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- OPEN ACCESS
- A.K. Menzies,
- E. Bowles,
- M. Gallant,
- H. Patterson,
- C. Kozmik,
- S. Chiblow,
- D. McGregor,
- A. Ford, and
- J.N. Popp
Climate change disproportionately affects Indigenous Peoples because of strong connections between environmental, cultural, and spiritual well-being. While much of the global discourse surrounding climate change is founded in Western science, the holistic, place-based knowledge of Indigenous Peoples offers a complementary way of understanding and mitigating climate change impacts. The goal of this research was to elevate Anishinaabe concerns, observations, and perspectives about climate change impacts and future research needs. We organized a workshop called “Connecting Guardians in a Changing World” where participants shared concerns about animal and plant life cycles, water cycles and water quality, and impacts to ways of life, including reduced capacity to perform cultural practices and erosion of their knowledge. Participants highlighted the challenge of prioritizing a single impact of climate change, emphasizing that impacts to the environment and ways of life are interconnected. Participants also expressed the need for research and policy that move beyond interdisciplinarity to include intercultural philosophy and research that better reflects Indigenous worldviews and incorporates Indigenous methodologies. Moving forward, meaningful partnerships and opportunities for knowledge sharing should be prioritized in climate change discourse to ensure solutions are generated together, with all of the tools and knowledge available. - OPEN ACCESS
- Sabine Dietz,
- Karen F. Beazley,
- Christopher J. Lemieux,
- Colleen St. Clair,
- Laura Coristine,
- Eric Higgs,
- Risa Smith,
- Marlow Pellatt,
- Carolynn Beaty,
- Edward Cheskey,
- Steven J. Cooke,
- Lindsay Crawford,
- Rob Davis,
- Graham Forbes,
- Fawziah (ZuZu) Gadallah,
- Peter Kendall,
- Nick Mandrak,
- Faisal Moola,
- Scott Parker,
- James Quayle,
- Justina C. Ray,
- Karen Richardson,
- Kevin Smith,
- James Snider,
- John P. Smol,
- William J Sutherland,
- Andre Vallillee,
- Lori White, and
- Alison Woodley
Horizon scanning is increasingly used in conservation to systematically explore emerging policy and management issues. We present the results of a horizon scan of issues likely to impact management of Canadian protected and conserved areas over the next 5–10 years. Eighty-eight individuals participated, representing a broad community of academics, government and nongovernment organizations, and foundations, including policymakers and managers of protected and conserved areas. This community initially identified 187 issues, which were subsequently triaged to 15 horizon issues by a group of 33 experts using a modified Delphi technique. Results were organized under four broad categories: (i) emerging effects of climate change in protected and conserved areas design, planning, and management (i.e., large-scale ecosystem changes, species translocation, fire regimes, ecological integrity, and snow patterns); (ii) Indigenous governance and knowledge systems (i.e., Indigenous governance and Indigenous knowledge and Western science); (iii) integrated conservation approaches across landscapes and seascapes (i.e., connectivity conservation, integrating ecosystem values and services, freshwater planning); and (iv) early responses to emerging cumulative, underestimated, and novel threats (i.e., management of cumulative impacts, declining insect biomass, increasing anthropogenic noise, synthetic biology). Overall, the scan identified several emerging issues that require immediate attention to effectively reduce threats, respond to opportunities, and enhance preparedness and capacity to react. - OPEN ACCESSThis article explores the “wholistic” as a central concept of “the good life” as expressed by the Bnkis, Tayal Indigenous Elders, who participated in the Day Club, Tayal territory of Northern Taiwan. In particular, we analyze the stories of care experienced by the Bnkis from the standpoint of wholistic relationships. The stories were recorded primarily between 2015 and 2018. In this analysis we used a critical qualitative design approach, privileging Tayal epistemology and informed by Tayal hermeneutics. Our results show that the concept of well-being for the Bnkis is closely linked to their relationships with people and with the land and spirituality. Through these relationships, the continuation of Gaga—Tayal law and cosmology—has been adapted organically over time. We argue that Gaga is central to Tayal Elder/Bnkis care and essential to Bnkis’ well-being. We propose that the concept of wholistic relationships embedded in the Tayal law of Gaga is vital in developing an elderly care system that is genuinely culturally relevant in the long run. This research demonstrates how the wholistic concept can improve human health and well-being, and ultimately provides an implication to sustainable development.
