This is a candidate’s thesis for the programme for Social Workers at the Linneaus University in Växjö. This study has the purpose to understand what protective-factors that may be important for children who grow up in a risk environment. This has been done through reading autobiographies written by adults who have been born and raised in destructive environments. The data has been collected with the use of a narrative analysis. The result has then been viewed and analyzed with the help of attachment-theory, a salutogene perspective and with ecological systems theory. The results from this candidate’s thesis shows that we have been able to identify protective factors in three major categories; Individual attributes, relationships and factors that exists outside of the family environment. These factors have been analyzed and explained through the perspective of attachment-theory, a salutogene perspective and with ecological systems theory. Our findings suggest that there exists several important relationships between our result, the previous research and what the theories suggest is important for children as protective factors. They are: basic need of security, need of development and understanding and finally an importance in the needs for children to have a sense of coherence.

Environmental governance is a challenging topic in development contexts. On the one hand, the traditional development paradigm is based on economic growth through environmental exploitation; on the other, environmental degradation reduces vulnerable populations’ options for development. In the last thirty years numerous attempts to integrate environmental concerns in development policies have proved unsuccessful, raising questions as to whether the current governance system can address the challenge. The literature on environmental management has focused on identifying rules for successful governance, leaving little space to explore the complexities of the interactions between actors and their environments, wherein the reasons for sustained degradation might lie. The questions that this thesis asks are: How do diverse groups of actors rationalize and interact with degraded ecosystems? And what role does the governance system play in codifying these interactions? To answer these questions, the thesis engages in an institutional study of Lake Titicaca, between Peru and Bolivia. The lake has witnessed a degradation of its bay in the last thirty years, as a result of urban and mining development in the region. A complex web of organizations that go from the bi-national to the community level manages Lake Titicaca. The investigation of the questions asked is particularly relevant in the current context, as the countries to which the lake belongs put forward significantly different visions of the environment. By drawing on the strengths of social-ecological systems frameworks proposed by the two mains schools – the Resilience Alliance and Bloomington Workshop – and filling some of their deficiencies using insights from the sociological literatures on negotiation and justification, I hope to have created a composite framework with which to give an insightful account of the complexity and diversity at play in the field. The thesis adopts a broad range of qualitative methods (observation, interviews, document analysis) completed with descriptive statistics for budget analysis. The thesis argues that the actors’ approaches to the ecosystem are complex, diverse and constitutive of social-ecological systems wherein relationships are negotiated between actors, between actors and the ecosystem and ‘within’ actors as they hold competing visions and strategies. Some of the variables shaping these negotiations are crafted through the interaction between social and ecological elements, which also influence the actors’ understanding of the system. Others are determined by parameters crafted in the social sphere, and the ways in which social-ecological interactions fit with those. Policy interventions to improve the condition of Lake Titicaca need a more sophisticated understanding of these social-ecological systems.

