Sentence:  With the idea of the <WSD>timescape</WSD>, I seek to achieve an extension of the landscape perspective, that is, to develop an analogous receptiveness to temporal interdependencies and absences, and to grasp environmental phenomena as complex temporal, contextually specific wholes. This involves a shift in emphasis not just from space to time but, more importantly, to that which is invisible and outside the capacity of our senses. 
Meaning of the word marked with <WSD> tags:  A perspective over a period (particularly a long period) of time.