Freshwater is one of the most threatened resources on Earth. Dragonflies can tell us what we need to know about the state of this precious resource.
What lies beneath: bedrock peeks through the Antarctic ice.
Russ Hepburn, Kenn Borek Air
Buried beneath kilometres-thick slabs of ice are rivers and huge lakes - some of which are teeming with microbes that thrive in a world without light or oxygen.
Gravel bed rivers and their floodplains are vital to local ecosystems and their ability to adapt to climate change.
Conservation methods for gravel-bed rivers – which are ecological hotspots in the western U.S. – need to improve in order to deal with the effects of climate change.
Spangled perch are one of Australia’s strongly migratory native fish. After storms in January 2015 these fish were actively travelling up a flooded road in outback Northern Territory.
Freshwater fish are declining everywhere, in part thanks to dam-building. But we can have both.
Blue-green algae in the Murray River upstream of Mildura in April.
Toxic algal blooms were unheard of in Australia's major waterways before 1991. Now the Murray River has been struck by four major events in less than a decade, with more likely in the future.
Goldfish might look nice, but they can also spread a variety of decidedly not-nice viruses.
Many pet fish end up in ponds, fountains and waterways. But before ditching your goldfish in the park, stop and think about the viruses you could also be releasing.
Moo-ve along: livestock are one of many threats to Australian freshwater ecosystems.
Freshwater covers only 0.5% of the Earth's surface but is home to 10% of the world's lifeforms.
The remote rivers of northern Australia could be home to untold numbers of new and threatened fish.
Matthew Le Feuvre
A score of new fish species discovered recently in northern Australia remind us how little we know about our country.
Flooded, embanked tributary of the River Eden in Cumbria. Image from a small unmanned aerial vehicle.
Neil Entwistle @salfordhydro
There's a short window of opportunity to gather the data needed to fully assess the impact of changes to rivers and floodplains on flooding.
The Murray River in 2007, at the height of the drought. Hopefully it will be more resilient next time around.
Scott Davis/Wikimedia Commons
As El Nino looms, the Murray-Darling is facing another drought. But after almost a decade of investment in water trading and other policies, its prospects are better this time around.
Rivers in many agriculturally significant areas of Australia could lose water as the landscape grows greener.
Kerry Raymond/Wikimedia Commons
Rising carbon dioxide levels are making plants grow faster, sucking up more water and reducing river flows in many agriculturally important areas of Australia, according to new research.
Waterbugs are used for the monitoring of river ecosystem health across the world.
Around the world, waterbugs are the most widely-used indicator of environmental health and pollution of rivers, lakes and wetlands.
Groynes at the Keta Sea Defense Project on Ghana’s coast.
Kwasi Addo Appeaning
Unless something is done to curb erosion, Ghana's coast could soon whither away.
A flood plume containing sediments, nutrients and pesticides flowing onto the Great Barrier Reef from Bundaberg.
AAP Image/James Cook University
Successive plans to curb the sediments, nutrients and pesticides flowing into the waters around the Great Barrier Reef have fallen short, leaving the corals that call the reef home highly vulnerable.
Australia’s north is home to many pristine rivers, but most national parks are focused on land-based conservation.
Carole Mackinney/Wikimedia Commons
Freshwater ecosystems such as rivers, lakes and wetlands are precious. They contain several-times more vertebrate species per unit area than land and ocean environments, and they are more degraded. Protected…
A new river flow forecast model should improve the accuracy and reliability of forecasting extreme weather. The model, developed…
Rivers and streams release carbon dioxide at a rate five times greater than the world’s lakes and reservoirs combined. The…
Western Australia’s Swan-Canning Estuary is not dying, contrary to recent claims. Researchers from Murdoch University found…
The movement of desert sands and dust in Northern China is controlled by one of the world’s largest rivers, new research…
The diverse rivers of Northern Australia, flat and expansive, support diverse species and are linked by unregulated Wet season flows.
Northern futures, northern voices: It seems everyone has ideas about how Australia’s north could be better, but most of those ideas come from the south. In this six-part weekly series, developed by the…