The history of the Church of Jesus Christ of Latter-day Saints in South America between 1945 and 1960 shows growth in numbers of members and strength of those members. The church grew more than 1000 percent during those fifteen years and almost half of all South American branches came under the direction of local, native leadership. The three new missions organized were evidence of the growth being made. Church building was stepped up and Church literature in Spanish and Portuguese became plentiful.Some problems encountered were opposition of the prevailing church, misunderstandings with government, and the inefficiency of transportation and services. Visits of General Authorities inspired members and missionaries and gave direction to the work, and new and inovative proselyting techniques were employed, such as sports and music programs, which helped the work flourish. Lamanite areas in South America that were opened were found to be among the most receptive to the gospel message.

Many tropical aquatic environments worldwide are characterized by intermittent or prolonged hypoxia (low dissolved oxygen). Nevertheless, many tropical freshwater fishes are able to inhabit these challenging environments via a range of morphological, physiological and behavioral adaptations. Brachyhypopomus is a diverse genus of weakly electric fishes represented by 28 known species distributed from Panama to Argentina. 17 species are restricted to permanently normoxic habitats (blackwater rivers and terra firme streams), eight species are restricted to seasonally or perennially hypoxic habitats (whitewater floodplains of large tropical rivers or permanent swampy habitats), and three species are eurytopic (occur in both seasonally hypoxic and normoxic habitats). These habitat distributions offer the opportunity to explore both species- and population-level variation in adaptive responses to hypoxia. Across 25 of the 28 known species in the genus (for which specimens were available), one- and two-way ANOVA was used to correlate total gill filament length (a metric of gill surface area) with lifestyle-divided into four categories: 1) stenotopic species (i.e. species occurring in a narrow range of habitats) restricted to hypoxic habitats; 2) stenotopic species restricted to normoxic habitats; 3) populations of eurytopic species from hypoxic habitats, and; 4) populations of eurytopic species from normoxic habitats. One-way ANOVA revealed that populations of eurytopic species from hypoxic habitats had significantly larger total gill filament lengths than stenotopic species from the same habitat (P = 0.0169). Likewise, populations of eurytopic from normoxic habitats had significantly larger total gill filament lengths than stenotopic species from normoxic habitats (P[less than] 0.005). Two-way ANOVA showed that eurytopic species had significantly larger total gill filament lengths than stenotopic species, independent of the disparity in total gill filament length associated with either hypoxic or normoxic habitats. Results indicate a strong correlation between gill surface area and oxygen-habitat among species and populations, which supports the hypothesis that an enlarged gill surface area increases oxygen uptake and serves as an adaptive response to seasonal hypoxia.

As generic and higher-scale evolutionary relationships are increasingly well understood, systematists move research in two directions: 1) understanding specieslevel relationships with dense taxon sampling, and 2) evaluating evolutionary patterns using phylogeny. In this study I address both foci of systematic research using pitvipers, subfamily Crotalinae. For direction one, I evaluate the relationships of 96% of pitvipers by combining independent sets of molecular and phenotypic data. I find the inclusion of species with low numbers of informative characters (i.e. less than 100) negatively impacts resolution of the phylogeny, and the addition of independent datasets has no effect on or a small benefit to confidence in estimated evolutionary relationships. Combined evidence is extremely useful in evaluating taxonomy; I use it with South American bothropoid pitvipers. Previous work found the genus Bothrops paraphyletic, but no study had included enough species to propose a taxonomic resolution. I resolve the relationships of 90% of bothropoid pitvipers, and support the paraphyly of Bothrops as previously defined, but find it consists of three well-supported clades distinguished by distinct habitats and geographic ranges. I propose the division of Bothrops sensu lato into three genera. To address research direction two, I investigate the change in reproductive mode from egg-laying (oviparity) to livebearing (viviparity) in vipers, as well as the expansion of pitvipers through South America. I resolve the phylogeny and the divergence times for subgroups of interest then use model comparison and ancestral character state or iv geographic range estimation to trace the evolution of reproductive mode or geographic range across evolutionary history. For vertebrates, the predominant explanation for the evolution of reproductive mode is Dollo’s Law of unidirectional evolution. This law has been challenged for a number of characters in different systems, but the phylogenetic methods that found those violations were criticized. I find support for unidirectional evolution in two analyses and rejection of it in others, and therefore do not reject Dollo’s Law for the evolution of reproductive mode in vipers. In the case of geographic range, dozens of hypotheses have been proposed to explain the great biodiversity in South America, but tests of these hypotheses are lacking. I define specific time- and space-based predictions for seven hypotheses based on geological and climatic events – uplift of the Andes Mountains, saltwater inundation of inland areas, change in river flow, and Pleistocene climate changes. I find some support for half of the hypotheses, including one allopatric, one parapatric, and one based on climate change. I conclude that the evolution of South American pitvipers is extremely complex. Through fulfillment of both systematic research directions, I generated new knowledge about pitvipers and evolutionary processes. My methods of evaluating evolutionary patterns provide frameworks for different research questions in these areas, and I suggest that other researchers apply similar techniques to evaluate other portions of the Tree of Life

