Master of Arts / Department of Political Science / Emizet N. Kisangani / This study is an effort to shed some light on the causes of civil war. The literature on civil war onset has been framed under three main perspectives: cultural, political and economic approaches. Recent studies, however, tend to narrow the debate and posit explanations for civil war as either greed-motivated or grievance-motivated. This study replicates one of the most prominent econometric models on civil war, the Collier and Hoeffler model (CH), and further validated their economic interpretation of civil war as greed-motivated. Their argument is that greed-led behavior is motivated by an abundance of valuable resources. However, Collier and Hoeffler overlooked one critical element: scarce resources also contribute to discontent and violent protests. This study suggests that the CH model should include resource scarcity to avoid omitting variable bias.

Previous research has not specified the puzzling occurrence of the low prevalence of natural resource management (NRM) in intrastate peace- and ceasefire agreements. The purpose of this thesis is to address this gap by applying the theoretical perspectives on high natural resource abundance. High natural resource abundance produces conditions for poor economic management, which may serve as a possible explanation of the low prevalence of NRM. The result of the study indicates a negative correlation between high natural resource abundance and an inclusion of NRM in intrastate peace- and ceasefire agreements. Thus, the hypothesis “If a high level of natural resource abundance exits, there is a lower probability of an inclusion of NRM in intrastate peace- and ceasefire agreements” is upheld. Since the assumptions of the theories do appear to hold, the thesis offers findings that further our understanding of the low prevalence of NRM in intrastate peace- and ceasefire agreements.

<p>Numerous studies have confirmed a statistically significant negative relationship between natural resource abundance and economic growth. This has been labeled “The Resource Curse”. In this paper we try to explain why Botswana, a country heavily dependent on its diamond industry, has managed to generate sustainable growth. Economists have advanced several explanations for the negative impact of natural resources on long-term growth. This paper focuses on the following important problems: First, a boom in a natural resource can pull resources away from other sectors of the economy, thus harming their international competitiveness, a phenomenon called the Dutch disease. Second, abundance in natural resources may lead to poor institutional quality in many countries. Thanks to conservative fiscal policies and accumulation of foreign reserves the local currency did not appreciate during the boom, and Botswana avoided the most severe symptoms of the Dutch disease. Historical tradition of democratic procedures and sound institutions at the time of diamond discovery has contributed to a high institutional quality in Botswana.</p>

Numerous studies have confirmed a statistically significant negative relationship between natural resource abundance and economic growth. This has been labeled “The Resource Curse”. In this paper we try to explain why Botswana, a country heavily dependent on its diamond industry, has managed to generate sustainable growth. Economists have advanced several explanations for the negative impact of natural resources on long-term growth. This paper focuses on the following important problems: First, a boom in a natural resource can pull resources away from other sectors of the economy, thus harming their international competitiveness, a phenomenon called the Dutch disease. Second, abundance in natural resources may lead to poor institutional quality in many countries. Thanks to conservative fiscal policies and accumulation of foreign reserves the local currency did not appreciate during the boom, and Botswana avoided the most severe symptoms of the Dutch disease. Historical tradition of democratic procedures and sound institutions at the time of diamond discovery has contributed to a high institutional quality in Botswana.

Coral reefs are one of the world’s most diverse yet heavily impacted marine ecosystems. As a result of many direct and indirect stressors, coral reefs have experienced major degradation over the last several decades. Declines in coral reefs in the Caribbean have been particularly acute and generally associated with the loss of key herbivores and an increase in algae. Herbivorous fishes such as parrotfishes can positively impact coral reefs by removing algae that compete with corals for light and space. However, many parrotfishes are also important coral predators. Predation on corals, known as corallivory, can adversely affect coral growth, reproduction and survivorship. In this time of changing environments and coral reef decline, understanding the context-dependent nature of parrotfish foraging behavior is of critical importance to scientists and managers. Knowledge of the responses of parrotfishes across a range of resource abundance will help scientists and managers better predict the impacts that these herbivores have on benthic communities as both herbivores and corallivores. In Chapter 1, we examined how six different species of coral reef herbivores (i.e. parrotfishes), all of which belong to a single feeding guild but represent a range of dietary specialization, respond to changes in the abundance of preferred food items. We conducted behavioral observations of parrotfishes in two regions of the Greater Caribbean, and compared consumption rates, diet preferences, and foraging territory size in relation to natural variation across sites in preferred resource abundance. We found that the more-specialized parrotfishes increased their dietary specialization, had smaller foraging territories, and increased their feeding rate with increased preferred resource abundance. In contrast, less-specialized species exhibited constant foraging traits regardless of the abundance of their preferred resources. This study suggests that differences in dietary preference, specialization, and subsequent nutritional demand may drive a differential response in foraging behavior by generalists and specialist herbivores to changes in resource abundance. Recognizing that generalists and specialists differ in the degree to which their foraging behaviors are context-dependent can allow researchers to better predict how herbivores shape the structure and function of marine and terrestrial ecosystems. In Chapter 2, we determined if and how corallivory rates and intensity by parrotfishes differ between two regions of the Greater Caribbean that vary in coral and parrotfish community composition and abundance. We found that more species of parrotfishes than previous studies suggest contribute to corallivory. However, corallivory rates and selectivity for coral species by parrotfishes were largely context-dependent, particularly with regards to the relative abundance of preferred corals and diversity of corallivores at a given site. Although we found that corallivory rates decrease with coral cover, it appears that areas of low coral cover may have high corallivory intensity and coral tissue loss, in part due to the relatively high abundance of corallivores in these areas. The impact of high corallivory intensity and tissue loss requires further knowledge regarding the fate of bite scars on corals.This information will help predict the positive and negative consequences of parrotfishes on coral persistence in the Caribbean. Evidence provided in this thesis furthers our understanding of the dual role of parrotfishes as herbivores and corallivores. Additionally, it reveals the implications of changing coral reef habitats on parrotfish behavior and subsequent coral reef health and resilience.

The migratory birds stop at different stopover sites during migration. The presence of resources in these stopover sites is essential to regain the energy of these birds. This thesis aims to compare the resource abundance and intake at the two stopover sites: Reda and Wisla river estuaries. How a bird's mass changes during its stay at an estuary is considered as a proxy for the resource abundance of a site. The comparison is made on different subsets, including those which has incomplete data, i.e. next day is not exactly one day after the previous capture. Multiple linear regression, Generalized additive model and Linear mixed effect model are used for analysis. Expectation maximization and an iterative predictive process are implemented to deal with incomplete data. We found that Reda has higher resource abundance and intake as compared to that of Wisla river estuary.