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Articles on Food webs

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Megalodon would have dwarfed today’s great white sharks. Christina Spence Morgan

Megalodon sharks ruled the oceans millions of years ago – new analyses of giant fossilized teeth are helping scientists unravel the mystery of their extinction

Megalodon, the world’s largest known shark species, swam the oceans long before humans existed. Its teeth are all that’s left, and they tell a story of an apex predator that vanished.
Hurricane Harvey set up a rare natural experiment to study the effects of fishing. NOAA via Wikipedia

When hurricanes temporarily halt fishing, marine food webs recover quickly

Hurricane Harvey destroyed the fishing infrastructure of Aransas Bay and reduced fishing by 80% over the following year. This removed humans from the trophic cascade and whole food webs changed.
It’s OK, I’m a filter feeder: Whale shark off Indonesia. Marcel Ekkel/Flickr

Shark Week looms, but don’t panic

Media coverage of sharks often exaggerates risks to people, but more than 500 shark species have never been known to attack humans, and there’s lots to learn about them.
Eastern quolls have been introduced in Booderee Nation Park as part of a rewilding project. Oisin Sweeney

We can ‘rewild’ swathes of Australia by focusing on what makes it unique

Rewilding is gaining popularity around the world, as a means to restore ecosystems to their ancient state. But just like Vegemite, Australian rewilding projects need to have a unique flavour.
Plastic trash on San Francisco’s Ocean Beach. Kevin Krejci

Bait and switch: Anchovies eat plastic because it smells like prey

A new study shows that anchovies – key food for larger fish – are attracted to plastic trash because it smells like food. This suggests that toxic substances in plastic could move up through food chains.

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