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- OPEN ACCESS
- Alana A. E. Wilcox,
- Jennifer F. Provencher,
- Dominique A. Henri,
- Steven M. Alexander,
- Jessica J. Taylor,
- Steven J. Cooke,
- Philippe J. Thomas, and
- Lydia R. Johnson
The braiding of Indigenous knowledge systems and Western-based sciences offers insights into ecology and has emerged as a way to help address complex environmental issues. We reviewed the publicly available ecological research involving the braiding of Indigenous knowledge systems and Western-based sciences to support collaborative work in the Alberta oil sands region of Canada. We conducted a systematic review, coding for 78 questions in six categories: (1) literature search and bibliographic information; (2) research themes; (3) study setting and design; (4) knowledge systems; (5) power relationships, colonization, and ethical considerations in research; and (6) benefits and challenges of braiding. We identified six articles that braided knowledge, with those articles focusing on environmental management and monitoring for impacts of industrial activity in northern Alberta. Researchers used a broad range of approaches to gather Indigenous knowledge and scientific data and identified multiple challenges (e.g., asymmetries of power, resource availability, and funding) to research. Our findings show that more support is needed to foster, promote, and disseminate interdisciplinary collaborative work involving braiding. Additional support is also required to address Indigenous community research needs related to the assessment of environmental impact and reclamation, as well as the understanding of ecological threats across the region. - OPEN ACCESS
- Tim Alamenciak,
- Dorian Pomezanski,
- Nancy Shackelford,
- Stephen D. Murphy,
- Steven J. Cooke,
- Line Rochefort,
- Sonia Voicescu, and
- Eric Higgs
Much has been achieved by research into ecological restoration as a nature-based solution to the destruction of ecosystems, particularly in Canada. We conducted a national-level synthesis of Canadian restoration ecology research to understand strengths and gaps. This synthesis answers the following questions: Who is studying restoration? What ecosystem types are studied? Where is restoration studied? Which themes has restoration research focused on? Why is restoration happening? And how is restoration monitored and evaluated? We employed systematic searching for this review. Our results show that restoration research is conducted mainly by academics. Forest, peatland, grassland, and lake ecosystem types were the most commonly studied. There was a concentration of research in four provinces (Ontario, Quebec, Alberta, and British Columbia). Research into restoration has changed its thematic focus over time from reforestation to climate change. Legislation was the most common reason given for restoration. Restoration research frequently documented results of less than 5 years of monitoring and included one category of response variable (e.g., plant response but not animal response). Future research could investigate the outcomes of restoration prompted by legislation. At the dawn of the UN Decade on Ecosystem Restoration, this work demonstrates Canada's momentum and provides a model for synthesis in other countries. - OPEN ACCESS
- M. Morison,
- N.J. Casson,
- S. Mamet,
- J. Davenport,
- T. Livingston,
- L.A. Fishback,
- H. White, and
- A. Windsor
Amplified warming in subarctic regions is having measurable impacts on terrestrial and freshwater ecosystem processes. At the boundary of the discontinuous and continuous permafrost zones, and at the northern extent of the boreal forest, the Hudson Bay Lowlands has experienced, and is projected to continue to experience dramatic rates of climate change in the coming decades. In this review, we explore the impacts of climate change on terrestrial and freshwater ecosystems in the Hudson Bay Lowlands and other environmental processes that mediate these impacts. We surveyed published literature from the region to identify climate indicators associated with impacts on snowpacks, ponds, vegetation, and wood frogs. These climate indicators were calculated using statistically downscaled climate projections, and the potential impacts on ecosystem processes are discussed. While there is a strong trend towards longer and warmer summers, associated changes in the vegetation community mean that snowpacks are not necessarily decreasing, which is important for freshwater ponds dependent on snowmelt recharge. A clear throughline is that the impacts on these ecosystem processes are complex, interconnected, and nonlinear. This review provides a framework for understanding the ways in which climate change has and will affect subarctic regions. - OPEN ACCESSA boil water advisory (BWA) informs the public that there is an increased level of risk associated with their water and that they should boil it before consuming. Studies show that small communities in Canada are particularly likely to experience repeat and long-term BWAs. Climate change has led to changes in precipitation and temperature patterns, leading to region-specific impacts such as increased frequency, severity, or variance in floods, forest fires, droughts, freezing rain, and sea water intrusion. Academic and non-academic “grey” literature was reviewed to establish the most likely impacts of climate change on water treatment and infrastructure. Anonymized data from public drinking water systems in Canada was analyzed to determine the most common causes of BWAs between 2005 and 2020. Most BWAs reported were related to breakdowns/malfunctions along the distribution, though inadequate disinfection residual and turbidity or coliforms in the treated water were also common. Furthermore, statistical analysis of the data showed seasonal trends in some of these parameters. The results of this study suggest that increased precipitation, flooding, permafrost degradation, and forest fires are likely to have significant impacts on water safety in Canada.Highlights:Climate change effects are expected to worsen many current water challenges.Climate change will disproportionately impact small, rural, and remote water utilities.Water distribution systems are the main source of water safety risk in Canada.Groundwater-supplied systems experience a disproportionate number of BWAs.Seasonal trends in BWA reasons provide opportunities for targeted mitigation.
