Category Archives: River research

Pearls in Peril

Originally posted on The Freshwater Blog:
An adult freshwater pearl mussel on a stream bed. Image: J Webley / SNH The freshwater pearl mussel (Margaritifera margaritifera) is an extremely long-lived species of mollusc (a 134 year old mussel was found…

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Luna Leopold’s papers online

  I have talked briefly about Luna Leopold (the famous American geomorphologist and hydrologist) before, but recently discovered this treasure trove of his writings collated here at the University of California, Berkeley.  It is called the ‘The Virtual Luna Leopold … Continue reading

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When 1 + 1 doesn’t always equal 2: drainage basins and stream order

All animals and plants live within the constraints of their physical environment. But the physical form of the flowing water environment is unique.  In the sea, there are, of course, vast distances between one ocean and another and these are … Continue reading

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What’s going on down there? The hyporheic zone and its fauna

The majority of people, I suspect, think that rivers flow only above ground.  After all, it doesn’t really make sense for rivers to flow through the ground, does it? Yet that is actually what they do.  The phenomenon is called … Continue reading

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Movement ecology and the distribution of stream shrimp assemblages

By James Dyer, PhD candidate, School of Environmental Sciences, Charles Sturt University Researchers have long wished to understand what governs the distribution of organisms. For riverine animals and plants, hydrology (flow) almost always seems to have a strong influence (Schlosser … Continue reading

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Blackflies (Simuliidae) and river blindness

Many years ago, while at a conference, I was having breakfast with a well-known US freshwater scientist, who told me a story. While the details of the story are a bit hazy, it went like this. Last century, a group … Continue reading

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Leonardo da Vinci: water, rivers, science and art (Part 1)

Leonardo da Vinci was a truly remarkable polymath.  He is variously known as a painter, sculptor, scientist (geologist, botanist), architect, engineer, musician and inventor. But, amongst his many areas of expertise, Leonardo could perhaps also be called an hydrologist or … Continue reading

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