Thesis (PhD)--Stellenbosch University, 2012. / ENGLISH ABSTRACT: A study of the sustainability journey of Spier Holdings, a well known wine and leisure business in South Africa, offers a unique opportunity for interrogating corporate drivers for a lower carbon future. The business has established sustainability as a brand identity, declared carbon neutrality as a macro organisational goal in response to the global challenge of climate change, and sought scientifically and technologically appropriate ways of addressing this challenge. A preliminary analysis revealed various initiatives that are in place for measuring and reducing the business’ environmental impact, including carbon emissions. However, an in-depth study of the establishment’s environmental performance over two decades showed inconsistencies in year-on-year reporting, delays in shifting the supply chain, and gaps in implementation, particularly in the area of energy efficiency and adoption of renewable energy technology. Understanding and interrogating the business’ sustainability journey through a systems ecology and corporate citizenship framework proved inadequate. The case highlights that organizational goals for environmental performance areas, including the aim of carbon neutrality, and sustainability reporting are not sufficient catalysts for change. A complexity-based resilience approach allowed the business to be understood as an adaptive system. The sustainability story tracks different phases of a modified adaptive renewal cycle, which also determine the dominant management paradigms, strategic responses and forms of collaboration during each phase. Spier’s sustainability journey was found to be underpinned by a quest for corporate resilience which includes the resilience of the business (enterprise resilience) and of the social-ecological system within which it resides (SES resilience). The business responded to interdependent risks and uncertainties in its internal and external contexts, through investment strategies in key areas of corporate environmental performance. As a contribution to new knowledge, this thesis proposes an integrated corporate resilience framework for building enterprise resilience and ecological sustainability. This framework, and the accompanying mapping tool, reveals deep, ecological drivers for Spier’s environmental performance across corporate areas of lower carbon emissions, water sustainability, wastewater treatment, solid waste recycling and ecological custodianship. The framework is recommended for use by similar businesses, eager to configure their relationship with natural resources and ecosystem services, and by scholars, for investigating corporate performance towards environmental sustainability. / AFRIKAANSE OPSOMMING: ʼn Studie van die volhoubaarheidsonderneming van Spier Holdings, ʼn bekende wyn- en ontspanningsaak in Suid-Afrika, bied ʼn unieke geleentheid vir die ondersoek van korporatiewe aandrywers vir ʼn laer koolstoftoekoms. Die onderneming het volhoubaarheid as ʼn handelsmerkidentiteit gevestig, koolstof-neutraliteit as ʼn makro- organisatoriese doel verklaar in reaksie op die wêreldwye uitdaging van klimaatsverandering, en het wetenskaplik en tegnologies gepaste wyses gesoek om hierdie uitdaging die hoof te bied. ʼn Voorlopige analise het verskeie inisiatiewe wat gereed is vir meting en vermindering van die onderneming se omgewingsimpak aan die lig gebring, met inbegrip van koolstofvrystellings. ʼn Dieptestudie van die instelling se omgewingsprestasie oor twee dekades heen het egter inkonsekwenthede in jaar-tot-jaar-verslagdoening, vertragings in die verandering van die aanvoerketting, en gapings in implementering, in die besonder op die gebied van energiedoeltreffendheid en die ingebruikneming van hernubare energietegnologie getoon. Begrip en ondersoek van die onderneming se volhoubaarheidsonderneming aan die hand van ʼn raamwerk vir sisteemekologie en korporatiewe burgerskap het onvoldoende blyk te wees. Die geval beklemtoon dat organisatoriese doelstellings vir omgewingsprestasiegebiede, met inbegrip van die oogmerk van koolstofneutraliteit, en volhoubaarheidsverslagdoening nie voldoende katalisators vir verandering is nie. ʼn Kompleksiteitgebaseerde veerkragtigheidsbenadering het dit moontlik gemaak dat die onderneming as ʼn aanpassingstelsel beskou kan word. Die volhoubaarheidsverslag gaan verskillende fases van ʼn gewysigde aanpassings- hernuwingsiklus, wat ook die dominante bestuursparadigmas, strategiese reaksies en vorme van samewerking gedurende elke fase bepaal, na. Daar is bevind dat Spier se volhoubaarheidsonderneming onderstut word deur ʼn soeke na korporatiewe veerkragtigheid wat die veerkragtigheid van die onderneming (ondernemingsveerkragtigheid) en van die sosiaal-ekologiese stelsel waarbinne dit gesetel is (SES-veerkragtigheid) insluit. Die onderneming het op onderling afhanklike risiko’s en onsekerhede in sy interne en eksterne samehange gereageer deur beleggingstrategieë in sleutelgebiede van korporatiewe omgewingsprestasie. As ʼn bydrae tot nuwe kennis, doen hierdie tesis ʼn geïntegreerde korporatiewe veerkragtigheidsraamwerk vir die opbou van ondernemingsveerkragtigheid en ekologiese volhoubaarheid aan die hand. Hierdie raamwerk, en die gepaardgaande beskrywingsinstrument, lê diep, ekologiese aandrywers vir Spier se omgewingsprestasie oor korporatiewe gebiede van laer koolstof-vrystellings, watervolhoubaarheid, die behandeling van afloopwater, herbenutting van vaste afval en ekologiese bewaring bloot. Die raamwerk word aanbeveel vir gebruik deur soortgelyke ondernemings wat graag aan hulle verhouding met natuurlike hulpbronne en ekostelseldienste vorm wil gee, en deur vakkundiges vir die ondersoek van korporatiewe prestasie met betrekking tot omgewings-volhoubaarheid.

