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Reports on the determination of structure, height and diameter growth, above-and below-ground biomass and nutrient distribution of a paper birch and subalpine fir mixed species stand in the Sub-Boreal Spruce zone of British Columbia. Findings that suggest normal distribution of height and diameter in paper birch; Distribution pattern of subalpine fir; Total biomass of both plants.

Growth and survival responses of 8 year-old interior spruce to reductions in paper birch density from 2500 to 1000, 50 and 0 overtopping stems ha[sup -1] were examined after five years on a single site in the Interior Cedar Hemlock biogeoclimatic zone of southern British Columbia. Stem diameter increased and height: diameter ratio decreased when birch density was reduced from 2500 to 50 stems ha[sup -1], but there were no further benefits to spruce growth when the entire birch overstory was removed. Spruce growth did not improve where birch was thinned to 1000 stems ha[sup -1], but its potential for release may have been confounded by the higher density of taller conifers in that treatment. Interspecific competition between spruce and paper birch appeared to be primarily for light because spruce responded to dramatic reductions in overstory density but not to reductions in understory sprout density. Spruce survival was unaffected by thinning treatments, indicating that birch density of 2500 stems ha[sup -1] was too low to induce mortality. Armillaria root disease was the main cause of mortality, and spruce leader weevil and Cooley's spruce gall adelgid were important damaging agents, but the behaviour of these organisms was unaffected by treatment. Stand structure was dramatically changed from a mixed coniferous-deciduous to a predominantly coniferous overstory when birch was thinned to 50 or 0 stems ha[sup -1], which may have negative implications for wildlife. If balancing maximum spruce growth with biodiversity is the primary objective, then between 50 and 1000 stems ha[sup -1] birch should be retained on sites similar to the one used in our experiment. This will require modification of the current legislation governing reforestation in British Columbia. [ABSTRACT FROM AUTHOR]

Abstract: Canada's commercial seal hunt warrants close examination in that it is the largest kill of marine mammals on earth, it exists for commercial reasons, it targets deep diving seals with unique physical adaptations, and it is conducted in a particularly remote and uncontrolled environment amidst unstable sea ice and extreme weather conditions. For these reasons, commercial sealing in Canada has been the subject of regular veterinary scrutiny for more than five decades. In that time, despite repeated recommendations and some changes to the regulations, considerable evidence continues to be presented during each new season of poor welfare outcomes for seals. To add to the discussion we (Butterworth and Richardson) (2013) [1] reviewed multiple studies on commercial sealing, government reports, trade journal articles and recommendation reports, in an attempt to answer the question of why, despite the efforts of veterinary advisors and government to improve the situation, seals continue to die in inhumane ways. In examining the available evidence, the environment in which commercial sealing occurs, and the physical adaptations of seals, the authors concluded that generally accepted principles of humane slaughter cannot be implemented effectively and consistently in the context of commercial sealing. [Copyright &y& Elsevier]

The article presents a synopsis on comprehensive non-surgical treatment which leads to improved walking ability in people with lumbar spinal stenosis. Topics discussed include dominant symptom of people with lumbar spinal stenosis; marginal differences between treatment groups in other more traditional outcomes; and training program offered to the comprehensive training and motivated patients.

Highlights: [•] Evaluation of new HWP accounting method leads to significant GHG emission reduction for Canada. [•] Use of harvested wood for energy and of construction lead to largest GHG savings. [•] A cascade-use for wood and paper products is paramount for further GHG improvement. [•] The end-of-life effect of using recycled waste wood for energy is delayed due to longer carbon uptake. [•] Cradle-to-cradle utilization of wood waste has an underdeveloped reduction potential. [ABSTRACT FROM AUTHOR]

This paper uses a network approach to study the relationship between trade agreements and trade flows. For the first time in the literature, hypergraphs are used to capture the topology of trade agreements, while the usual graphs are used to represent trade flows. For our analysis, we focused on a snapshot of data from July 2017, before CETA as an agreement in force only in September 2017. An analysis of modularity conducted on both the trade agreements and the trade flows shows an imperfect correspondence between the communities of countries found within the two networks. Although the motivations of Brexit were multiple and, for the most part, far from commercial concerns, Brexit appears as a way to reconcile the networks of flows and agreements. On the other hand, Canada already belonged to the European cluster of trade agreements before the CETA agreement, which therefore appears only as an ex post confirmation of an existing situation. [ABSTRACT FROM AUTHOR]

Abstract: The Sydney Steel Plant emitted toxic pollutants into the local area for almost 100 years. Although no paper record exists of the amount and spatial variability of the pollutants emitted, a natural record exists locked in the annual growth of native tree species in the region. Studies have shown that temperate trees can incorporate local metal pollution into their annual rings, creating a temporal and spatial record of the pollution. Two abundant species were sampled within a 5-km radius of the steel plant site. Using dendrochronology, atomic absorption spectroscopy (AAS) and energy dispersive X-ray fluorescence (EDXRF) on white birch, Betula papyrifera, and eastern larch, Larix laricina, a new methodology was developed to determine levels of pollutants in a given year. Atomic absorption spectroscopy did not produce accurate results with the small sample sizes we were able to process, but energy dispersive X-ray fluorescence determined that the hardwood birch better incorporated both lead and zinc into annual rings than the softwood larch. The technique provides an interesting area for further study, because it provides a time efficient and repeatable method of analyzing chemicals stored in wood tissue. [ABSTRACT FROM AUTHOR]

This paper examines Indigenous perspectives on energy sustainabilities. We as Indigenous Elders and non-Indigenous scholars collectively explore how pipeline leaks that cost several Indigenous communities of the Treaty 6 region (known as western Canada). While the pipeline project has brought income to some, and wealth to the few, its impact on the environment and on the lives of many Indigenous groups is profoundly concerning. Indigenous communities are particularly vulnerable to pipeline leaks, yet have limited capacity to mitigate them as compared to larger urban centers. Using an Indigenist research framework, we used deep listening, traditional stories, reflective journals, cultural camps, and collective stories. We followed traditional protocols, continuous forms of consent, respect, and honour Indigenous Elders and Knowledge-keepers' stories. We learned about community Elders, Knowledge-keepers, and leaders' suggestions on how strategic decisions need to be made about pipeline leaks management and energy sustainabilities. The purpose of this paper is to provide Indigenous communities, particularly those communities of western Canada, with new community-led guidelines that can help them make strategic choices about pipeline leaks management to enhance their resiliency to energy. In this paper, we highlighted community suggestions on how to flip the traditional approach of fitting Indigenous ways of knowing into the Canadian legal structures by starting with Indigenous ways of knowing about the relationships of Indigenous people with land, water, and energy together with the impacts of the energy. We hope this paper may assist policy makers and Indigenous communities in sustainable energy policy development and provide a structured, transparent, and participatory decision support tool to government and communities to guide future energy management planning initiatives. • Identify community-led consultation practices for energy management. • Develop a community-led energy resiliency guideline. • Create risk evaluation framework for addressing pipeline leaks and energy management. • Explore community-led solutions anchored in sustainable energy management politics. • Support Indigenous communities' and organizations' attempts to negotiate. [ABSTRACT FROM AUTHOR]

