Made available in DSpace on 2017-07-10T18:33:20Z (GMT). No. of bitstreams: 1 Ivanete Daga Cielo.pdf: 2896308 bytes, checksum: eba773690ad66051b2112f47aa425a81 (MD5) Previous issue date: 2015-05-04 / Domestic broiler farming has stood out among other productive sectors in recent decades. The exponential performance of this sector allowed Brazil to assume a prominent position in the world ranking as the largest exporter and the third largest chicken meat farming. Although several Brazilian states farm this type of meat, farming is concentrated in the southern region. In Paraná, the broiler agroindustrial system is a consolidated activity mainly in the countryside and this important protein farming contributes significantly to the state economy. Presently, Paraná state is the largest producer and exporter in Brazil. In this scenario, the effectiveness in coordinating the broiler agroindustrial system and the adopted governance model has a fundamental role in the development and growth of the sector. Thus, this study aims to analyze the relationships that underlie the governance structure between poultry farmers and agroindustry, and broiler processing in the western mesoregion of Paraná. Therefore, as basis are used the assumptions and theoretical parameters, with emphasis in the Transaction Costs Economics. The analysis of the poultry production contracts between agribusiness and poultry farmers in the region under study served as empirical data, as well as the interviews with the agroindustry managers and poultry farmers. For data analysis, it is used the qualitative approach based on both the nature of the problem and the desired profoundness level. The main results showed that all the slaughter agroindustry and the poultry processing in the region use contracts as mechanisms for coordinating transactions between agents. In addition, this form of governance has enabled improvements in coordination throughout the poultry agribusiness system, reduction of transaction costs and operational and competitive advantages through the ease adaptation of agents to new market requirements. Such findings corroborate to other studies in the area and allows inferring that the form of governance presents itself as an assertive instrument of farming coordination and quality assurance of the poultry meat farming. However, comparing the theoretical framework of Transaction Costs Economics with the empirical findings and benefits provided by the contractual farming system, it was identified the presence of gaps in the relationship between producers and agroindustry, such as the unequal balance of strength between the agents and existence of informational asymmetries. Furthermore, it was identified the marked degree of asset specificity and the presence of opportunism and uncertainty in the contractual relationship. The analysis provided by this research can contribute to the discussion and elaboration of contractual models for poultry farming, aligned strategically to the interests of agents, in order to minimize any existing gaps in the relationship. / A produção nacional de frango de corte tem se destacado entre os demais setores produtivos nas últimas décadas. O exponencial desempenho do setor possibilitou ao Brasil assumir posição de destaque no ranking mundial, como o maior exportador e terceiro maior produtor de carne de frango. Apesar de vários estados brasileiros produzirem frango, a produção está concentrada na Região Sul do País. No Paraná, o sistema agroindustrial de frango de corte se consolidou, principalmente, no interior do Estado e a expressiva produção dessa proteína contribui significativamente para a economia estadual. Atualmente, o Estado é o maior produtor e exportador de aves do país. Nesse cenário, a efetividade na coordenação do sistema agroindustrial de aves de corte e no modelo de governança adotado assumem papel fundamental frente ao desenvolvimento e crescimento do setor. Assim, o presente estudo objetiva analisar as relações que permeiam a estrutura de governança entre os produtores rurais (avicultores) e as agroindústrias de abate e processamento de frango de corte na Mesorregião Oeste Paranaense. Para tanto, são utilizados como base os pressupostos e parâmetros teóricos da Nova Economia Institucional, com ênfase na Economia dos Custos de Transação. Os dados empíricos foram obtidos por meio da análise dos contratos de produção de aves, firmados entre as agroindústrias e os avicultores da região em estudo, bem como através de entrevistas realizadas com os gestores das agroindústrias e produtores de frango. Para a análise dos dados, utilizou-se da abordagem qualitativa, fundamentada