|Year||Title (Author, Description)||File Download|
Scenario Analysis to Identify Viable Conservation Strategies in Paraguay’s Imperiled Atlantic Forest
Carlson, M. J., R. Mitchell, and L. Rodriguez
A common challenge facing land use planning is assessment of the future performance of land use options. The challenge can be acute in developing regions where land use is expanding rapidly and funding and data needed for planning are scarce. To inform land use planning for a biosphere reserve located in Paraguay’s Atlantic forest region, a scenario analysis explored the relative merits of conventional and conservation agricultural practices, sustained yield forestry, and protection. Simulations compared the long-term impacts on land cover, biotic carbon, and income of the area’s residents. Ecological and economic decline were projected under conventional practices. Protection and forestry scenarios achieved only small relative improvements to ecological indicators at the cost of reduced economic performance. By addressing the underlying issue of land degradation, conservation agriculture including no-tillage was the most successful land use strategy both ecologically and economically. Identification of conservation agriculture as the most promising land use strategy prioritizes issues that must be addressed to achieve sustainability, most importantly the provision of education and funding to smallholder farmers. We conclude that scenario analysis offers a flexible strategy to integrate available data for the purpose of informing land use planning in data-limited regions such as Paraguay’s Atlantic forest.
|Contact ALCES for Carlson, M. J., R. Mitchell, and L. Rodriguez, 2011|
Lorne Fitch, P. Biol.
It was a sight to behold and one greater to comprehend the eating of, that chocolate cream pie. We had whipped it together from graham cracker crumbs and chocolate pudding, shaken and then chilled in a snow bank on a backpacking trip. The anticipation of eating it brought me to the level of a child, thinking only of immediate gratification. My two companions showed considerably more restraint, electing to divide each of their respective thirds in half, to have a piece at breakfast the next morning. I ate my third immediately. The saved piece of pie was enclosed in a rock cairn to protect it from marauders. I was teased unmercifully about how good the remainder would taste in the morning, had I saved some of my pie. The early glow of morning light revealed the cairn had been transformed into a scatter of rocks. No pie remains were left and the aluminum pie plate retained gouges on its surface. A mule deer doe was beating a hasty retreat from the scene saving me from instant suspicion. But, a closer inspection of the crime scene with all the intensity of a CSI unit showed a porcupine was the culprit. Somewhere in the headwaters of the Castle River there may well be a line of porcupines still hardwired to remember a meal of non-wood, chocolate ambrosia tinged with a slight metallic aftertaste. It was my turn to laugh, since I had lost nothing in this porcupine perpetrated crime. The moral of the story, I pontificated, was that “gluttony is its own reward”. Saving a piece of the pie was foolish, because how could we predict the events of the future, and indeed the tragic loss of the saved pie? Eating it all, now, was the smart thing to do. It was only later, upon reflection that I realized how much the incident revealed of human nature and our province, if not the world.
|Contact ALCES for Lorne Fitch, P. Biol., 2012|
Modeling Cumulative Effects in Barren-ground Caribou Range: Proceedings of a Workshop in Yellowknife
Jan Adamczewski, John Nishi, Anne Gunn, Terry Antoniuk, Chris Johnson, Don Russell, Ted Blondin, All
In the early 2000s, most herds of barren-ground caribou in the Northwest Territories (NWT) were declining. The declines aroused considerable concern in NWT communities because caribou have been a resource of great value to people in the north for many generations. Possible explanations for the declines include a natural cycle, variation in weather and forage conditions, predation, hunting, disease, and industrial development. Of these factors, some are beyond immediate control, but effects due to direct human influence, like hunting and development, can be managed. The impact of development on caribou is usually not due to single roads, mines, cut-blocks or seismic lines, rather it is the cumulative effects of many habitat alterations over time that affect caribou numbers and distribution. Concerns over effects of development on caribou have been raised in environmental assessments and particularly by aboriginal groups for many years, but progress on assessing them has been limited. To be objective, assessment of cumulative effects must account for other factors, including hunting and natural variation in weather. Due to the need for overall knowledge of a caribou herd‟s complex ecology in assessing cumulative effects, biologists have turned to computer models to help track multiple variables and relationships, and to look at “what if” simulations. While these models cannot predict the future, they can help users understand how various factors interact and what likely consequences of particular management decisions might be. In the 2006-2010 NWT Caribou Management Strategy, a commitment was made by the Government of the Northwest Territories to developing a modeling approach that could assess development in its proper context of natural variation. In this report we summarized the presentations and participant responses at a public workshop held in February 2008, Yellowknife, NWT, on modeling cumulative effects in the range of the Bathurst herd. In addition, we report on progress towards a demonstration project initiated at the February 2008 workshop.
