Oceans and seas play a vital role in the context of Sustainable Development Goals (SDGs) as they significantly contribute to the Earth's biosphere's health and the global economy. They are critical to sustaining life on earth, acting as a major source of food and oxygen while also serving as natural carbon sinks that mitigate climate change impacts. SDG 14, "Life Below Water," explicitly acknowledges the importance of conservation and the sustainable use of the world's oceans, seas, and marine resources.
Oceans absorb about 30% of carbon dioxide produced by humans, buffering the impacts of global warming. However, this process has implications such as ocean acidification, negatively impacting marine biodiversity and ecosystems. These impacts, coupled with unsustainable fishing practices and pollution, threaten the health of our oceans and seas. SDG 14 sets targets to prevent and reduce marine pollution of all kinds, sustainably manage and protect marine and coastal ecosystems, and regulate harvesting and end overfishing to restore fish stocks to sustainable levels.
Oceans also support economic wellbeing. Over three billion people depend on marine and coastal biodiversity for their livelihoods. By protecting oceanic ecosystems, the SDGs also support SDG 1, "No Poverty," and SDG 8, "Decent Work and Economic Growth." Furthermore, the oceanic routes are critical for global trade, supporting SDG 9, "Industry, Innovation, and Infrastructure."
Furthermore, by implementing strategies for cleaner and more sustainable use of oceans and seas, it can also contribute to SDG 13, "Climate Action." For instance, developing and implementing new technologies to harness energy from waves and tides can promote renewable energy usage and reduce reliance on fossil fuels, aligning with SDG 7, "Affordable and Clean Energy."
As sea level rise drives saltwater farther inland, drinking water supplies of some coastal cities will be contaminated. This paper evaluates how climate change is shifting the location of ‘salt lines,’ the zone where coastal fresh water meets the ocean, and implications for drinking water management. It focuses on changes from climate, as opposed to water overuse or water quality mismanagement, and reviews recent literature along three dimensions. Firstly, the paper reviews regulations on salinity in drinking water.
Microplastic pollution has sparked interest from researchers, public, industries, and regulators owing to reports of extensive presence of microplastics in the environment, household dust, drinking water, and food, which indicates chronic exposure to organisms within ecosystems and in human living spaces. Although exposure to microplastics is evident, negative effects from microplastics appear to be minimal in most studies on biota, and no risk assessments have been completed for microplastics on human health.
The Atlantic Walrus, Multidisciplinary insights into human-animal interactions, 2021, Pages 251-262
Preparing a Workforce for the New Blue Economy, People, Products and Policies, 2021, Pages 201-209
Compared to other climate regions of the world, Mediterranean regions are likely to experience more severe effects of climate change as rainfall decreases and temperatures increase. Global climate change models predict a reduction in rainfall and rise in the temperature of rivers in South Africa's Cape Fold Ecoregion (CFE) – a Mediterranean region in the south-west corner of the country.