- OPEN ACCESSIn response to colonial research paradigms that have subjugated Indigenous Peoples, knowledges, lands, and waters, Indigenous research methodologies have emerged to center Indigenous visions and voices in research practice. Here, we employ such methodologies to improve collective understanding of the state and future of wild Pacific salmon (Oncorhynchus spp.) and fish–people–place relationships across British Columbia’s three largest salmon-producing rivers: the Fraser, Skeena, and Nass. Through partnerships with 18 communities of “Salmon People” and semi-structured interviews with 48 knowledge holders (i.e., Elders), we learned that, on average, Elders spent more than half of a century actively engaged in salmon fishing and processing. Modern salmon catches are reported to be approximately one-sixth of what they were estimated to be five to seven decades ago, and the top five threats to salmon identified by Elders included (i) aquaculture, (ii) climate change, (iii) contaminants, (iv) industrial development, and (v) infectious diseases. Threat priorities varied regionally, reflecting distinct lived experiences and regional variation in the prevalence and impact of different threats. Elders perceived threats to salmon equally as threats to aquatic health and human well-being, with evidence that the relationships between people and water, and salmon and people, are being profoundly transformed.
- OPEN ACCESSPost-transcriptional regulators such as microRNAs are emerging as conserved regulators of innate antiviral immunity in vertebrates, yet their roles in amphibian antiviral responses remain uncharacterized. We profiled changes in microRNA expressions in the Xenopus laevis skin epithelial-like cell line Xela DS2 in response to poly(I:C)—an analogue of viral double-stranded RNA and inducer of type I interferons—or frog virus 3 (FV3), an immunoevasive virus associated with amphibian mortality events. Small RNA libraries generated from untreated, poly(I:C)-treated, and FV3-infected cells were sequenced. We detected 136 known X. laevis microRNAs and discovered 133 novel X. laevis microRNAs. Sixty-five microRNAs were differentially expressed in response to poly(I:C), many of which were predicted to target regulators of antiviral pathways such as cGAS-STING, RIG-I/MDA-5, TLR signaling, and type I interferon signaling, as well as products of these pathways (NF-ĸB-induced and interferon-stimulated genes). In contrast, only 49 microRNAs were altered by FV3 infection, fewer of which were predicted to interact with antiviral pathways. Interestingly, poly(I:C) treatment or FV3 infection downregulated transcripts encoding factors of the host microRNA biogenesis pathway. Our study is the first to suggest that host microRNAs regulate innate antiviral immunity in frogs and sheds light on microRNA-mediated mechanisms of immunoevasion by FV3.
- OPEN ACCESS
- Chief Adam Dick (Kwaxsistalla Wathl’thla),
- Daisy Sewid-Smith (Mayanilth),
- Kim Recalma-Clutesi (Oqwilowgwa),
- Douglas Deur (Moxmowisa), and
- N.J. Turner (Galitsimġa)
Indigenous Peoples’ lives, cultures, and values are defined largely by their long-term relationships with the lands, waters, and lifeforms of their territories. Their stories, names, ceremonies, and connections with the plants and animals on which they have depended over countless generations are cornerstones of their knowledge systems, systems of governance and decision-making, traditions of intergenerational knowledge transmission, and values and responsibilities associated with natural and human domains alike. For First Nations of North America’s Northwest Coast, as for many other Indigenous Peoples, the arrival of European newcomers disrupted both the natural world and associated cultural practices in interconnected ways. The industrial exploitation of lands and resources had wide-ranging effects: traditional land and resource appropriation; impacts on culturally significant habitats by industrial-scale fishing, logging, and mining; and discrimination and marginalization contributing to resource alienation. This paper documents some experiences of Kwakwaka’wakw and other Coastal First Nations in coping with the cultural effects of environmental loss. It highlights their concern for the ecological integrity of lands and waters formerly under their stewardship but reshaped by non-Native extractive economies, and describes how these losses have affected the cultural, social, and physical health of Kwakwaka’wakw peoples up to the present time. - OPEN ACCESSBetween 1962 and 1969, 10 tonnes of mercury were discharged from a chlor-alkali plant in Dryden, Ontario, to the English–Wabigoon River. Present-day fish mercury concentrations are amongst the highest recorded in Canada. In 2017, the Grassy Narrows Science Team found no evidence of ongoing discharges from the plant site to the river water, even though large quantities of mercury remain at the site. Instead, our data suggest that ongoing erosion of high mercury particles by the river, as it meanders through contaminated floodplains, is responsible for present-day transport of mercury to Clay Lake and to Ball Lake, located 154 km downstream. In Clay Lake, surface sediment total mercury concentrations and inflow water concentrations are still about 15 times above background (86 km downstream), and in Ball Lake mercury concentrations in sediments appeared to be still increasing. The remobilization of legacy inorganic mercury from riverbank erosion between Dryden and Clay Lake stimulates methyl mercury production there, in Clay Lake, and in Ball Lake. The large quantities of methyl mercury produced between Dryden and Clay Lake are mostly dissolved in water and are swept downstream, elevating concentrations in water and biota throughout the system. Several options for remediating the ongoing contamination are discussed.