|Contact ALCES for Jan Adamczewski, John Nishi, Anne Gunn, Terry Antoniuk, Chris Johnson, Don Russell, Ted Blondin, All, 2008|
Synthesis of Habitat Models used in the Oil Sands Region
Judy E. Muir, M.Sc., R.P.Bio. Virgil C. Hawkes, M.Sc., R.P.Bio., Krysia N. Tuttle, M.Sc. and Tony Mo
This project assessed the current state of habitat models used in oil sands region EIA and closure planning to meet the following objectives: 1. Determine which habitat models are used in EIAs and closure planning, and how these models were used; 2. Determine what linkages exist between the habitat model predictions in the EIAs and closure plans; 3. Determine which habitat models have been validated, and of these, describe and evaluate the validation procedures that were used on each model with recommendations for improvement if needed; and 4. Recommend procedures to validate non-validated models. These four objectives were addressed through the completion of four tasks: 1. Review and summarize EIA species habitat models used in the oil sands regions for Environmental Impact Assessments (EIAs) for oil sands project applications and for other projects such as wildlife habitat mapping. 2. Review and summarize how regional wildlife habitat mapping data, EIA habitat model data, and habitat models, are used to develop oil sands closure plans conducted by SEWG or for the Lower Athabasca Regional Plan (LARP) 3. Summarize the validation methods and status of existing validated models 4. Provide recommendations for validation procedures of non-validated models
|Contact ALCES for Judy E. Muir, M.Sc., R.P.Bio. Virgil C. Hawkes, M.Sc., R.P.Bio., Krysia N. Tuttle, M.Sc. and Tony Mo, 2011|
Nighttime lights as proxy for the spatial growth of dense urbanized areas
Nighttime lights constitute a very appealing database that can be used to measure various different aspects of the human footprint on the planet. The amount of research and the number of publications around this dataset confirm this, offering a broad spectrum of applications that involve economics, energy, society and environment. I chose to use them to study the spatial extension and the relative distribution of settlements around the Earth and their evolution over time. I analyzed the DMSP-OLS ‘stable lights’ database of the NGCD consisting in a catalog of world images of the last 19 years. I discovered that the mean center of lights is moving steadily to South-East. This reflects the extreme growth experienced by the urban centers in the developing countries, especially in Asia. I further developed a version of the Gini coefficient to compare the statistical spatial dispersion of nighttime lights, unexpectedly finding that all the countries show a very similar inequality value, quickly converging to the same coefficient by raising the lower threshold of light detection. Further, I analyzed the evolution of the lit area at a country level and in the largest urban agglomerations, finding that whereas most developing countries and cities are experiencing an incredible spatial growth in illumination, some ‘historical’ conurbations present rather constant or even decreasing emissions. This could be a signal of success of the light pollution abatement programs launched in the last years.
|Contact ALCES for Nicola Pestalozzi, 2012|
The effects of Linear Developments on Wildlife: A Review of Selected Scientific Literature.
Jalkotzy, M. G., Ross, P. I., and Nasserden, M. D.
