For life Earth, oceans are necessary. They not only provide us with food and resources, but also play a massive role in maintaining a stable climate: from a quarter to a third2 emitted by people who would otherwise remain in the atmosphere in order to further intensify climate change, is captured and stored by the sea.
But oceans are in trouble. In the face of the attack of human pressure – including translation, pollution, growing temperatures and acidification – the sea of the world could see how the load on them doubled over the next few decades. This would have huge negative consequences for biological diversity, as well as for people around the world.
International team, led by the National Center for Ecosystem Analysis and Synthesis (NCEAS) at the University of California, Santa Barbara, model Like pressure exerted to oceans of the world, it can change in the future. Their analysis predicts that until around 2050, cumulative ocean pressure may raise by 2.2 to 2.6 times compared to today. The fastest raise in the impact will take place near the equator, in the poles and in coastal areas.
“Our cumulative influence on the oceans, which is already significant, will double until 2050 – in just 25 years” – explained Ben Halpern, maritime ecologist and director of Nceas University statement. “It’s sobering. And unexpected, not because the effects will grow – it is not surprising – but because they will grow so quickly, so fast.”
Halpern and his team, in cooperation with Nelson Mandela University in South Africa, integrated 17 data sets from around the world to create a comprehensive global model of the scope and intensity of the impact of human activity on the ocean. Earlier studies often concerned the impact of specific insulation activities; The current study integrates these activities to clearly emphasize the future vision of the sea environment.
There is a picture of further deterioration into already strongly affected areas, such as coastal waters, as well as rapidly expanding strokes to the high seas, which until now were relatively stable. In equatorial regions, the influence of human activity may raise almost three times in the 1940s.
Specific main effects include rising sea temperatures, decreasing sea resources due to fishing, growing sea levels, acidification of sea water (which is a consequence of what2 dissolving in the sea) and algae flowers due to the influx of nutrients that flow into the ocean, mainly from farms. While these loads are grave in insulation, their combined effects can exceed the resistance of ecosystems and lead to irreversible losses.
Scientists warn that this cumulative impact will then hit society-on an example, reducing food reserves, killing jobs in tourism and fishing, flooding low lands and destroying coral reefs that protect the coast lines against acceleration of storms and tsunami. Halpern said that there would be a direct impact on human maintenance and the economy, which leads to regional economic instability.
In particular, developing countries and nations compact islands do not have economic means to take adaptation, despite their often dependence on the naval resources. Therefore, accumulated effects seem unevenly in different countries. Oceanic change is not only an environmental problem; This is a problem concerns the stability of the international community as a whole.
However, the projections of this study are only possibilities; Such a future does not have to come. Reducing greenhouse gas emissions to reduce climate change and acidification of oceans, systematically managing fishing resources, avoiding coastal pollution and maintaining coastal and salty marshes can lend a hand reduce deterioration. There is still a place to minimize influence.
This story originally appeared Wired Japan And it was translated from Japanese.