…both by meandering rivers and human beings, is to create a more, a less herbaceous, more annual, more ephemeral kind of biotome. Carl Sauer, the geographer, said, we found the planet a climaxed forest, and we will leave it a weedy lot. That's what he…

…very quickly because, first of all, you're not professionally interested in the details of evolution of ecosystems. But, for instance, Carl Sauer has argued that there is no such thing as a natural grassland, that grasslands are the earliest artifact of…

…are also theorists who hold that human burning then contributes to the appearance of the grasslands and stabilizes them. Carl Sauer of the University of California at Berkeley Eminent geographer, takes the position that there are no natural grasslands on…

…the density of species plant species in the Amazon is far higher than anywhere else on earth. You know, it's thought by Carl Sauer and other people of that school that the major force creating speciation in plants before the advent of man was rivers,…

…zone for evolutionary struggle. In the forest everything is at climax and there's no margins but in these open land areas, Carl Sauer, reflecting on this situation a great geographer said man found this planet a climaxed rainforest. He will leave it a…

…very quickly because first of all you're not professionally interested in the details of evolution of ecosystems. But for instance, Carl Sauer has argued that there is no such thing as a natural grassland that grasslands are the earliest artifact of human…

…the density of species plant species in the Amazon is far higher than anywhere else on earth. You know, it's thought by Carl Sauer and other people of that school that the major force creating speciation in plants before the advent of man was rivers…

…very quickly because first of all you're not professionally interested in the details of evolution of ecosystems. But for instance, Carl Sauer has argued that there is no such thing as a natural grassland, that grasslands are the earliest artifact of human…

…what is called uninhabited land, so called predatory species can move in there and that's where the speciation is taking place. Carl Sauer estimated that before the advent of culture, of human culture, it was that the meandering of rivers was being forced…

…could but emulate it we could rise out of the rubble that we are making of the planet. You know it was the geographer Carl Sauer who said: man found the planet a climaxed primeval forest. He and notice the gender here he will leave the planet a weedy…

…So clearly what we have are the survivors of a process of clearing and there is argument among botanists about this but Carl Sauer, who was a great geographer and thinker on these matters, held that there is no such thing as a natural grassland, that…

…strategy for the rapid invasion and claiming of empty land and before human beings, rivers were the major creators of empty land. Carl Sauer who was a biologist and a geographer he said man found the earth the climaxed rainforest and we will leave it a…

…could but emulate it we could rise out of the rubble that we are making of the planet. You know it was the geographer Carl Sauer who said: man found the planet a climaxed primeval forest. He and notice the gender here he will leave the planet a weedy…