This report is a reference to be used when information is required regarding the effects of linear development on wildlife. It is divided into a number of sections. The basis of the literature review was an electronic search of biological and related electronic databases. The scope of this research is detailed in Section 2. Since the basis for understanding the effects of linear developments on wildlife is the ecology of landscapes, Sections 3 provides an introduction to the basic concepts of landscape ecology and Section 4 outlines the major functions of disturbance corridors. The effects of linear developments on wildlife can be divided into 6 major groupings, and these are outlined in Section 5. Section 6 examines the effects of linear corridors from the perspective of corridor type. Sections 5 and 6 are meant to be brief overviews of their respective topics. Section 7 forms the bulk of the report and examines, in detail, the effects of linear developments on different wildlife species and species groups. Large mammals are dealt with at the species level, whereas medium-sized carnivores are dealt with as a group, as are birds. The final section, Section 8, briefly reviews mitigative measures currently in use.
|Contact ALCES for Jalkotzy, M. G., Ross, P. I., and Nasserden, M. D., 1997|
Lake Simcoe Basin’s Natural Capital: The Value of the Watershed’s Ecosystem Services
Sara J. Wilson
This study quantifies the natural capital value of the ecosystem goods and services provided by Lake Simcoe’s watershed, a section of which is located in Ontario’s Greenbelt. At a minimum estimated worth of $975 million per year, the services provided by the watershed are worth $2,780 to each of the 350,000 permanent residents annually. This study represents the first application of this methodology to a watershed in southern Ontario. Goods and services provided by ecosystems are traditionally undervalued as they go unmeasured by conventional economics. These benefits include storage of floodwaters by wetlands, air pollution absorption, climate regulation, pollination of crops and water filtration, resulting in clean air and water and safe and abundant local food sources. In order to measure the value of these benefits, this study first describes the watershed’s natural assets – that is, the extent of the forests, wetlands, grasslands, water bodies, agricultural lands and urban or built-up areas. Then, using market-determined values (e.g. the avoided increased costs of a man-made water filtration service as a proxy for the existing capabilities of a natural system to filter water), the study was able to quantify many of the goods and services that are provided by the watershed.
|Contact ALCES for Sara J. Wilson, 2008|
Moose Alces alces behaviour related to human activity
The spatiotemporal dynamics of human activity requires a better understanding of the ecological effects on wildlife. This thesis focuses on the behavioural response of a harvested species, moose (Alces alces), to dynamic human activities e.g. hunting and recreation, and to static influences like roads, using experimental and descriptive approaches. Potentially lethal (hunting) and non-lethal (hiking, snowmobiling) activities provoked short-lived increases in moose movement activity and caused spatial displacement. The data suggests a uniform response towards unexpected disturbance and that moose are sensitive to human proximity. Hunting clearly provoked the strongest response. Moose approached by a hunting dog commonly fled, suggesting adjustments in anti-predator behaviour towards a nonnative predator. This may lead to predator facilitation where wolves and human predation co-exist, because the moose’s behavioural response towards one predator possibly increases the predation risk by the other. Unexpectedly, hiking and motordriven (snowmobiling) recreational activity caused a comparable change in moose behaviour. The short-lived response towards dynamic human activities indicates a rather minor impact on moose total energy budget from a single disturbance. Moose seldom crossed roads, but did increasingly so during migration. Roadcrossing sites were aggregated, suggesting well established travel routes and corridors for migratory moose. Moose did not cross roads more often during hunting season. In general, moose little utilized habitats in proximity to roads. Moose-vehicle collisions did not occur where and when moose most commonly cross roads. My results suggest a higher risk to human safety during times of poor visibility and close to urban areas, but not necessarily in the vicinity of forests. For wildlife subject to intensive harvest and sensitive to human proximity, I emphasize the need to include animal behavioural, landscape ecological, political as well as socio-economical aspects for future research concerning human-wildlife interactions. I also recommend future research to combine wildlife movement data from active tracking sensors such as GPS-collars together with collision data to improve conclusions about wildlife movement corridors and traffic risk zones.
