Beluga whales play a critical role in the subsistence economies and cultural heritage of Indigenous communities across the Arctic, yet the effects of Indigenous hunting on beluga whales remain unknown. Here, we integrate paleogenomics, genetic simulations, and stable δ13C and δ15N isotope analysis to investigate 700 y of beluga subsistence hunting in the Mackenzie Delta area of northwestern Canada. Genetic identification of the zooarchaeological remains, which is based on radiocarbon dating, span three time periods (1290 to 1440 CE; 1450 to 1650 CE; 1800 to 1870 CE), indicates shifts across time in the sex ratio of the harvested belugas. The equal number of females and males harvested in 1450 to 1650 CE versus more males harvested in the two other time periods may reflect changes in hunting practices or temporal shifts in beluga availability. We find temporal shifts and sex-based differences in δ13C of the harvested belugas across time, suggesting historical adaptability in the foraging ecology of the whales. We uncovered distinct mitochondrial diversity unique to the Mackenzie Delta belugas, but found no changes in nuclear genomic diversity nor any substructuring across time. Our findings indicate the genomic stability and continuity of the Mackenzie Delta beluga population across the 700 y surveyed, indicating the impact of Inuvialuit subsistence harvests on the genetic diversity of contemporary beluga individuals has been negligible.

The development and dissemination of health messaging is a critical component of reducing health disparities. Participants (n = 87) from a human biomonitoring study in six Dene communities responded to a survey about health communication regarding contaminants. The survey included questions on awareness of health messages and risk perceptions related to country foods and contaminants. The vast majority of participants reported eating country foods (99%) and heard that country foods had beneficial nutrients (90%). Seventy per cent of respondents had heard or seen messages about fish with high levels of mercury, and 60% had concerns about the safety or quality of country foods they consumed. Respondents who reported decreasing the number of fish they ate since hearing the messages about fish and mercury had lower (p = 0.04) mercury concentration in hair, compared to those who had not heard the messages. However, no differences in hair mercury were observed for respondents who reported to have changed their fishing location, chosen smaller fish or eaten less predatory fish since hearing the messages. Results indicate the need to examine reasons for self-reported behaviour changes, in addition to awareness. The conclusions of this study can inform the development of messaging and risk management decisions about contaminants within Indigenous populations.

OBJECTIVE: This paper outlines the engagement process that was used to develop the Northwest Territories Alcohol Strategy, based on a recommendation by the developers of the Canadian Alcohol Policy Evaluation report, and how this informed the final actions in the strategy.
METHODS: A literature review, four targeted engagement activities, and iterative validation by advisory groups and community and Indigenous leadership were used to evaluate, modify, or reject the original recommendations and develop the final actions that were included in the NWT Alcohol Strategy.
RESULTS: There are fourteen original CAPE recommendations, four of which had already been implemented in the Northwest Territories before the development of the strategy. On completion of the process, four recommendations had already been implemented in the NWT. Two recommendations were included in the strategy without changes, two were adapted for use in the strategy, and six were not included. One stand-alone alcohol policy measure was created and included.
CONCLUSIONS: Alcohol strategies are dependent on a variety of contextual factors. Developers need to take into consideration the unique geography, political climate, and cultural context of the region for which they are being developed, in order to produce a strategy that is applicable, acceptable, and feasible at the community level.
RéSUMé: OBJECTIFS: Cet article présente la méthodologie de projet utilisée pour élaborer la Stratégie sur l’alcool des Territoires du Nord-Ouest (TNO), basée sur un ensemble de recommandations formulées par les auteurs du rapport d’évaluation des politiques canadiennes sur l’alcool (CAPE). Il présente également les orientations et actions finales de la stratégie. MéTHODES: Une analyse documentaire, un dispositif de concertation multi-canal, ainsi qu’une validation itérative par des groupes consultatifs, des représentants des populations locales et autochtones ont été utilisées pour évaluer, modifier ou rejeter les recommandations originales et élaborer les actions finales à inclure dans la Stratégie sur l’alcool des TNO. RéSULTATS: Le CAPE comprend quatorze recommandations d’origine, dont quatre étaient déjà en vigueur dans les TNO avant l’élaboration de la stratégie. À l’issue du processus, quatre recommandations avaient déjà été mises en œuvre dans les TNO. Deux recommandations ont été incluses dans la stratégie sans modifications, deux ont été adaptées pour être mises en œuvre dans la stratégie, et six n’ont pas été incluses. En outre, une politique indépendante de quantification a été créée et incluse. CONCLUSION: Les stratégies en matière d’alcool dépendent de divers facteurs contextuels. Les concepteurs doivent tenir compte de la singularité géographique, du climat politique et du contexte culturel de la région pour laquelle elles sont élaborées, afin de rendre la stratégie applicable, acceptable et réalisable pour la population.

