Ecoroof Bio-diversity in residential neighborhoods

Portland’s first ecoroof was built to measure rain management performance. However, unbeknownst to the researcher that little 180sf garage ecoroof would reveal a treasure of biodiversity as well. Installed in 1996 at a NE Pdx residence and then in 2019 removed and then reinstalled on a new residence front porch in SE Pdx. The soil, plants and biodiversity came with it. The researcher continues to monitor the ecoroof for signs of life and has captured evidence of many species who inhabit or visit the ecoroof. This presentation will provide photos of compelling observations. An ecoroof is like the old little grocery store down the street, with birds, bugs, plants, seeds and microorganisms in seasonal abundance. The ecoroof also provides self-storage for some species to stash winter food. Some species forage for seeds, some eat plants and seeds, some gather nesting materials, some come to find other species to eat, and of course the pollinators - doing what they do best

Ecoroof Soils & Systems Comparisons

Abstract Since the beginning of the ecoroof movement in Portland in 1996, soils have been considered the most important component of a successful ecoroof and indeed they are. Yet, to this date, little direct comparative research exists to distinguish between the available proprietary soil blends for vegetation health, rain management, energy insulation and other attributes. Starting in 2017 the LIVE Center began conducting such comparisons and the results are surprising and encouraging. In 2020 this presentation covered 20 soils, this year the presentation will show results of comparing more than 40 different soils and proprietary systems, focus is on rain management, vegetation health, energy, costs and limited attention to bio-diversity