|Contact ALCES for WIEBKE NEUMANN, 2009|
Quantifying barrier effects of roads and seismic lines on movements of female woodland caribou in northeastern Alberta
Simon J. Dyer, Jack P. O’Neill, Shawn M. Wasel, and Stan Boutin
Linear developments such as roads, seismic lines, and pipeline rights-of-way are common anthropogenic features in the boreal forest of Alberta. These features may act as barriers to the movement of threatened woodland caribou (Rangifer tarandus caribou). Thirty-six woodland caribou were captured and fitted with global positioning system collars. These collared caribou yielded 43 415 locations during the 12-month study period. We compared rates of crossing roads and seismic lines with rates at which caribou crossed simulated roads and seismic lines created using ArcInfo GIS. Seismic lines were not barriers to caribou movements, whereas roads with moderate vehicle traffic acted as semipermeable barriers to caribou movements. The greatest barrier effects were evident during late winter, when caribou crossed actual roads 6 times less frequently than simulated road networks. Semipermeable barrier effects may exacerbate functional habitat loss demonstrated through avoidance behaviour. This novel approach represents an important development in the burgeoning field of road ecology and has great potential for use in validating animal-movement models.
|Contact ALCES for Simon J. Dyer, Jack P. O’Neill, Shawn M. Wasel, and Stan Boutin, 2002|
Institutional requirements for watershed cumulative effects assessment and management: Lessons from a Canadian trans-boundary watershed
Poornima Sheelanere, Bram F. Noble, Robert J. Patrick
Watersheds are under increasing stress from the cumulative environmental effects of water and land use disturbances caused by both anthropogenic and natural causes. Yet, while the science of watershed cumulative effects assessment and management (CEAM) is advancing much less is known about the institutional and capacity requirements to implement and sustain watershed CEAM. Based on lessons from a transboundary watershed in western Canada this paper presents eight institutional requirements, or requisites, for the implementation of watershed-based CEAM. We suggest that effective watershed CEAM requires government leadership to move beyond the current inward focus on project approvals toward an outward focus on the cumulative effects of all disturbances in a watershed; complementary monitoring programs at the project and watershed scale, and a means to ensure the sharing of monitoring data across watershed stakeholders; and a nested planning framework to coordinate watershed planning objectives with individual project impact assessment and decision making. Results of this paper show that simply scaling up from individual project-based assessments to the watershed scale exposes many institutional constraints that can impede CEAM action.
|Contact ALCES for Poornima Sheelanere, Bram F. Noble, Robert J. Patrick, 2012|
The Anthropocene: From Global Change to Planetary Stewardship
Will Steffen, A ° sa Persson, Lisa Deutsch, Jan Zalasiewicz, Mark Williams, Katherine Richardson, Ca
Over the past century, the total material wealth of humanity has been enhanced. However, in the twentyfirst century, we face scarcity in critical resources, the degradation of ecosystem services, and the erosion of the planet’s capability to absorb our wastes. Equity issues remain stubbornly difficult to solve. This situation is novel in its speed, its global scale and its threat to the resilience of the Earth System. The advent of the Anthropence, the time interval in which human activities now rival global geophysical processes, suggests that we need to fundamentally alter our relationship with the planet we inhabit. Many approaches could be adopted, ranging from geoengineering solutions that purposefully manipulate parts of the Earth System to becoming active stewards of our own life support system. The Anthropocene is a reminder that the Holocene, during which complex human societies have developed, has been a stable, accommodating environment and is the only state of the Earth System that we know for sure can support contemporary society. The need to achieve effective planetary stewardship is urgent. As we go further into the Anthropocene, we risk driving the Earth System onto a trajectory toward more hostile states from which we cannot easily return.