<p>The present study is one of the first attempts to analyze the societal importance of seagrasses (marine flowering plants) from a Natural Resource Management perspective, using a social-ecological systems (SES) approach. The interdisciplinary study takes place in East Africa (Western Indian Ocean, WIO) and includes in-depth studies in Chwaka Bay, Zanzibar, Tanzania. Natural and social sciences methods were used. The results are presented in six articles, showing that seagrass ecosystems are rich in seagrass species (13) and form an important part of the SES within the tropical seascape of the WIO. Seagrasses provide livelihoods opportunities and basic animal protein, in from of seagrass associated fish e.g. Siganidae and Scaridae. Research, management and education initiatives are, however, nearly non-existent. In Chwaka Bay, the goods and ecosystem services associated with the meadows and also appreciated by locals were fishing and collection grounds as well as substrate for seaweed cultivation. Seagrasses are used as medicines and fertilizers and associated with different beliefs and values. Dema (basket trap) fishery showed clear links to seagrass beds and provided the highest gross income per capita of all economic activities. All showing that the meadows provide social-ecological resilience. Drag-net fishery seems to damage the meadows. Two ecological studies show that artisanal seaweed farming of red algae, mainly done by women and pictured as sustainable in the WIO, has a thinning effect on seagrass beds, reduces associated macrofauna, affects sediments, changes fish catch composition and reduces diversity. Furthermore, it has a negative effect on i.a. women’s health. The two last papers are institutional analyses of the human-seagrass relationship. A broad approach was used to analyze regulative, normative and cultural-cognitive institutions. Cooperation and conflict take place between different institutions, interacting with their slow or fast moving characteristics, and are thus fundamental in directing the system into sustainable/unsustainable paths. Ecological knowledge was heterogeneous and situated. Due to the abundance of resources and high internal control, the SES seems to be entangled in a rigidity trap with the risk of falling into a poverty trap. Regulations were found insufficient to understand SES dynamics. “Well” designed organizational structures for management were found insufficient for “good” institutional performance. The dynamics between individuals embedded in different social and cultural structures showed to be crucial. Bwana Dikos, monitoring officials, placed in villages or landing sites in Zanzibar experienced four dilemmas – kinship, loyalty, poverty and control – which decrease efficiency and affect resilience. Mismatches between institutions themselves, and between institutions and cognitive capacities were identified. Some important practical implications are the need to include seagrass meadows in management and educational plans, addressing a seascape perspective, livelihood diversification, subsistence value, impacts, social-ecological resilience, and a broad institutional approach.</p>

Small-scale fisheries employ many millions of people around the world, and are particularly important in developing countries, where the dependency on marine resources is high and livelihood diversification options are scarce. In many areas of the world however, small-scale fisheries are at risk which threatens the food security and wellbeing of coastal people. Small-scale fisheries management has in many cases been insufficient and new comprehensive approaches are recommended to achieve social-ecological sustainability in the long-term. The aim of this thesis is to analyze empirically how social-ecological elements of seagrass-associated small-scale fisheries in the Western Indian Ocean region can be addressed for a transformation from the current mostly degraded state to more sustainable social-ecological systems and secure future livelihoods. The main method used was semi-structured interviews with local fishers. The main findings show the crucial contributions seagrass-associated small-scale fisheries make to food security and income generation and highlight the need to acknowledge the social-ecological importance of seagrasses in the seascape (Paper I). A discrepancy between low societal gains of the fishing of sea urchin predator fish species and their crucial importance in the food web (in controlling sea urchin populations and the associated grazing pressure on seagrasses) was identified (Paper II). These results suggest catch-and-release practice of sea urchin predator fish species, which could contribute to more balanced predator – sea urchin – seagrass food webs in the long run. The use of illegal dragnets was