Sustainable management of natural resources requires an in-depth understanding of the interplay between social and ecological change. Linked social-ecological systems (SES) have been described as complex adaptive systems (CAS), which mean that they are irreducible, exhibit nonlinear dynamics, have interactions across scales and are uncertain and unpredictable. These propositions have however rarely been tested empirically, in part due to a lack of methodological approaches and suitable datasets. In this thesis, I address this methodological and empirical gap in a study of long-term change of Baltic Sea fisheries. In Paper I, we develop the concept of fishing style through integrating multivariate statistical analysis and in-depth interviews. We thereby identify an intermediate level of detail for analyzing social-ecological dynamics, embracing the case specific and context dependent approaches of the social sciences with the generalizable and quantifiable approaches from the natural sciences. In Paper II we ask: How has the Baltic Sea fishery been regulated over time, and can we identify a way to quantify regulations in order to be able to analyze their effects? We analyze all regulatory changes in Sweden since 1995 with a new methodology and conclude that there is a clear trend towards increased micro-management. In Paper III, we use the fishing styles developed in Paper I and examine how they have changed over time. We relate these changes to the dynamics of regulation (Paper II), as well as to the dynamics of fish stocks and prices. We conclude that regulation has been the main driving force for observed changes, but also that regulation has prompted significant specialization and decline in flexibility for fishers over time. These changes are unintended consequences and may represent a looming risk for the long-term sustainability of this social-ecological system. Paper IV zooms in on a particular fishery, the pelagic trawl fishery for sprat Sprattus sprattus and Atlantic herring Clupea harengus, mainly targeted for the production of fishmeal and fish oil. Suspicions of non-compliance in this fishery motivated us to apply a statistical approach where we used socioeconomic data to re-estimate the historical catches in this fishery (a novel approach to catch-reconstruction estimates). We found that catches had been significantly underreported over several years, with consequences for the quality of stock assessments and management. The study underlines the importance of understanding linked social, economic and ecological dynamics for sustainable outcomes. Finally, Paper V takes a longer historical look at the Baltic Sea fishery, using regionally disaggregated data from 1914-2009 (96 years), which were analyzed with a novel type of nonlinear statistical time-series methods (Empirical Dynamical Modeling). Our analysis explicitly recognized the potential nonlinear dynamics of SES and showed high predictability across regions of catches and prices of cod Gadus morhua and herring. The signal was generally nonlinear and predictability decreased strongly with time, suggesting that the dynamics of this SES are ever-changing. To our knowledge, this is the first long-term analysis of a SES using empirical data and methods developed from the CAS field of research. The main contributions of this thesis are the integrated analysis of social and ecological data, the development of novel methods for understanding SES dynamics, insights on the ever-changing nature of CAS and the quantitative analysis of management outcomes. Future work should focus on assessing the generality of these findings across a broad range of SES and evaluate alternative governance approaches given the complexity and uncertainty of SES suggested by this thesis. / <p>At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 5: Manuscript.</p>

This qualitative study was designed to explore the transition experiences of youth with learning disabilities (LD) educated in the province of Ontario and their families. The primary purpose of this research was to understand what influences the decisions adolescents who have LD make about post-secondary education and employment goals and paths. The expectations and experiences of youth with LD and their families during the transition process were investigated. Adolescents and their parents were the main informants. Facilitators and barriers to the process in terms of each of the systems described in Bronfenbrenner ecological theory and Turnbull and Turnbull’s family systems theory were also examined. A case study method was used in the design of this research and data were collected following Seidman’s three-interview process. Five families consisting of the youth with LD, at least one parent, and in four cases, a sibling participated in this study. The questions focused on family interactions, roles, and the decision-making process. Data from the 18 participants were coded and arranged according to the research questions which were linked to the central ideas in the theoretical framework. The findings revealed that parents’ expectations influenced the decision-making about post high school goals and paths by the youth and their families. In contrast to previous research, it was found that parents’ expectations were generally high for their children with LD and were shaped by their own post high school experiences. The dynamics of family relationships and roles during transition planning depended on the time of diagnosis of LD (primary grades vs. senior high school), attitudes towards LD by the parents, advocacy by parents, self-advocacy abilities of the youth with LD, and the nature of relations among siblings. Additionally, none of the youth with LD had a formal transition plan and the data showed that teachers could facilitate or hinder the transition process. Also emerging from the data were three types of advocacy that were practised by parents. The study findings add to our knowledge about the transition process and in particular how decisions are made and the factors that influence them. Moreover, this study gives a voice to youth with LD and their families as they described their transition experiences to post-secondary education or employment.

