Recent shifts towards ecosystem based fisheries management (EBFM) around the world have necessitated consideration of effects of fishing on a larger range of species than previously. Non-selective multispecies fisheries are particularly problematic for EBFM, as they can contribute to erosion of ecosystem structure. The trade-off between catch of productive commercial species and abundance of low-productivity species is unavoidable in most multispecies fisheries. A first step in evaluation of this trade-off is estimation of productivity of different species but this is often hampered by poor data. This thesis develops techniques for estimating productivity for data-limited species and aims to help clarify EBFM policy objectives for the fisheries of New South Wales (NSW), Australia. It begins with development of an age-structured model parameterised in terms of optimal harvest rate, UMSY. UMSY is a measure of productivity, comparable among species and easily communicated to managers. It also represents a valid threshold for prevention of overfishing. The model is used to derive UMSY for 54 Atlantic fish stocks for which recruitment parameters had previously been estimated. In most cases, UMSY was strongly limited by the age at which fish were first caught. However, for some species, UMSY was more strongly constrained by life history attributes. The model was then applied to twelve species of Australian deepwater dogshark (Order Squaliformes), known to have been severely depleted by fishing. Results showed that the range of possible values of UMSY for these species is very low indeed. These findings enabled a preliminary stock assessment for three dogsharks (Centrophorus spp.) currently being considered for threatened species listing. Preliminary results suggest they have been overfished and that overfishing continues. Finally, an Ecopath with Ecosim ecosystem model, representing the 1976 NSW continental slope, is used to illustrate trade-offs in implementation of fishing policies under alternative policy objectives. Results are compared with those of a biogeochemical ecosystem model (Atlantis) of the same system, built by scientists from CSIRO. While there were large differences in model predictions for individual species, they gave similar results when ranking alternative fishing policies, suggesting that ecosystem models may be useful for exploring broad-scale strategic management options.

Early land survey records can be used to reconstruct the historical distribution and abundance of tree species prior to the large-scale impact of industrialized societies. Comparing these records to current vegetation patterns enables an examination of the shifts that have occurred in plant communities since the arrival of European settlers in North America. I used presettlement (1859-1874) land survey records from southeastern Vancouver Island and Saltspring Island, British Columbia, Canada to reconstruct the relative abundance and density of tree species in these areas. I then collected equivalent vegetation data from the same points in the modern landscape, which enabled me to compare the two points in time and identify the changes in large-scale vegetation patterns that have occurred since European settlement. My results show a significant increase in the relative abundance of maple (Acer macrophyllum) and cedar (Thuja plicata), and a corresponding decrease in Douglas-fir (Pseudotsuga menzeisii). Furthermore, there has been a considerable increase in tree density in undeveloped areas. The 1859 records indicate that at least one third of the land surveyed was made up of prairies or open “plains,” while a combination of open woods and forests made up the remaining two thirds. Based on comparable density measures from 2007, prairies and plains now represent less than 5% of the undeveloped landscape, while forests comprise nearly 90%. These changes are likely due to a combination of factors that have been influenced by European settlement, most notably logging and fire suppression. The suppression of fire has led to an infilling of trees into previously open areas and has led to the rapid decline of the open prairie and savanna habitat types once common in this area. The results of this study can inform conservation efforts throughout the study area, particularly those involving the restoration of prairie or savanna habitats.

Even with such a diverse set of actors, this paper will argue that it is irrational not to have a functioning mobile banking ecosystem that can provide a full range of financial services to the poor. As seen by current public and private actors that lead the charge in creating mobile banking ecosystems, all actors can substantially benefit. With three billion unbanked poor, both traditional banks and microfinance banks will have significant opportunities to massively increase clientele in previously un-bankable and remote areas in a profitable way. Telecoms will be able to provide a wider array of services to attract and retain customers as traditional markets become more saturated and competitive as well as receive positive PR for providing services to the poor. On the public side, governments should see this as an opportunity to provide financial access to their citizens without having to provide the services themselves. Finally, previously unbanked clients stand to gain the most as they will receive access to convenient, reliable and flexible services that fit their needs in ways that were impossible before mobile banking technology. This paper, however, will not prescribe a single model for mobile banking. Differences in political systems, economy, geography, demographics, state of development, nature of financial systems, profile of clients, and regulatory environment make it impossible to create a "one size fits all" solution. The correct model for a functioning mobile banking ecosystem depends on the specific market environment of each individual country. Lessons can be learned from top emerging players in developing countries for a better overall understanding of the interests of the actors and how to create a framework that allows for these interests to co-exist. This understanding is critical if mobile banking is to eventually have an important global impact on financial inclusion for the poor.