Nature prescription programs have become more common within healthcare settings. Despite the health benefits of being in nature, nature prescriptions within the context of Indigenous Peoples have received little attention. We therefore sought to answer the following question: What are circumpolar-based physicians\' and Indigenous Elders\' views on nature prescribing in the Northwest Territories, Canada? We carried out thirteen semi-structured interviews with physicians between May 2022 and March 2023, and one sharing circle with Indigenous Elders in February 2023. Separate reflexive thematic analysis was carried out to generate key themes through inductive coding of the data. The main themes identified from the physician interviews included the importance of cultural context; barriers with nature prescriptions in the region; and the potential for nature prescriptions in the North. Reflections shared by the Elders included the need for things to be done in the right way; the sentiment that the Land is not just an experience but a way of life; and the importance of traditional food as a connection with Nature. With expanding nature prescription programs, key considerations are needed when serving Indigenous communities. Further investigation is warranted to ensure that nature prescriptions are appropriate within a given context, are inclusive of supporting Land-based approaches to health and wellbeing, and are considered within the context of Indigenous self-determination.

The underwater soundscape, a habitat component for Arctic marine mammals, is shifting. We examined the drivers of the underwater soundscape at three sites in the Amundsen Gulf, Northwest Territories, Canada from 2018 to 2019 and estimated the contribution of abiotic and biotic sources between 20 Hz and 24 kHz. Higher wind speeds and the presence of bearded seal (Erignathus barbatus) vocalizations led to increased SPL (0.41 dB/km/h and 3.87 dB, respectively), while higher ice concentration and air temperature led to decreased SPL (-0.39 dB/% and - 0.096 dB/°C, respectively). Other marine mammals did not significantly impact the ambient soundscape. The presence of vessel traffic led to increased SPLs (12.37 dB) but was quieter at distances farther from the recorder (-2.57 dB/log m). The presence of high frequency and broadband signals produced by ice led to increased SPLs (7.60 dB and 10.16 dB, respectively).

OBJECTIVE: The Cannabis Policy Study in the Territories (CPST) is an annual repeat cross-sectional study aiming to evaluate the impacts of cannabis legalization in the Canadian territories (Yukon, Northwest Territories, and Nunavut), where there is a paucity of data on cannabis use. This current study\'s objective was to describe the 2022 CPST, including methods, population prevalence estimates of cannabis use, and legal cannabis sources and perceptions in the territories.
METHODS: The 2022 CPST includes 2462 respondents (aged 16 +) residing in the territories who either use or do not use cannabis. Respondents were recruited through mail-push-to-web invitations sent via licensed mailing lists, sampling from a near census of households in the territories. Population-weighted indicators of cannabis use are described.
RESULTS: Past 12-month cannabis use was self-reported by 46.1%, and 21.8% self-reported daily/almost daily use. The most commonly used product types among past 12-month consumers were dried flower (73.4%), edibles (59.0%), and vape oils (35.7%). On average, 74.8% of cannabis products used in the past 12 months were from legal sources, though legal sourcing varied by product type (54.4‒92.2%). Cannabis consumers reported favourable perceptions of legal compared to illegal cannabis products regarding quality, convenience, and safety, but a lesser extent for price.
CONCLUSIONS: Cannabis use is highly prevalent in the territories, particularly daily/almost daily use, and legal market penetration is high despite region remoteness. Following cannabis legalization, monitoring cannabis use prevalence and patterns in remote regions is important for informing the development of harm reduction and prevention initiatives that consider the unique needs of these regions.
RéSUMé: OBJECTIF: L’Étude sur les politiques relatives au cannabis dans les territoires (Cannabis Policy Study in the Territories ‒ CPST) est une étude transversale annuelle qui a pour but d’évaluer les répercussions de la légalisation du cannabis dans les territoires canadiens (Yukon, Territoires du Nord-Ouest et Nunavut), où il existe peu de données sur la consommation de cannabis. L’objectif de la présente étude était de décrire l’étude CPST de 2022, y compris la méthodologie, les estimations de la prévalence de la consommation de cannabis au sein de la population, ainsi que les sources et les perceptions du cannabis vendu légalement dans les territoires. MéTHODES: L’étude CPST menée en 2022 a consisté à interroger 2 462 personnes âgées de 16 ans et plus qui résident dans les territoires. Les répondants incluent des personnes qui consomment du cannabis et d’autres qui n’en consomment pas. Les répondants ont été recrutés au moyen d’invitations envoyées par la poste à partir de listes d’envoi autorisées. Les échantillons ont été effectués à partir d’un quasi-recensement des ménages qui résident dans les territoires. Les indicateurs pondérés en population de la consommation de cannabis sont décrits. RéSULTATS: Au cours des 12 derniers mois, le pourcentage d’autodéclarations de consommation de cannabis était de 46,1 %, et 21,8 % des répondants ont déclaré consommer quotidiennement ou presque. Les produits les plus couramment utilisés par les consommateurs au cours des 12 derniers mois étaient les fleurs séchées (73,4 %), les produits comestibles (59,0 %) et les huiles de vapotage (35,7 %). En moyenne, 74,8 % des produits de cannabis consommés au cours des 12 derniers mois provenaient de sources légales, bien que l’approvisionnement légal varie selon le type de produit (de 54,4 % à 92,2 %). Les consommateurs de cannabis ont déclaré percevoir favorablement les produits de cannabis vendus légalement comparativement aux produits vendus illégalement en ce qui a trait à la qualité, à la commodité et à la sécurité, mais dans une moindre mesure en matière de prix. CONCLUSION: La consommation de cannabis est très répandue dans les territoires, en particulier la consommation quotidienne ou presque quotidienne. De plus, la pénétration du marché des produits vendus légalement est élevée malgré l’éloignement des régions. À la suite de la légalisation du cannabis, la surveillance de la prévalence et des tendances de consommation du cannabis dans les régions éloignées fournit des renseignements importants pour l’élaboration d’initiatives de réduction des méfaits et de prévention qui tiennent compte des besoins uniques de ces régions.