identified as a major threat to local seagrass meadows (Paper IV). Institutional elements influencing the use of such destructive dragnet were identified to be normative, cultural-cognitive and economic, which constitutes an institutional misfit to the current emphasis on regulative elements in a hierarchical manner (Paper III). Concerning future co-management initiatives, gear restrictions and education were the favoured management measures among all fishers (Paper IV). A majority of fishers were willing to participate in monitoring and controls, and most fishers thought they themselves and their communities would benefit most from seagrass-specific management. These findings highlight the need for actions on multiple scales, being the local-, management-, policy- and governance levels. The suggested actions include: education and exchange of ecological and scientific knowledge, gear management including the cessation of dragnet fishing, strengthening of local institutions, an active participation of fishers in enforcement of existing rules and regulations and an introduction of adequate alternative livelihood options. / <p>At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 1: Manuscript. Paper 4: Manuscript.</p>

Coastal Indigenous Peoples worldwide have relied on fish and other marine resources for millennia, and continue to do so despite recent degradation of ocean systems. Their traditional ecological knowledge, comprised of experiences, observations, beliefs, and lifeways, is relevant for modern marine management and conservation. This thesis explores the utility of traditional and local ecological knowledge for extending an understanding of changes over time for places or periods in which scientific data are unavailable. This thesis had three goals: 1) undertake research that is collaborative and inclusive, and that addresses priorities established by participating First Nations; 2) contribute to fisheries management and conservation recommendations by focusing on a species of cultural importance and exploring the applications of traditional and local ecological knowledge to species-level understandings; and 3) contribute a marine social-ecological case study that investigates the use of traditional and local ecological knowledge to understand change over time and provides appropriate context. Two main objectives allowed me to accomplish my goals: 1) demonstrate the application of traditional and local ecological knowledge to establish historical baselines that extend farther back in time than scientific surveys, and investigate reasons for changes, and 2) investigate the utility of a social-ecological trap framework in assessing impacts to a social-ecological system and identifying ways to escape such a trap. My case study occurred in collaboration with four First Nations (as many Indigenous Peoples of Canada are called) on the Central Coast of British Columbia, Canada. My methods included semi-structured interviews with knowledge holders to examine traditional and local ecological knowledge of a culturally and economically important species, Yelloweye rockfish (Sebastes ruberrimus). In this study, I interviewed First Nations fishers and Elders (n=43), asking about: observed changes to the body sizes (length) and abundance of this species over the last ~60 years, the factors driving these changes, stewardship principles or traditional management strategies, concerns for marine resources, and perceived opportunities for cultural revitalization. I then quantified the interview participants’ current and historical estimates of size and abundance, compared interview data to current biological survey data, and qualitatively analyzed responses regarding stewardship, culture, perceived threats, and cultural solutions. I utilized the framework of a social-ecological trap to analyze responses about stewardship, traditional stories or management, and threats to culture, selecting illustrative quotes to contextualize the lived experiences of participants. Overwhelmingly, respondents had observed a decrease in Yelloweye rockfish body sizes since the 1980s. Median historical length observed by participants was nearly twice the modern length. Participants reported substantial decrease in Yelloweye rockfish abundance since the 1980s, and most stated that this change was evident in the early 2000s. Sizes of modern Yelloweye rockfish estimated by participants resembled measurements from ecological data recorded concurrently at the study region. Thus, my study extends baseline historical data of Yelloweye rockfish reliably by about 50 years. Questions about traditional stories and culture revealed the presence of a social-ecological trap created and reinforced by the interplay between species decline and colonization (e.g. the residential schooling system). When