|Contact ALCES for Will Steffen, A ° sa Persson, Lisa Deutsch, Jan Zalasiewicz, Mark Williams, Katherine Richardson, Ca, 2011|
Energy and the Alberta Economy: Past and Future Impacts and Implications
Robert L. Mansell, Ron Schlenker
Alberta is in many respects at a crossroads. On the one hand complacency will almost certainly mean a dimming of the province’s long-term prosperity. Declines in the conventional oil and gas sector will significantly dampen growth and prosperity. There are no other sectors of the province’s economic base that could realistically expand sufficiently to offset significant declines in the dominant energy sector. On the other hand, visionary, strategic investments today can unlock non-conventional and other energy resources critical to securing a strong and prosperous long-term, sustainable future for the province. It is in this context that ISEEE has undertaken a series of papers focused on Alberta’s energy futures. The intent is to take a longer term look at the challenges, opportunities and choices and what they mean for Alberta’s future. This first paper provides both a retrospective and a prospective overview of the impacts of the oil and gas sector. It is intended to frame and highlight the longer term issues and provide an anchor for more detailed analysis in subsequent papers.
|Contact ALCES for Robert L. Mansell, Ron Schlenker, 2006|
Application of a GIS for simulating hydrological responses in developing regions
Stefan W. Kienzle
Present capturing, processing and manipulation of spatial data and information as well as coupling processes between the ARC/INFO GIS and the ACRU HMS (Agricultural Catchment Research Unit) is demonstrated for the Mgeni basin in Natal, South Africa.
|Contact ALCES for Stefan W. Kienzle, 1993|
Leverage Points: Places to intervene in a system
Donella H. Meadows
What you are about to read is a work in progress. It's not a simple, sure-fire recipe for finding leverage points. Rather, it's an invitation to think more broadly about the many ways there might be to get systems to change.
|Contact ALCES for Donella H. Meadows, 1999|
Triage for conserving populations of threatened species: The case of woodland caribou in Alberta
Richard R. Schneider, Grant Hauer, W.L. (Vic) Adamowicz, Stan Boutin
Prioritization of conservation efforts for threatened and endangered species has tended to focus on factors measuring the risk of extirpation rather than the probability of success and cost. Approaches such as triage are advisable when three main conditions are present: insufficient capacity exists to adequately treat all patients, patients are in a critical state and cannot wait until additional capacity becomes available, and patients differ in their likely outcome and/or the amount of treatment they require. The objective of our study was to document the status of woodland caribou (Rangifer tarandus) herds in Alberta, Canada, with respect to these three conditions and to determine whether a triage approach might be warranted. To do this we modeled three types of recovery effort – protection, habitat restoration, and wolf control – and estimated the opportunity cost of recovery for each herd. We also assessed herds with respect to a suite of factors linked to long-term viability. We found that all but three herds will decline to critical levels (<10 animals) within approximately 30 years if current population trends continue. The opportunity cost of protecting all ranges by excluding new development, in terms of the net present value of petroleum and forestry resources, was estimated to be in excess of 100 billion dollars (assuming no substitution of activity outside of the ranges). A habitat restoration program applied to all ranges would cost several hundred million dollars, and a provincial-scale wolf control program would cost tens of millions of dollars. Recovery costs among herds varied by an order of magnitude. Herds also varied substantially in terms of their potential viability. These findings suggest that woodland caribou in Alberta meet the conditions whereby triage should be considered as an appropriate conservation strategy.