- OPEN ACCESS
- Mylène Ratelle,
- Andrew Spring,
- Brian Douglas Laird,
- Leon Andrew,
- Deborah Simmons,
- Alexa Scully, and
- Kelly Skinner
Resource development and climate change are increasing concerns regarding safe water for Indigenous people in Canada. A research study was completed to characterize the consumption of water and beverages prepared with water and identify the perception of water consumption in Indigenous communities from the Northwest Territories and Yukon, Canada. As part of a larger research program, data for this study were available from a 24-hour recall dietary survey (n = 162), a health messages survey (n = 150), and an exposure factor survey (n = 63). A focus group was conducted with Elders in an on-the-land camp setting. The consumption of water-based beverages in winter was 0.9 L/day on average, mainly consisting of tea and coffee. Of the 81% of respondents who reported consuming water-based beverages in the previous 24 hours of the survey, 33% drank more bottled water than tap water. About 2% of respondents consumed water from the land (during the winter season). Chlorine smell was the main limiting factor reported to the consumption of tap water. Results from the focus group indicated that Indigenous knowledge might impact both the perception and consumption of water. These findings aim to support public health efforts to enable people to make water their drink of choice. - OPEN ACCESSForested vernal pools serve an integral role in the recruitment of amphibians in glaciated northeastern North America. In south-central Ontario, vernal pools exist in relatively unimpacted forest networks, but the amphibian communities face uncertain challenges from anthropogenic-induced climate change. We surveyed amphibian larvae and collected measurements of habitat characteristics from vernal pools to collect baseline information on amphibian community structure and species–habitat relationships. Amphibian communities were influenced by hydroperiod length and canopy openness, and the relative abundances of early breeding amphibians were affected by changes in the structure of vegetation communities within pools. Our study suggests that, even across moderate ranges of breeding habitat characteristics, the structure of amphibian communities is dynamic. With anthropogenic-induced climate change leading to more drought-prone summers, the conservation of intact forests that support diverse wetland assemblages will be a necessary component of future legislation.
- OPEN ACCESSThis paper reviews a century of Kwakwaka’wakw knowledge on ecological, climate, and social change. We trace the era of Indigenous governance (about the precolonial period), especially from about 1910 to the devastation of the flood in Dzawada’enuxw First Nation territory in Kingcome, British Columbia, in 2010. This time period has been chosen as the assessment period as this is the lifetime of the 10 Elders that we collaborated with to understand and position change during this tumultuous era. We call the results of this process “a century of knowledge”. Ecological, social, and climate change are positioned with scientific literature for potential divergence/convergence. Almost all aspects of the Kwakwaka’wakw home area have undergone large-scale changes including clear-cut forestry, salmon farms, climate change affecting species ranges, cultural impositions, and colonial processes working to destroy Indigenous governance. Despite these imposed changes, the communities emerge as survivors on their own terms, including using the traditional feast system known as the Potlatch to come to terms with the devastation of the 2010 flood and beyond.