asked about traditional management or stewardship practices, only one participant could remember specific traditional stories about Yelloweye rockfish, though all participants expressed adherence to the stewardship principles of taking only what is needed and respecting all life. Though participants expressed concern about the muting of traditional ecological knowledge, culture, and language, they also highlighted key ways towards revitalization and Indigenous resurgence. The ubiquitous presence of stewardship principles suggests there are ways beyond the social trap: participants described on-going cultural revitalization efforts, recovery of depleted species and ecosystems, and the reassertion of Indigenous management rights as ways to overcome problems inherent to the social-ecological trap. My research adds to a growing body of literature that supports the use of traditional and local ecological knowledge in marine management and conservation science. Adding to this literature, my work suggests the significant value of traditional and local ecological knowledge for filling gaps in historical scientific data or in data-poor regions, and highlights the importance of appropriately contextualizing Indigenous knowledge. To overcome the social-ecological trap of knowledge loss and to achieve informed marine management, reassertion of Indigenous management rights and application of traditional management strategies to modern fisheries management is vital. / Graduate / 0326 / 0768 / 0416 / eckertleckert@gmail.com

O presente trabalho buscou reproduzir, a partir de simulação computacional utilizando modelagem baseada em agentes, a dinâmica do sistema sócio-ecológico que conecta comunidades quilombolas do Vale do Ribeira, São Paulo, ao palmito jussara (Euterpe edulis Martius), espécie considerada ameaçada de extinção e cuja exploração, atualmente, pode ser descrita como uma Tragédia dos Comuns. Com base na teoria acumulada de recursos comuns, em dados empíricos do sistema social quilombola e na dinâmica populacional do palmito, simulamos o impacto de duas políticas públicas distintas de gestão do recurso: a primeira é a proibição estatal de exploração do mesmo, que criminaliza os palmiteiros e não está surtindo os efeitos desejados de preservação; a segunda, projeta um cenário hipotético no qual o Estado flexibiliza as regras de exploração e permite que a comunidade gerencie o recurso. Ao comparar o estoque final de palmito jussara para diversos cenários, concluimos que existe um grande potencial para que a gestão comunitária do recurso traga benefícios econômicos às famílias quilombolas, ao mesmo tempo em que contribui para a preservação do mesmo na natureza. / This study intended to use agent-based modeling to reproduce the dynamics of the social-ecological system that connects the quilombola communities that live in the Ribeira Valley, São Paulo, to the palm tree Euterpe edulis Martius, an endangered species highly valued for its heart of palm, which has being heavily harvested and can be considered an example of a Tragedy of the Commons. Based on the theory on common-pool resources, empirical data regarding the quilombola social system and on the palm tree population dynamics, we simulate the impact of two different public policies towards the palm tree conservation: the first scenario is the current total-prohibition of extraction policy, which marginalize harvesters and is not working prom an environmental perspective; the second scenario simulates a hypothetical situation in which allows the community to explore and manage the resource. After comparing the final stock of Euterpe edulis for many conditions, we may conclude that there is a great possibility that community-level management is more able to bring economic benefits to the quilombola families, while also help to preserve the species.

No Nordeste do Brasil, o estuário do Rio São Francisco apresenta extensas áreas de manguezais (32 km2) cujos recursos são utilizados por populações humanas. Este estudo considerou a metodologia de sistemas sócio-ecológicos complexos para analisar a pesca nos manguezais desse estuário, com ênfase no caranguejo Ucides cordatus. Por meio da integração de dados de diferentes áreas (etnobiologia, levantamentos socioeconômicos, estrutura populacional do caranguejo, características da vegetação, arranjo espacial da paisagem, sensoriamento remoto e geoprocessamento) em uma análise multicritério foi determina e mapeada a aptidão dos manguezais para a conservação e a pesca dessa espécie. Uma diversidade de recursos pesqueiros do manguezal (por exemplo, peixes, caranguejos e moluscos), constitui a principal base da economia de subsistência local, em que o caranguejo U. cordatus é o mais importante. As populações locais possuem um vasto conhecimento sobre o tamanho