tanto em função da natureza do problema quanto pelo nível de aprofundamento desejado. Os principais resultados apontam que a totalidade das agroindústrias de abate e processamento de aves da região em estudo utiliza-se de contratos como mecanismos de coordenação das transações entre os agentes. Comprovou-se, também, que essa forma de governança tem possibilitado melhorias na coordenação ao longo do sistema agroindustrial avícola, redução de custos de transação e operacionais e obtenção de vantagens competitivas através da facilidade de adaptação dos agentes às novas exigências do mercado. Tais achados corroboram com estudos de demais pesquisadores da área e permitem inferir que a forma de governança adotada se apresenta como um instrumento assertivo de coordenação da produção e garantia da qualidade da carne de frango produzida. Entretanto, confrontando o arcabouço teórico da Economia dos Custos de Transação com os achados empíricos, além dos benefícios propiciados pelo sistema contratual de produção, identificou-se a presença de hiatos na relação estabelecida entre produtores e agroindústrias, a exemplo da correlação desigual entre os agentes e a existência de assimetrias informacionais. Igualmente, identificou-se acentuado grau de especificidade de ativos, além da presença de oportunismo e incertezas na relação contratual estabelecida. A análise proporcionada por esta pesquisa pode contribuir para a discussão e construção de modelos contratuais para produção de aves, alinhados estrategicamente aos interesses dos agentes, a fim de minimizar eventuais lacunas existentes na relação.

Made available in DSpace on 2017-07-10T18:33:24Z (GMT). No. of bitstreams: 1 Luiz H Paloschi Tome.pdf: 2696610 bytes, checksum: 7bb8404b278f0997636eb1aa591651fa (MD5) Previous issue date: 2015-02-26 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Given the complex economic relations between the agents that comprise the Agribusiness Systems (SAG's) and the historical importance of national sugarcane sector, as well as the representation of Paraná State in the sector, the objective of this research was to analyze the factors influencing the choice of governance structures in the sugarcane agroindustry in Paraná. Thus, we analyzed from the perspective of New Institutional Economics (NIE) and Transaction Cost Economics (TCE), the characteristics of transactions, agents and organizational and institutional environments in which they operate the processing of sugarcane agro industries object of study. The research was qualitative, since it aimed to increase knowledge about transactions and the specific governance structures of each agribusiness, and to identify the factors that influence the contractual forms adopted. It was applied one multi case study in two called Paraná sugarcane agro industries Alfa and Beta. Data collection occurred through interviews and electronic correspondence with representatives of agro industries and the State of Paraná Bioenergy Producers Association (ALCOPAR), bibliographical research and document analysis. The results showed that the effects of institutional changes and the organizational environment on the choices of agro industries were the same for both agro industries, as expected since the analyzed companies are part of the same market, economic sector, institutional and organizational environments, and are located in the same state. It was observed that the changes in the institutional environment directly affected the ways to transact and the strategic positioning of companies, in addition, were also confirmed actions to change the institutional environment for agribusiness, with representatives in all spheres of government to the defense the sector's interests. It was evident that the organizational environment is well structured in SAG's sugarcane of Paraná and fundamental for raising the logistic efficiency of it. Regarding the influence of the characteristics of the transactions and the agents, uncertainty and bounded rationality were the most relevant factors in the choice of governance structures by Alfa, Beta was for the cooperative ideology (cooperative). Thus, the variables studied by NIE, asset specificity, frequency and uncertainty were the most shown to influence the choices of the analyzed agro industries governance structures, especially in relation to the supply of raw materials; reputation had a slight influence; and opportunism was not found. Finally, it was observed that there is empirical evidence of most theoretical points raised by the NIE to explain the choices of contractual forms. / Tendo em vista as complexas relações econômicas entre os agentes