Green Roofs - Living Architecture Monitor - Spring 2020 - 9
Photo courtesy B Rowe
DIVERSE PLANTS PROVIDE MULTIPLE ENERGY &
WATER FUNCTIONS AT THE UNIVERSITY LIBRARY,
BASEL, SWITZERLAND
exhibit higher transpiration
rates. Changes in composition can also influence water
holding capacity and capillary
movement. As aerated pore
space decreases, water holding
capacity increases and vice
versa. Planting more C3 and
C4 plants such as herbaceous
perennials and grasses will
increase transpiration, however, there must be enough
substrate moisture for these
LIVINGARCHITECTUREMONITOR.COM
plants to survive. If moisture is
not available, these species will
be stressed or die. Providing
deeper growing substrates or
supplemental irrigation may
be necessary to support C3
and C4 plants, but this practice
also means that pre-existing
moisture levels will be higher
and the roof won't be able to
hold as much water when the
next rain event occurs.
Regarding energy, intuition
would also tell us that deeper green roofs planted with herbaceous perennials and grasses would be better insulators and thus
save more energy than shallow sedum roofs. In theory, plant species with greater biomass and higher transpiration rates should
provide a greater cooling effect. This has been shown to be true
in some cases. However, in other situations this assumption is
not true.
MacIvor et al. (2016, Ecological Engineering 95:36-42)
observed that the lowest surface temperatures (2 ºC lower)
and air temperatures 15 cm above the surface (1.5 ºC lower)
occurred for a sedum plant community compared to a grasses
and meadow mix. Likewise, Franzaring et al. (2016, Ecological
Engineering 94:503-515) reported that monocultures of PhediLIVING ARCHITECTURE MONITOR / SPRING 2020 / 9
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Green Roofs - Living Architecture Monitor - Spring 2020
Table of Contents for the Digital Edition of Green Roofs - Living Architecture Monitor - Spring 2020
Table of Contents
Green Roofs - Living Architecture Monitor - Spring 2020 - 1
Green Roofs - Living Architecture Monitor - Spring 2020 - Cover1
Green Roofs - Living Architecture Monitor - Spring 2020 - Cover2
Green Roofs - Living Architecture Monitor - Spring 2020 - TOC
Green Roofs - Living Architecture Monitor - Spring 2020 - A1
Green Roofs - Living Architecture Monitor - Spring 2020 - 1
Green Roofs - Living Architecture Monitor - Spring 2020 - 2
Green Roofs - Living Architecture Monitor - Spring 2020 - Table of Contents
Green Roofs - Living Architecture Monitor - Spring 2020 - 4
Green Roofs - Living Architecture Monitor - Spring 2020 - 5
Green Roofs - Living Architecture Monitor - Spring 2020 - 6
Green Roofs - Living Architecture Monitor - Spring 2020 - 7
Green Roofs - Living Architecture Monitor - Spring 2020 - 8
Green Roofs - Living Architecture Monitor - Spring 2020 - 9
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Green Roofs - Living Architecture Monitor - Spring 2020 - 11
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Green Roofs - Living Architecture Monitor - Spring 2020 - 20
Green Roofs - Living Architecture Monitor - Spring 2020 - 21
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Green Roofs - Living Architecture Monitor - Spring 2020 - 27
Green Roofs - Living Architecture Monitor - Spring 2020 - 28
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Green Roofs - Living Architecture Monitor - Spring 2020 - 30
