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Potential impacts of climate-related decline of seafood harvest on nutritional status of coastal First Nations in British Columbia, Canada

BACKGROUND: Traditional food systems are under pressure from various stressors, including climate change which is projected to negatively alter the abundance of marine species harvested by coastal First Nations (FNs) in British Columbia (BC). OBJECTIVE: To model the potential impacts of the climate-...

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Autores principales: Marushka, Lesya, Kenny, Tiff-Annie, Batal, Malek, Cheung, William W. L., Fediuk, Karen, Golden, Christopher D., Salomon, Anne K., Sadik, Tonio, Weatherdon, Lauren V., Chan, Hing Man
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6392226/
https://www.ncbi.nlm.nih.gov/pubmed/30811408
http://dx.doi.org/10.1371/journal.pone.0211473
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author Marushka, Lesya
Kenny, Tiff-Annie
Batal, Malek
Cheung, William W. L.
Fediuk, Karen
Golden, Christopher D.
Salomon, Anne K.
Sadik, Tonio
Weatherdon, Lauren V.
Chan, Hing Man
author_facet Marushka, Lesya
Kenny, Tiff-Annie
Batal, Malek
Cheung, William W. L.
Fediuk, Karen
Golden, Christopher D.
Salomon, Anne K.
Sadik, Tonio
Weatherdon, Lauren V.
Chan, Hing Man
author_sort Marushka, Lesya
collection PubMed
description BACKGROUND: Traditional food systems are under pressure from various stressors, including climate change which is projected to negatively alter the abundance of marine species harvested by coastal First Nations (FNs) in British Columbia (BC). OBJECTIVE: To model the potential impacts of the climate-related declines in seafood production on the nutritional status of coastal BC FNs. In addition, we projected potential changes in nutrient intakes, under different scenarios of substitution where traditional seafood is replaced with alternative non-traditional foods. METHODS: The study design is a mixed-method approach that combines two datasets: projected scenarios of climate-related change on seafood catch potential for coastal BC FNs and data derived from the cross-sectional First Nations Food, Nutrition, and Environment Study. The consumption of seafood was estimated using a food frequency questionnaire among 356 FNs. The contribution of seafood consumption to protein, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), vitamins (A, B12, D, niacin), and minerals (zinc, selenium and iron) requirements was assessed using Dietary Reference Intakes (DRIs). RESULTS: Traditional seafood consumption provided daily recommendations of EPA+DHA (74–184%) and vitamin B12 (84–152%) and substantial levels of niacin (28–55%), selenium (29–55%), vitamin D (15–30%) and protein (14–30%). Projected climate change was estimated to reduce the intakes of essential nutrients by 21% and 31% under ‘strong mitigation’ (Representative Concentration Pathway, RCP2.6) and ‘business-as-usual’ (RCP8.5) climate change scenarios, respectively, by the year 2050 relative to 2000. The hypothetical substitution of seafood with selected alternative non-traditional foods does not provide adequate amounts of nutrients. CONCLUSION: Traditionally-harvested seafood remains fundamental to the contemporary diet and health of coastal BC FNs. Potential dietary shifts aggravated by climate-related declines in seafood consumption may have significant nutritional and health implications for BC FN. Strategies to improve access to seafood harvest potential in coastal communities are needed to ensure nutritional health and overall well-being and to promote food security and food sovereignty in coastal FNs.
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spelling pubmed-63922262019-03-08 Potential impacts of climate-related decline of seafood harvest on nutritional status of coastal First Nations in British Columbia, Canada Marushka, Lesya Kenny, Tiff-Annie Batal, Malek Cheung, William W. L. Fediuk, Karen Golden, Christopher D. Salomon, Anne K. Sadik, Tonio Weatherdon, Lauren V. Chan, Hing Man PLoS One Research Article BACKGROUND: Traditional food systems are under pressure from various stressors, including climate change which is projected to negatively alter the abundance of marine species harvested by coastal First Nations (FNs) in British Columbia (BC). OBJECTIVE: To model the potential impacts of the climate-related declines in seafood production on the nutritional status of coastal BC FNs. In addition, we projected potential changes in nutrient intakes, under different scenarios of substitution where traditional seafood is replaced with alternative non-traditional foods. METHODS: The study design is a mixed-method approach that combines two datasets: projected scenarios of climate-related change on seafood catch potential for coastal BC FNs and data derived from the cross-sectional First Nations Food, Nutrition, and Environment Study. The consumption of seafood was estimated using a food frequency questionnaire among 356 FNs. The contribution of seafood consumption to protein, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), vitamins (A, B12, D, niacin), and minerals (zinc, selenium and iron) requirements was assessed using Dietary Reference Intakes (DRIs). RESULTS: Traditional seafood consumption provided daily recommendations of EPA+DHA (74–184%) and vitamin B12 (84–152%) and substantial levels of niacin (28–55%), selenium (29–55%), vitamin D (15–30%) and protein (14–30%). Projected climate change was estimated to reduce the intakes of essential nutrients by 21% and 31% under ‘strong mitigation’ (Representative Concentration Pathway, RCP2.6) and ‘business-as-usual’ (RCP8.5) climate change scenarios, respectively, by the year 2050 relative to 2000. The hypothetical substitution of seafood with selected alternative non-traditional foods does not provide adequate amounts of nutrients. CONCLUSION: Traditionally-harvested seafood remains fundamental to the contemporary diet and health of coastal BC FNs. Potential dietary shifts aggravated by climate-related declines in seafood consumption may have significant nutritional and health implications for BC FN. Strategies to improve access to seafood harvest potential in coastal communities are needed to ensure nutritional health and overall well-being and to promote food security and food sovereignty in coastal FNs. Public Library of Science 2019-02-27 /pmc/articles/PMC6392226/ /pubmed/30811408 http://dx.doi.org/10.1371/journal.pone.0211473 Text en © 2019 Marushka et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Marushka, Lesya
Kenny, Tiff-Annie
Batal, Malek
Cheung, William W. L.
Fediuk, Karen
Golden, Christopher D.
Salomon, Anne K.
Sadik, Tonio
Weatherdon, Lauren V.
Chan, Hing Man
Potential impacts of climate-related decline of seafood harvest on nutritional status of coastal First Nations in British Columbia, Canada
title Potential impacts of climate-related decline of seafood harvest on nutritional status of coastal First Nations in British Columbia, Canada
title_full Potential impacts of climate-related decline of seafood harvest on nutritional status of coastal First Nations in British Columbia, Canada
title_fullStr Potential impacts of climate-related decline of seafood harvest on nutritional status of coastal First Nations in British Columbia, Canada
title_full_unstemmed Potential impacts of climate-related decline of seafood harvest on nutritional status of coastal First Nations in British Columbia, Canada
title_short Potential impacts of climate-related decline of seafood harvest on nutritional status of coastal First Nations in British Columbia, Canada
title_sort potential impacts of climate-related decline of seafood harvest on nutritional status of coastal first nations in british columbia, canada
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6392226/
https://www.ncbi.nlm.nih.gov/pubmed/30811408
http://dx.doi.org/10.1371/journal.pone.0211473
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