populacional e corporal, ciclo de vida, diferenciação sexual e habitat dessa espécie, e aplicam práticas conservacionistas no uso da redinha. A estrutura populacional do caranguejo revelou um alto potencial pesqueiro, com maior abundância de caranguejos de tamanho comercial do que os de tamanho não comercial. Os manguezais mais aptos para a conservação de U. cordatus (9,4 km2) estão localizados próximos à foz e apresentam alta abundância de caranguejos não comerciais, baixa densidade de caranguejos comerciais e baixo grau de utilização para a pesca. Os manguezais mais aptos para a pesca (10,2 km2) estão distantes da foz e apresentam alta abundância de caranguejos de tamanho comercial, baixa densidade de caranguejos em tamanho não comercial, caranguejos grandes, médio a alto grau de uso e estão próximos aos povoados. Os mapas de aptidão gerados podem auxiliar as agências governamentais no delineamento de áreas extrativistas e de exclusão da pesca, como sugerido no Plano Nacional de Gestão para o Uso Sustentável do Caranguejo-uçá / In Northeastern Brazil, the São Francisco River Estuary comprises a significant mangrove area (32 km2) used by local human populations. This study considered the framework of socio-ecological systems to analyze the mangrove fishery in this estuary, with emphasis on the crab Ucides cordatus. By the integration of data from different fields (etnobiology and socio-economic surveys, crab population structure, vegetation features, landscape arrangement, remote sensing and geoprocessing) in a multi-criteria analysis, we determined and mapped the suitability of the mangroves for the conservation and fishery of this species. We found that a diversity of mangrove fisheries (e.g. fish, crabs and mollusks) constitute the main base of the local subsistence economy, wherein the Ucides cordatus is the most important. The local populations have a substantial knowledge about this crab population and body sizes, life cycle, sexual differentiation, behavior and habitat, and apply conservation practices in the use of the \"redinha\". The population structure of the crab U. cordatus revealed a high fishery potential, with higher abundance (frequency and density) of crabs in commercial size than the non-commercial sized crabs. The mangroves more suitable for the crab conservation (9.4 km2) are those close to the river mouth, showing high abundance of non-commercial crabs, low density of commercial crabs and low degree of use for fishery. On the other hand, the mangroves more suitable for the crab fishery (10.2 km2) are those located far from to river mouth, showing high density and frequency of crabs in commercial size, low density of crabs in non-commercial size, big sized crabs, medium to high degree of use, and are close to the fishery villages. The maps of suitability can aid government agencies in delineating extractive and fishery exclusion areas, as stated by the Proposal of a National Management Plan for this crab, in order to achieve a sustainable fishery

O sistema de produção de café orgânico vem surgindo como uma alternativa tecnológica e economicamente rentável, que visa eliminar os impactos ambientais provocados pelo uso irracional dos recursos naturais. Muitas experiências e análises apontam a biodiversidade como precursora da estabilidade biológica encontrada nesses agroecossistemas produtivos diversificados (SAFs). No entanto, são incipientes os estudos científicos sobre o efeito da biodiversidade nos sistemas agrícolas de produção. Assim, o maior desafio da pesquisa foi identificar qual o sistema de manejo propiciava mais sinergismos biológicos, serviços ecológicos-chaves, tais como o controle biológico da principal praga do cafeeiro. E é nesse sentido que a presente pesquisa foi desenvolvida, com o objetivo de avaliar se a biodiversidade presente nos agroecossistemas está relacionada com a estabilidade ecológica, ou seja, com o equilíbrio dinâmico da população de insetos, que em determinados níveis podem causar elevados danos econômicos à cultura do café. A pesquisa foi desenvolvida na região do Pontal do Paranapanema, nos sistemas agroflorestais conduzidos pelos agricultores assentados sob responsabilidade técnica do IPÊ (Instituto de Pesquisas Ecológicas), instituição responsável pela implantação dos SAFs, por meio do projeto intitulado \"Café com Floresta\". Tal estudo possibilitou um melhor entendimento do efeito da biodiversidade sobre agroecossistemas cafeeiros diversificados que não utilizam inputs externos (fertilizantes e agrotóxicos), além de propiciar uma análise e sistematização dos sistemas de manejo agroecológicos existentes nos assentamentos rurais, bem como a caracterização do manejo e das práticas agroflorestais realizadas pelos agricultores familiares, que envolvem aspectos socioeconômicos da produção. Dessa