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Green Roofs - Living Architecture Monitor - Spring 2020 - 32
Green Roofs - Living Architecture Monitor - Spring 2020 - 33
Green Roofs - Living Architecture Monitor - Spring 2020 - 34
Green Roofs - Living Architecture Monitor - Spring 2020 - Cover3
Green Roofs - Living Architecture Monitor - Spring 2020 - Cover4
Green Roofs - Living Architecture Monitor - Spring 2020 - MBR
Green Roofs - Living Architecture Monitor - Spring 2020 - A2
Green Roofs - Living Architecture Monitor - Spring 2020 - A3
Green Roofs - Living Architecture Monitor - Spring 2020 - A4
https://www.nxtbook.com/dawson/greenroofs/lam_2020Winter
https://www.nxtbook.com/dawson/greenroofs/lam_2020Fall
https://www.nxtbook.com/dawson/greenroofs/lam_2020Summer
https://www.nxtbook.com/dawson/greenroofs/lam_2020Spring
https://www.nxtbook.com/dawson/greenroofs/lam_2019Winter
https://www.nxtbook.com/dawson/greenroofs/lam_2019Fall
https://www.nxtbook.com/dawson/greenroofs/lam_2019Summer
https://www.nxtbook.com/dawson/greenroofs/lam_2019Spring
https://www.nxtbook.com/dawson/greenroofs/lam_2018winter
https://www.nxtbook.com/dawson/greenroofs/lam_2018Fall
https://www.nxtbook.com/dawson/greenroofs/lam_2018summer
https://www.nxtbook.com/dawson/greenroofs/lam_2018spring
https://www.nxtbook.com/dawson/greenroofs/lam_2017winter
https://www.nxtbook.com/dawson/greenroofs/lam_2017fall
https://www.nxtbook.com/dawson/greenroofs/lam_2017summer
https://www.nxtbook.com/dawson/greenroofs/lam_2017Spring
https://www.nxtbook.com/dawson/greenroofs/lam_2016winter
https://www.nxtbook.com/dawson/greenroofs/lam_2016fall
https://www.nxtbook.com/dawson/greenroofs/lam_2016summer
https://www.nxtbook.com/dawson/greenroofs/lam_2016spring
https://www.nxtbook.com/dawson/greenroofs/lam_2015Winter
https://www.nxtbook.com/dawson/greenroofs/lam_2015fall
https://www.nxtbook.com/dawson/greenroofs/lam_2015summer
https://www.nxtbook.com/dawson/greenroofs/lam_2015spring
https://www.nxtbook.com/dawson/greenroofs/lam_2014winter
https://www.nxtbook.com/dawson/greenroofs/lam_2014fall
https://www.nxtbook.com/dawson/greenroofs/lam_2014summer
https://www.nxtbook.com/dawson/greenroofs/lam_2014spring
https://www.nxtbook.com/dawson/greenroofs/lam_2013winter
https://www.nxtbook.com/dawson/greenroofs/lam_2013fall
https://www.nxtbook.com/dawson/greenroofs/lam_2013summer
https://www.nxtbook.com/dawson/greenroofs/lam_2013spring
https://www.nxtbook.com/dawson/greenroofs/lam_2012fall
https://www.nxtbook.com/dawson/greenroofs/lam_2012summer
https://www.nxtbook.com/dawson/greenroofs/lam_2012spring
https://www.nxtbook.com/dawson/greenroofs/lam_2012winter
https://www.nxtbook.com/dawson/greenroofs/lam_2011fall
https://www.nxtbook.com/dawson/greenroofs/lam_2011summer
https://www.nxtbook.com/dawson/greenroofs/lam_2011spring
https://www.nxtbook.com/dawson/greenroofs/lam_2011winter
https://www.nxtbook.com/dawson/greenroofs/lam_2010fall
https://www.nxtbook.com/dawson/greenroofs/lam_2010summer
https://www.nxtbook.com/dawson/greenroofs/lam_2010spring
https://www.nxtbook.com/dawson/greenroofs/lam_2010winter
https://www.nxtbook.com/dawson/greenroofs/lam_2009fall
https://www.nxtbook.com/dawson/greenroofs/lam_2009summer
https://www.nxtbook.com/dawson/greenroofs/lam_2009spring
https://www.nxtbook.com/dawson/greenroofs/lam_2009winter
https://www.nxtbook.com/dawson/greenroofs/lam_2008fall
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