Abstract: Hemlock looper (Lambdina fiscellaria fiscellaria (Guen.)) is an economically damaging defoliator that undergoes periodic outbreaks in Newfoundland, Canada. It defoliates and causes extensive tree mortality to its primary host, balsam fir (Abies balsamea [L.] Mill.). We quantified tree survival using data from permanent sample plots (PSPs) and growth reduction or release using dendrochronology, and related these impacts to defoliation severity determined from annual aerial defoliation survey data. Such impact relationships are necessary as a fundamental input to a Decision Support System. Growth and survival of balsam fir, black spruce (Picea mariana (Mill.) B.S.P.) and white birch (Betula papyrifera Marsh.) were assessed from 1996 to 2008 in 48 Newfoundland Forest Service PSPs, selected based on four classes of defoliation severity. Two years of severe (71–100%) defoliation resulted in almost complete mortality for balsam fir, 10 years after defoliation, whereas survival was 70–80% for black spruce and white birch. Lower defoliation severity (1–2 years of moderate (31–70%) or 1 year of severe) resulted in approximately 60% survival for balsam fir and no reduction in survival for black spruce and white birch. Maximum growth reduction of balsam fir was 10–15% with 1 year of moderate-severe defoliation, 35–40% with 2 years of moderate defoliation, and about 50% with 2 years of severe defoliation. Growth recovered to pre-defoliation rates 5 years after defoliation ceased in all severity classes. Growth reduction and recovery of black spruce were more variable and lower than for balsam fir, and white birch exhibited only minor (<10%) growth reduction during the defoliation year or 1 year after defoliation. Control measures should focus on avoiding severe defoliation for two consecutive years. [Copyright &y& Elsevier]

Abstract: Postfire tree species compositions are predicted to be the same prior to fire according to the direct regeneration hypothesis (DRH). We studied 94 upland boreal forest stands between 5 and 18 years after fire in Ontario, Canada. Postfire species-specific regeneration density was positively related to prefire stand basal area for Pinus banksiana, Populus spp., Betula papyrifera and Picea mariana, but not for Picea glauca and Abies balsamea. In addition, seedling density of Populus spp., B. papyrifera, P. mariana, P. glauca and A. balsamea were positively affected by build up index and, except Populus spp., their density increased with age of burn. To facilitate testing the DRH, we introduced a term called compositional difference (CD) that is the difference in a species relative percentage between the postfire and prefire stand. The testable null hypothesis is CD=0 for a given species. CD was not different from 0 for P. banksiana, was 19.8% for Populus spp., 10.4% for B. papyrifera, −17.9% for P. mariana, −14.6% for P. glauca, and −14.9% for A. balsamea, indicating fire increases broadleaves at the expenses of mid- and late-successional coniferous species. Compositional increases of Populus spp. and B. papyrifera in postfire stands occurred mostly where these species were a minor component prior to fire. In conclusion, the DRH was supported by the specific positive relationships between postfire regeneration densities and prefire basal area for P. banksiana, Populus spp., B. papyrifera and P. mariana. However, if the DRH is used for predicting postfire composition, P. banksiana is the only species that had the same composition between postfire and prefire stands. Nevertheless, CD for P. banksiana was negatively related to its prefire composition. Similarly, CD for other species was negatively related to their prefire compositions with varying effects of build up index and age of burn. Our results suggest, if fire occurrences increase with global change, the boreal landscape will be more dominated by hardwoods and mixtures of conifers and hardwoods. [Copyright &y& Elsevier]

• A model was created to examine the reliability of maintenance budget allocation. • The model was applied to network-level pavement maintenance in Canada. • The impacts of algorithm selection and parameter tuning were studied. • The significance of pavement clustering in increasing reliability was highlighted. • The importance of incorporating actual pavement improvement curves was clarified. The purpose of this paper is to increase the reliability of the network-level pavement maintenance budget allocation by reducing uncertainties of algorithm selection and parameter tuning. In this paper, reliability is defined as the ability of a network-level pavement maintenance plan to improve the condition of a pavement network within a certain budget. In order to quantify reliability, the reliability index is defined as the ratio between the post-maintenance network condition and the net maintenance cost. With this purpose in mind, a two-objective optimization model was developed. To test its applicability, the model was applied to a pavement network in Canada. The model was solved using the Non-Dominated Sorting Genetic Algorithm II and the differential evolution algorithms. Finally, the reliability indices of algorithms and termination criteria were computed. The results indicated that the differential evolution algorithm recommended less frequent but more intense interventions that made the solutions expensive and less reliable. This paper contributed to the network-level pavement maintenance body of knowledge by (1) developing a multi-objective optimization model to reduce uncertainties of parameter tuning and algorithm selection; (2) increasing the reliability of budget allocation; (3) showcasing the significance of pavement clustering in increasing reliability; and (4) developing and incorporating actual pavement improvement curves. [Display omitted] [ABSTRACT FROM AUTHOR]

Extensive research exists on the potential impacts of foresight; however, a comprehensive understanding of the factors that lead to foresight impact, particularly in influencing senior management decisions, is relatively sparse. This study addresses this by reporting on a Delphi and expert panel involving eight senior Canadian government foresight program leaders. These leaders were asked to help identify and then rate a list of factors that they felt resulted in their foresight projects impacting senior management decisions. Results suggested that factors such as foresight methodology, while leading to good foresight, do not necessarily result in senior decision-maker impact. Instead, criteria defined in this paper as the "consultants' toolkit," such as understanding the senior decision maker's pain points and foresight managers having a strong understanding of the organization's inner workings, play a crucial role. The expert panel discussion suggested that the importance of senior management decision-making factors depends on three mediating variables: The temporal orientation of the Department, the foresight orientation of the department's senior management, and the nature of the relationship between the foresight manager and the senior decision maker. • Paper identifies factors that lead to senior management accepting and implementing the results and recommendations of foresight projects. • A two round Delphi and expert panel was held as part of this study with eight senior Canadian government foresight program leaders • Managers identified factors that relate more to a consultant tool kit than foresight methodology that results in decision impact foresight. • A contingency model is presented with three elements which the impact factors importance • The paper highlights the importance of research partnerships that include both academics and practitioners [ABSTRACT FROM AUTHOR]