- OPEN ACCESS
- Arthur L. Bass,
- Andrew W. Bateman,
- Brendan M. Connors,
- Benjamin A. Staton,
- Eric B. Rondeau,
- Gideon J. Mordecai,
- Amy K. Teffer,
- Karia H. Kaukinen,
- Shaorong Li,
- Amy M. Tabata,
- David A. Patterson,
- Scott G. Hinch, and
- Kristina M. Miller
Recent decades have seen an increased appreciation for the role infectious diseases can play in mass mortality events across a diversity of marine taxa. At the same time many Pacific salmon populations have declined in abundance as a result of reduced marine survival. However, few studies have explicitly considered the potential role pathogens could play in these declines. Using a multi-year dataset spanning 59 pathogen taxa in Chinook and Coho salmon sampled along the British Columbia coast, we carried out an exploratory analysis to quantify evidence for associations between pathogen prevalence and cohort survival and between pathogen load and body condition. While a variety of pathogens had moderate to strong negative correlations with body condition or survival for one host species in one season, we found that Tenacibaculum maritimum and Piscine orthoreovirus had consistently negative associations with body condition in both host species and seasons and were negatively associated with survival for Chinook salmon collected in the fall and winter. Our analyses, which offer the most comprehensive examination of associations between pathogen prevalence and Pacific salmon survival to date, suggest that pathogens in Pacific salmon warrant further attention, especially those whose distribution and abundance may be influenced by anthropogenic stressors. - OPEN ACCESS
- Shawn R. Craik,
- Rodger D. Titman,
- Anna M. Calvert,
- Gregory J. Robertson,
- Mark L. Mallory, and
- Sarah E. Gutowsky
The addition of eggs to a nest by a conspecific is known for approximately 250 bird species. Understanding the evolution of conspecific brood parasitism (CBP) requires assessment of fitness consequences to the egg recipient (host). We addressed host traits and the effects of CBP on future reproduction (i.e., annual survival) and hatching success of hosts by following the nesting of 206 red-breasted mergansers (Mergus serrator) for a colony in which an average of 41% of nests was parasitized annually. Each host was tracked for ≥2 seasons and up to seven seasons. The proportion of a host’s nesting attempts that was parasitized averaged 43% and varied considerably across individuals (range 0%–100%). Probability of parasitism, however, was not repeatable across a host’s nests. Rather, rates of CBP throughout a host’s lifetime increased with earlier dates of nest initiation. CBP had no effect on annual survival of a host. Hatching success throughout a host’s lifetime declined with a greater number of foreign eggs added to the individual’s nests. This study revealed that there may be measurable costs of CBP to lifetime reproductive success in red-breasted mergansers, although our observations suggest that costs to hosts are limited to the most heavily parasitized clutches. - OPEN ACCESS
- Ben R. Collison,
- Patrick A. Reid,
- Hannah Dvorski,
- Mauricio J. Lopez,
- Alana R. Westwood, and
- Nikki Skuce
In British Columbia (BC), Canada, there is increased attention on mines and their impacts on water resources. In BC, many proposed mines undergo provincial environmental assessment (EA), which predicts a mine’s risks and involves government oversight and public engagement. After approval, mines can apply for amendments that alter the project’s undertakings, including in ways that may harm water resources. We examined all amendment documents for mines undergoing provincial EA in BC from 2002 to 2020. Of the 23 approved mines, 15 (65%) requested a total of 49 amendments, of which 98% were approved. Most mines applied for their first amendment within 3 years of approval. We deemed 20 of the approved amendments (associated with 10 projects) likely to have negative impacts on water resources, including changes to effluent discharge, increased volume of water extraction, or degradation of fish habitat. Amendment applications and approval documents lacked specific, quantitative information to reinforce claims or decisions. We present the first known summary of EA amendments in any jurisdiction. Given that most mines in BC receive amendments, and many are related to water, we express concern that amendment processes increase risk to water resources without meeting standards of evidence and public scrutiny required by the regular EA process. - OPEN ACCESSCyanobacterial blooms and their toxigenic potential threaten freshwater resources worldwide. In Atlantic Canada, despite an increase of cyanobacterial blooms in the last decade, little is known about the toxigenic potential and the taxonomic affiliation of bloom-forming cyanobacteria. In this study, we employed polymerase chain reaction (PCR) and metagenomic approaches to assess the potential for cyanotoxin and other bioactive metabolite production in Harvey Lake (oligotrophic) and Washademoak Lake (mesotrophic) in New Brunswick, Canada, during summer and early fall months. The PCR survey detected the potential for microcystin (hepatotoxin) and anatoxin-a (neurotoxin) production in both lakes, despite a cyanobacterial bloom only being visible in Washademoak. Genus-specific PCR associated microcystin production potential with the presence of Microcystis in both lakes. The metagenomic strategy provided insight into temporal variations in the microbial communities of both lakes. It also permitted the recovery of a near-complete Microcystis aeruginosa genome with the genetic complement to produce microcystin and other bioactive metabolites such as piricyclamide, micropeptin/cyanopeptolin, and aeruginosin. Our approaches demonstrate the potential for production of a diverse complement of bioactive compounds and establish important baseline data for future studies of understudied lakes, which are frequently affected by cyanobacterial blooms.
