The ecology of Florida is remarkable due to its climate and diverse ecological regions. From the northwestern panhandle to the Everglades, differences in hydrology, climate, landforms, soil types, flora, and fauna shape each ecoregion, creating a complex and unique landscape that has been recognized as a global biodiversity hotspot. A misconception often associated with the Florida landscape is that the changes of density and diversity of flora seem chaotic or random, however, Eugene Odum's research states that "…over the long term plant habits showed remarkable continuity." The introduction of different species caused certain evolutionary developments – some plants grew more quickly and in larger numbers, while others could survive longer – to sustain themselves in a dense environment.