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In the colonial state of Canada, rurality is quintessentially necropolitical, a technology of colonial nation building that has forcibly displaced hundreds of sovereign Indigenous nations to accommodate white occupation. Throughout vast rural social geographies that remain conservative political strongholds, Indigenous peoples living in their ancestral homelands are positioned as contaminants of dignified white rural life and obstacles to food and resource exploitation, agri-industrial expansion, and growing multicultural diversity. Under colonial rural logics, Indigenous bodies are disposable and ungrievable, in deeply gendered and sexualized ways. In this paper, I draw on Achille Mbembé's concept of necropolitics to examine rural genocide as a form of colonial and neocolonial settler placemaking, with a specific focus on gender-based violence as one form of enacted necropolitics. I examine how stark racial rural inequities precipitate racialized-gendered death by enabling incessant white entitlement to Indigenous lands and bodies, allowing what the United Nations has called the gender-based genocide of Indigenous girls, women, and 2Spirit people to occur with impunity. I then consider the imperial logics of homesteading as a new/old settler tactic emerging under new anthropogenic and pandemic-related pressures, where urbanites seeking rural escapes fuel the colonial appropriation and commodification of sacred Indigenous land-based knowledges while eroding already precarious Indigenous territories. I conclude by exploring how reimplicating increasingly mobile and urbanized Indigenous young people in kinscapes—mobile, temporal circles of relations with their kin and homelands—might fortify vital Indigenous land and body sovereignties and unsettle colonial necropolitical rural ontologies. • Necropolitics in rural Canada are a form of colonial and neocolonial settler placemaking. • Racial rural inequities enable gender-based genocide of Indigenous women and 2Spirit people. • White homesteading and nature-based gentrification fuel commodification of Indigenous kinscapes. • Kinscapes enacted among Indigenous kin and homelands support Indigenous youth resurgence. • Kinscapes fortify vital Indigenous land and body sovereignties and Indigenous youth worldmaking.. [ABSTRACT FROM AUTHOR]

The rapid development of new digital technologies for natural resource management has created a need to design and update governance regimes for effective and transparent generation, sharing and use of digital natural resource data. In this paper, we contribute to this novel area of investigation from the perspective of institutional change. We develop a conceptual framework to analyze how emerging natural resource data governance is shaped by related natural resource governance; complex, multilevel systems of actors, institutions and their interplay. We apply this framework to study forest data governance and its roots in forest governance in Finland and Canada. In Finland, an emphasis on open forest data and the associated legal reform represents the instutionalization of a mixed open data-bioeconomy discourse, pushed by higher-level institutional requirements towards greater openness and shaped by changing actor dynamics in relation to diverse forest values. In Canada, a strong institutional lock-in around public-private partnerships in forest management has engendered an approach that is based on voluntary data sharing agreements and fragmented data management, conforming with the entrenched interests of autonomous sub-national actors and thus extending the path-dependence of forest governance to forest data governance. We conclude by proposing how the framework could be further developed and tested to help explain which factors condition the formation of natural resource data institutions and subsequently the (re-)distribution of benefits they govern. Transparent and efficient data approaches can be enabled only if the analysis of data institutions is given equal attention to the technological development of data solutions. • We studied how emerging forest data governance is shaped by dynamics in forest governance. • Forest data institutions may support path-dependency or renewal of forest governance, depending on context. • Innovative data institutions may enable a dynamic governance continuum from closed to open natural resource data. • Future studies should focus on feedback effects of data governance on natural resource governance. [ABSTRACT FROM AUTHOR]

This paper explores the perceptions and future imaginaries of a group of union members in Manitoba, Canada, concerning climate change, energy transition, and the roles of unions and workers in climate politics. Based on interviews with 30 rank and file workers carried out through the winter of 2020, the results suggest some starting points for a more active engagement between the labour movement and climate politics—an engagement that is central to climate justice, and that becomes more vital every moment as workers both participate through their waged labour in the production of ecological crisis, and stand to suffer intensely from both climate change and from elite-led energy transitions. • Unionized workers broadly agree with the characterization of "climate emergency." • Participants connect to climate change through expanded spatial and temporal considerations. • There is broad agreement that climate change is a key consideration in unions' protective role. • Union workers' future imaginaries of energy transition do not frequently engage with "system change" narratives. • Union workers characterize transition as something done to, rather than by, workers. [ABSTRACT FROM AUTHOR]

Toponyms contain Indigenous modes of understanding and reflect ecological histories and deep relationships between Indigenous communities, arctic environments, time, and land. Completed toponymic studies are useful for researchers to access; however, they are notoriously difficult to find. Many are completed by community groups and published on their websites, or are completed by government agencies and published as grey literature. An inventory of toponym projects has not existed, and eliciting what has been completed where, with whom, and by whom has required long searches through academic and grey literature. In this paper, we inventory Indigenous toponymy projects in the Canadian North, and document our efforts to produce a publicly accessible index where toponymy projects can be found via maps. New or unknown resources can be added by users. Our purpose, here, is to document the production of this resource and to increase awareness of toponymical resources among communities, researchers, scientists, and other stakeholders. We reflect on knowledge gained through construction of the index and make observations on trends in Inuit toponym research through time. We argue for renewed efforts across arctic sciences to recognize Inuit-environment relationships through reference to place names and the ecological histories they encapsulate, and we provide considerations for future work. • Inventory of Indigenous place names projects in arctic Canada. • Accessibility of knowledge through online interactive map. • Use of ESRI Experience Builder to make toponymy projects publicly searchable. [ABSTRACT FROM AUTHOR]

• A call for a new research agenda to more explicitly include justice in transitions. • A review of literature examining how different disciplines have addressed the concept of justice. • An analytical framework and set of recommendations for integrating justice in transition research and practice. This paper argues that transitions research more broadly needs to take more account of justice in its analysis. This paper draws primarily from environmental and energy justice literature to engage with the concept of justice in transitions research, as it seeks justice for people, communities, and the non-human environment from negative environmental impacts. This is achieved through different forms of justice: distributive, procedural, and recognition. Our paper concludes with reflections upon the application of a justice approach to sustainability transitions research and offer insights into a potentially new research agenda. [ABSTRACT FROM AUTHOR]

