This volume is a retrospective publication of contributions originally to two national conferences / seminars held in Sheffield, on the theme of 'Urban Environments - History, Biodiversity and Culture'. To the updated papers from those events we have added invited current contributions on the themes of urban nature and urban ecology. Ideas and issues in urban ecology become more significant as globalisation, urbanisation and cultural severance shape our world and our future ecologies. This is paralleled by increasing interest in the underpinning science and research paradigms in relation to...