The tropical index is calculated from terrestrial and freshwater populations from the Afrotropical, Indo-Pacific and Neotropical realms and from marine populations between the Tropics of Cancer and ...

Ecosystems can be found on a variety of scales such as a small-scale freshwater pond system or on a global scale such as the tropical rainforest biome. Tropical rainforests - Edexcel Tropical ...

The Amazon and its neighbours – the Orinoco and the Andean rainforest – account for 73.5 per cent of tropical forests ... where trees die faster and biodiversity is harder to maintain near ...

Building on a long history of successful collaboration, Washington University in St. Louis and the Missouri Botanical Garden ...