|Contact ALCES for Richard R. Schneider, Grant Hauer, W.L. (Vic) Adamowicz, Stan Boutin , 2010|
Soil Carbon Sequestration and Land-Use Change: Processes and Potential
W. M. Post, and K. C. Kwon
When agricultural land is no longer used for cultivation and allowed to revert to natural vegetation or replanted to perennial vegetation, soil organic carbon can accumulate by processes that essentially reverse some of the effects responsible for soil organic carbon losses from when the land was converted from perennial vegetation.We discuss the essential elements of what is known about soil organic matter dynamics that may result in enhanced soil carbon sequestration with changes in land-use and soil management.We review literature that reports changes in soil organic carbon after changes in land-use that favor carbon accumulation. This data summary provides a guide to approximate rates of SOC sequestration that are possible with management, and indicates the relative importance of some factors that influence the rates of organic carbon sequestration in soil. There is a large amount of variation in rates and the length of time that carbon may accumulate in soil that are related to the productivity of the recovering vegetation, physical and biological conditions in the soil, and the past history of soil organic carbon inputs and physical disturbance. Maximum rates of C accumulation during the early aggrading stage of perennial vegetation growth, while substantial, are usually much less than 100 g C m y . Average rates of accumulation are similar for forest or grassland establishment: 33.8 g C m y and 33.2 g C m y respectively. These observed rates of soil organic C accumulation, when combined with the small amount of land area involved, are insufficient to account for a significant fraction of the missing C in the global carbon cycle as accumulating in the soils of formerly agricultural land.
|Contact ALCES for W. M. Post, and K. C. Kwon, 1999|
Logging to Supply Timber vs. Logging to Supply Water Is there a Difference?
In all of the long-drawn-out, at times acrimonious disputes over logging in Alberta’s southern Eastern Slopes, one question has continued to baffle observers. Why has the Alberta government, despite all of the mounting opposition, been so determined to push ahead with logging these precious watersheds when the economic benefits are so minimal and the environmental costs so high? One possible answer to that question has been hinted at in recent comments from government spokesmen in the media. What if the government is indeed logging full speed to maximize resource extraction from the forest, but the primary focus is not on the production of timber, but on the production of water? If you have a tunnel-vision focus on managing forests to supply one thing – be it timber or water – then other things, including wildlife and recreation are likely to suffer. This seems to be the case in Alberta.
|Contact ALCES for Nigel Douglas, 2013|
Alberta Traffic Collision Statistics
Alberta Transportation Office of Traffic Safety
The purpose of this report is to provide an overview of the “who”, “what”, “when”, “where”, “why”, and “how” of traffic collisions which occurred in Alberta during 2010. Although the report is general in nature, it pays particular attention to casualty collisions, that is, those collisions which result in death or injury. Legislation in Alberta requires that a traffic collision, which results in either death, injury or property damage to an apparent extent of $1000.00 or more, be reported immediately to an authorized peace officer. The officer completes a standardized collision report form which provides information on various aspects of the traffic collision. This report is based on the data collected from these report forms.
|Contact ALCES for Alberta Transportation Office of Traffic Safety, 2010|
Modeling Rangeland Community Structure in ALCES Southern Alberta Sustainability Strategy (SASS)
Barry Adams and Brad Stelfox
Rangeland communities are not constant in structure (physiognomy), but change through time as they grow older, or when they are disturbed by various natural processes including fire, drought, and herbivory. Unlike forest communities, rangelands do not have to be reset to the youngest seral stage when they are affected by a natural disturbance. Instead, structural change varies depending on the intensity of the disturbance. The purpose of modeling rangeland in SASS is to simulate and compare rangeland structure under various future land use and development scenarios, and to use these results in modeling changes to wildlife habitat values. Modeling in SASS is at a regional scale and is over a 50-year time period. The study area is more or less comprised of the South Saskatchewan watershed, which is about 20% of the total area of Alberta.
|Contact ALCES for Barry Adams and Brad Stelfox, 2011|
Forecast of Common Air Contaminants in Alberta (1995 to 2020)
Cheminfo Services Inc.