que compõem os Sistemas Agroindustriais (SAG s) e a histórica importância do setor canavieiro nacional, bem como, a representatividade do estado do Paraná no setor, o objetivo desta pesquisa foi analisar os fatores que influenciam a escolha das estruturas de governança na agroindústria canavieira paranaense. Para tanto, foram analisadas, sob a ótica da Nova Economia Institucional (NEI), as características das transações, dos agentes e dos ambientes organizacional e institucional em que estão inseridas as agroindústrias processadoras de cana-de-açúcar objeto de estudo. A pesquisa foi de caráter qualitativo, uma vez que visou aprofundar o conhecimento a respeito das transações e das estruturas de governança específicas de cada agroindústria, bem como, identificar os fatores influenciadores das estruturas de governança adotadas. Foi aplicado um estudo com duas agroindústrias canavieiras paranaenses denominadas aqui como Alfa e Beta. A coleta de dados se deu por meio de entrevistas e correspondência eletrônica com representantes das agroindústrias e da Associação de Produtores de Bioenergia do Estado do Paraná (ALCOPAR), pesquisa bibliográfica e a análise de documentos. Os resultados mostraram que os efeitos das transformações institucionais e do ambiente organizacional sobre as escolhas das agroindústrias foram os mesmos para as duas agroindústrias, resultado esperado já que as empresas analisadas fazem parte do mesmo mercado, setor econômico, ambientes institucional e organizacional, e estão localizadas no mesmo Estado. Observou-se que as modificações no ambiente institucional impactaram diretamente as formas de se transacionar e o posicionamento estratégico das empresas, além disso, também foram confirmadas ações voltadas à modificação do ambiente institucional pelas agroindústrias, com representantes em todas as esferas de governo para a defesa dos interesses do setor. Evidenciou-se que o ambiente organizacional é bem estruturado no SAG da cana-de-açúcar paranaense e fundamental para a elevação da eficiência logística do mesmo. De maneira geral, considerando as transações analisadas nos elos T2 e T3, a Agroindústria Alfa opta mais pela integração vertical e pela contratação direta, enquanto a Agroindústria Beta escolhe na maioria dos casos a contratação e a cooperação. No que tange as influências das características das transações e dos agentes, a incerteza e a racionalidade limitada foram os fatores mais relevantes nas escolhas das estruturas de governança pela Alfa, para a Beta foi a ideologia cooperativa (cooperativismo). Assim, das variáveis estudadas pela NEI, a especificidade dos ativos, a frequência e a incerteza foram as que mais demonstraram influenciar as escolhas das estruturas de governança das agroindústrias analisadas, principalmente em relação ao fornecimento de matéria-prima; a reputação teve uma influência discreta; e, o oportunismo não foi constatado. Por fim, observou-se que há uma comprovação empírica da maioria dos pontos teóricos apontados pela NEI para explicar as escolhas das estruturas de governança.

Made available in DSpace on 2017-07-10T18:33:26Z (GMT). No. of bitstreams: 1 Meridiana Gontareck.pdf: 3336234 bytes, checksum: 4abc0bffeb13edf942465b6c8c35e70d (MD5) Previous issue date: 2015-09-02 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The outsourcing of services in the agricultural process has been, especially in commodity chains, the choice of producers who seek skilled services and are also considering cost reduction. Therefore, the proposal of this dissertation aimed to investigate this movement of grain farming, specifically in soybean, wheat and corn. To prove the hypotheses of this study, it was performed a case study in rural communities of Alto Alegre, Dois Irmãos and Vila Paraíso, located in the city of Palotina. The research was based on quantitative and qualitative approaches and it aimed to analyze the occurrence of this phenomenon in the area surveyed. Data collection was performed using in loco interviews. The literature review sought to find factors that influences the choice of governance structures in the outsourcing process, from the perspective of New Institutional Economics (NIE), the characteristics of transactions, agents and the organizational and institutional environments in which they operate, aiming to identify collective actions present in the process, considering that Brazilian agribusiness has been marked by increasingly presence of partnerships between individuals and organizations. The results showed that hypothesis of the research, which were: the lack of financial resources, the size of the property and the cost reduction