Safeguarding nutrients from coral reefs under climate change

Mellin, Camille; Hicks, Christina C.; Fordham, Damien A.; Golden, Christopher D.; Kjellevold, Marian; MacNeil, M. Aaron; Maire, Eva; Mangubhai, Sangeeta; Mouillot, David; Nash, Kirsty L.; Omukoto, Johnstone O.; Robinson, James P. W.; Stuart‐Smith, Rick D.; Zamborain‐Mason, Jessica; Edgar, Graham J.; Graham, Nicholas A. J.

doi:10.1038/s41559-022-01878-w

Cited by 29 publications

(33 citation statements)

References 96 publications

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“…For example, climate-related changes in the species composition and nutrient profiles of phytoplankton and zooplankton could in turn influence omega-3 levels in fishes. 26 Better understanding the links between trophic pathways and the nutritional quality of wild foods such as fisheries under climate change is an emerging field of study of global concern for food security.…”

Section: Accessmentioning

confidence: 99%

“…11 Mixed food systems are also found outside the Arctic in communities still actively dependant on local harvesting, such as coral fishing communities of the Global South who rely on small-scale reef fisheries for food security, culture, and well-being. 26 During the COVID-19 pandemic, local food production was also identified across geographies as an essential aspect of resilient food systems that can withstand shocks. 107 Whereas many cities are strongly reliant on global food supply chains and thus vulnerable to global shocks, others have fostered local agriculture.…”

Section: From Mitigating Impacts To Building Resiliencementioning

confidence: 99%

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The complex impacts of climate change on ecosystems, food (in)security, and mental health

Paquin¹,

Falardeau²

2023

Preprint

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Climate change is disrupting food security around the world, with uneven impacts between regions and populations. Through direct and indirect pathways, climate change affects the availability, accessibility, utilization, and stability of food systems. In turn, climate-related food insecurity may cause or exacerbate mental health problems by affecting the biological, psychological, social, and cultural determinants of mental health. These mental health impacts of climate change and food insecurity vary based on age, gender, and sociocultural context, and they intersect with other forms of socioeconomic precarity. Climate change is thus connected to human mental health through complex chains of causation, involving dynamic pathways that extend from the planetary to the individual level of analysis. In this chapter, we examine the impacts of climate change on mental health through its effects on ecosystems and food insecurity. After defining food security, we consider the consequences (current and future) of climate change on natural systems and the pillars of food security. We review epidemiological and qualitative evidence of the influence of food insecurity on mental health. Drawing from our experience in the Arctic, we present a case study of how climate change specifically impacts food security and mental health in Inuit Nunangat. We conclude by discussing some ways to mitigate, and respond to, climate change at different scales, from local to global, and by outlining ways forward for research and policy at the interface of climatic, food, and health systems.

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Section: Accessmentioning

confidence: 99%

Section: From Mitigating Impacts To Building Resiliencementioning

confidence: 99%

The complex impacts of climate change on ecosystems, food (in)security, and mental health

Paquin¹,

Falardeau²

2023

Preprint

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“…Integrative research is particularly needed to extend and connect understandings of the different pieces of chains of causality and make their broader relevance to people and broad-scale sustainability concerns explicit. For example, while we know that shifts in marine habitats will impact fish populations, the magnitude and relative importance of these impacts for the livelihoods and nutritional status of seascape populations remain unclear (Mellin et al 2022 ). Efforts under SDG-14 to conserve and sustainably use marine resources, such as the creation of new protected areas or imposing new restrictions on fisheries, will have to take into account the changing, dynamic nature of both social-ecological relationships and the perturbations they experience (Cumming et al 2005 ).…”

