Search Results

Now showing 1 - 10 of 71
  • Journal Article
    Explaining Success and Failure in the Commons: The Configural Nature of Ostrom's Institutional Design Principles
    (2016) Baggio, Jacopo Alessandro; Barnett, Allain T.; Pèrez-Ibarra, Irene; Brady, Ute; Ratajczyk, Elicia; Rollins, Nathan; Rubiños, Cathy; Shin, Hoon C.; Yu, David J.; Aggarwal, Rimjhim; Anderies, John M.; Janssen, Marco A.
    "Governing common pool resources (CPR) in the face of disturbances such as globalization and climate change is challenging. The outcome of any CPR governance regime is the influenced by local combinations of social, institutional, and biophysical factors, as well as cross-scale interdependencies. In this study, we take a step towards understanding multiple-causation of CPR outcomes by analyzing 1) the co-occurrence of Destign Principles (DP) by activity (irrigation, fishery and forestry), and 2) the combination(s) of DPs leading to social and ecological success. We analyzed 69 cases pertaining to three different activities: irrigation, fishery, and forestry. We find that the importance of the design principles is dependent upon the natural and hard human made infrastructure (i.e. canals, equipment, vessels etc.). For example, clearly defined social bounduaries are important when the natural infrastructure is highly mobile (i.e. tuna fish), while monitoring is more important when the natural infrastructure is more static (i.e. forests or water contained within an irrigation system). However, we also find that congruence between local conditions and rules and proportionality between investment and extraction are key for CPR success independent from the natural and human hard made infrastructure. We further provide new visualization techniques for co-occurrence patterns and add to qualitative comparative analysis by introducing a reliability metric to deal with a large meta-analysis dataset on secondary data where information is missing or uncertain."
  • Conference Paper
    Resource Intruders and Robustness of Social-Ecological Systems: An Irrigation System of Southeast Spain. A Case Study
    (2010) Pérez, Irene; Janssen, Marco A.; Giménez, A.; Tenza, A.; Pedreño, A.; Giménez, M.
    "Globalization increases traditional social-ecological systems’ (SES) vulnerability to the incursion of new resource appropriators, i.e., intruders. New external disturbances that increase the physical and socio-political accessibility of SES (e.g., construction of a new road) and weak points in institutional SES of valuable common-pool resources are some of the main factors that enhance the encroachment of intruders. The irrigation system of the northwest Murcia Region (Spain) is an example used in this article of the changes in the structure and robustness of a traditional SES as a result of intruders. Farmers have traditionally used water from springs to irrigate their lands but, in recent decades, large companies have settled in this region and use groundwater to irrigate new lands. This intrusion had led the levels of this resource to drop sharply. In an attempt to adapt, local communities are intensifying the use of resources and are constructing new physical infrastructures; consequently, new vulnerabilities are emerging. This situation is inevitably heading towards the collapse of this traditional SES. From an institutional viewpoint, some recommendations are offered to enhance the robustness of SES in order to mitigate the consequences of intruders."
  • Journal Article
    An Iterative Approach to Case Study Analysis: Insights from Qualitative Analysis of Quantitative Inconsistencies
    (2016) Barnett, Allain T.; Baggio, Jacopo Alessandro; Shin, Hoon C.; Yu, David J.; Pèrez-Ibarra, Irene; Rubiños, Cathy; Brady, Ute; Ratajczyk, Elicia; Rollins, Nathan; Aggarwal, Rimjhim; Anderies, John M.; Janssen, Marco A.
    "Large-N comparative studies have helped common pool resource scholars gain general insights into the factors that influence collective action and governance outcomes. However, these studies are often limited by missing data, and suffer from the methodological limitation that important information is lost when we reduce textual information to quantitative data. This study was motivated by nine case studies that appeared to be inconsistent with the expectation that the presence of Ostrom’s Design Principles increases the likelihood of successful common pool resource governance. These cases highlight the limitations of coding and analysing Large-N case studies. We examine two issues: 1) the challenge of missing data and 2) potential approaches that rely on context (which is often lost in the coding process) to address inconsistencies between empirical observations theoretical predictions. For the latter, we conduct a post-hoc qualitative analysis of a large-N comparative study to explore 2 types of inconsistencies: 1) cases where evidence for nearly all design principles was found, but available evidence led to the assessment that the CPR system was unsuccessful and 2) cases where the CPR system was deemed successful despite finding limited or no evidence for design principles. We describe inherent challenges to large-N comparative analysis to coding complex and dynamically changing common pool resource systems for the presence or absence of design principles and the determination of 'success'. Finally, we illustrate how, in some cases, our qualitative analysis revealed that the identity of absent design principles explained inconsistencies hence de-facto reconciling such apparent inconsistencies with theoretical predictions. This analysis demonstrates the value of combining quantitative and qualitative analysis, and using mixed-methods approaches iteratively to build comprehensive methodological and theoretical approaches to understanding common pool resource governance in a dynamically changing context."