Environmental monitoring initiatives are typically conceived as strictly scientific affairs designed to provide support for managerial decision-making; as a consequence most initiatives are centered on a formal mandate or an overarching mission statement that provides direction for monitoring activity. But official frameworks tend to marginalize lay perspectives as experts pursue disciplinary rigor at the expense of public input, a situation not in keeping with the spirit of the biosphere reserve concept. This thesis argues that an alternative design approach that reaches beyond scientists and resource managers is necessary. Environmental monitoring under an ecosystem approach is subject to scientific, social, and bureaucratic demands that defy easy disentanglement. A medley of factors influence how data are collected, interpreted, and used; neglect of these 'soft' dimensions runs the risk of failing to win the enduring support of stakeholders. There is a need to coordinate activity and to partially align multiple perspectives-this is the 'soft underbelly' of integrated monitoring that gets short shrift in most designs. While there is much monitoring being done in and around the Long Point World Biosphere Reserve, there is little coordination among monitoring groups and no obvious way to combine disparate data sets in a meaningful way. This thesis describes the elements of a locally-sensible framework for monitoring practice that is mainly concerned with trying to make sense of confusing and ambiguous situations; it strives to integrate the 'why', 'what', and 'how' of monitoring in as transparent a manner as possible by crafting 'boundary objects' that help to congeal understanding and provide centers of coordination. Using principles of participatory design in the soft-systems tradition, the overall intent is to primarily support sense-making, not decision-making; to generate searching questions, not final solutions; to facilitate learning, not control.

Trends in environmental and resource management point to a more collaborative, integrated and regional approach, discussed in terms of concepts such as ecosystem management and collaborative planning. Such an approach has the potential to address some of the shortfalls previously encountered in environmental management and nature conservation, and has been the focus of considerable discussion in the literature. While a number of efforts are underway, there remains a need to identify how a regional approach can best be undertaken in practice. This research assessed the Yellowstone to Yukon Conservation Initiative (Y2Y), a recent regional conservation initiative in western North America, which has been the focus of considerable attention in the conservation community. This research assessed the strengths and limitations of the Yellowstone to Yukon Conservation Initiative in terms of its contribution to regional conservation planning, aiming to gain an understanding of implications for similar regional conservation efforts. Literature relating to regional conservation was examined to derive principles for effective regional conservation planning, as a basis for comparison with Y2Y. Drawing from needs of ecosystem management, collaborative planning, and related concepts, criteria were developed to assess the formative stages of a regional approach, emphasising capacity building measures and preconditions for success. In order to assess the strengths and limitations of Y2Y at a regional scale, this research attempted to obtain an understanding of how the Y2Y initiative was perceived by multiple stakeholders in regional conservation, as a basis for interpreting multi-stakeholder involvement and buy-in. A series of semi-structured interviews were conducted with a diverse range of individuals involved (directly and indirectly) in conservation planning, in two communities in the Y2Y region, Canmore and Crowsnest Pass, Alberta. These communities were selected to provide a degree of representation of areas within the Alberta portion of the Y2Y region. Perceptions of successes and obstacles of the initiative were compared with the criteria for effective regional conservation planning. Findings pointed to three recurring themes that influenced the initiative's ability to meet the criteria. These were the need to address both ecological and social components of conservation, the need to include diverse participants, and the need to operate at regional and local scales. These themes are consistent with limitations of traditional conservation and management practices critiqued in the literature, and suggest some substantial obstacles for employing a truly collaborative regional approach to conservation. Reflecting on the findings revealed that the Y2Y initiative was primarily understood as a vision. The Y2Y vision is one that has garnered a great deal of support and momentum, although there is a need to progress beyond the vision to address its potential and apply the ideals it puts forward. Recommendations of this study for Y2Y and similar initiatives included the need to build partnerships with more diverse groups, and the need for the Y2Y vision to be promoted in terms of some tangible, more specific goals. This study identified a need for biophysical, social science, and stakeholder information needs to be assessed and prioritised at the start of an initiative. Additionally, a vision was recognised as an effective rallying point from which to develop a regional conservation planning initiative.