The residential energy demand timing and magnitude are highly impacted by occupants' behaviors and activities. However, acquiring a reliable data source for these activities is a vital challenge, especially on an urban scale. In this context, this paper presents a stochastic bottom-up model for generating electrical loads for residential buildings in Canada. The proposed model is developed to investigate the impact of different household characteristics, appliance stock, and energy behaviors on the timing and magnitude of non-HVAC energy loads at individual or multiple houses. The proposed tool includes four main modules for generating stochastic profiles of occupancy, lighting demand, appliance load, and domestic hot water demand (DWH). The model is calibrated using the Canadian time use survey (TUS), energy use statistics, and appliance ownership surveys. The model is scalable and can be extended to serve various applications by adding new modules and data sources in the future. This paper presents the model development methodology, generated high-resolution load profiles, and validation in comparison with actual measurements. Finally, the model is used for studying the impact of household characteristics on total energy use. Future work will include incorporating this model into a comprehensive agent-based model for designing and testing effective demand response programs. • A stochastic load profile generator is developed for residential buildings. • Canadian TUS data is used to identify common patterns of activity schedules. • Stochastic profiles are developed for occupancy, lighting, appliances, and DWH. • The tool is demonstrated and validated using a case study. • The impact of household characteristics on total energy use is studied. [ABSTRACT FROM AUTHOR]

This paper analyzes the historical stock returns of 10 medicinal cannabis companies for the period between 2015 and 2020, when the legalization of recreational cannabis was debated in Canada. The results of our analysis indicate that the industry was responsive to the announcements of regulatory change that led towards legalization. Furthermore, we compare the performance of cannabis companies to that of similar businesses. The results of the comparative analysis indicate that the performance of the matched pairs is largely correlated over time. Additionally, the pre-legalization performance of cannabis companies was better than their post-legalization performance. Given that cannabis companies did not outperform their matched pair, we can confirm that legalization did not have a significantly positive effect on the industry. We can also infer that, from a stock market perspective, the legalization of recreational cannabis has been unsuccessful thus far. [ABSTRACT FROM AUTHOR]

Shipping in the Canadian Arctic has a long history, encompassing diverse maritime pursuits, ranging from traditional Inuit subsistence practices to European exploratory expeditions, whaling, and fur trading. The escalating impacts of climate change in the Canadian Arctic have created ample opportunities for Arctic shipping activities related to fishing, cruise tourism, resource (mineral) transportation, research, and government services. Nowadays, the necessity of developing a sustainable economy, the need for environmental protection, and the imperative of reconciliation with Indigenous Peoples present considerable challenges for the Canadian government in regulating Arctic shipping. To comprehend the contemporary issues of Arctic shipping governance, this paper conducts an overview of the history of Arctic shipping activities in Canada and reviews Canada's diverse policies and laws that have been instituted to govern Arctic shipping. Drawing upon the analysis of these policies, the article advocates for a collaborative governance framework to cope with the multifaceted challenges confronting the governance of Arctic shipping in Canada. Such a framework ought to prioritize enhancing cooperation, integrating unilateral and multilateral policies and laws, respecting the rights of Indigenous Peoples, and involving Inuit in Arctic shipping governance. [ABSTRACT FROM AUTHOR]

• New carbon-sequestration geosystem paradigm proposed for screening CO 2 repositories. • Deposition, burial history 1st-order controls on repository attributes, traps, etc. • Genetic understanding of geology enables property prediction away from data control. • Case-study application to heavily industrialized region of onshore Canada. In this paper, I propose a new geoscience paradigm for evaluating potential carbon-sequestration targets. I introduce the term carbon-sequestration geosystem to study and describe portions of sedimentary basins where all the geologic components necessary for the safe and long-term storage of CO 2 are present. The purpose of this type of analysis, most appropriately applied at a basin-screening stage, is to derive a holistic, genetic, and predictive understanding of the geology – the depositional systems, structural setting and other factors that are direct controls on storage, injectivity, potential for induced seismicity, and other critical factors. To illustrate the concepts, I present a re-evaluation of the geologic carbon-sequestration options in Southern Ontario (Canada) where business and environmental needs, mostly associated with hard-to-abate industries, require urgent action. Legacy wireline-logs, core, and outcrop data are the main data sources available in this onshore setting. The results of this new, independent study are broadly similar to those of previous studies: the Cambrian section, a saline aquifer, is the most likely candidate to be a CO 2 repository. However, the methodology used identified several issues (e.g., stratigraphic heterogeneity, proximity to basement) that will need addressing by targeted data collection and/or analysis before site-selection for a test should be undertaken. [ABSTRACT FROM AUTHOR]

[Display omitted] • Conservation organizations use collaboration and confrontation to achieve goals. • An organization addressing urban bird collisions initially focused on bird rescue. • Soon incorporated data-backed advocacy to make buildings safer for birds. • Successes emerged gradually, and largely from collaboration. • Confrontation occurred indirectly through third parties using their data. To achieve their goals, non-governmental organizations (NGOs) frequently interact with public and private stakeholders. Interactions can be generally characterized as falling within a continuum of collaborative to confrontational approaches, with each approach having advantages and disadvantages. A more collaborative approach may lead to opportunities to share data and access funding; however an NGO may risk its goals becoming compromised. Similarly, a more confrontational approach can draw attention to NGO causes and effect change, but may limit opportunities for partnership. This paper considers how a NGO concerned with preventing bird-window collisions has balanced between collaboration and confrontation with municipal government and commercial properties. While this NGO's strategy has been largely collaborative, its experience also demonstrates that confrontational approaches, while less frequent and indirect, also have a role in attaining objectives. [ABSTRACT FROM AUTHOR]

One of the most vastly used protocols to protect services traffic like the web and email is Transport Layer Security (TLS). In 2018 the Internet Engineering Task Force (IETF) standardized the latest version TLS 1.3, Introduced a significant enhancement in the protocol performance, and presented some new features. One of the new features is zero round trip-time (0-RTT) handshake mode, where the client can send the application data to the server within the handshake messages before the TLS connection is fully established. However, this application data is replayable. The replay attacks in 0-RTT handshake mode have been studied, and several mechanisms are proposed for protection, these proposed mechanisms are not able to prevent replay attacks when the server functionality is provided by a distributed environment such as multiple servers in a cloud computing environment or a CDN. This paper introduces TLS Guard as a new mechanism that extends TLS 1.3 to prevent replay attacks in a distributed environment. We evaluated a prototype TLS Guard implementation in controlled experiments and showed that its effect comes at the cost of some CPU overhead. More importantly, we showed that TLS Guard is scalable and tolerates faults without any required changes on the client side. [ABSTRACT FROM AUTHOR]

