REASONING ABOUT ADAPTATIONS IN ECOSYSTEMS.

The article discusses adaptations in the ecosystem. It states that in the investigation of ecosystems, the controversy has centered upon the relations between the biotic components. Scientists have pointed out that environments vary both in space and in time and the vegetation will not be the same in any two places. Most demonstrations of vegetational continua are stated to have been made from the sampling of stands within a single plant formation. The reason stated for this is to be expected because when two communities differ in physiognomy, there is a change in species composition on passing from one to the other.