This research investigates the application of an adaptive ecosystem approach to the problem of the Cooum River and environs in Chennai (formerly Madras), India. The Cooum River is an extremely polluted urban stream that flows into the Bay of Bengal through the heart of Chennai, India's fourth largest metropolis. During the dry (non-monsoon) season, the upper reaches of the river are dry and flow in the river may be attributed primarily to the production of sewage by the city's population. The river is essentially a foul-smelling open sewer. Complexity of the problem is due as much to human factors (population growth, poverty, uncontrolled urban development, jurisdictional conflicts, modes of behaviour of the citizenry, and institutional culture) as to physical characteristics of the system (flat topography, tidal action, blockage of the river mouth by sand bar formation, and monsoon flooding). Uncertainty in the situation is both structural (regarding main processes and activities in the system and the nature of relationships among the various actors and elements), and parametric (having to do with scarcity, poor quality and restricted access to data). This work has drawn upon methods and techniques of Adaptive Environmental Management and Soft Systems Methodology to operate the ecosystem approach and address the problem. Specifically, this has involved a series of workshops which have brought together planners, researchers, NGOs, and other stakeholders in a participatory process oriented toward problem definition, system identification and conceptualization, determination of objectives for management, and the generation and exploration of management interventions. In addition, a central component of the program has been the development of a loosely-coupled GIS, environmental simulation model, and a decision support module. This is based upon a framework provided by participants in the first workshop in the series, and operationalizes a common understanding of the system. In addition to generating new insight into the nature of the problem situation, the research has provided a potentially useful tool to planners, managers and researchers in Chennai in the form of a GIS database and decision support system (DSS). Aside from the tool itself, it was found that the process of developing a conceptual model, and attempting to represent this in the DSS has made a significant contribution to understanding of the Cooum system. In particular, this process forced assumptions to be stated explicitly and publically, highlighted areas of uncertainty and led to new understanding in participants' conception of the problem situation. The program of research also provided a much needed forum for open debate and exchange of information which was removed from the restrictive institutional culture of government departments.