- OPEN ACCESS
- Jeremy R. Brammer,
- Allyson K. Menzies,
- Laurence S. Carter,
- Xavier Giroux-Bougard,
- Manuelle Landry-Cuerrier,
- Melanie-Louise Leblanc,
- Mikhaela N. Neelin,
- Emily K. Studd, and
- Murray M. Humphries
Traditional food systems based on harvest from the local environment are fundamental to the well-being of many communities, but their security is challenged by rapid socio-ecological change. We synthesized literature and data describing how a fundamental form of biodiversity, animal body size, contributes to the security of traditional food systems through relationships with species availability, accessibility, adequacy, and use. We found larger vertebrate species were more available, accessible, and used on a per kilogram basis, particularly for mammals. Conversely, larger species were no more or less adequate from a combined nutritional, health, and cultural perspective. Larger species represented more biomass, and this biomass required less time to harvest, with greater but more variable mean caloric returns over time. Smaller species provided more consistent caloric returns and were harvested during documented shortages of prey. This reliance on species with a range of body sizes is consistent with optimal foraging theory and the evolutionary value of flexibility, and highlights the importance of a biodiverse pool of species for traditional food security in times of change. Our synthesis of published literature and data highlights the many socio-ecological correlates of species size and how these relate to the security of traditional food systems. - OPEN ACCESS
- Jolene A. Giacinti,
- E. Jane Parmley,
- Mark Reist,
- Daniel Bayley,
- David L. Pearl, and
- Claire M. Jardine
The protection and promotion of healthy wildlife populations is emerging as a shared goal among stakeholders in the face of unprecedented environmental threats. Accordingly, there are growing demands for the generation of actionable wildlife health information. Wildlife health surveillance is a connected system of knowledge that generates data on a range of factors that influence health. Canada recently approved the Pan-Canadian Approach to Wildlife Health that describes challenges facing wildlife health programs and provides a path forward for modernizing our approach. This scoping review was undertaken to describe the range of peer-reviewed Canadian wildlife health surveillance literature within the context of the challenges facing wildlife health programs and to provide a quantitative synthesis of evidence to establish baselines, identify gaps, and inform areas for growth. This review describes patterns related to species, location, authorship/funding, objectives, and methodology. Five areas are identified that have the potential to propel the field of wildlife health: representativeness, expanded/diversified collaboration, community engagement, harmonization, and a shift to a solutions-focused and One Health mindset. This scoping review provides a synopsis of 10 years of Canadian wildlife health surveillance, challenges us to envision the future of successful wildlife health surveillance, and provides a benchmark from which we can measure change. - OPEN ACCESSIn Canada, the participation of Indigenous communities in research and monitoring is growing in response to calls for partnerships and heightened interest in bridging Indigenous and Western science-based knowledge. Yet, as settler scholars, we have noted inconsistencies in the articulation and operationalization of community participation in peer-reviewed literature. We conducted a scoping review of community participation in coastal and marine research and monitoring across Inuit Nunangat. This resulted in 72 studies, most of which were undertaken in Nunavut. Fourteen terms were used to articulate community participation, the most common being: participate, collaborate, community-based, consult, or variations of these terms. Among the studies that used community participation terms, we found that authors only defined terms 10% of the time. Community participation was operationalized primarily through interviews, mapping, and field observations. We assessed studies across a spectrum of community participation levels and found that most studies (81%) reflected minimal levels of participation (i.e., consultative, contractual, and less than contractual). Our results highlight the need for clarity in language use, transparency in reporting research practices, and stronger efforts to support Indigenous leadership and decision-making authority, all of which must be defined on a community or project basis.