  • Working Paper
    Diffusion Dynamics in Small-World Networks with Heterogeneous Consumers
    (2005) Delre, Sebastiano A.; Jager, Wander; Janssen, Marco A.
    "Diffusions of new products and technologies through social networks can be formalized as spreading of infectious diseases. However, while epidemiological models describe infection in terms of transmissibility and susceptibility, we propose a diffusion model that explicitly includes consumer decision-making affected by social influences and word-of-mouth processes. In our computational model consumers' probability of adoption depends on the external marketing effort and on the internal influence that each consumer perceives in his/her personal social networks. Maintaining a given marketing effort and assuming its effect on the probability of adoption as linear, we can study how the speed of the diffusion depends on the network structure and on consumer heterogeneity. First, we show that the speed of diffusion changes with the degree of randomness in the network. The speed is low in regular networks, it increases in small-world networks and finally it becomes low again in random networks. Second, we show that heterogeneity helps the diffusion. Alteris paribus and varying the degree of heterogeneity in the population of agents results show that the more heterogeneous the population, the faster the speed of the diffusion. These results contribute to marketing strategies for the launch and the dissemination of new products and technologies."
  • Journal Article
    Social Roles and Performance of Social-Ecological Systems: Evidence from Behavioral Lab Experiments
    (2015) Pérez, Irene; Yu, David J.; Anderies, John M.; Janssen, Marco A.
    "Social roles are thought to play an important role in determining the capacity for collective action in a community regarding the use of shared resources. Here we report on the results of a study using a behavioral experimental approach regarding the relationship between social roles and the performance of social-ecological systems. The computer-based irrigation experiment that was the basis of this study mimics the decisions faced by farmers in small-scale irrigation systems. In each of 20 rounds, which are analogous to growing seasons, participants face a two-stage commons dilemma. First they must decide how much to invest in the public infrastructure, e.g., canals and water diversion structures. Second, they must decide how much to extract from the water made available by that public infrastructure. Each round begins with a 60-second communication period before the players make their investment and extraction decisions. By analyzing the chat messages exchanged among participants during the communication stage of the experiment, we coded up to three roles per participant using the scheme of seven roles known to be important in the literature: leader, knowledge generator, connector, follower, moralist, enforcer, and observer. Our study supports the importance of certain social roles (e.g., connector) previously highlighted by several case study analyses. However, using qualitative comparative analysis we found that none of the individual roles was sufficient for groups to succeed, i.e., to reach a certain level of group production. Instead, we found that a combination of at least five roles was necessary for success. In addition, in the context of upstream-downstream asymmetry, we observed a pattern in which social roles assumed by participants tended to differ by their positions. Although our work generated some interesting insights, further research is needed to determine how robust our findings are to different action situations, such as biophysical context, social network, and resource uncertainty."
  • Journal Article
    Robustness of Social-Ecological Systems to Spatial and Temporal Variability
    (2007) Janssen, Marco A.; Anderies, John M.; Ostrom, Elinor
    "Some social-ecological systems (SESs) have persisted for hundreds of years, remaining in particular configurations that have withstood a variety of natural and social disturbances. Many of these long-lived SESs have adapted their institutions to the particular pattern of variability they have experienced over time as well as to the broader economic, political, and social system in which they are located. Such adaptations alter resource use patterns in time and/or space to maintain the configuration of the SESs. Even well-adapted SESs, however, can become vulnerable to new types of disturbances. Through the analysis of a series of case studies, we begin to characterize different types of adaptations to particular types of variability and explore vulnerabilities that may emerge as a result of this adaptive process. Understanding such vulnerabilities may be critical if our interest is to contribute to the future adaptations of SESs as the more rapid processes of globalization unfold."
  • Journal Article
    Modelling Malaria as a Complex Adaptive System
    (1997) Janssen, Marco A.; Martens, W.J.M.
