Complicités sauvages
Non notée
Année : 2012
Nombre de saisons : 1
Durée moyenne d'un épisode : 60 minutes
Genre(s) : Documentaire
In this series, naturalist Chris Packham reveals the natural world in a way that you’ve never seen it before. For him, what is really beautiful about nature is not the amazing animals and plants that we share the planet with but the hidden relationships between them. These relationships may sound bizarre but without them, no life would be possible.
Saisons
Saison 1
Épisodes
Choisissez votre saison au dessus et découvrez les épisodes qui vous attendent !
Épisode 1 - The Emerald Band
17 juin 2012 - 5/5
Chris travels around the emerald band that encircles our planet – the jungles. And he begins by tackling one of the biggest puzzles about the world’s rainforests: why do these places have such a bewildering variety of life, far greater than any other habitat on Earth? His quest begins in Panama where more varieties of birds have been recorded in a single day than anywhere else on the planet. He reveals that the key to the biodiversity of the rainforests is an almost constant climate. This allows insects and everything else that gorges itself on plants, to flourish all year round. So rainforest plants are under constant attack. The result is an unrelenting arms race, in which only the weird survive. Plants with barbs and poisons for defence; mammals, like the three-toed sloth which has evolved a way to digest leaves that nothing else can digest – even if it means taking days to digest them and moving as slow as, well, as a sloth. And then there are the Heliconius butterflies, that have evolved defence mechanisms against the cyanide of poisonous vines – absorbing the poisons into their bodies to use as a defence against their own predators. Chris reveals how evolutionary arms races in jungles have led to a riotous biodiversity of life. Chris travels to Borneo to see how some of the largest animals of the jungle, the orang-utan and the forest elephant are crucial in protecting this biodiversity, by spreading the precious seeds of jungle plants, far from their parent plants, to avoid attack by their predators. He then travels to the Amazon to witness one truly amazing web of relationships centred around the Brazil nut tree. The ecosystem of this tree is too complex for it to be cultivated, so if you’ve ever eaten a Brazil nut, you too, are dependent on its ecosystem. It involves a small rodent, called an agouti, which the tree needs to disperse and plant its nuts, and a rare orchid which attracts a rare male bee, which in turn attracts a female, the o
Épisode 2 - The Secret of the Savannah
24 juin 2012 - 5/5
Les prairies sont une source importante de nutriments pour les plantes et les animaux et l'azote présent dans l'herbe essentiel pour les mammifères.
Épisode 3 - The Magical Forest
1 juillet 2012 - 5/5
Seasonal forests, such as those that cover the UK and most of North America, are special. Their ecosystems have to cope with drastic change twice a year, in Spring and Autumn. Not only do the inhabitants have to deal with the change, but the entire ecosystem has to transform itself – and it has to do this in perfect synchronicity. In this episode, Chris spends all of his time in the vast seasonal forests of North America. Here, he sees why the whole forest depends on the Autumnal activities of a flying squirrel. And uncovers how the activities of an obscure moth caterpillar in Spring can mean the survival of the Canadian lynx in winter. Perhaps most amazing of all though, is how the great forests of British Columbia depend upon bears to catch salmon and take them into the forest, where their carcasses then fertilise its massive trees. Amazingly, up to 85% of the nutrients that feed these trees come from salmon. That’s how much the tree needs the salmon.
Épisode 4 - Waterworlds
8 juillet 2012 - 5/5
En Amérique du Sud, le marais du Pantanal abrite jaguars, capibaras et anacondas ; dans le delta du Gange au Bangladesh cohabitent singes, tigres et oiseaux.
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