Land use and climate changes are driving significant shifts in the magnitude and persistence of dryland stream surface flows. The impact of these shifts on ecological functioning is largely unknown, particularly where streams have become wetter rather than drier. This study investigated relationships between hydrologic regime (including surface water persistence, differences in groundwater depth and altered flooding dynamics) with plant traits and riverine vegetation functional composition. Our study system was a previously ephemeral creek in semi-arid northwest Australia that has received groundwater discharge from nearby mining operations for >15 years; surface flows are now persistent for ∼27 km downstream of the discharge point. We aimed to (i) identify plant functional groups (FGs) associated with the creek and adjacent floodplain; and (ii) assess their distribution across hydrological gradients to predict shifts in ecological functioning in response to changing flow regimes. Seven FGs were identified using hierarchical clustering of 40 woody perennial plant species based on morphometric, phenological and physiologic traits. We then investigated how FG abundance (projective foliar cover), functional composition, and functional and taxonomic richness varied along a 14 km gradient from persistent to ephemeral flows, varying groundwater depths, and distances from the stream channel. Dominant FGs were (i) drought avoidant mesic trees that are fluvial stress tolerant, or (ii) drought tolerant xeric tall shrubs that are fluvial stress intolerant. The drought avoidant mesic tree FG was associated with shallow groundwater but exhibited lower cover in riparian areas closer to the discharge (persistent surface flows). However, there were more FGs and higher species richness closer to the discharge point, particularly on the floodplain. Our findings demonstrate that quantifying FG distribution and diversity is a significant step in both assessing the impacts of mine water discharge on riverine ecosystems and for planning for post-mining restoration.