- OPEN ACCESSCryptococcus neoformans is a globally important fungal pathogen, primarily inflicting disease on immunocompromised individuals. The widespread use of antifungal agents in medicine and agriculture supports the development of antifungal resistance through evolution, and the emergence of new strains with intrinsic resistance drives the need for new therapeutics. For C. neoformans, the production of virulence factors, including extracellular peptidases (e.g., CnMpr-1 and May1) with mechanistic roles in tissue invasion and fungal survival, constitute approximately 2% of the fungal proteome and cover five classes of enzymes. Given their role in fungal virulence, peptidases represent promising targets for anti-virulence discovery in the development of new approaches against C. neoformans. Additionally, intracellular peptidases, which are involved in resistance mechanisms against current treatment options (e.g., azole drugs), as well as capsule biosynthesis and elaboration of virulence factors, present additional opportunities to combat the pathogen. In this review, we highlight key cryptococcal peptidases with defined or predicted roles in fungal virulence and assess sequence alignments against their human homologs. With this information, we define the feasibility of the select peptidases as “druggable” targets for inhibition, representing prospective therapeutic options against the deadly fungus.
- OPEN ACCESS
- Anna Bazzicalupo,
- Susana C. Gonçalves,
- Rémi Hébert,
- Sigrid Jakob,
- Alfredo Justo,
- Gavin Kernaghan,
- Renée Lebeuf,
- Bruce Malloch,
- R. Greg Thorn, and
- Allison K. Walker
Despite the ecological importance of fungi, we still know little about their diversity in Canada. One of the largest hurdles to implementing fungal conservation initiatives is the lack of fungal distribution data. As anthropogenic impacts accelerate the speed of environmental change, it is imperative that we fill this major information gap, critical for fungal protection. To gain insight on the conservation status of Canadian macrofungi, we took advantage of the large and growing body of fungal biodiversity data from government research (Wild Species 2020), citizen science, trained independent mycologists, university, and museum biodiversity research. The majority of macrofungi are data deficient; we do not know their geographic distribution or habitat requirements, occurrence, or abundance in Canada. For mushrooms that fruit only a few days of the year and are often difficult to positively identify, there is a lot of work to overcome the uncertainty of distinguishing under-sampling from rarity. Our work stresses the importance of building a strong network of professional and amateur mycologists to develop resources, disseminate information to make educated decisions, and advance conservation actions. We found that several fungi can be prioritized; we present a short list for consideration for formal conservation assessment. - OPEN ACCESS
- Heike K. Lotze,
- Stefanie Mellon,
- Jonathan Coyne,
- Matthew Betts,
- Meghan Burchell,
- Katja Fennel,
- Marisa A. Dusseault,
- Susanna D. Fuller,
- Eric Galbraith,
- Lina Garcia Suarez,
- Laura de Gelleke,
- Nina Golombek,
- Brianne Kelly,
- Sarah D. Kuehn,
- Eric Oliver,
- Megan MacKinnon,
- Wendy Muraoka,
- Ian T.G. Predham,
- Krysten Rutherford,
- Nancy Shackell,
- Owen Sherwood,
- Elizabeth C. Sibert, and
- Markus Kienast
The abundance, distribution, and size of marine species are linked to temperature and nutrient regimes and are profoundly affected by humans through exploitation and climate change. Yet little is known about long-term historical links between ocean environmental changes and resource abundance to provide context for current and potential future trends and inform conservation and management. We synthesize >4000 years of climate and marine ecosystem dynamics in a Northwest Atlantic region currently undergoing rapid changes, the Gulf of Maine and Scotian Shelf. This period spans the late Holocene cooling and recent warming and includes both Indigenous and European influence. We compare environmental records from instrumental, sedimentary, coral, and mollusk archives with ecological records from fossils, archaeological, historical, and modern data, and integrate future model projections of environmental and ecosystem changes. This multidisciplinary synthesis provides insight into multiple reference points and shifting baselines of environmental and ecosystem conditions, and projects a near-future departure from natural climate variability in 2028 for the Scotian Shelf and 2034 for the Gulf of Maine. Our work helps advancing integrative end-to-end modeling to improve the predictive capacity