• Mixed economies challenge the assumption that people need capitalist labour. • Canadian government is newly invested in incorporating Indigenous wage labour. • Diamond mines target Indigenous workers as marker of "responsible extraction". • The mixed economy resists dispossession by northern extractive capital. Grounded in an analysis of the mixed economy of the Northwest Territories (NWT), Canada, this article examines the contemporary relationship between surplus populations and colonial capitalist accumulation of new spaces. The functioning of the reserve surplus population requires that the unwaged, or under-waged, want, or need, wage labour. Thus, like all capitalist relations, a reserve surplus population is predicated on the separation of workers from their means of subsistence: what Marx calls "primitive" accumulation. Traditionally the home of the Dene and Inuit, and now home to approximately equal parts Indigenous (primarily Dene, Inuit and Métis) and non-Indigenous residents, the NWT mixed economy is a set of social relations that combine subsistence and social reproduction, wherein labour is oriented toward the daily and intergenerational wellbeing of the collective rather than the profit of the individual, with capitalist production. With a focus on the diamond industry, this article traces the shifting Canadian State approach to Indigenous labour in this space across time and the state policies and extractive projects that have both "made" Indigenous labour surplus and rhetorically justified their existence through evocations of regional unemployment and imagined dependency. In so doing, the paper identifies a move from the welfare-state era, wherein the state structured northern Indigenous "dependency", to the neoliberal era, wherein dependency became a problem to be solved through increased Indigenous incorporation into capitalist wage labour. The northern diamond mining industry, responding to both Indigenous demands for land recognition and neoliberal imperatives for lean operations, exemplifies this latter approach. [ABSTRACT FROM AUTHOR]

• A Hydro-environmental model developed to model fate and transport of bacteria. • Inverness stormwater pond in Calgary, Alberta, Canada, was used to test the model. • Volume of Fluid and sediment transport models improved the simulation of bacteria. • The middle of the pond was found as the optimal location for withdrawal for reuse. • Tree barriers are shown to reduce transport of bacteria toward the optimal location. This paper presents a three-dimensional CFD based hydro-environmental model that simulates fate and transport of bacteria in water bodies. The model numerically solves unsteady incompressible Reynolds-Averaged Navier-Stokes equations on a structured grid. Free-floating and particle-attached bacteria were modelled separately regarding both fate and transport. Therefore, a sediment transport model was integrated into the main model in order to model particle-attached bacteria transport. In addition, Volume of Fluid approach was implemented to capture the water surface movements. Wind effect was also considered in the modelling using shear stress on the water surface. Since stormwater reuse is the source of some public health concerns, a stormwater pond was chosen as the test case for the model. The model was applied to simulate the distribution of bacterial indicator organisms in the Inverness Stormwater Pond in Calgary, Alberta, which is a large T-shaped pond with several inlets and outlets. The bacteria distribution in the pond was simulated for three rain events that occurred in the area. In six locations of the pond the modelled bacteria distribution was compared to collected data using non-dimensional bacteria concentrations. The comparison showed good agreement and indicated that the middle of the pond, close to the surface had the lowest levels of bacteria and thus, was considered the optimal location for withdrawal for reusing pond water. Furthermore, planting a tree barrier on the north bank of the West wing of the pond was shown to mitigate bacteria transport away from the inlets into the pond body and substantially decrease the risk of contamination at the optimal water withdrawal location. [ABSTRACT FROM AUTHOR]

• Immigrant youth are integrating successfully into Canada. • Immigrant youth face systematic and interpersonal discrimination. • More focus is needed on immigrants' cultural and social contributions. • Current research and policy often promote assimilation. • Inclusion and multiculturalism are required for integration. Although there is substantial research examining adult perspectives of immigration and integration, there is notably less data on youth attitudes and experiences. When youth are surveyed, a preliminary review of the existing literature reveals that non-immigrant voices are very rarely included. This systematic literature review (a) identifies the major themes and summarizes the findings of existing research; (b) determines gaps in the existing literature and; (c) proposes recommendations for future integration research, policy, and interventions. Ultimately, this paper finds that integration policy and research in Canada tends to focus on the changes required by immigrant youth but rarely discuss the cultural adaptation and inclusion required by settled Canadians. A paradigm shift in research, settlement practice, and policy is necessary to better reflect the bi-directional cultural exchange and the mutual responsibilities of integration. [ABSTRACT FROM AUTHOR]

This paper proposes to develop a two-step model based on administrative (spatial) micro-data to identify the determinants that makes residential transactions resulting in demolition and reconversion. A logistic model is estimated and serves as a major input to build land use maps to identify where such pattern is more likely to occur in future. The empirical analysis is based on a medium city size (Québec City, Canada) using the yearly tax assessment roll spanning a decade (2006–2016). Results support conclusions from previous studies regarding determinants of demolition, with smaller and older homes having a higher probability of facing such a situation. The results also underline the relative importance of local environment and location as a factor that also influences the probability of facing a demolition. The predictive exercise suggests that future reconversion through demolition should occur around concentrated spots within the city. The paper aims at furnishing tools to planners to localize where potential teardowns should occur over space and allows them to anticipate appropriate politics instead of reacting to a given situation. [ABSTRACT FROM AUTHOR]

Turning movements are one of the key inputs required for several traffic studies. Several methods have been developed to measure them. However, present techniques have high operational or capital costs, which motivate researchers to develop new techniques to estimate turning movements. However, there is neither a flexible technique available to make best use of different available information types, nor a framework that supports deciding additional data to achieve a target accuracy. This paper proposes a new methodology using all available data to identify the subspace containing all solutions and determine its centroid; thus, providing the most realistic and non-extreme solution. In addition, a framework, including scenarios with different data combinations, is developed with capability to evaluate the proposed solution and then locate further measurements to achieve the target accuracy. The framework is validated using a considerable set of intersections at Edmonton city, Canada. The results show that the proposed framework can achieve the target accuracy with minimum field measurements saving time, effort and cost. [ABSTRACT FROM AUTHOR]

