on its potential, the culture, the knowledge, and the capacity of people and social actors to create and recreate social processes that generate autonomy and empowerment [32]. This understanding provides visibility and coherence through the implementation of public policies that respond to the challenges faced by people.
Based on the accumulated experience of over four years of participatory research in the ten territories studied, and with the intention to better explain technical and social innovations (Tables 1 and 2, respectively) that represent a coexistence with semi-aridity comprised of agroecological strategies, we group the indicators identified in this study into three categories: (a) forming reserves of resources, especially water, nutrients, and energy; (b) reducing losses and increasing the efficient use of resources from family farms, such as soil, water, and organic matter; and (c) partnerships, organization, and synergetic relationships between diverse actors.

Forming Reserves of Resources for Use during Periods of Drought
Three strategies to highlight are (a) the capture of rainwater, (b) the implementation of local seed banks, and (c) the implementation of forage reserves. Technological innovations for rainwater capture include the Domestic Cisterns (DC) and Production Cisterns (PC) with storage capacities of 16 thousand liters and of 52 thousand liters, respectively. The primary capture of rainwater for DC is from the roofs of homes, and the water is used to drink and cook. This technology provides eight months of water for a family of five people. The second innovation, CP, captures water on a paved surface of 200 m 2 constructed directly on the soil. This paved area can capture 300 mm of rainfall and is sufficient to fill a cistern of 52 thousand liters that is lined with cement and built partly underground. Following the Map of Technologies of ASA-Brasil (2017), thus far there have been 595,524 Domestic Cisterns and 94,905 Production Cisterns built. These innovations have positively affected the economy of families, as was demonstrated by an economic analysis in Cariri, Paraíba [33]. The analysis compared the economy of families before and after accessing the water infrastructure. It was verified that with the presence of DC and PC, families obtained respectively 3.3 and 9 times greater profitability than without the technologies in terms of gross and agricultural profitability [33]. These systems for the better use of rainwater, for decades, have been used intensively in many arid and semi-arid regions of Africa, Asia, Europe, the Americas, and Oceania [34,35].
Another innovation is the creation of Family Seed Reserves (FSR) and Community Seed Banks (CSB), which make important contributions toward the food sovereignty of residents in the SAB [34,36,37]. Currently, 640 seed banks have been built in the region. Finally, we highlight the stocking of forage to feed animals in periods of drought. The most common technologies are to make hay and silage of native plants and crop residues, as well as living stocks of cacti such as Opuntia ficus-indica and Napolea cochenillifera (common name: Nopal Forrajero), Policereus gounelli (common name: Xique-Xique), and Cereus jamacaru (common name: Mandacarú).

Reducing Losses and Increasing Efficiencies on Family Farms
Based on the variability and intensity of rains in the region of SAB, the agroecosystems operate in accordance with the patterns of resource availability, and are greatly moderated by the availability of water [12,38]. Under these conditions, the innovations implemented by families are aimed to reduce losses of natural resources-water, soil, and nutrients-while increasing their usage efficiency based on strategies of (a) reforestation and biological diversification of agroecosystems with animal and crop species capable of more rapidly mobilizing spikes in resource availability while also introducing soil conservation practices (contour ditches, stone barriers, and organic soil amendments), and (b) management of native vegetation where it has not been removed totally and remains within and surrounding the farms.
Reforestation and diversification of agroecosystems buffer them from the negative effects of high climatic variability and simultaneously increase the production of biomass by more than 70% [39,40]. These technological innovations produce excellent protein reserves and thus promote a greater stability in the production of biomass for animal consumption. Moreover, the production of biomass, reforestation, and diversification of agroecosystems of the SAB enable the harvesting of firewood, an important energetic source that meets the domestic needs of local families, representing 33% of the energetic supply in the region [41,42]. Similarly, posts and branches are used to construct fences and wooden barriers perpendicular to the slope to protect soils [43]. These practices often are complemented by soil conservation management techniques-small diffusion and infiltration canals, terraces, stone barriers, and living barriers of cacti-that regulate water flows and increase water infiltration [21]. Investigations indicate a reduction of 80% in the loss of soil by erosion [43][44][45] and increases of 25-150% in levels of soil organic matter in soils [39,[46][47][48]. The living barriers of prickly pear cactus (Opuntia sp.) are capable of retaining up to 100 t ha −1 of soil per year [46].
There exists the potential for the sustainable management of native vegetation and forest resources where native vegetation still exists. These practices basically consist of removing non-forage vegetation and managing those species with the greatest forage potential through pruning and thinning. This increases the availability and productivity of forage without causing significant impacts on native biodiversity or on soils.
Another strategy for the management of native vegetation that applies specifically to the state of Bahía is called Forage Stocks (Fundos de Pastos) or Communities of Pasture Stocks (Comunidades de Fundos de Pastagens). In these systems, animals pasture in a collective area of native vegetation that can reach up to 3000 ha, which also allows the harvest of native fruits that are processed in micro-enterprises. For example, we reference the case study of Forage Stocks in Areia Grande, Bahía, an area where 365 families reside and work in a communal management of 27 thousand hectares of native vegetation (Caatinga) with very few individualized agricultural or animal production activities. During the dry periods, they obtain 30 tons of honey. Goats and sheep produce meat, milk, cheese, and hides without economic losses during the entire dry period. It is a system with elevated levels of autonomy, flexibility, and resilience to the climatic variability of the region as well as in terms of commercial relationships and dependence on external actors. Similar experiences have been described in other regions of the world [1,[3][4][5][6]26].
These are the strategies that now provide the conditions for goats, sheep, fowl, pigs, cattle, and herbaceous and arboreal plants to share space within family farms of the SAB. They create different subsystems that provide food security and generate economic resources with the sale of surplus production in farmers' markets and to national food purchasing programs.

