SEP 2019  
Environmental Research

Human Impacts on Oceans Nearly Doubled in Recent Decade

Humans have had a huge impact on the ocean. In fact, evidence of humans can be found all over the oceans, even in the most remote polar areas, in the form of floating trash. The main areas of human impact can be divided into those related to ocean pollution, habitat destruction, and the introduction of alien species.  Over the recent decade, human impacts to the world’s oceans have, on average, nearly doubled and could double again in the next decade without adequate action. That is according to a new study by researchers from the National Center for Ecological Analysis and Synthesis (NCEAS) at UC Santa Barbara. Published in the journal Scientific Reports, the study assessed for the first time where the combined impacts that humans are having on oceans - from nutrient pollution to overfishing - are changing and how quickly. In nearly 60% of the ocean, the cumulative impacts are increasing significantly and, in many places, at a pace that appears to be accelerating.

‘That creates even more urgency to solve these problems,’said lead author Ben Halpern, director of NCEAS and a professor at UC Santa Barbara’s Bren School of Environmental Science & Management. Climate change is a key factor driving the increase across the world, as seas warm, acidify, and rise. On top of that, commercial fishing, runoff from land-based pollution, and shipping are intensifying progressively each year in many areas of the ocean. ‘It is a multifactor problem that we need to solve. We can’t just fix one thing if we want to slow and eventually stop the rate of increase in cumulative impacts,’said Halpern.

The study also projected the impacts one decade into the future, based on the rate of change in the recent past, finding that they could double again if the pace of change continues unchecked. The assessment provides a holistic perspective of where and how much human activities shape ocean change - for better or worse - which is essential to policy and planning.

Regions of particular concern include Australia, Western Africa, the Eastern Caribbean islands, and the Middle East, among others. Coastal habitats such as mangroves, coral reefs, and seagrasses are among the hardest-hit ecosystems. There is an upside to the story, however. The authors did find ‘success stories’around every continent, areas where impacts have declined, such as the seas of South Korea, Japan, the United Kingdom, and Denmark, all of which have seen significant decreases in commercial fishing and pollution. These declines suggest that policies and other actions to improve ocean conditions are making a difference - although, the analysis
does not attribute specific actions to those declines.

‘We can improve things. The solutions are known and within our grasp. We just need the social and political will to take action,’said Halpern. To assess the pace of change, the authors leveraged two previous and similar assessments conducted by several of the same team members and others in 2008 and 2013, which provided first glimpses into the full, cumulative extent of humanity’s impacts on oceans.

‘Previously, we had a good measure of the magnitude of human impacts, but not a clear picture of how they are changing,’said co-author Melanie Frazier, a data scientist at NCEAS.

Frazier was surprised to see in the data how dramatically ocean temperatures have increased in a relatively short period of time. ‘You don’t need fancy statistics to see how rapidly ocean temperature is changing and understand the magnitude of the problem,’said Frazier. ‘I think this study, along with many others, highlights the importance of a concerted global effort to control climate change.’


© TERI 2020

Nominations open for CSP Today India awards 2013

The inaugural CSP Today India awards ceremony takes place on March 12, and CSP developers, EPCs, suppliers and technology providers can now be nominated.

CSP has made tremendous progress since the announcement of the Jawaharlal Nehru National Solar Mission in 2010. With Phase I projects now drawing closer to completion, the first milestone in India’s CSP learning curve is drawing closer. CSP Today has chosen the next CSP Today India conference (12-13 March, New Delhi) as the time for the industry to reflect upon its progress and celebrate its first achievements.

At the awards ceremony, industry leaders will be recognized for their achievements in one of 4 categories: CSP India Developer Award, CSP India Engineering Performance Award, CSP India Technology and Supplier Award, and the prestigious CSP India Personality of the Year.

Matt Carr, Global Events Director at CSP Today, said at the opening of nominations that “CSP Today are excited to launch these esteemed awards, which will enhance the reputation of their recipients. I am particularly excited to launch the CSP India Personality of the Year award, a distinguished honor for the industry figure deemed worthy by their peers.”

All eyes will be on the CSP Today India 2013 Awards when nomination entry closes on February 4 and the finalists are announced on February 11. The awards are open to all industry stakeholders to nominate until February 4 at or by e-mail to [email protected]

Matt Carr
+44 (0) 20 7375 7248
[email protected]