Acoustic signals function in intrasexual mating competition in a wide variety of species, including humans. The low voice pitch of human males has been proposed to represent an honest signal of formidability. Although voice pitch in men affects perceptions of size and dominance, it is relatively weakly associated with objective measures of formidability such as body size and strength. As a result, some authors have argued that low male voice pitch is not a valid signal of formidability but is deceptive and salient only because it hijacks a tendency to perceive lower frequency sounds as emanating from larger sources. In this paper, we consider theoretical and empirical issues associated with this perceptual exploitation hypothesis and ask whether male voice pitch transmits information about formidability. We utilize mediation models to investigate whether male voice pitch is an honest signal of formidability in data collected from university students in the U.S. (n = 231 male speakers, 565 male raters) and Canada (n = 74 male speakers, 108 female raters, 65 male raters). In both data sets, male voice pitch mediated the relationship between objective (measured by height) and perceived formidability. Collectively, these results indicate that men's voice pitch transmits information about formidability from signaler to receiver. • We tested whether men's voice pitch signals formidability in two samples. • Listeners could accurately assess formidability from men's voices. • Male speakers' voice pitch mediated listeners' ability to assess formidability. • Mediation by voice pitch was independent of resonant (formant) frequencies. • Men's voice pitch appears to honestly signal formidability. [ABSTRACT FROM AUTHOR]

In this paper we report reflections about the scholarly mentoring experiences of undergraduate nursing students (mentees) and faculty members (mentors) involved in an intellectual partnership at a Canadian university. The paper specifically recounts the impacts of the transformative process experienced by 18 mentees and three mentors, based on their in-depth written critical reflections. In this collaborative initiative, the constructivist framework of Shor and Freire, and Mezirow's Transformative Learning Theory, served as foundations for all interactions between mentees and mentors, and guided the analysis and interpretation of their written self-reflections. Mentees and mentors were motivated by complementary goals for the intellectual relationships. Their combined contexts, self-reflective, critical dialogue, shared assumptions and ideas worked to ignite a critical awareness of their potential and self in their professional world. Sharing new ways of thinking and points of view stimulated their transformation on various levels –emotional, cognitive, and spiritual. [ABSTRACT FROM AUTHOR]

Over the course of several months in 2018, more than 240 people were arrested in Burnaby, BC, Canada for disrupting the expansion of the Trans Mountain Pipeline. While those arrested shared a willingness to defy Canadian law in opposition to this pipeline development, the police applied differing degrees of force and violence while making these arrests. Informed by interviews with land defenders and engagements on the frontlines of this conflict, this paper considers what these discrepancies in police tactics teach us about logics of settler colonial law, authority, and violence. We do so by engaging in a discussion of the foundational paradox of the state – that its constitutional law is unlawfully constituted – and by presenting the politics of recognition as a strategy employed by the settler colonial state in its attempts to reconcile the contradiction between the state's claims to legal authority and its own unlawful foundations. However, whereas recognition and reconciliation are often presented in contrast to earlier more violent eras of colonial governance, we argue that colonial recognition is a logic of state violence which determines how, and against whom, state violence is distributed. When assertions of Indigenous jurisdiction take unrecognized or deviant forms, the state ultimately resorts to violence to remove these competing claims to legal authority. Moreover, we argue that police violence against Indigenous peoples asserting "sovereignty on the ground" should not be understood as merely a matter of law enforcement – rather, this is a productive form of violence through which the legal authority of the state is actively established. [ABSTRACT FROM AUTHOR]

Agroecology and food sovereignty have gained a significant foothold in the Global South; however, in the Global North, there are significant challenges hindering the adoption of these concepts. Drawing on participants' insights following an Agroecology Field School and Research Summit held in Ontario, Canada in 2018, this paper presents the context for agroecology's potential expansion in this country. We argue that three key dimensions must be addressed in order for the concept to be advanced: 1) Engagement in food system governance; 2) Building networks of solidarity between academics, activists, and food producers/harvesters; and 3) Realization of Indigenous food sovereignty. • Politics remain one of the most significant challenges facing agroecology in Canada. • Agroecology can strengthen food governance at community and government levels. • Agroecology requires solidarity between academics, organizers, and food producers. • Agroecology must address historical and ongoing injustices facing Indigenous people. [ABSTRACT FROM AUTHOR]

We examine the effect of the nationality and strength of friendships on self-reported levels of satisfaction among international students attending a mid-sized university in Canada. Satisfaction scales capture a variety of dimensions of the international study experience, including cultural, educational and social aspects. We find evidence that international students with a larger proportion of host-national friends (Canadians) enjoy greater cultural and social satisfaction and surprisingly the vast majority of the positive effect comes from having a greater proportion of host-nationals in the weakest friendships, suggesting the importance of weak ties. Furthermore, international students with a greater proportion of co-national friends (from the same country as the respondent) report lower levels of cultural and social satisfaction and, again, most of the effect comes from the weakest relationships. We do not find evidence of a relationship between friendship patterns and educational satisfaction. This paper advances the growing body of work on the instrumental value of weak ties in social relationships but also their significance in structuring social experiences, particularly satisfaction and wellbeing. We recommend further research to better understand the processes through which newcomers make new friends in new locations, and the consequences of these social networks in the broader integration experience. [ABSTRACT FROM AUTHOR]

• Applying a justice in transitions framework to the case study of the Energy Futures Lab. • Operationalizing concepts of environmental justice in transitions projects. • Recommendations for researchers and practitioners for transitions projects. While the concept of 'just transitions' has become more and more prominent in academic and popular discussions of sustainability transition, these conceptions are often framed in purely economic terms, and focus on the economic impact on communities, regions, and nation-states. We argue that a broader conception of justice in transitions, and in particular energy transitions, is required. Questions such as who will win and who will lose as society transitions to more sustainable future, who decides what the transition will look like, how are those historically excluded from decision making recognized, and how are the interests of non-humans and future generations included are important to answer in order to ensure that concepts of justice are included in transitions processes. Answering these questions is critical in "ensuring that system transitions are not only more sustainable, but also more just" (Williams and Doyon, 2019, p. 144). In this paper, we apply the justice and system transition framework (Williams and Doyon, 2019) to the Energy Futures Lab (EFL). We find that while the EFL has made great strides towards justice in transition, the EFL is also a demonstration of the challenges of incorporating justice such as addressing issues of power dynamics and conceptions of diversity and inclusion. We also find that the justice and system transitions framework proves to be a valuable tool in assessing justice in transitions projects. Going beyond the common 'just transition' approach that focuses on distributive justice gives a richer conception of justice and ensures that procedural and recognition approaches are included. [ABSTRACT FROM AUTHOR]