- OPEN ACCESS
- Jaya Shanker Tedla,
- Devika Rani Sangadala,
- Ravi Shankar Reddy,
- Kumar Gular,
- Venkata Nagaraj Kakaraparthi, and
- Paul Silvian Samuel
Normative reference values for muscle strength are needed for muscle strength assessment and estimation of prognosis in lower extremity related neuromuscular disorders, as muscle strength influenced by anthropometric parameters and muscle strength itself affects balance. Normative reference values for muscle strength in the Saudi Arabian population is lacking in the literature. Hence, the current study aimed to establish normative reference values for lower extremity muscle strength and to correlate these values with anthropometric parameters and balance. Lower extremity muscle strength and balance were assessed by baseline hand-held dynamometer and by forward, lateral, and oblique direction reach tests in 421 young male adults between 21 and 23 years of age. The mean and standard deviation of lower extremity strength ranged from 43.83 ± 16.92 lb to 62.07 ± 10.74 lb. Body weight, body mass index, and oblique and lateral reach distances were correlated with some knee and ankle muscle strength values. Body weight, body mass index, and balance showed significant effect on lower extremity muscle strength. Furthermore, decreased muscle strength may impair balance; the current clinical practice should evaluate body weight, body mass index, and muscle strength during the assessment process. - OPEN ACCESSImpact assessment (IA) processes rely on the ability of assessment boards and their assessors to gather, synthesize, and interpret knowledge from a variety of sources, making IA a knowledge-based activity. IA boards in northern Canada operate in a context that prioritizes pluralism, where Indigenous knowledge is a key element of decision-making and the ability of practitioners to interact with knowledge—research capacity—affects process effectiveness, credibility, and legitimacy. Drawing on common principles from existing research capacity frameworks, we identify the dimensions of capacity most relevant to more fully realizing inclusive impact assessment processes. We then examine the Yukon Environmental and Socio-Economic Assessment Board (YESAB) as a specialized environmental governance organization with assessors whose research capacity directly impacts process outcomes. Results show that while common dimensions across knowledge-based disciplines, such as sufficient resources (e.g., financial support), are often addressed in the YESAB context, others unique to IA, like contextual understanding, require further examination. The interaction between individual and organizational research capacity is a complex balance between investing in individuals and investing in organizational supports. The proposed framework facilitates multi-scalar supports for individual assessors and assessment bodies alike to navigate balancing technical and value-driven knowledge in assessments.
- OPEN ACCESSOvergrazing of habitat-forming kelps by sea urchins is reshaping reef seascapes in many temperate regions. Loss of kelp, in particular as a food source, may alter individual consumer physiology, which in turn may impair their ability to respond to climate warming. Here, we measured the temperature dependence of absolute and mass-independent oxygen consumption (M˙O2) using two different exposure protocols (acute exposure and temperature “ramping”), as proxies of realized physiology, between green sea urchin (Strongylocentrotus droebachiensis) populations from neighbouring barren and kelp habitats. Sea urchins from kelp habitats consumed 8%–78% more oxygen than sea urchins from barrens (across the range of temperatures tested (4–32 °C)) and had higher maximum M˙O2 values (by 26%). This was in part because kelp urchins typically had greater body masses. However, higher mass-independent M˙O2 values of kelp urchins suggest metabolic plasticity in response to habitat per se. In addition, the M˙O2 of sea urchins from kelp habitats was less sensitive to increases in temperature. We conclude that sea urchins from barren and kelp habitats of comparable body mass represent different energetic units. This highlights that habitat type can drive population-level variation that may shape urchins activities and environmental impact. Such variation should be integrated into energy-based models.