The role of citizens working with urban nature in making cities more resilient is under-explored and under-theorised. The social-ecological system (SES) is an appropriate concept to explore these interactions but challenges in applying it to cities have been identified. It has been suggested that there is a need to strengthen the 'social' in the SES. This thesis develops a conceptual framework that splits the social component of the SES into culture and agency and operationalises it through the concept of landscape. Previous scholarship has demonstrated that landscape is a powerful force in how people think about the world and that citizens are increasingly active in transforming urban landscapes. Using a critical realist framework, the SES is approached as an underlying mechanism that can only be apprehended through the landscapes that it produces. This directs attention to people’s experience of and responses to landscape. Three ‘layers’ of landscape are elucidated: the material landscape, the cultural landscape and responses to the landscape, drawing on the disciplines of landscape ecology, cultural geography and others concerned with environmental perception and people-environment interactions. The research surveyed citizen interaction with landscapes across North West England before focusing in on two key case studies in the city of Manchester. This analysis gave rise to development of a new concept, the Inviting Landscape, to describe landscapes that invite citizens to engage with them in ways that enhance the resilience of the underlying SES. The thesis identifies characteristics of Inviting Landscapes and links them to three stages of citizen engagement with landscapes. Potential practical applications of this characterisation of landscapes are discussed. Intellectually, the SES approach is enhanced through a deeper understanding of positive feedback mechanisms whereby landscapes influence citizen-nature interactions, which in turn impact on social-ecological resilience. The thesis concludes by making the case that attending more carefully to the role of culture and agency can strengthen the applicability of the SES approach to cities.

This qualitative study was designed to explore the transition experiences of youth with learning disabilities (LD) educated in the province of Ontario and their families. The primary purpose of this research was to understand what influences the decisions adolescents who have LD make about post-secondary education and employment goals and paths. The expectations and experiences of youth with LD and their families during the transition process were investigated. Adolescents and their parents were the main informants. Facilitators and barriers to the process in terms of each of the systems described in Bronfenbrenner ecological theory and Turnbull and Turnbull’s family systems theory were also examined. A case study method was used in the design of this research and data were collected following Seidman’s three-interview process. Five families consisting of the youth with LD, at least one parent, and in four cases, a sibling participated in this study. The questions focused on family interactions, roles, and the decision-making process. Data from the 18 participants were coded and arranged according to the research questions which were linked to the central ideas in the theoretical framework. The findings revealed that parents’ expectations influenced the decision-making about post high school goals and paths by the youth and their families. In contrast to previous research, it was found that parents’ expectations were generally high for their children with LD and were shaped by their own post high school experiences. The dynamics of family relationships and roles during transition planning depended on the time of diagnosis of LD (primary grades vs. senior high school), attitudes towards LD by the parents, advocacy by parents, self-advocacy abilities of the youth with LD, and the nature of relations among siblings. Additionally, none of the youth with LD had a formal transition plan and the data showed that teachers could facilitate or hinder the transition process. Also emerging from the data were three types of advocacy that were practised by parents. The study findings add to our knowledge about the transition process and in particular how decisions are made and the factors that influence them. Moreover, this study gives a voice to youth with LD and their families as they described their transition experiences to post-secondary education or employment.

Magister Artium (Social Work) - MA(SW) / Early childhood development has been recognised to be the most important contributor to long-term social and emotional development. Whatever occurs in a child‘s life in the early years may be an indicator of the child‘s developmental trajectory and life-course. Therefore positive parenting is paramount to foster quality parent-child interaction. However, previous research shows that for parents to adopt a positive parenting style, some degree of parental knowledge is required. The aim of this study was to compare the relationship between knowledge of child development and parenting styles in low and high socio-economic groups of parents in early childhood development centres. The study used a mixed methods approach with a two-phased sequential exploratory design. A systematic review was conducted in phase 1 followed by a quantitative study for phase 2. The sample consisted of N = 140 parents with children between 2-5 years old from low and high socio-economic groups. The participants completed the Knowledge of Infant Development Inventory (KIDI-P) and Parenting Styles Dimension Questionnaire (PSDQ). Descriptive statistics and Pearson correlation were used to analyze the data. Findings of the study show that the authoritative parenting style is the prevalent parenting style in both low and high socio-economic groups. Furthermore the results indicate that parents are fairly knowledgeable across all subscales for both the low and high socio-economic group with a significant difference in degree of knowledge with the high socio-economic group being more knowledgeable than the low socio-economic group. The findings also show that there in no correlation between knowledge of child development and authoritative parenting styles. However correlations do exist between the other variables.

