I think that worked this time!
Elisabeth




Not that we probably need more plants to look at, but I found this website out of NYC that lists different species that can be used for green roofs based on amount of water they need.
http://www.nycgovparks.org/sub_about/parks_divisions/gnpc/garden_species_lists/garden_green_roof.html
Elisabeth


We have a goal of creating a display of 10 plant species suitable for the greenroof.
Plant species will each be presented, accompanied by a picture, with the following:
  • species name
  • common name
  • soil needs
  • optimum growing conditions
  • links to previous use on greenroof sites
  • potential seed sources (nurseries that have done restoration projects)
  • seed starting and transplant time
  • native range (with our interpretation of "native" defined)
  • more ?
We will also note any connections plants may have with one another in terms of
companion planting or similar growing needs.
Nick



Here is the analysis of some soil for green roofs by Penn St. :



Hey everyone!
Here is a current list of native grass/herbaceous species that I've come up with that could use more research (use in existing green roofs, root depth, etc.) I'm going to speak to Cynthia Knauf, a local designer who has designed greenroofs, about other possible native plants and what she has used.
  • Agrostis scabra (ticklegrass)
  • Calemagrostis canadensis (bluejoint)
  • Elymus canadensis (canada wild rye)
  • Hierochloe odorata (sweetgrass)
  • Fragaria virginiana (wild strawberry)
  • Mitchella repens (partridge berry)

Add more if you find anything!

-Ted


Hi
I found this article which outlines in the methods how they collected the water running of the roof and recorded it for about a 1 year time frame. It sounds a lot like what we're planning on doing here.

http://jeq.scijournals.org/cgi/content/full/34/3/1036

This is the tipping bucket used in that experiment.

http://www.campbellsci.com/te525ws-l

Elisabeth


Here are a few helpful scientific documents on similar experiments done. Most involve sedum as the vegetation.

The influence of extensive vegetated roofs on runoff water quality:

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V78-4FY9M7H-4&_user=1563816&_coverDate=02%2F15%2F2006&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1210681025&_rerunOrigin=scholar.google&_acct=C000053744&_version=1&_urlVersion=0&_userid=1563816&md5=60f4085427bbef2d3f11eeacd4592c0e
Green roofs as urban ecosystems: ecological structures, functions, and services:

http://caliber.ucpress.net/doi/abs/10.1641/B571005

Response of a Sedum Green-roof to individual rain events:

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VFB-4GBD7X3-1&_user=1563816&_coverDate=07%2F20%2F2005&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1210691070&_rerunOrigin=scholar.google&_acct=C000053744&_version=1&_urlVersion=0&_userid=1563816&md5=e527bd97ffe579aab7442a4939ca8bb6

I have come across no "out of the ordinary" methods in the literature for collection that we have not already discussed, but I will continue to search. I will help ted as we focus more on choosing native, adequate plant species.

Nick

Here is a link to the specifications page on the greengrid website
http://www.greengridroofs.com/specs/systemspecs.htm
and I also found a website about the German FLL (research society for landscape development and landscape design) standards which are mentioned
on the greengrid specifications website. It starts to explain what they are.
http://www.roofmeadow.com/technical/fll.php

Elisabeth

3/2
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VFB-4GBD7X3-1&_user=1563816&_coverDate=07%2F20%2F2005&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1230183612&_rerunOrigin=scholar.google&_acct=C000053744&_version=1&_urlVersion=0&_userid=1563816&md5=dbb009f22ca3b8964f35512980fd65e3
This experiment actually talks about the composition of the soil they used, which a lot of the articles don't mention.
Elisabeth


- stephanie.e.hurley stephanie.e.hurley Feb 24, 2010- stephanie.e.hurley stephanie.e.hurley Feb 24, 2010- stephanie.e.hurley stephanie.e.hurley Feb 24, 2010- stephanie.e.hurley stephanie.e.hurley Feb 24, 2010- stephanie.e.hurley stephanie.e.hurley Feb 24, 2010- stephanie.e.hurley stephanie.e.hurley Feb 24, 2010- stephanie.e.hurley stephanie.e.hurley Feb 24, 2010~~
Hi All,
These resources look good. Each of you should review what others have posted. I met with Elisabeth this week, so check in with her about next steps. The major thing we discussed was compiling the information we need about the green grid specifications in a way that is useful for selecting our own mix of plants. What attributes do our plants need to have in order to survive happily in a green grid cell? How do we show/predict whether the green grid systems and the soils they contain will be functional when vegetated with our (proposed) specially-selected plant mix?

I also found out that a new green roof was constructed on a privately-owned building at the Burlington Airport. I spoke with the landscape architect, Jeff Hodgson, who said he will take us there for a site visit this spring sometime. There may be an opportunity to get involved in some comparative monitoring of that green (mostly sedum) rooftop and the neighboring conventional roof.

We should meet during the week of March 1 to talk more.
Stephanie