of ecosystem forecasts with climate change. Our results can be used to adjust marine conservation strategies and network planning and adapt ecosystem-based management with climate change. - OPEN ACCESSAlthough many studies have focused on the importance of littering and (or) illegal dumping as a source of plastic pollution to freshwater, other relevant pathways should be considered, including wastewater, stormwater runoff, industrial effluent/runoff, and agricultural runoff. Here, we conducted a meta-analysis focused on these four pathways. We quantified the number of studies, amount and characteristics of microplastics reported, and the methods used to sample and measure microplastics from each pathway. Overall, we found 121 studies relevant to our criteria, published from 2014 to 2020. Of these, 54 (45%) quantified and characterized microplastics in discharge pathways. Although most focused on wastewater treatment plant effluent (85%), microplastic concentrations were highest in stormwater runoff (0.009 to 3862 particles/L). Morphologies of particles varied among pathways and sampling methods. For example, stormwater runoff was the only pathway with rubbery particles. When assessing methods, our analysis suggested that water filtered through a finer (<200 um) mesh and of a smaller volume (e.g., 6 L) captured more particles, and with a slightly greater morphological diversity. Overall, our meta-analysis suggested that all four pathways bring microplastics into freshwater ecosystems, and further research is necessary to inform the best methods for monitoring and to better understand hydrologic patterns that can inform local mitigation.
- OPEN ACCESS
- Grace E.P. Murphy,
- Jillian C. Dunic,
- Emily M. Adamczyk,
- Sarah J. Bittick,
- Isabelle M. Côté,
- John Cristiani,
- Emilie A. Geissinger,
- Robert S. Gregory,
- Heike K. Lotze,
- Mary I. O’Connor,
- Carlos A.S. Araújo,
- Emily M. Rubidge,
- Nadine D. Templeman, and
- Melisa C. Wong
Seagrass meadows are among the most productive and diverse marine ecosystems, providing essential structure, functions, and services. They are also among the most impacted by human activities and in urgent need of better management and protection. In Canada, eelgrass (Zostera marina) meadows are found along the Atlantic, Pacific, and Arctic coasts, and thus occur across a wide range of biogeographic conditions. Here, we synthesize knowledge of eelgrass ecosystems across Canada’s coasts, highlighting commonalities and differences in environmental conditions, plant, habitat, and community structure, as well as current trends and human impacts. Across regions, eelgrass life history, phenology, and general species assemblages are similar. However, distinct regional differences occur in environmental conditions, particularly with water temperature and nutrient availability. There is considerable variation in the types and strengths of human activities among regions. The impacts of coastal development are prevalent in all regions, while other impacts are of concern for specific regions, e.g., nutrient loading in the Atlantic and impacts from the logging industry in the Pacific. In addition, climate change represents a growing threat to eelgrass meadows. We review current management and conservation efforts and discuss the implications of observed differences from coast to coast to coast. - OPEN ACCESS
- Jannie F. Linnebjerg,
- Julia E. Baak,
- Tom Barry,
- Maria V. Gavrilo,
- Mark L. Mallory,
- Flemming R. Merkel,
- Courtney Price,
- Jakob Strand,
- Tony R. Walker, and
- Jennifer F. Provencher
Marine plastic is a ubiquitous environmental problem that can have an impact on a variety of marine biota, such as seabirds, making it an important concern for scientists and policy makers. Although research on plastic ingestion by seabirds is increasing, few studies have examined policies and long-term monitoring programs to reduce marine plastic in the Arctic. This paper provides a review of international, national, and regional policies and long-term monitoring programs that address marine plastic in relation to seabirds in the Arctic countries: Canada, the Kingdom of Denmark (Greenland and the Faroe Islands), Finland, Iceland, Norway, the Russian Federation, Sweden, and the United States of America. Results show that a broad range of international, national, regional and local policies address marine debris, specifically through waste management and the prevention of pollution from ships. However, few policies directly address seabirds and other marine biota. Further, policies are implemented inconsistently across regions, making it difficult to enforce and monitor the efficacy of these policies given the long-range transport of plastic pollution globally. To reduce marine plastic pollution in the Arctic environment, pan-Arctic and international collaboration is needed to implement standardized policies and long-term monitoring programs for marine plastic in the Arctic and worldwide. - OPEN ACCESS
