Over the last 25 years ecology has emerged from being a predominantly descriptive subject to one with a more substantial theoretical framework underpinned by evidence from experiments. In this advance, improved technology had undoubtedly played a most significant role; few ecologists could operate without a computer to hand and many branches of the subject require very sophisticated instrumentation. This period has also been seen much greater precision in the formation of hypothesis, a more general search for mechanisms, increasing integration with other disciplines and increasing demands for...