- OPEN ACCESSThis research examines the potential challenges and opportunities for Mi’kmaq, the Indigenous peoples who have inhabited modern-day Nova Scotia and other areas of Eastern Canada for millennia, to play a greater role in marine protected area (MPA) governance in Canada. Given Canada’s marine conservation objectives of 30% by 2030, there is a growing need for decisions affecting the establishment of MPAs to respect Indigenous rights, values, and knowledge. Using the Eastern Shore Islands (ESI) in Nova Scotia, Canada, an area of interest for MPA establishment, as a case study, we conducted 17 semi-structured interviews with both Mi’kmaq and non-Mi’kmaq participants involved in the ESI consultation processes. We used content analysis to identify key themes that respondents perceived to be affecting Mi’kmaq involvement in the federal MPA governance processes. Barriers to overcome included those deemed to be systemic within the current decision-making processes; limited understanding of Mi’kmaq culture, governance, and rights; limited clarity of Mi’kmaq rights, particularly those resulting in fisheries conflicts; and limited capacity. Opportunities highlighted the importance of meaningful consultation and understanding of Indigenous worldviews as well as the need for alternative approaches to state-led/top-down governance to improve Mi’kmaq participation in MPA governance in Atlantic Canada.
- OPEN ACCESSCumulative human impact analysis is a promising management tool to estimate the impacts of stressors on ecosystems caused by multiple human activities. However, connecting cumulative impact scores to actual ecosystem change at appropriate spatial scales remains challenging. Here, we calculated cumulative effects (CE) scores for 187 seagrass beds in Atlantic Canada that accounts for both bay-scale and local-scale anthropogenic activities. We then developed a CE threshold to evaluate where degradation of seagrass beds from multiple human activities is more likely. Overall, the CE score was the best predictor of human impacts for seagrass beds. Locations with high watershed land alteration and nitrogen loading had the highest CE scores; however, we also identified seagrass beds with high CE scores in regions characterized by generally low levels of human activities. Forty-nine seagrass beds exceeded the CE threshold and, of these, 86% had CE scores that were influenced by three or more stressors that cumulatively amounted to a large score. This CE threshold approach can provide a simplified metric to identify areas where management of cumulative effects should be prioritized and further highlights the need to consider multiple human activities when assessing anthropogenic impacts to coastal habitats.
- OPEN ACCESS
- Linda C. Li,
- Alison M. Hoens,
- Linda Wilhelm,
- Vikram Bubber,
- Elliot PausJenssen,
- Annette McKinnon,
- Jenny Leese,
- Thalia Otamendi,
- Clayon B. Hamilton,
- Wasifa Zarin,
- Andrea C. Tricco, and
- for the SPOR Evidence Alliance
The Evidence Alliance (EA) is a Canada-wide multi-stakeholder organization providing national-level support in knowledge synthesis, clinical practice guidelines development, and knowledge translation. With a mandate to deliver the best available evidence to inform health policy and improve patient care, the EA involves patients and their caregivers in its governance, research priority setting and conduct, and capacity building. To reflect on the experiences of patient involvement in its first three years, the organization conducted a self-study with 17 actively involved patient partners. They answered the Patient Engagement in Research Scale 22-item short form (PEIRS-22) and open-ended questions. Of the 15 respondents, 12 were women with a mean age of 62.6 years (SD 10.1). The mean PEIRS-22 score was 82.1 (SD 15.9), indicating perceived meaningful engagement. Analysis of the free-text answers identified three themes: (i) communication: successes, changes, and improvements; (ii) a respectful and welcoming environment; and (iii) opportunities to learn and contribute. Patient partners noted the EA made genuine efforts to welcome them and value their contributions. They also identified a need for the organization to increase patient partner diversity. This self-study was perceived as rewarding as it provided a foundation for further growth in patient involvement within the organization.