The recently launched Nature of Cities collective blog looks fantastic.  From the contributors:  The Nature of Cities is a collective of contributors, an essay site devoted to cities as ecological spaces.  Cities are fundamentally ecological spaces. They are ecosystems packed with trees and vegetation that comprise an urban forest. They house birds, insects, small mammals, diverse ecological habitats, and more. People live in them. They are connected to suburban and rural areas along ecological gradients. Human wellbeing and effective urban design is intimately connected to the health of urban ecosystems.  We believe that nature in cities — by which we mean ecosystems, ecosystem function, biodiversity, communities, and the habitats of species — needs more voices, more perspectives and expanded conversation about its critical importance and how it can be promoted, conserved, and managed for the good of all.