The value of paleolimnology in reconstructing and managing ecosystem vulnerability: a systematic map
Vulnerability can measure an ecosystem’s susceptibility to change as a result of pressure or disturbance, but can be difficult to quantify. Reconstructions of past climate using paleolimnological methods can create a baseline to calibrate future projections of vulnerability, which can improve ecosystem management and conservation plans. Here, we conduct a systematic map to analyze the range and extent that paleolimnological published studies incorporated the concept of vulnerability. Additional themes of monitoring, management, conservation, restoration, or ecological integrity were also included. A total of 52 relevant unique articles were found, a majority of which were conducted in Europe or North America since 2011. Common themes identified included management and adaptation, with the latter heavily focussed on climate change or disturbance. From this, we can infer that the use of paleolimnology to discuss the concept of vulnerability is an emerging field. We argue that paleolimnology plays a valid role in the reconstruction of ecosystem vulnerability due to its capacity to broaden the scope of long-term monitoring, as well as its potential to help establish management and restoration plans. The use of paleolimnology in vulnerability analysis will provide a clearer lens of changes over time; therefore, it should be frequently implemented as a tool for vulnerability assessment. - OPEN ACCESSFederal and provincial governments of Canada recently signed onto a Pan-Canadian Approach to Transforming Species at Risk Conservation. The approach is based on collaboration among jurisdictions and stakeholders to enhance multiple species and ecosystem-based conservation in selected biodiversity hot spots. In this review paper, we focus on one of the biodiversity hot spots—the South of the Divide area in the province of Saskatchewan—to propose appropriate mechanisms to incentivize stewardship on agricultural Crown lands. Through a focused review and synthesis of empirical studies, we propose a range of policy instruments and incentives that can help deliver multi-species at risk conservation on Crown agricultural lands in Saskatchewan. We outline a range of policy instruments and incentives that are relevant to conservation on Crown agricultural lands and argue that a portfolio of options will have the greatest social acceptability. More germane is the need to foster collaboration between the government of Saskatchewan, other provincial/territorial governments, and the federal government, nongovernmental organizations, and land managers. Such collaboration is critical for enhanced decision-making and institutional change that reflects the urgent call for creating awareness of species at risk policies, building trust, and leveraging the local knowledge of land managers for conservation.
- OPEN ACCESSA central contention of this paper is that conservation strategies are failing because they have become increasingly integrated into, and share the assumptions of, the structures of capitalism. As a result, conservation is becoming a strategic specialty within capitalism, rather than an ethical challenge to its basic assumptions. The paper examines this integration by analysing the way Hardin’s argument in the “tragedy of the commons” metaphor was taken up by policy makers in Canada’s East Coast fishery and a case is made that, as seen in the case of the fishery, this strategic integration limited the analytical capability of conservation to highlight the causes of environmental degradation. The critical literature on Hardin’s model points to the failure to recognize the importance of social relations and local institutional arrangements in combatting environmental failure. This paper contributes to the importance of “the social” in conservation debates by emphasizing Polanyi’s contrasting definitions of formal and substantive economics and the way they relate to contrasting conceptions of tragedy, as set out by Hardin (formal tragedy from above) and Goldmann’s conception of a historically specific tragedy that can be described as substantive tragedy from below. The analytical failure associated with Hardin’s metaphor can serve as a cautionary tale for current strategic and specific conservation strategies that tend to downplay the importance of ethical and social issues.