This dissertation examines the political negotlations involved in border encounters, focusing particularly on mobile groups in border areas in South America. It discusses the connection between international and border politics, privileging a definition of the latter as the negotiation processes over the terms and modes of presence of the 'inter' of the international. The dissertation analyzes border politics from the perspective of three major tenets: displacement, practices of zoning and the construction of borders as sites of solidarity. I argue that in order to understand these processes we need to elucidate how the global politics of mobility is played out (or translated) in border crossroads and from a range of social groups that encompass not only the Nation-State, but also a myriad of actors that, despite having little or no say in the international framework of human mobility, perform bordering practices that are central to the enactment of difference as a primary trait of inclusion/exclusion from the political. These processes of political differentiation are reinforced but also contested by mobile groups, especially in relation to discourses that try to equate human mobility as a choice between freedom and protection. In important respects, their intervention attempts to problematize the dichotomous portrayal of freedom and protection as two irreconcilable dimensions of life in displacement, thus evincing the possibility that the 'inter' of the international can actually become a site of living, rather than a rite of passage. I also argue that by incorporating the narratives of diverse social actors at these border crossroads we might come closer to displacing the politics of human mobility from one premised on a conventional reading of the international, as a strategy of separation, modulation and management of difference, towards a global politics of (dis)connections, in which mobile groups can become active participants in the framing of their lives possibilities. This moving-away from the international is always embedded in tenuous, dangerous and ambiguous exchanges about what constitutes mobility, how movement is to be interpreted, stimulated or prevented, where and when it can take place and under what conditions. The dissertation discusses these more theoretical claims in the context of refugee and migration movements in Brazil, particularly in relation to Bolivians, Africans and Colombians living in border zones. As such, this dissertation hopes to contribute to a better understanding of what is at stake in dealing with the border encounter from a political perspective and how different narratives on life in displacement can, in fact, indicate different paths of action and research, especially in the context of South-South circulations. / Thesis / Doctor of Philosophy (PhD)

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No description available.

No description available.

Ecotourism and protected area visitation have been steadily increasing in recent years in Central and South America, inevitably resulting in natural resource impacts. The consequences of such impacts may include natural resource degradation, diminished aesthetic qualities, or decreased functionality of certain facilities like recreation sites and trails. Recreation ecology and visitor impact management expertise and tools are available to help balance the potentially conflicting management goals of protecting natural resources and permitting visitation but such knowledge has not been widely used in Central and South America. The goals of this research were to characterize certain visitor-related natural resource impacts and to determine how these impacts could be assessed and managed in Central and South America. The research included case studies of eight protected areas in Costa Rica and Belize, trail impact assessment research at Torres del Paine National Park in Chile, and development of a new visitor impact assessment and management framework, presented as three papers intended for journal submission. The first paper had two objectives: 1) to identify visitor-related natural resource impacts at selected protected areas in Costa Rica and Belize to increase awareness about visitor impact problems, and 2) to apply and compare rapid trail and recreation site impact assessment procedures to provide study site managers with impact data and impact assessment procedures. A variety of natural resource impacts were reported by interview subjects and recorded by rapid assessment procedures. The management utility of the rapid trail and recreation site impact assessment procedures were compared and discussed and the need for developing additional rapid assessment procedures to evaluate other resource impacts reported by protected area managers was also identified. The intent of the second paper was to investigate trail impacts at Torres del Paine National Park. Study objectives included measuring the frequency and magnitude of selected trail impacts, and comparing the relative impact contribution of the amount of use, vegetation type, trail position and trail grade on common condition indicators such as width and incision. Findings somewhat contradicted those of other studies, revealing that amount of use significantly contributed to trail width and incision. However, findings also indicated that vegetation type and trail grade contributed to number of informal trails and trail incision, respectively. A variety of management strategies were recommended and suggestions were provided for future monitoring studies. The purpose of the third paper was to propose a new visitor impact assessment and management framework that would provide managers with a feasible means of addressing visitor impact management concerns for selected protected areas in Central and South America. The Protected Areas Impact Assessment and Management (PAIAM) framework was adapted from existing frameworks like carrying capacity and the Limits of Acceptable Change to provide a simple, cost-effective and relatively quick decision making process. PAIAM analyzes visitor impacts using an expert panel and incorporates stakeholders and local residents into decision making. This study experimentally applied the new framework in Mexico and compared PAIAM to existing frameworks. The focus of this dissertation is on Central and South America since they are heavily visited ecotourist regions that could potentially benefit from applying recreation ecology and visitor impact expertise and tools to protected area management. This research demonstrated that a variety of visitor impacts are affecting natural resources and visitor facilities like trails and recreation sites at selected protected areas in Central and South America. This research also developed and applied rapid impact assessment procedures and visitor impact frameworks for use in Central and South American protected areas. / Ph. D.