that influence the moment of choosing whether to immobilize machinery or outsource, entirely or some stages of the process; have been proved. Then, it was proposed for this search, to measure the outsourcing rates in order to present your real scenario, in order to point out the potential of this new governance structure present in grain farming. / A terceirização dos serviços no processo agrícola vem sendo principalmente nas cadeias de commodities, a opção dos produtores que buscam obter serviços qualificados atendendo-se também a redução de custos. Diante disso, a proposta da presente dissertação visa investigar essa movimentação na agricultura de grãos, especificamente nas culturas de soja, trigo e milho. Para comprovação das hipóteses da pesquisa, foi realizado então um estudo de caso nas comunidades rurais de Alto Alegre, Dois Irmãos e Vila Paraíso da cidade de Palotina-Pr. A coleta de dados se deu por meio de entrevistas in loco. A pesquisa foi elaborada com dados quantitativos e qualitativos e posteriormente, para verificar relevância, os dados encontrados foram transformados em gráficos. A revisão teórica buscou encontrar fatores que influenciam a escolha das estruturas de governança nesse processo, sob a ótica da Nova Economia Institucional (NEI), as características das transações, dos agentes e dos ambientes organizacional e institucional em que estão inseridas, com intuito de encontrar as ações coletivas presentes, sendo que o agronegócio brasileiro tem sido marcado pela presença cada vez maior de parcerias entre indivíduos e organizações. Os resultados mostraram que as hipótese da pesquisa se comprovaram e são eles: a falta de recursos financeiros, o tamanho da propriedade e a redução de custos que influenciam na hora da escolha por imobilizar maquinários ou terceirizar totalmente ou algumas etapas do processo. Propôs-se então nessa pesquisa, mensurar os índices de terceirização visando apresentar o seu real cenário, de modo a apontar as potencialidades desta nova estrutura de governança presente na agricultura de grãos.

Although private family organisations are prevalent role players in both the South African and international economies, limited research has been performed with regard to them. In terms of regulatory requirements, South African private organisations are neither legally required to comply with corporate governance principles, nor are they required to make their financial data available to the general public. Lack of available data, and limited available research, have resulted in an absence of clarity with regard to whether governance structures in private family organisations add any value to these organisations. This study therefore explores, through the use of a multiple-case study, how the individual private family organisations have structured their governance mechanisms, and the reasons as to why they chose to implement these structures. Both case studies revealed that governance structures, in general, add value. The implemented governance structures may even have contributed to the increase in financial performance over time. / Management Accounting / M. Phil. (Accounting Sciences)

Meine Dissertation beschäftigt sich mit den institutionellen Aspekten staatlicher Zahlungen für Ökosystemleistungen (Payments for Ecosystem Services „PES“) in China. Marktbasierte Ansätze zur Steuerung von Ökosystemleistungen, insbesondere von PES, wurden in den letzten Jahrzehnten als neue und innovative Politikinstrumente angesehen. Entsprechend diesem internationalen Trend sind PES auch in China populär, werden jedoch meist mit dem inländischen Begriff der Ökokompensation beschrieben. Einen wirtschaftlichen Anreiz für Verhaltensänderungen zu schaffen, wenn das Ökokompensations-Programm nur ein Ausgleich für gesetzliche Einschränkungen ist, kann eine Herausforderung darstellen. Die Merkmale der Ökokompensation unterscheiden sich von anderen nationalen PES-Programmen, da sich das Governance-Modell, die Eigentumsrechte und die gesellschaftlichen Strukturen in China stark von anderen Staaten unterscheiden. Die Ökokompensation steht vor vielen institutionellen Herausforderungen, wenn es darum geht, ökonomische Anreize für Verhaltensänderungen zu schaffen. Zahlungen für Ökosystemleistungen, die Elemente sowohl eines freiwilligen, marktbasierten als auch eines hierarchischen Systems kombinieren, um mit den besonderen institutionellen Rahmenbedingungen umzugehen, wurden bisher noch nicht ausreichend untersucht. Eine Wissenslücke besteht insbesondere hinsichtlich der Anpassung des Designs von PES an die institutionellen Rahmenbedingungen in China. Die Mechanismen von Zahlungen