The main focus of this report is on the growth in anthropogenic emissions from industrial sources in Alberta. Large natural sources are documented and included in the total emissions, but in the forecast period from 1995 to 2020, these are kept constant at 1995 levels. These sources are highly variable from year to year such that any analysis regarding how they may change due to natural causes (e.g., lightning for forest fires, precipitation, temperatures, etc.) requires further detailed research and customized modelling beyond the scope of this project. By keeping emissions from natural sources constant, it focuses the analysis of changes in CAC emissions on anthropogenic sources. The inclusion of natural sources provides perspective on the relative contribution to total CAC air emissions and can be useful for regional ambient air quality modelling using the results of this analysis.
|Contact ALCES for Cheminfo Services Inc., 2002|
New Tools for New Times
Casey Vander Ploeg
The livability and economic prowess of our large cities is of fundamental importance to western Canadaâ€™s quality of life and long-term prosperity. The fate of our large cities is a key determinant of the future of our democracy, economy, and way of life. Understanding the constellation of issues that must be addressed for our cities to reach their potential and compete with the great cities of the world is the goal of the Canada West Foundationâ€™s Western Cities Project. The project has been providing decision-makers and the public with timely and accessible information about urban issues and putting forward practical recommendations for addressing urban public policy challenges since 2000. With the generous support of the Cities of Calgary, Edmonton, Regina, Saskatoon, Vancouver, and Winnipeg, we have embarked on a new phase of the project that runs until the end of 2008. This new phase will include groundbreaking work on street level social problems, innovative options for funding urban infrastructure, the economies of western Canada's big cities, public transit, the connections between inner city areas and suburban areas, and the intergovernmental relationships that cut across these and other issues.
|Contact ALCES for Casey Vander Ploeg, 2006|
THE IMPLICATIONS OF ALTERNATIVE GROWTH PATTERNS ON INFRASTRUCTURE COSTS
EXECUTIVE SUMMARY Purpose of Report Calgary has seen record levels of growth over the last few years and population and economic growth is expected to continue in the future. Over the next 60 years the population in the city itself is expected to grow from approximately 1 million to 2.3 million persons, with another 0.5 million people in the surrounding region. This level of growth offers the opportunity, and the need, to shape the future land use and transportation patterns of Calgary. Plan It Calgary has commissioned this study to assist in development of an integrated plan for land use and transportation. It examines the infrastructure implications of two growth patterns. The Dispersed Scenario reflects current trends and the continuation of current city policies, while the new Recommended Direction intensifies jobs and population in specific areas of the city, and links them with high-quality transit services. The types of infrastructure investigated in this report are transportation (roads and transit), water and sewer services, police, fire, parks, recreation centres and schools. Key Findings • The land required for Plan It Calgary’s Recommended Direction is 25% smaller than the Dispersed Scenario (which reflects current policy and trends). • The cost to build Recommended Direction is 33% less expensive than the Dispersed Scenario. • The Recommended Direction would be less expensive to operate and maintain over the next 60 years than the Dispersed Scenario. • The cost to build, maintain and replace aging streets has the largest impact when comparing costs between the two growth patterns. Reduced greenfield growth in the Recommended Direction will result in a 36% cost savings for new streets compared to the Dispersed Scenario, and will also reduce maintenance and replacement costs. • Enhanced Primary Transit service proposed in the Recommended Direction would actually be less expensive to build than extending transit to suburban communities in the Dispersed Scenario. Increased transit ridership in Recommended Direction, which provides double the service compared to the Dispersed Scenario, means that it would cost approximately the same to operate transit in both growth patterns. • Reduced greenfield growth in Recommended Direction will result in a 55% cost savings for water and wastewater systems compared to the Dispersed Scenario. There would be no net difference in costs for the existing parts of Calgary since replacement of water and wastewater systems will be required as infrastructure ages. Significant intensification of existing areas and growth in new greenfield communities could both trigger the need to upgrade existing systems.
|Contact ALCES for IBI Group, 2009|
Edmonton to Calgary Corridor Groundwater Assessment
A.A. Barker, H. Moktan and S. Wallace
|Contact ALCES for A.A. Barker, H. Moktan and S. Wallace, 2011|