Nitrous oxide is a potent greenhouse gas, 300 times more powerful than carbon dioxide. Global emissions of N2O are on the rise as a result of human activities — and their impact on ocean ecosystems.
Carbon emissions from maritime shipping and port activities are on the rise. But city ports are finding ways to reduce their carbon footprints and reconnect with nearby cities.
New research looked at wave conditions over the past 40 years, and found wave power has increased since at least the 1980s, mostly in the Southern Hemisphere.
Meg Parsons, University of Auckland, Waipapa Taumata Rau et Lara Taylor, Manaaki Whenua - Landcare Research
Indigenous marine governance is experiencing a revival throughout Oceania, building on traditional worldviews that acknowledge connections between people and all parts of ocean ecosystems.
The oceans play a key role in regulating life on Earth. We must shift our view of them from as something to use if we hope to develop them sustainably.
Ocean waves are a massive source of energy, but it’s challenging to design power generators for the harsh environment. Allowing marine organisms to grow on engineered structures could help.
Alison Kock, South African Institute for Aquatic Biodiversity
Sharks grow slowly and produce few young compared to bony fishes. In many cases, this means that their populations are fished out faster than can be replenished if not well managed.
Gemma Ware, La Conversation; Catesby Holmes, La Conversation et Daniel Merino, La Conversation
Plus, why Brazilian women who lived through Zika are avoiding getting pregnant during the COVID-19 pandemic. Listen to episode 18 of The Conversation Weekly podcast.
Seabirds journey vast distances across the Earth’s seascapes to find food and to breed. This means their biology, particularly their breeding success, can reveal what’s happening in our oceans.
Shakuntala Haraksingh Thilsted, a native of Trinidad and Tobago, is the winner of the 2021 World Food Prize for her work identifying small fish as valuable nutrition sources for developing countries.
Climate change has already made tropical oceans too hot for some marine species to survive. As they flee towards the poles, the implications for ecosystems and human livelihoods will be profound.
Aquaculture is a growing source of healthy protein for millions of people around the world, but there are big differences between farming fish on land and at sea.
Marine Biologist, South African National Parks (SANParks); Honorary Research Associate, South African Institute for Aquatic Biodiversity (SAIAB), South African Institute for Aquatic Biodiversity