All tropical rainforests have similar characteristics such as climate, canopy structure, rainfall  and plant and animal relationships.  The range of species in a rainforest can vary because of the rainforest location or area. For example, a rainforest that joins onto a mangrove forest is different and contains different species than a rainforest that blends with mountain forest. The distribution of rainforest mainly coupled with warm, moist climates with lots of sun and rain witch occur close to the equator. Due to the many rivers of the Amazon this is a main factor of species distributions carrying many cedes and animals down the rivers spreading them out across the jungle.