Session Four – 3:30 PM

30 Minute Tracks

These are concurrent tracks – you’ll able to choose which track you want to attend on the day of the event.

Research Track

Policy, Education, Technology Track

Applied LID Track

Plans for Three Experimental Multiple-Species Green Roof Systems in the Flint Hills Eco-Region

By: Lee Skabelund, Associate Professor, Kansas State University
Additional Authors: Carol Blocksome; Research Assistant Professor; Department of Horticulture, Forestry and Recreation Resources, Kansas State University

Mary Knapp; Climatologist; Department of Agronomy; Kansas State University

Tim Todd; Instructor; Department of Plant Pathology; Kansas State University

Creating resilient, low-resource green roofs that fit project objectives, the specific setting, and the larger eco-regional context requires understanding establishment, growth, and survival of mixed-vegetative communities on green roof systems.

This presentation discusses the development of a design for replicated green roof research plots to be installed on the roof of a new College of Architecture, Planning & Design (APD) building on the Kansas State University (Manhattan, Kansas) campus in 2017. The proposed design is informed by the team’s current green roof research project, peer-reviewed literature, and lessons learned from by designers and scientists across North America.

The proposed monitoring plan was shared with the professional design team during the new APD building design stage, and dialog between the research team and building architects continued as construction documents were drawn up so that the completed green roof could meet the stringent research requirements needed for advancing the knowledge of how extensive and semi-intensive green roofs function. Using three different substrate depths, two different substrate types, and 72 planted plots composed of three different multiple-species mixes, researchers from an interdisciplinary team consisting of landscape architecture, climatology, and plant sciences will seek to understand links between hydrologic and micro-meteorological conditions, green roof substrate characteristics, and plant growth over a five-year period. Abiotic conditions (precipitation, irrigation, air and soil temperatures, soil moisture, and evapo-transpiration) and plant growth characteristics will be monitored.

Proposed research objectives and monitoring strategies will be explained, and input on improving the research plan solicited from LID Symposium participants.

2nd Generation Green Infrastructure

By: Scott Gorneau, National Manager – Stormwater Systems, Convergent Water Technologies

Traditional stormwater engineering, with its vast array of pipe, inlets and ponds is yesterday’s solution. Today, owners and design professionals are choosing the next generation of Low Impact Development solutions, reducing hard infrastructure, lowering costs and saving valuable land. One such next generation solution is High Performance Modular Biofiltration Systems (HPMBS) for linear roadway and impervious area retrofits. Field testing conforming to the level of TAPE\TARP will demonstrate how these systems perform in a high rainfall – cold climate environment.

Carex-The Perfect Bioretention Plant

By: Alan Weiss, President, Papio Valley Nursery

As the landscape industry started to merge more fully with the green industry, we at Papio Valley Nursery have moved towards researching, testing and growing native plants to determine what are the best selections for bioretention and reclamation projects for Eastern Nebraska and Western Iowa. We are excited to be growing a line of Carex species that are hardy and suitable for virtually any site. The Carex we have tested grow well in fluctuating climates, in varying soils, and in sun and shade and wet and dry applications.
Because Eastern Nebraska and Western Iowa face unique climatic conditions including unpredictable freeze/thaw cycle, relentless wind, unseasonable drought, torrential rain, less reliable frost dates, and poor soil, the importance of testing species in our climate has been our focus. The Carex we have found to be most successful in our region are Pennsylvania, Fox, Plains Oval, and Palm Sedge. These Carex start quickly to stay on schedule with a project, and are produced in both plugs and larger pot sizes for varying project uses. They root quickly, require little maintenance, and are winter hardy to ensure long term survival.

In addition to our native selections research, we have made progress in researching and creating a more suitable soil basin for bioretention projects with some nutrition, good water holding capacity while still draining very effectively.

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