Three indicators (GDP, PCDIIP-rh and Total Population) are selected in this paper to study the effect of sample length on forecasting validity of FGM(1,1). It has passed the test, such as development coefficient, mean relative error within the sample, and ratio of mean square error. The above three sets of indicators are proved to be suitable for FGM(1,1) to make predictions. The results of the study indicate that the forecasting of 4–6 sample lengths is the most appropriate. The MAPE of 5 sample length is better than sample lengths 4 or 6. The conclusion of this study is verified by taking the oil production of India and Canada as examples. On this basis, the sample length 5 is selected to predict the average annual concentration of PM 2.5 from 2019 to 2021 in Xingtai. The forecasting results show that the PM 2.5 in Xingtai will decline in the next three years, but it will not reach the national level 2 concentration limit. [ABSTRACT FROM AUTHOR]

This brief article presents a biographical sketch of Friedrich (Fritz) Grein, a Canadian quantum chemist who has had a long scientific career of more than 65 years. His first scientific paper was published in 1958 and his most recent one was published this year (2023). [Display omitted] • Biography. • Distinguished quantum chemist. • Exceptionally long career. [ABSTRACT FROM AUTHOR]

A student's accuracy on drug calculation tests may be influenced by maths anxiety, which can impede one's ability to understand and complete mathematic problems. It is important for healthcare students to overcome this barrier when calculating drug dosages in order to avoid administering the incorrect dose to a patient when in the clinical setting. The aim of this study was to examine the effects of maths anxiety on healthcare students' ability to accurately calculate drug dosages by performing a scoping review of the existing literature. This review utilised a six-stage methodology using the following databases; CINAHL, Embase, Medline, Scopus, PsycINFO, Google Scholar, Trip database ( http://www.tripdatabase.com/ ) and Grey Literature report ( http://www.greylit.org/ ). After an initial title/abstract review of relevant papers, and then full text review of the remaining papers, six articles were selected for inclusion in this study. Of the six articles included, there were three experimental studies, two quantitative studies and one mixed method study. All studies addressed nursing students and the presence of maths anxiety. No relevant studies from other disciplines were identified in the existing literature. Three studies took place in the U.S, the remainder in Canada, Australia and United Kingdom. Upon analysis of these studies, four factors including maths anxiety were identified as having an influence on a student's drug dosage calculation abilities. Ultimately, the results from this review suggest more research is required in nursing and other relevant healthcare disciplines regarding the effects of maths anxiety on drug dosage calculations. This additional knowledge will be important to further inform development of strategies to decrease the potentially serious effects of errors in drug dosage calculation to patient safety. [ABSTRACT FROM AUTHOR]

This paper explores how arborists negotiate their work environment, including the pressures of policies, the labour market, technologies, government regulations and lack thereof, and the non-human agencies with which they are confronted. The political climate surrounding urban forestry in Southern Ontario influences and governs operations and physical labour. There are many (f)actors and conditions (both external and internal) surrounding fieldwork in urban forestry and that these affect work and personal lives. The questions guiding this paper include: (a) How do various political and labour conditions impact arborists’ sense of pride, independence and skill? ; (b) What are the social and labour divisions within the culture of arboriculture? ; and (c) What is the lived experience of urban forest workers, their employment, and what is it like to be a frontline worker ? This paper provides a closer look at licensing, work conditions, subcultures and social dynamics in urban arboriculture. Using accounts from semi-structured interviews with arborists across Southern Ontario and by examining field arborists’ activities, relationships with co-workers and working conditions through participant observation and ethnographic field notes, I explore and reveal how arborists feel about their working environment and the labour processes and people who oversee and surround them. Findings reveal that despite dehumanizing (f)actors within the field, there are elements of resistance and negotiation, and potential for an alternative future. [ABSTRACT FROM AUTHOR]

• IRBOs are key institutions supporting hydrodiplomacy in transboundary river basins. • IRBOs produce and use science to support hydrodiplomacy. • When producing science, IRBOs balance capacity, ownership, and politics. As key venues for interaction and cooperation, international river basin organizations (IRBOs) are significant contributors to hydrodiplomacy in transboundary river basins. As part of their efforts to support hydrodiplomacy, IRBOs engage in the production and use of science. The manner in which that science is produced, and how it contributes to hydrodiplomacy, is not well understood. This paper examines the production and use of science by three IRBOs: the (US – Canada) International Joint Commission, the International Commission for the Protection of the Danube River, and the Mekong River Commission. We find the science produced by the IRBOs to support hydrodiplomacy extends beyond measuring and monitoring to include more advanced and analytical forms of science. In producing science, we observe that the IRBOs balance considerations of capacity, ownership, and how the politics of the basin will influence the production and use of the science. Given the challenge of balancing across these considerations, future research is needed to determine what mechanisms and processes for producing science can best facilitate its use in hydrodiplomacy. [ABSTRACT FROM AUTHOR]

• This article answers criticisms about the malleability of the resilience concept. • The three necessary features of the resilience concept are clarified. • A parallel concept, 'resistance', is introduced and its necessary features defined. • Introduction of 'resistance' reinforces both what 'resilience' is and what it is not. • Clarifying resilience as distinct from resistance has implications for policy. Despite criticisms that emphasize the ambiguity surrounding its definition and applications, the concept of resilience is featured prominently in studies of regional economies and regionally-based industries. This paper builds on this literature through a case study of Canada's automotive industry, an old industrial region (OIR) situated primarily in the southern portion of the province of Ontario. It also provides heightened definitional rigour to the concept of resilience and in so doing, advances the concept of 'resistance.' We argue that resistance better characterizes regional economies and regionally-based industries whose competitive advantages have eroded, are resistant to change, and remain locked into trajectories of slow decline but persist through shocks, disruptions and interventions, policy-oriented or otherwise. The clarification of resilience as distinct from resistance carries significant implications for policy. [ABSTRACT FROM AUTHOR]