- OPEN ACCESS
- Kate Sherren,
- Kirsten Ellis,
- Julia A. Guimond,
- Barret Kurylyk,
- Nicole LeRoux,
- Jeremy Lundholm,
- Mark L. Mallory,
- Danika van Proosdij,
- Allison K. Walker,
- Tony M. Bowron,
- John Brazner,
- Lisa Kellman,
- B. L. Turner II, and
- Emily Wells
We review what is known about ecosystem service (ES) delivery from agricultural dykelands and tidal wetlands around the dynamic Bay of Fundy in the face of climate change and sea-level rise, at the outset of the national NSERC ResNet project. Agricultural dykelands are areas of drained tidal wetland that have been converted to agricultural lands and protected using dykes and aboiteaux (one-way drains or sluices), first introduced by early French settlers (Acadians). Today, Nova Scotia’s 242 km system of dykes protect 17,364 ha of increasingly diverse land uses—including residential, industrial, and commercial uses as well as significant tourism, recreational, and cultural amenities—and is undergoing system modernization and adaptation. Different ES are provided by drained and undrained landscapes such as agriculture from dykelands and regulating services from wetlands, but more complex dynamics exist when beneficiaries are differentiated. This review reveals many knowledge gaps about ES delivery and dynamics, including around net greenhouse gas implications, storm protection, water quality, fish stocks, pollination processes, sense of place, and aesthetics, some of which may reveal shared ES or synergies instead of trade-offs. We emphasize the need to be open to adapting ES concepts and categorizations to fully understand Indigenous implications of these land use decisions. - OPEN ACCESSNegative biodiversity trends are evident in Canada, in spite of its ecological and economic wealth and high governance capacity. We examined the current implementation of Canada’s national biodiversity strategy—the planning instrument to the United Nations Convention on Biological Diversity—through its existing legal framework. We did this by evaluating biodiversity-related strategies and plans and 201 federal, provincial, and territorial laws. We found that while most jurisdictions claim dedicated attention to biodiversity, there is little evidence of an integrated approach within provinces and territories and across the federation. Biodiversity conservation led by governments underscores the need for considerations of species and ecosystem services to be mainstreamed into economic and development decision-making. Key challenges to this include Canada’s unusual degree of decentralized constitutionally ascribed authority over natural assets and its historical and continued economic emphasis on extraction of natural resources—a conflict of interest for jurisdictions. Transitioning to scale-appropriate planning and integrated decision-making that can address the pressures and causes of biodiversity conservation in Canada will require transformative change. Law reform, while necessary, will not succeed unless accompanied by a whole-of-government approach, a shift to a bio-centric mindset, innovative governance (particularly Indigenous-led conservation), and federal leadership with strong levels of financial investment.
- OPEN ACCESSWildlife is declining around the world. Many developed nations have enacted legislation on endangered species protection and provide funding for wildlife recovery. Protecting endangered species is also supported by the public and judiciary. Yet, despite what appear as enabling conditions, wild species continue to decline. Our paper explores pathways to endangered species recovery by analyzing the barriers that have been identified in Canada, the United States, and Australia. We summarize these findings based on Canada’s Species at Risk Conservation Cycle (assessment, protection, recovery planning, implementation, and monitoring and evaluation) and then identify 10 “bridges” that could help overcome these barriers and bend our current trajectory of wildlife loss to recovery. These bridges include ecosystem approaches to recovery, building capacity for community co-governance, linking wildlife recovery to ecosystem services, and improving our storytelling about the loss and recovery of wildlife. The focus of our conclusions is the Canadian setting, but our findings can be applied in other national and subnational settings to reverse the decline of wildlife and halt extinction.
- OPEN ACCESSIntroduction: Early childhood overweight and obesity, as a result of unhealthy dietary habits and sedentary life, is a growing global public health concern, particularly in Canada. There are limited data on how socioeconomic factors influence dietary habits of young children living in developed countries. Methods: We conducted a scoping review to examine the existing literature on how socioeconomic settings influence food consumption patterns of children 2–5 years old in developed countries. The inclusion criteria were relevant articles in the English language between 2007 and 2019. Results: From the initial 1854 articles, only 12 articles from Europe, Canada, and the United States met the inclusion criteria. There are differences in eating patterns of preschool-aged children based on parental education, whereas income level did not have a clear influence on dietary patterns. The existing studies suffer from a variety of limitations that limit a cohesive conclusion. Conclusion: Studies with children 2–5 years old are scarce. Parental education seems to influence the dietary habits of young children, whereas the role of income is not clear. There is a need for further high-quality research, preferably longitudinal studies, to inform health promotion initiatives and preventive strategies to facilitate healthy growth and development in young children.