Hydroelectric reservoirs account for 59% of the installed electricity generating capacity in Canada and 26% in Ontario. Reservoirs also provide irrigation capacity, drinking water, and recreational opportunities. Further, they continue to be built in northern Canada, neighbouring boreal countries, and around the world. Yet given their socio-economic importance, they are understudied with respect to greenhouse gas emissions, nutrient and mercury cycling, and aquatic metabolism. As one of many electricity generating options, hydroelectricity is viewed as well-tested because of its long history and diverse applications in mega-projects, run-of-the-river dams, and small, local applications. It is also considered renewable from a fuel stand-point because an adequate long-term supply of water is assumed. One of several significant criticisms of hydroelectric development is that reservoirs may be a significant source of greenhouse gases to the atmosphere relative to the amount of electricity produced due to flooding the landscape. As a result of the dearth of information on reservoir development and both greenhouse gases and aquatic metabolism, a pair of whole-ecosystem reservoir experiments were conducted staring in 1991. Three upland boreal forest reservoirs with differing amounts of pre-flood stored organic carbon were built in northwestern Ontario and flooded for five years. The rates of net greenhouse gas production in these reservoirs were determined by calculating mass budgets for carbon dioxide and methane. Additionally, rates of biological processes were determined by combining the mass budgets with measurements of the stable isotopes of carbon and oxygen. Assembling mass and isotope-mass budgets required three related projects on gas exchange, methane oxidation, and oxygen isotopes. To estimate the gas exchange coefficient for each of the upland reservoirs, a comparative-methods study was undertaken. Methane oxidation enrichment factors were determined in upland and wetland boreal reservoirs so that the importance of methane oxidation in these ecosystems could be assessed. In order to interpret the diel changes in both oxygen concentrations and their isotopic ratios, a dynamic model was developed. This model, PoRGy, was successfully applied to the upland boreal reservoirs as well as prairie rivers and ponds. Further, PoRGy was used to understand the interplay between the key parameters that control oxygen concentrations, to compare aquatic ecosystems, to make quantitative estimates of ecosystem metabolism, and to assess the vulnerability of aquatic ecosystems under various environmental stressors. Carbon isotope-mass budgets were used to conclude that community respiration rates declined quickly in the upland reservoirs and had declined by half over five years. This suggested that the most labile organic carbon is quickly consumed but decomposition continued for the five-year life of the project. Net primary production rates were similar for three years, with a small peak in the second or third year, before declining by half by the fifth year. Together, these results indicated that aquatic metabolism slowed over five years while the reservoirs remained a source of greenhouse gases to the atmosphere each year. Net methane production was greatest in the third year of flooding then decreasing by about half by the fifth year. Methane ebullition also peaked in the third year and declined by two-thirds by the fifth year. Together, these results indicated that methanogenesis was greatest in the third year of flooding. The flux of methane to the atmosphere grew in importance relative to that of carbon dioxide over the five years of the experiment. Community respiration and primary production could not be estimated directly from the oxygen isotope-mass budgets since the oxygen respiration enrichment factor remains poorly constrained. Instead, three estimates were made, each based on a different assumption. In general, these estimates suggested that rates of community respiration and primary production decreased slightly for three years and most rapidly in the final two years. The oxygen isotope-mass budgets provided a new method for assessing and constraining community metabolism and greenhouse gas fluxes to the atmosphere. One of the major hypotheses of the whole-ecosystem reservoir experiments was that pre-flood organic carbon stores less tree boles were positively related to greenhouse gas fluxes. Within the three upland boreal forest reservoirs, this hypothesis did not hold true. Over five years, community respiration in the three reservoirs was within 5% of each other. When methane is included, to assess total greenhouse gas fluxes to the atmosphere, the reservoirs were within 1% of each other. Organic carbon stores were therefore poor short-term predictors of carbon lability and greenhouse gas fluxes. This research presented two methods for determining biological rates at the whole-ecosystem scale: one using carbon isotopes and one using oxygen isotopes. Temporal evolution of greenhouse gas cycling within the upland reservoirs was different than in the wetland reservoir and should inform how reservoir development is done vis-à-vis the amount of flooded land of each type versus electricity production. Medium-term estimates of greenhouse gas fluxes suggest that upland reservoirs do not have adequate pre-flood organic carbon stores to sustain elevated levels of decomposition the way wetlands do. The strong evidence of continued production of dissolved organic carbon in the upland reservoirs should concern operators of municipal drinking water reservoirs since elevated dissolved organic carbon can make disinfection difficult.

Environmental monitoring initiatives are typically conceived as strictly scientific affairs designed to provide support for managerial decision-making; as a consequence most initiatives are centered on a formal mandate or an overarching mission statement that provides direction for monitoring activity. But official frameworks tend to marginalize lay perspectives as experts pursue disciplinary rigor at the expense of public input, a situation not in keeping with the spirit of the biosphere reserve concept. This thesis argues that an alternative design approach that reaches beyond scientists and resource managers is necessary. Environmental monitoring under an ecosystem approach is subject to scientific, social, and bureaucratic demands that defy easy disentanglement. A medley of factors influence how data are collected, interpreted, and used; neglect of these 'soft' dimensions runs the risk of failing to win the enduring support of stakeholders. There is a need to coordinate activity and to partially align multiple perspectives-this is the 'soft underbelly' of integrated monitoring that gets short shrift in most designs. While there is much monitoring being done in and around the Long Point World Biosphere Reserve, there is little coordination among monitoring groups and no obvious way to combine disparate data sets in a meaningful way. This thesis describes the elements of a locally-sensible framework for monitoring practice that is mainly concerned with trying to make sense of confusing and ambiguous situations; it strives to integrate the 'why', 'what', and 'how' of monitoring in as transparent a manner as possible by crafting 'boundary objects' that help to congeal understanding and provide centers of coordination. Using principles of participatory design in the soft-systems tradition, the overall intent is to primarily support sense-making, not decision-making; to generate searching questions, not final solutions; to facilitate learning, not control.