Christian Spirituality, Church History and Missiology / D. Th. (Missiology)

Thesis (MA)--Stellenbosch University, 2001. / ENGLISH ABSTRACT: This study explores inter-regional relations between SADC and Mercosur. The central problem posed at the outset is "Why should relations between SADC and Mercosur be pursued?" In this problem there exists two separate questions, each one dealing with the regions at hand. The first question asks whether Mercosur is a viable partner in the global political economy and if so, "What possible options are made available through a partnership with Mercosur in the future?" The second question focuses on the Southern African region and addresses concerns surrounding SADC as Mercosur's option for a partner in Africa. These problems are analysed in the context of the global political economy from the perspective of regionalisation, considering the increased interest and attention this phenomenon is currently receiving in international relations. This study therefore addresses both bilateral and multilateral implications associated with SADC-Mercosur relations, with the importance of market liberalisation as well as the effects of regional integration on the process of globalisation kept in mind. A descriptive and analytical approach is employed throughout the study. This methodology provides a concise description of both regions. It also allows the study and research to take place on different levels of analysis, looking at the problem from a country-to-country, country-to-region and region-to-region perspective. These levels are extended to include bilateral and multilateral opportunities for the parties involved. In applying this descriptive methodology various characteristics and attributes of each region are looked at, identifying benefits a regional bloc like Mercosur holds in terms of market size and level of regional development. Various other areas are studied, which explores possible future opportunities for both SA DC and Mercosur through improved south-south co-operation. Statistical data is used to further illustrate certain arguments raised and findings made. The study clearly reveals a broad number of benefits available through enhanced SADCMercosur relations. Mercosur holds an immense amount of future potential that would be of great importance in maintaining a sustainable position for developing economies in the future. There are however a number of difficulties too. These emanate primarily from SADC and therefore cast a great deal of doubt on SADC's ability to enter into a partnership with Mercosur. Considering the current situation, a more viable option would be SACU. But this option should be pursued with the intention of bringing the rest of SADC on board in the not too distant future. SADC's shear size and status in Southern Africa is a drawing card in developing south-south co-operation. It would be ideal to develop relations between SADC and Mercosur in a truly inter-regional fashion and possibly even a transatlantic FTA further down the line. This is a vision that should always be on the agenda when pursuing relations with Mercosur. / AFRIKAANSE OPSOMMING: Hierdie studie ondersoek die inter-streeksverhouding tussen SADC en Mercosur. Vanuit die staanspoor word die vraag, "Waarom behoort verhouding tussen SADC en Mercosur nagestreefte word?" gevra. Die studie spreek binne hierdie verband met twee sub-vrae. Die eerste vraag vra of Mercosur 'n lewensvatbare vennoot in the globale politieke ekonornie is en indien weI, "Watter opsies word vir die toekoms gegenereer deur 'n vennootskap met Mercosur." Die tweede vraag fokus op Suidelike Afrika en spreek kwessies rakende SADC as Mercosur se keuse vir 'n vennoot in Afrika aan. Binne die konteks van die globale politieke ekonomie word bogenoemde probleme vanuit 'n streeksperspektief geanaliseer, gegewe die toenemende aandag wat die regionalisasie verskynsel tans in internasionale betrekkinge geniet. Hierdie studie spreek gevolglik beide die bilaterale en multilaterale implikasies van SADC-Mercosur verhoudinge aan, terwyl die belangrikheid van markliberalisering asook die gevolg van streeksintegrasie vir die globaliseringsproses in gedagte gehou word. Die studie volg deurgaans 'n beskrywende en analitiese benadering. Daardeur word navorsing op verskiIIende vlakke van analise moontlik gemaak deur die probleem vanuit 'n land-tot-land, land-tot-streek en streek-tot-streek perspektiefte beskou. Deur die fokus op hierdie vlakke word die bilaterale en multilaterale geleenthede vir die betrokke partye geidentifiseer. Deur middel van 'n beskrywende metodologie word die eienskappe en potensiaal van beide streke uitgelig, veral met betrekking tot markgrootte en streeksontwikkeling. Teen die agtergrond van verbeterde suid-suid samewerking word ander areas ook bestudeer, met die oog op moontlike toekomstige geleenthede vir SADC en Mercosur. Statistiese data word deurgaans gebruik om sekere argumente en bevindings toe te lig. Die studie bevind dat uitgebreide SADC-Mercosur verhoudinge etlike voordele inhou. Mercosur hou groot belofte in vir ontwikkelende ekonorniee. Daar is egter ook probleme binne SADC en plaas dit 'n vraagteken oor SADC se vermoe om 'n vennootskap met Mercosur aan te gaan. 'n Meer realistiese opsie sal 'n vennootskap met SACU wees. Maar hierdie opsie behoort nagestreef te word met die oog op die spoedige insluiting van SADC. Die blote grootte en status van SADC is 'n belangrike faktor in die uitbreiding van suid-suid samewerking. Dit sou ideaal wees om verhoudinge tussen SADC en Mercosur tot op 'n ware interstreekse vlak te ontwikkel met die moontlikheid van 'n toekomstige transatlantiese vrye handelsooreenkoms. Hierdie visie behoort altyd in gedagte gehou te word in die nastreef van verhoudinge met Mercosur.