A nursing workforce is pivotal for maintaining fundamental healthcare needs. However, recruitment and retention of this integral workforce in rural regions can be fraught with challenges. Whilst global research has identified barriers to working in rurality, these are often focused on the limited infrastructure and isolation of working in low- and middle-income countries. No previous qualitative meta-analysis has considered the factors affecting nurse recruitment in high-income countries. To provide a deeper understanding of the overarching barriers to nurse recruitment and retention in rural areas of high-income countries, a qualitative meta-analysis of primary qualitative research was conducted. Fourteen databases were reviewed systematically for qualitative research exploring barriers to nurse recruitment and retention. Twelve papers from Australia, Canada and the USA met the inclusion criteria. The current meta-analysis identifies themes around 'health service demands', 'challenges of accessing continuous professional development and clinical progression restrictions' and the 'rural demography' as overarching barriers for rural recruitment and retention of nurses in high-income countries. The results of the qualitative meta-analysis have provided new insights into the overarching themes, reflecting the consistent barriers to nurse recruitment and retention in rural areas of high-income countries. Interpretation of these themes highlights the importance of employing the right nurse who possesses a multi-dimensional skillset traversing both the working and community environment. This is discussed in light of current healthcare and education models and the development of innovative recruitment strategies, with the meta-analysis identifying avenues for future research to better address this growing concern. • Recruiting and retaining a skilled rural nursing workforce is now a key concern for all countries, globally. • There is significant disparity and unequal distribution of the existing nursing workforce between urban and rural areas. • Nurses in rural areas require a different generalist skillset which can be challenging for new or urban nurses to achieve. • Rural working is hampered by urban healthcare and educational models. • The potential negative impact on rural healthcare is concerning, unless a quality rural workforce strategy is devised. [ABSTRACT FROM AUTHOR]

• Mainstream green economies are market-driven models centered on growth and profit accumulation. • An analysis of labour is essential to shed light on green economies' logics and practices. • Recruitment promotes a representation of green jobs as sites for environmentalist politics. • The politicization of green work is ideological as it normalizes precarious and unpaid work. • Putting environmentalism to work extends the reach of labour subsumption. Market-driven green economies are premised upon the exploitation and ongoing commodification of both labour and nature. Yet their concrete incarnations experiment with new strategies to "secure and obscure" such processes. These strategies include the formulation and dissemination of an ideological representation of green labour in which environmentalism is "put to work." In this paper I focus on worker recruitment in Toronto and analyze its role in constructing green jobs as a venue for environmentalist politics, and therefore as "good" and "meaningful" work. My empirical material consists of green job announcements posted on GoodWork.ca, the main platform for green worker recruitment in Canada. Building on a Gramscian understanding of ideology, I query the concrete and symbolic functions performed by job ads and discuss them in relation to the structural processes that characterize Toronto's contemporary labour market. I suggest that an ideological representation of green work is used to select motivated and productive workers, justify the offer of non-specialized, precarious, or unpaid positions, and ultimately extend the reach of labour subsumption into spheres traditionally considered outside the employment relation, such as environmentalist activism. In turn, such a representation conceals the extent to which green economies rely on the exploitation of labour while it circumscribes environmentalist critiques within market-driven and economic growth-centered initiatives. [ABSTRACT FROM AUTHOR]

Despite frequent calls for Integrated Management (IM) of coastal and marine activities, there is no consensus on the 'recipe' for successful adoption and implementation, and there has been insufficient evaluation of successes and failures of IM to date. The primary rationale for IM is to overcome four major deficiencies of sector-based management: a) management of diverse activities by different agencies using different approaches, b) management generally focused on a subset of primarily ecological objectives that do not properly articulate or evaluate social, cultural, economic and institutional objectives, c) no mechanisms to evaluate or advise on trade-offs among objectives of activities in relation to objectives and d) no mechanisms to evaluate the cumulative effects of all managed activities. To help overcome this gap in knowledge, here we draw on our collective experiences working in Australia and Canada to develop and articulate a framework to help guide the practical implementation and evaluation of IM, which we define as: ' An approach that links (integrates) planning, decision-making and management arrangements across sectors in a unified framework, to enable a more comprehensive view of sustainability and the consideration of cumulative effects and trade-offs.' We argue that IM will be most easily and effectively achieved by linking and modifying existing sector-based plans in an overarching IM initiative that has nine key features: 1) Recognition of need for IM, 2) A shared vision by stakeholders and decision-makers for IM, 3) Appropriate legal and institutional frameworks for coordinated decision-making, 4) Sufficient and effective processes for stakeholder engagement and participation, 5) A common and comprehensive set of operational objectives, 6) Explicit consideration of trade-offs and cumulative impacts, 7) Flexibility to adapt to changing conditions, 8) Processes for ongoing review and refinement, and 9) Effective resourcing, capacity, leadership and tools. Drawing on these features we then articulate a process for the implementation and evaluation of IM that recognises five phases: i) Preconditions and drivers of change, ii) Intentional design and institutional rearrangement, iii) Enablers and disablers iv) An implemented IM process, and v) Review of IM performance and modification. Combination of the nine features of IM with the five phases in IM development provides a framework for implementation and a lens for evaluation of IM processes. We suggest that this framework provides a guide to the appropriate design of practical IM, which will assist in overcoming the current management deficiencies and improve the sustainability of marine resources in the face of change. • Sector-based management cannot adequately address trade-offs and cumulative effects. • Integrated planning and management is required for holistic sustainability. • Integrated Management can build on existing management arrangements across sectors in a unified way. • This paper provides a 'recipe' or framework for successful implementation of Integrated Management. • Nine key features and five phases of implementation provide a lens for evaluation of Integrated Management. [ABSTRACT FROM AUTHOR]

• Estimation shows that the waste LED lamps will reach 12 kt by 2021 in Canada. • Aluminum concentration of LED lamps was ˜22%. • Other major elements present in LED lamps were iron, copper and zinc. • Presence of heavy metals such as arsenic, antimony and lead were reported. • The toxic leachate concentration was reported below the BC landfill limit. Lamps and lighting products are the most commonly used electrical products around the globe. With the improvement in lamp technologies, products have grown complex and hence require an improved recycling process. Light emitting diode (LED) lamps consist of various valuable and hazardous metals such as copper, aluminum, iron, zinc, lead, arsenic, and antimony. This paper provides an estimation of the waste LED lamps generation in Canada. It shows that the cumulative waste from LED lamps is expected to reach 12 kT by 2021. A characterization of LED lamps was also conducted to estimate the metal concentration and landfill leachate toxicity characteristics, which have not yet been studied with a bulk sample. The results showed that aluminum is the major metal present in LED lamps with a concentration of over 22%, followed by iron, copper, and zinc. It also showed the presence of heavy metals such as lead, arsenic, and antimony. On the contrary to the previous study, the landfill leachate concentration for waste LED lamps was found to be lower than the British Columbia (BC) landfill limits for all metals. [ABSTRACT FROM AUTHOR]