Partnerships, Organization, and Synergy between Diverse Actors
A reflexive and collaborative intervention increases solidarity over time in the shape of networks, associations, cooperatives, and social movements with the possibility to imagine and implement new public policies that enhance democratic access to water for the consumption of animals, crops, and humans [37]. Training in the collective management of resources reinforces strategies of coexistence with semi-aridity. Thanks to these engagements, technical and social innovations are communicated and discussed in all territories of the SAB, following open processes of learning, co-education, questioning, consensus building, and the formulation of proposals and questions.
Processes of articulation, organization, and communication strengthened the autonomy and self-confidence of families, providing conditions to create, experiment, and replicate technologies [37]. In this way, these families spread processes of investigation and popular education. The exchange and co-construction of knowledge through participatory engagements result in multiple opportunities for synergy between actors, such as exchanges between communities, as well as municipal and provincial gatherings that now reach the national level in the National Meeting of Farmer Researchers (Encontro Nacional de Agricultores Investigadores, ENCONASA).
"Synergy" refers to a qualitatively greater advancement of ideas that occurs through the discussions at these meetings than the sum of what every participant could achieve on their own. For meetings to be synergetic, it is necessary to provide the necessary conditions through activities-in addition to focusing on technical knowledge-that stimulate the formation of friendship and solidarity based on a sense of mutual understanding that it is possible to build a more humanistic world.
The experiences of each family are synthesized in a magazine known as Candilero. At the moment of writing this article, 1269 experiences have been published and 48,250 exchanges between farmers have occurred. These processes awaken a collective strength, developing in the participants the power to advocate and demand steps toward the construction of public programs relevant to the region.
No doubt there is much more to do. According to the National Brazilian Institute for Geography and Statistics [20], social indicators are well below national and regional averages, and the majority of the SAB has experienced a slow growth due to a lack of basic infrastructure. Approximately 60% of the municipalities in the region have a human development index that varies between very low (0.5) and low (0.6), which is less than the national human development index (0.72). The per capita gross domestic product is less than 60% of the national average. Illiteracy oscillates between 36% and 46%, in approximately 46% of the municipalities.

Conclusions
The period from 2002-2016 increased the capacity of residents to mobilize the resources needed for technical and social reproduction in the 10 territories analyzed due to exchanges with nature-through the process of labor-and due to exchanges regulated by the communities (relations of reciprocity, organization, etc.). In this particular case study, and based on our experience during the entire process of investigation, we wish to highlight that coexistence went from a concept to action as a consequence of structural transformations of society and management practices in combination with a strengthening of mechanisms for communal reciprocity. This involves a coexistence characterized by (a) social mobilization and the establishment of channels to store resources for use during periods of drought, (b) the reduction of lost resources from agroecosystems and the efficient use of available resources, and (c) partnerships, organization, and synergetic moments for communicating between diverse actors.
This holistic vision affirms that coexistence with semi-aridity in SAB was made possible by public programs that permit (a) the democratization and access to soil, biodiversity, and water, (b) agroecology as a science and process practiced in communities that revitalizes small properties, and (c) contextualized education. In the years that follow, it will be necessary to amplify and consolidate this development initiative for the SAB with the effective inclusion of different sectors of local inhabitants in the region, especially those who had been overlooked by government policies in other times. For the characteristics of climate and physiography of the SAB, interventions in the region should maximize socioeconomic benefits for the current generation while conserving the quality of the environment and the capacity of production for future generations. There are many possibilities for the SAB: native fruits, flowers, ornamental plants, fragrances, minerals, artisan crafts, food, and a large assortment of wealth derived from phytotherapeutics across the region, and all this without speaking of ecological services or the fields of art and science. The semi-arid region continues to be a major challenge for Brazil, both in regard to its uniqueness and diversity as well as its territorial reach and high populations, which requires a greater commitment from governments and Brazilian society as a whole.