Ediacara-type macrofossils appear as early as ~575 Ma in deep-water facies of the Drook Formation of the Avalon Peninsula, Newfoundland, and the Nadaleen Formation of Yukon and Northwest Territories, Canada. Our ability to assess whether a deep-water origination of the Ediacara biota is a genuine reflection of evolutionary succession, an artifact of an incomplete stratigraphic record, or a bathymetrically controlled biotope is limited by a lack of geochronological constraints and detailed shelf-to-slope transects of Ediacaran continental margins. The Ediacaran Rackla Group of the Wernecke Mountains, NW Canada, represents an ideal shelf-to-slope depositional system to understand the spatiotemporal and environmental context of Ediacara-type organisms\' stratigraphic occurrence. New sedimentological and paleontological data presented herein from the Wernecke Mountains establish a stratigraphic framework relating shelfal strata in the Goz/Corn Creek area to lower slope deposits in the Nadaleen River area. We report new discoveries of numerous Aspidella hold-fast discs, indicative of frondose Ediacara organisms, from deep-water slope deposits of the Nadaleen Formation stratigraphically below the Shuram carbon isotope excursion (CIE) in the Nadaleen River area. Such fossils are notably absent in coeval shallow-water strata in the Goz/Corn Creek region despite appropriate facies for potential preservation. The presence of pre-Shuram CIE Ediacara-type fossils occurring only in deep-water facies within a basin that has equivalent well-preserved shallow-water facies provides the first stratigraphic paleobiological support for a deep-water origination of the Ediacara biota. In contrast, new occurrences of Ediacara-type fossils (including juvenile fronds, Beltanelliformis, Aspidella, annulated tubes, and multiple ichnotaxa) are found above the Shuram CIE in both deep- and shallow-water deposits of the Blueflower Formation. Given existing age constraints on the Shuram CIE, it appears that Ediacaran organisms may have originated in the deeper ocean and lived there for up to ~15 million years before migrating into shelfal environments in the terminal Ediacaran. This indicates unique ecophysiological constraints likely shaped the initial habitat preference and later environmental expansion of the Ediacara biota.

Polycyclic aromatic compounds (PACs) - a large group of organic chemicals naturally present in petroleum deposits (i.e., petrogenic) or released into the environment by incomplete combustion of organic materials (i.e., pyrogenic) - represent a potential risk to the health of aquatic ecosystems. In high latitude freshwater ecosystems, concentrations of PACs may be increasing, yet there are limited studies in such systems to assess change and to understand threats. Using 10 years of contemporary data from passive samplers deployed across five regions (n = 43 sites) in the Mackenzie River Basin, we (i) describe baseline levels of PACs, (ii) assess spatiotemporal patterns, and (iii) evaluate the extent to which environmental factors (fire, snowmelt, and proximity to oil infrastructure) influence concentrations in this system. Measured concentrations were low, relative to those in more southern systems, with mixtures primarily being dominated by non-alkylated, low molecular weight compounds. Concentrations were spatially consistent, except for two sites near Norman Wells (an area of active oil extraction) with increased levels. Similarly, observed annual variation was minimal, with 2014 having generally higher levels of PACs. We did not detect effects of fire, snowmelt, or oil infrastructure on concentrations. Taken together, our findings suggest that PACs in the Mackenzie River are currently at low levels and are primarily petrogenic in origin. They further indicate that ongoing monitoring and testing of environmental drivers (especially at finer spatial scales) are needed to better predict how ecosystem change will influence PAC levels in the basin and in other northern systems.

Indigenous and Northern women in Canada experience high rates of intimate partner violence (IPV), and this is particularly true in the Northwest Territories (NWT). Adolescents are also at increased risk of IPV, which has far-reaching, lifelong effects. Indigenous youth are particularly vulnerable to IPV due to ongoing effects of intergenerational trauma caused by colonialism, racism and residential school legacies. We explored attitudes towards IPV and the healthy relationship knowledge, skills, and experiences among participants of Fostering Open eXpression among Youth (FOXY) and Strength, Masculinities, and Sexual Health (SMASH) Peer Leader Retreats in the NWT. Multi-method approaches included quantitative surveys youth completed before and immediately following retreats. Quantitative analysis from retreats (2018-2021) included 240 participants aged 12-19 (mean age 14.5) who reported ever having an intimate partner. Most were from the FOXY program (64.2%), Indigenous (69.6%) and heterosexual (66.4%). Qualitative methods included Focus Group Discussions (FGD) (n = 69) conducted with peer leaders and apprentices (n = 311) and youth and adult staff (n = 14 FGDs, n = 165 participants). We thematically analysed FGDs to explore healthy relationship knowledge and skills, alongside paired t-tests to examine pre/post retreat changes in attitudes towards IPV. Qualitative findings suggest that leadership and embodied learning were effective in equipping youth with violence prevention and healthy relationship skills. While young women were committed to sharing knowledge and skills about healthy relationships in their communities, young men resonated with values of respect and appreciated support to identify and express emotions. Participants across programmes demonstrated their belief that healthy intimate relationships have communal, relational and intergenerational benefits. Quantitatively, we found a statistically significant reduction in attitudes accepting of IPV among young women, but no changes were noted among young men. Findings contribute to emergent evidence on strengths-based, culturally-responsive IPV prevention programming. Components of effective IPV prevention programming with young men merit further exploration.