    "As the resistance of the malaria parasite to antimalarial drugs continues to increase, as does that of the malarial mosquito to insecticides, the efficacy of efforts to control malaria in many tropical countries is diminishing. This trend, together with the projected consequences of climate change, may prove to exacerbate substantially the significance of malaria in the coming decades. "In this article we introduce the use of an evolutionary modeling approach to simulate the adaptation of mosquitoes and parasites to the available pesticides and drugs. By coupling genetic algorithms with a dynamic malaria-epidemiological model, we derive a complex adaptive system capable of simulating adapting and evolving processes within both the mosquito and the parasite populations. "This approach is used to analyze malaria management strategies appropriate to regions of higher and lower degrees of endemicity. The results suggest that adequate use of insecticides and drugs may reduce the occurrence of malaria in regions of low endemicity, although increased efforts would be necessary in the event of a climate change. However, our model indicates that in regions of high endemicity the use of insecticides and drugs may lead to an increase in incidence due to enhanced resistance development. Projected climate change, on the other hand, may lead to a limited reduction of the occurrence of malaria due to the presence of a higher percentage of immune persons in the older age class."
  • Working Paper
    Playing Games to Save Water: Collective Action Games for Groundwater Management in India
    (2017) Meinzen-Dick, Ruth; Janssen, Marco A.; Kandikuppa, Sandeep; Chaturved, Rahul; Rao, Kaushalendra R.; Theis, Sophie
    "Groundwater is one of the most challenging common pool resources to govern, resulting in resource depletion in many areas. We present an innovative use of collective action games to not only measure propensity for collective action, but to improve local understanding of groundwater interrelationships and stimulate collective governance of groundwater, based on a pilot study with NGOs in Andhra Pradesh, India. The games simulate crop choice and consequences for the aquifer. These were followed by a community debriefing, which provided an entry point for discussing the interconnectedness of groundwater use, to affect mental models about groundwater. A slightly modified game was played in the same communities, one year later. Communication within the game increased the likelihood of groups reaching sustainable extraction levels in the second year, but not the first. Individual payments to participants based on how they played in the game had no effect on crop choice. Either repeated experience with the games or the revised structure of the game evoked more cooperation in the second year, outweighing other factors such as education, gender, and trust index scores. After the games were played, a significantly higher proportion of communities have adopted water registers and rules to govern groundwater, compared to other communities in the same NGO water commons program. Because groundwater levels are affected by many factors, games alone will not end groundwater depletion, but can contribute to understanding of the role of crop choice and collective action, to motivate behavior change toward more sustainable groundwater extraction."
  • Journal Article
    Population Aggregation in Ancient Arid Environments
    (2010) Janssen, Marco A.
    "Human societies have adapted to spatial and temporal variability, such as that found in the prehistoric American Southwest. A question remains as to what the implications are of different social adaptations to long-term vulnerability of small-scale human societies. A stylized agent-based model is presented that captures small-group decision making on movements and resource use in ancient arid environments. The impact of various assumptions concerning storage, exchange, sharing, and migration on indicators of aggregation and sustainability are explored. Climate variability is found to increase the resilience of population levels at the system level. Variability reduces the time a population stays in one location and can degrade the soils. In addition to climate variability, the long-term population dynamics is mainly driven by the level of storage and the decision rules governing when to migrate and with whom to exchange."
  • Journal Article
    A Multilevel Evolutionary Framework for Sustainability Analysis
    (2015) Waring, Timothy M.; Kline, Michelle Ann; Brooks, Jeremy S.; Goff, Sandra H.; Gowdy, John; Janssen, Marco A.; Smaldino, Paul E.; Jacquet, Jennifer
    "Sustainability theory can help achieve desirable social-ecological states by generalizing lessons across contexts and improving the design of sustainability interventions. To accomplish these goals, we argue that theory in sustainability science must (1) explain the emergence and persistence of social-ecological states, (2) account for endogenous cultural change, (3) incorporate cooperation dynamics, and (4) address the complexities of multilevel social-ecological interactions. We suggest that cultural evolutionary theory broadly, and cultural multilevel selection in particular, can improve on these fronts. We outline a multilevel evolutionary framework for describing social-ecological change and detail how multilevel cooperative dynamics can determine outcomes in environmental dilemmas. We show how this framework complements existing sustainability frameworks with a description of the emergence and persistence of sustainable institutions and behavior, a means to generalize causal patterns across social-ecological contexts, and a heuristic for designing and evaluating effective sustainability interventions. We support these assertions with case examples from developed and developing countries in which we track cooperative change at multiple levels of social organization as they impact social-ecological outcomes. Finally, we make suggestions for further theoretical development, empirical testing, and application."