Pumps and conveyor belts. How could more whales help save us?

Over the last 18 months, thanks to the backing of partners including the Global Returns Project, and the Flotilla Foundation, WDC has put together a major international project that aims to plug the gaps in our knowledge of whales’ ecosystem services which can then be used to support conservation efforts.  The charity has convened two symposia with leading scientists in the field to identify priority research topics, and set up the Climate Giant Project in October 2021 with founding partners BRITA, Animal Friends Pet Insurance and Livework, to give businesses a model for investing in scientific research and conservation programmes.

Dr Joe Roman, Gund Fellow at University of Vermont, has been researching the role whales play in carbon capture and ecosystem services for more than a decade, and is leading the research testing the ‘great whale conveyor belt’ hypothesis.

'When we think of nutrients moving around the ocean we normally focus on the role of currents and tides,' says Dr Roman.  'What is less well understood is the impact that some of the largest creatures on the planet make as they undertake some of the longest migrations of any species. The idea that whales might be responsible for a vast oceanic conveyor belt of nutrients such as nitrogen and phosphorus has enormous implications for our understanding of marine ecosystems, and nature-based solutions to climate breakdown.'

Dr Heidi Pearson, Associate Professor of Marine Biology at University of Alaska, is leading the first empirical study of the ‘whale pump’ in the North Pacific.  Fieldwork beginning this month (May 2022) seeks to determine the extent to which migratory humpback whales circulate nutrients and carbon in Southeast Alaska and their impact on marine productivity and carbon sequestration.

'The whale pump hypothesis is intriguing, but quantifiable data on it is limited,' explains Dr Pearson. 'This project will empirically test the theory, by determining if and how humpback whales facilitate nutrient and carbon cycling, and ultimately, their impacts on marine productivity and carbon sequestration.'

WDC is putting almost US$100,000 into the two research projects. We are seeking further support for a multi-year programme of research initiatives to accelerate the science around whale-based climate solutions.

'It has been said that the industrial slaughter of nearly three million whales in the 20th century had the equivalent impact on the environment as the destruction of a rainforest the size of the Amazon,' adds Vicki James. 'While many whale populations are slowly recovering, they still face huge threats from shipping, fishing, hunting and pollution.  We believe this new research will accelerate efforts to support the recovery of whale populations, and protect whales, as one of our mightiest allies in the fight against climate breakdown.'

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