maneira, a pesquisa tem grande relevância científica, visto que, possibilitou averiguar que os arranjos agroflorestais estudados na região possibilitaram uma menor incidência da principal praga do cafeeiro (Coffea arabica), o bicho-mineiro (Leucoptera coffeella), mostrando que os SAFS são uma alternativa ecológica e social apropriada à agricultura familiar, uma vez que confere maior resiliência aos agroecossistemas. / The system of production of organic coffee is emerging as an alternative technology and affordable, which aims to eliminate the environmental impacts caused by irrational use of natural resources. Many experiments and analyzes indicate biodiversity as a precursor of biological stability found in these diverse productive agroecosystems. However, are incipient scientific about the effect of biodiversity on agricultural production systems studies. Thus, the biggest challenge of the research was to identify which system management propitiated more synergisms biological, ecological services - keys, such as biological control of major pest of coffee. And that is what this research was developed with the aim of evaluating whether the present biodiversity in agroecosystems is related to ecological stability ,ie, the dynamic balance of the insect population , which at certain levels can cause major economic damage the coffee culture. The research was conducted in the Pontal region in agroforestry systems driven by farmers settled under the technical responsibility of IPE (Institute for Ecological Research), the institution responsible for the implementation of the SAF, through the project entitled \"Coffee with Forest\". This study allowed a better understanding of the effect of biodiversity on diversified coffee agroecosystems that do not use external (fertilizers and pesticides) inputs, as well as providing an analysis and systematization of existing agroecological management systems in rural settlements, as well as the characterization and handling of agroforestry practices carried out by farmers, involving socioeconomic aspects of production. Thus, the research has scientific importance, since possible to ascertain that the studied agroforestry arrangements in the region allowed a lower incidence of major pest of coffee (Coffea arabica ) , the leaf miner (Leucoptera coffeella) , showing that the diversified coffee agroecosystems (SAF) are an appropriate ecological and social alternative to family farming, since it gives greater resilience to agroecosystems.

O presente trabalho buscou reproduzir, a partir de simulação computacional utilizando modelagem baseada em agentes, a dinâmica do sistema sócio-ecológico que conecta comunidades quilombolas do Vale do Ribeira, São Paulo, ao palmito jussara (Euterpe edulis Martius), espécie considerada ameaçada de extinção e cuja exploração, atualmente, pode ser descrita como uma Tragédia dos Comuns. Com base na teoria acumulada de recursos comuns, em dados empíricos do sistema social quilombola e na dinâmica populacional do palmito, simulamos o impacto de duas políticas públicas distintas de gestão do recurso: a primeira é a proibição estatal de exploração do mesmo, que criminaliza os palmiteiros e não está surtindo os efeitos desejados de preservação; a segunda, projeta um cenário hipotético no qual o Estado flexibiliza as regras de exploração e permite que a comunidade gerencie o recurso. Ao comparar o estoque final de palmito jussara para diversos cenários, concluimos que existe um grande potencial para que a gestão comunitária do recurso traga benefícios econômicos às famílias quilombolas, ao mesmo tempo em que contribui para a preservação do mesmo na natureza. / This study intended to use agent-based modeling to reproduce the dynamics of the social-ecological system that connects the quilombola communities that live in the Ribeira Valley, São Paulo, to the palm tree Euterpe edulis Martius, an endangered species highly valued for its heart of palm, which has being heavily harvested and can be considered an example of a Tragedy of the Commons. Based on the theory on common-pool resources, empirical data regarding the quilombola social system and on the palm tree population dynamics, we simulate the impact of two different public policies towards the palm tree conservation: the first scenario is the current total-prohibition of extraction policy, which marginalize harvesters and is not working prom an environmental perspective; the second scenario simulates a hypothetical situation in which allows the community to explore and manage the resource. After comparing the final stock of Euterpe edulis for many conditions, we may conclude that there is a great possibility that community-level management is more able to bring economic benefits to the quilombola families, while also help to preserve the species.