für Ökosystemleistungen in China unterscheiden sich in wichtigen Punkten von den aus der westlichen Erfahrung bekannten Mechanismen. Die vorliegende Dissertation zielt darauf ab, die Diskrepanz zwischen der allgemein gültigen Rahmung von Zahlungen von Ökosystemleistungen und der Realität ihrer Praxis zu verringern, indem sie eine institutionelle Analyse des chinesischen staatlichen PES-Programms vornimmt. Das Sloping Land Conversion Program (SLCP) gilt als eines der weltweit größten PES-Programme und ist ein wichtiger Bestandteil der Ökokompensation. Das erste Ziel dieser Dissertation ist es, anhand des SLCP als empirische Fallstudie zu verstehen, wie das institutionelle Design des staatlichen PES in China verbessert werden kann. Das zweite Ziel ist in einem breiteren internationalen Kontext zu sehen und zielt darauf ab, einen methodischen Beitrag zur Analyse der Governance von Ökosystemleistungen zu leisten. Die Dissertation folgt einer kumulativen Struktur, die aus einem Rahmentext besteht, in den fünf, von Experten begutachtete, Artikel aus internationalen Fachzeitschriften integriert sind. Kapitel 1 ist eine Einführung, in der die Forschungslücken und die Forschungsziele im Hinblick auf staatliche PES beschrieben werden. Kapitel 2 liefert die theoretische Grundlage der institutionellen Ökonomie und zeigt die Bedeutung der Governance von Naturressourcen in China auf. Darauf aufbauend konkretisiert Kapitel 3 das Forschungsdesign, indem es die Forschungsziele in verschiedene Forschungsfragen untergliedert. Kapitel 4 beinhaltet den Ergebnisteil, der fünf Zeitschriftenartikel umfasst. Der erste Artikel liefert die konzeptionelle Grundlage für alle nachfolgenden Untersuchungen, die in dieser Dissertation vorgestellt werden, und gibt einen Überblick über die Wirksamkeit und die institutionellen Herausforderungen des chinesischen SLCP. Sowohl der zweite als auch der dritte Artikel sind empirische Untersuchungen. Der zweite Artikel untersucht, wie die sozioökonomischen und institutionellen Bedingungen Anreize für Haushalte in ländlichen Gebieten schaffen, um die primären Umweltziele des SLCP zu erreichen. Der dritte Artikel zeigt, wie lokale Dynamiken die Umsetzung des SLCP beeinflusst und geprägt haben. Der vierte Artikel veranschaulicht und diskutiert die im zweiten Artikel angewandte Methode im Vergleich zu einer weiteren Fallstudie in Deutschland. Der fünfte Artikel schließlich stellt die Stärken und Schwächen der im dritten Artikel angewandten Methode den Erfahrungen ähnlicher Studien in vier weiteren Ländern gegenüber. Zusammen liefern diese Artikel wichtige Beiträge für die beiden Ziele der Dissertation. Kapitel 5 beinhaltet die Synthese und Diskussion der Ergebnisse und Kapitel 6 schließt die Dissertation ab. Das wichtigste Ergebnis dieser Dissertation ist, dass die Wirksamkeit des staatlichen PES in China das Ergebnis der Interaktion der treibenden sozialen Kräfte ist, während institutionelle Rahmenbedingungen und lokale Dynamiken eine Schlüsselrolle bei der Ausgestaltung der Programmumsetzung spielen. Das SLCP hätte unter bestimmten institutionellen Bedingungen ein großes Potenzial für die Schaffung signifikanter Skaleneffekte und für die Verbesserung der Umwelteffektivität. Allerdings weicht die derzeitige Umsetzung des SLCP wegen der besonderen institutionellen Rahmenbedingungen erheblich von dem von der Politik geförderten Marktansatz ab. Zwar haben die institutionellen Rahmenbedingungen die breite Akzeptanz und schnelle Entwicklung des SLCP in der Anfangsphase nicht behindert, doch gibt es keine Möglichkeit, einen langfristigen Erfolg im Hinblick auf die Umwelteffektivität zu erreichen, wenn die wichtigsten PES-Elemente fehlen. Der überwiegend von oben nach unten gerichtete Ansatz des Programms und das Fehlen von echter Freiwilligkeit, Konditionalität und Eigentumsrechten werden zusammen als kritische Faktoren verstanden, die mögliche Misserfolge langfristig erklären. Ein weiterer Beitrag der Dissertation sind die methodischen Ansätze, die zum besseren Verständnis der Governance von Ökosystemleistungen beitragen. Diese Dissertation zeigt, dass Ansätze, die qualitative und quantitative Methoden kombinieren, wie z.B. Qualitative Vergleichende Analyse (Qualitative Comparative Analysis „QCA“) und Soziale Netzwerkanalyse (SNA), ein großes Potenzial für die institutionelle Analyse und partizipative Forschung von PES haben. Bei beiden Methoden wurde besonderes Augenmerk auf die detaillierte Beschreibung ihrer Anwendung sowie die damit verbundenen Vor- und Nachteile gelegt. / My dissertation focuses on institutional aspects of governmental payments for ecosystem services (PES) in China. Market-based