Section: Research Prioritiesmentioning

confidence: 99%

Research priorities for the sustainability of coral-rich western Pacific seascapes

et al. 2023

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Nearly a billion people depend on tropical seascapes. The need to ensure sustainable use of these vital areas is recognised, as one of 17 policy commitments made by world leaders, in Sustainable Development Goal (SDG) 14 (‘Life below Water’) of the United Nations. SDG 14 seeks to secure marine sustainability by 2030. In a time of increasing social-ecological unpredictability and risk, scientists and policymakers working towards SDG 14 in the Asia–Pacific region need to know: (1) How are seascapes changing? (2) What can global society do about these changes? and (3) How can science and society together achieve sustainable seascape futures? Through a horizon scan, we identified nine emerging research priorities that clarify potential research contributions to marine sustainability in locations with high coral reef abundance. They include research on seascape geological and biological evolution and adaptation; elucidating drivers and mechanisms of change; understanding how seascape functions and services are produced, and how people depend on them; costs, benefits, and trade-offs to people in changing seascapes; improving seascape technologies and practices; learning to govern and manage seascapes for all; sustainable use, justice, and human well-being; bridging communities and epistemologies for innovative, equitable, and scale-crossing solutions; and informing resilient seascape futures through modelling and synthesis. Researchers can contribute to the sustainability of tropical seascapes by co-developing transdisciplinary understandings of people and ecosystems, emphasising the importance of equity and justice, and improving knowledge of key cross-scale and cross-level processes, feedbacks, and thresholds.

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“…Several researchers [5][6][7] have reported the impact of climate change on yield, abundance, and biological productivity of aquatic organisms in trophic zones and coral reefs at various stages of development. Although it was difficult for these researchers to arrive at similar conclusions in their findings since the level at which climate change impacts one area (positive or negative) differs from the other.…”

Section: Introductionmentioning

confidence: 99%

Seasonal variations of water physico-chemistry, heavy metal concentrations and ecological abundance and biodiversity of fish from two Lagoon streams

Jolaosho,

Olayeri,

Oladipupo

et al. 2023

Preprint

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Background The fluctuation trends of ecological parameters and the biodiversity of aquatic living resources in freshwater environments are influenced majorly by anthropogenic activities. However, little or no study has been reported on the influence of natural events particularly seasons, on water physico-chemistry, heavy metal concentrations and their impacts on the ecological assemblages of fish in interlinked lagoon systems. The present study was carried out to estimate the influence of seasonal variations on the physico-chemical parameters, heavy metal concentration of water and biodiversity, and richness of fish from two lagoons with a view to ascertaining the significance of seasons on aquatic ecosystems and their resources. Methods The sampling lasted 12 months (from December 2021 to November 2022), during which both dry and rainy seasons were experienced. Samples of water and fish were collected twice per month. Water quality analysis was done using BOYD titration and APHA standard methods. The heavy metal contents were determined using the atomic absorption spectrophotometer. Diversity indices were computed using Microsoft Excel 2015. Results There were inconsistencies in the results obtained, and as a result, statistical differences (P < 0.05) were observed. Most of the water parameters were at their highest during the dry season. High heavy metal concentrations, particularly Cd, Pb, Zn, and Fe at (P < 0.05), were recorded during the dry season. A total of 920 and 953 individual fish from 22 and 26 families were obtained from Lekki Lagoon during the dry and wet seasons, respectively. In the Lagos Lagoon, a total of 1299 and 1772 individual fish, which belong to 24 and 25 families, were collected during the dry and rainy seasons, respectively. The best diversity indices, such as Shannon Weiner, Simpson's dominant index, Margalef, Menhinick, and the evenness index, were obtained during the rainy season. Conclusion Our results suggested that variation in seasons strongly influenced water quality parameters and heavy metal concentrations, as well as fish species biodiversity in the study areas. Hence, seasonal patterns in relation to aquatic ecosystems should be taken into account when making long-term policies for the sustainability of fisheries resources.

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Safeguarding nutrients from coral reefs under climate change

Cited by 29 publications

References 96 publications

The complex impacts of climate change on ecosystems, food (in)security, and mental health

The complex impacts of climate change on ecosystems, food (in)security, and mental health

Research priorities for the sustainability of coral-rich western Pacific seascapes

Seasonal variations of water physico-chemistry, heavy metal concentrations and ecological abundance and biodiversity of fish from two Lagoon streams

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