Trends in environmental and resource management point to a more collaborative, integrated and regional approach, discussed in terms of concepts such as ecosystem management and collaborative planning. Such an approach has the potential to address some of the shortfalls previously encountered in environmental management and nature conservation, and has been the focus of considerable discussion in the literature. While a number of efforts are underway, there remains a need to identify how a regional approach can best be undertaken in practice. This research assessed the Yellowstone to Yukon Conservation Initiative (Y2Y), a recent regional conservation initiative in western North America, which has been the focus of considerable attention in the conservation community. This research assessed the strengths and limitations of the Yellowstone to Yukon Conservation Initiative in terms of its contribution to regional conservation planning, aiming to gain an understanding of implications for similar regional conservation efforts. Literature relating to regional conservation was examined to derive principles for effective regional conservation planning, as a basis for comparison with Y2Y. Drawing from needs of ecosystem management, collaborative planning, and related concepts, criteria were developed to assess the formative stages of a regional approach, emphasising capacity building measures and preconditions for success. In order to assess the strengths and limitations of Y2Y at a regional scale, this research attempted to obtain an understanding of how the Y2Y initiative was perceived by multiple stakeholders in regional conservation, as a basis for interpreting multi-stakeholder involvement and buy-in. A series of semi-structured interviews were conducted with a diverse range of individuals involved (directly and indirectly) in conservation planning, in two communities in the Y2Y region, Canmore and Crowsnest Pass, Alberta. These communities were selected to provide a degree of representation of areas within the Alberta portion of the Y2Y region. Perceptions of successes and obstacles of the initiative were compared with the criteria for effective regional conservation planning. Findings pointed to three recurring themes that influenced the initiative's ability to meet the criteria. These were the need to address both ecological and social components of conservation, the need to include diverse participants, and the need to operate at regional and local scales. These themes are consistent with limitations of traditional conservation and management practices critiqued in the literature, and suggest some substantial obstacles for employing a truly collaborative regional approach to conservation. Reflecting on the findings revealed that the Y2Y initiative was primarily understood as a vision. The Y2Y vision is one that has garnered a great deal of support and momentum, although there is a need to progress beyond the vision to address its potential and apply the ideals it puts forward. Recommendations of this study for Y2Y and similar initiatives included the need to build partnerships with more diverse groups, and the need for the Y2Y vision to be promoted in terms of some tangible, more specific goals. This study identified a need for biophysical, social science, and stakeholder information needs to be assessed and prioritised at the start of an initiative. Additionally, a vision was recognised as an effective rallying point from which to develop a regional conservation planning initiative.

This research investigates the application of an adaptive ecosystem approach to the problem of the Cooum River and environs in Chennai (formerly Madras), India. The Cooum River is an extremely polluted urban stream that flows into the Bay of Bengal through the heart of Chennai, India's fourth largest metropolis. During the dry (non-monsoon) season, the upper reaches of the river are dry and flow in the river may be attributed primarily to the production of sewage by the city's population. The river is essentially a foul-smelling open sewer. Complexity of the problem is due as much to human factors (population growth, poverty, uncontrolled urban development, jurisdictional conflicts, modes of behaviour of the citizenry, and institutional culture) as to physical characteristics of the system (flat topography, tidal action, blockage of the river mouth by sand bar formation, and monsoon flooding). Uncertainty in the situation is both structural (regarding main processes and activities in the system and the nature of relationships among the various actors and elements), and parametric (having to do with scarcity, poor quality and restricted access to data). This work has drawn upon methods and techniques of Adaptive Environmental Management and Soft Systems Methodology to operate the ecosystem approach and address the problem. Specifically, this has involved a series of workshops which have brought together planners, researchers, NGOs, and other stakeholders in a participatory process oriented toward problem definition, system identification and conceptualization, determination of objectives for management, and the generation and exploration of management interventions. In addition, a central component of the program has been the development of a loosely-coupled GIS, environmental simulation model, and a decision support module. This is based upon a framework provided by participants in the first workshop in the series, and operationalizes a common understanding of the system. In addition to generating new insight into the nature of the problem situation, the research has provided a potentially useful tool to planners, managers and researchers in Chennai in the form of a GIS database and decision support system (DSS). Aside from the tool itself, it was found that the process of developing a conceptual model, and attempting to represent this in the DSS has made a significant contribution to understanding of the Cooum system. In particular, this process forced assumptions to be stated explicitly and publically, highlighted areas of uncertainty and led to new understanding in participants' conception of the problem situation. The program of research also provided a much needed forum for open debate and exchange of information which was removed from the restrictive institutional culture of government departments.