approaches for ecosystem service governance, particular the PES, have been considered new and innovative policy instruments over the past decades. Corresponding to this international trend, PES schemes in China are mostly described by the domestic term eco-compensation. However, the characteristics of eco-compensation are distinct from other national PES programs, as governance model, property rights and societal structures in China are different to the PES theory. Eco-compensation faces many institutional challenges in creating economic incentives for behavioral change. However, PES that combines elements of both a voluntary market and hierarchy-based system in dealing with incomplete institutional settings has not yet been sufficiently addressed. In particular, there is a knowledge gap regarding fitting the design of PES and institutional settings in China together. The mechanisms of PES in China differ in important ways from mechanisms familiar from the western experience. This dissertation aims to reduce the divergence between the common framing of PES and the reality of its practice by presenting the institutional analysis of China’s governmental PES program. As a major component of eco-compensation, the Sloping Land Conversion Program (SLCP) is considered one of the world’s largest PES programmes. By taking SLCP as an empirical case, the first objective of this dissertation is to understand how to improve the institutional design of governmental PES. The second lies in a broad international context, aiming at methodologically contributing to the analysis of ecosystem services governance. This dissertation follows a cumulative structure, integrating the framework text and five papers. Chapter 1 is an introduction, outlining the research gaps and objectives of governmental PES. Chapter 2 provides a theoretical foundation to the institutional economic schools, their respective theories and the relevance of nature resource governance in China. Based on this, Chapter 3 confirms the research design by deconstructing the research objectives into different research questions. Chapter 4 is the results section, which comprises five papers. The first paper provides the conceptual basis for all subsequent studies presented in this dissertation, as it is an overview of the effectiveness and institutional challenges of China’s Sloping Land Conversion Program (SLCP). Both the second and third papers are empirical works. The second paper explores how socioeconomic and institutional conditions encourage rural households to reach the primary environmental goals of SLCP. The third paper shows how local dynamics derived and shaped the SLCP’s implementation. The fourth paper illustrates and discusses the method used in paper 2, comparing it with another case study in Germany. Finally, the fifth paper present the strengths and weaknesses of the method used in paper 3 based on the experiences of four different countries. Together, these papers deliver important contributions to both objectives. Chapter 5 is the synthesis and discussion, and Chapter 6 concludes the dissertation. The key finding of this dissertation is that the effectiveness of governmental PES is a result of interacting driving forces, whereas institutional settings and local dynamics play key roles in shaping program implementation. The SLCP could achieve its potential in creating significant economies of scale and environmental effectiveness under certain institutional conditions. However, against incomplete institutional settings, the current implementation of SLCP has deviated substantially from the market approach promoted by policy makers. While the incomplete institutional settings did not prevent SLCP’s wide acceptance and fast development in its first phases, there is no by-pass to reach the long term success in terms of environmental effectiveness in the absence of key PES elements. The program’s predominantly top-down approach and lack of genuinely voluntary characteristics, conditionality and property rights are jointly understood to be critical factors that explain possible failures in the long-term. Another contribution which this dissertation makes is in methodological approaches of ecosystem service governance. This dissertation has shown that mixed approaches combining qualitative and quantitative methods, such as Qualitative Comparative Analysis (QCA) and social network analysis (SNA), could have great potential for institutional analysis and participatory research for PES. The two methods were given particular emphasis in the detailed description of application, as well as in the inherent merits and limitations.