Magister Psychologiae - MPsych / Substance use and abuse has been a persistent challenge facing many communities around the world. In more recent times there has been particular focus on the gradual, yet alarming increase in the use and/or abuse of substance use among the students who are currently enrolled in institutions of higher learning. On the strength of such findings, relevant stakeholders and policy makers have since demarcated university students as being one of the most high-risk groups within a society when it comes to substance use and abuse. While substantial research has been done on the issue of alcohol use among adolescents on both a local and global scale, very little is known about the prevalence of substance use among university students in South Africa.

Protected areas are an important tool for biodiversity conservation. Statutory protected areas are, however, perceived to currently be insufficient in extent and functioning for achieving conservation goals. Conservation action on privately owned land plays an increasingly vital role in expanding the global conservation estate. Private Land Conservation Areas (PLCAs) exist with internal properties and external contexts and do not occur isolated in space and time. They can thus best be described as linked social-ecological systems. Little comprehensive work has yet been done concerning the structure and functioning of PLCAs. However, an understanding of their emergence, long-term persistence and contribution to conservation is highly relevant. How can PLCAs maintain their identity against disturbances in order to be resilient into the future? Spatial patterns and relationships determine the answer to this question. Geographical location influences the private conservation estate through different drivers, namely biophysical conditions, network connections and membership, as well as socio-economic conditions. I thus used a comparative, spatially explicit and holistic approach to better understand spatial resilience of PLCAs in the Western Cape Province of South Africa as case study region. The approach was based on assessing representative measures for four elements of system identity (being components, relationships, sources of continuity, and sources of innovation). I expected that geographical location and spatial variation in social-ecological factors strongly influence PLCA types, socio-economic interaction networks among protected areas and other stakeholders, contribution to conservation by PLCAs and their ecotourism performance. Information and data for this research were obtained from personal interviews conducted with owners and managers of 70 PLCAs across the province. Additional data were derived via conservation authorities and online tools. My findings show that the identity and resilience of PLCAs are strongly dominated by the influence of spatial location and heterogeneity in factors such as ecological features or socioeconomic context. I was able to verify existing PLCA types, namely game and habitat reserves, which strongly depended on the biophysical context. Visitation rates were influenced by location which determined the adopted corporate model of PLCAs. Clear neighbourhood effects emerged in socioeconomic interaction networks, which further highlighted great potential to enhance collaboration across scales. PLCAs provided a substantial contribution to conservation targets in terms of importance (covering critical biodiversity areas) and urgency (protecting ecosystems of threatened status). My findings will be valuable to highlight opportunities for more effective conservation in the study region, and to advance insights into the spatial resilience of social-ecological systems.

No description available.

No description available.

Understanding the factors influencing the abundance and distribution of tropical floodplain fishes is an important component of fisheries management plans to support future sustainable resource use. This thesis uses a multi-scale approach to understand the habitat factors controlling the distribution and abundance of arapaima (Arapaima spp.) in river floodplains of the lower Amazon River, near the municipality of Santarém, Para State, Brazil. In chapter 1, a study of eight environmental variables in 13 dry season floodplain lakes demonstrates that lake depth, relative depth, conductivity, and transparency were significantly related to the probability of arapaima presence at individual locations within lakes. Further, the study revealed that smaller arapaima were more likely to be found near macrophyte coverage than in open water locations. In chapter 2, a landscape scale approach was used to examine the interactions between management systems, landscape habitat coverage, and spatial arrangement on arapaima population sizes in 73 floodplain lakes. Results showed that all three influences were important in explaining variability in arapaima abundances. Management and habitat variables contributed equally in controlling arapaima abundances. Both had strong patterns of spatial arrangement and overlapped significantly, suggesting that analysis of either management systems or landscape habitats without the other would lead to overestimations of the strength of their influence. Findings from both chapters support the notion that future sustainable use of arapaima populations requires a dualistic approach combining habitat conservation with fisheries management techniques enacted at a local scale. / Master of Science