In dieser Dissertation wird der Einfluss von Transaktionen zur Wiederverwendung von Nährstoffen und gereinigtem kommunalen Abwasser auf die Wertschöpfungsketten der Abwasserbehandlung und Pflanzenproduktion untersucht. Ziel ist es, Kosten und Nutzen sowie die Wertschöpfung von Transaktionen in verknüpften Wertschöpfungsketten der Abwasserbehandlung und Pflanzenproduktion zu analysieren. Darüber hinaus wird untersucht, wie Transaktionen und Interdependenzen zwischen Akteuren in verknüpften Wertschöpfungsketten die lokalen Governance-Strukturen für die Wiederverwendung von Abwasser beeinflussen. Die Analyse wird hauptsächlich durch das Wertschöpfungskettenkonzept, das Konzept der Kreislaufwirtschaft und die Theorie der Transaktionskostenökonomie geleitet. Mit verschiedenen Methoden, wie der Kosten-Nutzen-Analyse, der Wertschöpfungskettenanalyse und der Transaktionskostenanalyse, werden zwei Fallstudien in Deutschland untersucht: (1) die Fällung von Struvit (Magnesium-Ammonium-Phosphat) und dessen Verwendung als Dünger in Berlin-Brandenburg und (2) das Modell der landwirtschaftlichen Abwasserwiederverwendung in Braunschweig. Die Ergebnisse zeigen, dass die Wiederverwendung von Nährstoffen und Abwasser zu geringeren Kosten für die Abwasserbehandlung, höherer Rentabilität und Wertschöpfung in der Pflanzenproduktion und zu einem hohen Anteil an regionaler Wertschöpfung führen. Die Ergebnisse verdeutlichen aber auch, dass die Wiederverwendung von Abwasser zu Einschränkungen, Verdrängungseffekten und Veränderungen in der Verteilung der Wertschöpfung führen kann. Des Weiteren zeigen die Ergebnisse, dass differenzierte Governance-Strukturen erforderlich sind, um den unterschiedlichen Eigenschaften der Transaktionen zwischen Abwasserbehandlung und der Pflanzenproduktion gerecht zu werden. Interdependenzen zwischen Abwasseranbietern und Landwirten erhöhen den Bedarf an hybriden und hierarchischen Elementen in den Governance-Strukuren für die Wiederverwendung von Abwasser. / This dissertation explores the impact of transactions for reusing nutrients and treated municipal wastewater on the value chains of wastewater treatment and crop production. It aims to analyze what costs and benefits and what added-value can result from transactions in linked value chains of wastewater treatment and crop production. Furthermore, it aims to analyze how transactions and interdependences between actors in linked value chains shape the governance structures for reusing wastewater at the local level. The analysis is mainly guided by the value chain concept, the concept of the circular economy and the theory of transaction costs economics. Different methods including cost-benefit analysis, value chain analysis and transaction cost analysis are used to investigate two case studies located in Germany: (1) the precipitation of struvite (magnesium ammonium phosphate) in the wastewater treatment plant in Waßmannsdorf and its application as fertilizer in Berlin-Brandenburg, and (2) the agricultural wastewater reuse scheme of the Wastewater Association Braunschweig. The results show that transactions for reusing nutrients and wastewater result in the development of linked regional value chains with lower costs of wastewater treatment, higher profitability and added-value in crop production, and a high share of regional added-value. However, the results also highlight that the reuse of wastewater can lead to restrictions (e.g., cultivation bans on certain crops), crowding out effects and changes in the distribution of the added-value. Furthermore, the findings suggest that different governance structures are needed to match the different properties of the transactions between wastewater treatment and crop production. Interdependences resulting from transactions between wastewater providers and farmers increase the need for hybrid and hierarchical elements in the governance structures for reusing wastewater.