Crassulacean Acid Metabolism and Survival of Asexual Propagules of Sedum wrightii

Gravatt, Dennis A.

doi:10.1023/b:phot.0000015470.62261.48

Cited by 7 publications

(5 citation statements)

References 13 publications

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“…Many Sedum spp. have been identified as exhibiting some form of Crassulacean acid metabolism (CAM;Gravatt, 2003;Gravatt and Martin, 1992;Kluge, 1977;Lee and Kim, 1994;Sayed et al, 1994;Teeri et al, 1986). CAM is a unique form of photosynthetic carbon fixation.…”

Section: Plant Selectionmentioning

confidence: 99%

The Role of Extensive Green Roofs in Sustainable Development

Getter¹,

Rowe²

2006

HortSci

576

281

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As forests, agricultural fields, and suburban and urban lands are replaced with impervious surfaces resulting from development, the necessity to recover green space is becoming increasingly critical to maintain environmental quality. Vegetated or green roofs are one potential remedy for this problem. Establishing plant material on rooftops provides numerous ecological and economic benefits, including stormwater management, energy conservation, mitigation of the urban heat island effect, and increased longevity of roofing membranes, as well as providing a more aesthetically pleasing environment in which to work and live. Furthermore, the construction and maintenance of green roofs provide business opportunities for nurseries, landscape contractors, irrigation specialists, and other green industry members while addressing the issues of environmental stewardship. This paper is a review of current knowledge regarding the benefits of green roofs, plant selection and culture, and barriers to their acceptance in the United States. Because of building weight restrictions and costs, shallow-substrate extensive roofs are much more common than deeper intensive roofs. Therefore, the focus of this review is primarily on extensive green roofs.

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Section: Plant Selectionmentioning

confidence: 99%

The Role of Extensive Green Roofs in Sustainable Development

Getter¹,

Rowe²

2006

HortSci

576

281

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“…The genus Sedum is a popular choice among extensive green roofing projects as a result of its tolerance for drought Wolf and Lundholm, 2008), shallow substrate adaptability (Durhman et al, 2007;Emilsson, 2008), persistence (Köhler, 2006;Monterusso et al, 2005;Rowe et al, 2006), and ability to limit transpiration (Kluge, 1977;Lee and Kim, 1994), and store water (Gravatt, 2003;Teeri et al, 1986). However, even for such a wellsuited genus, substrate depth can influence the rate of substrate coverage and subsequent plant growth (Durhman et al, 2007;Getter and Rowe, 2008;Rowe et al, 2006).…”

mentioning

confidence: 99%

Substrate Depth Influences Sedum Plant Community on a Green Roof

Getter¹,

Rowe²

2009

horts

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Because the waterproofing membrane beneath green roofs is estimated to last at least 45 years, long-term plant performance beyond initial establishment is critical. Plants that survive initially on a green roof may not exist in the long term because of variability in climate and other factors. This study evaluated the effect of green roof substrate depth on substrate moisture, plant stress as measured by chlorophyll fluorescence, and plant community development and survival of 12 Sedum species over 4 years in a midwestern U.S. climate during 4 years of growth. Plugs of 12 species of Sedum were planted on 8 June 2005 and evaluated biweekly for absolute cover (AC). Most species exhibited greater growth and coverage at a substrate depth of 7.0 cm and 10.0 cm relative to 4.0 cm. For the species evaluated, substrate depths of at least 7.0 cm are highly recommended. AC of Sedum was significantly greater at this substrate depth than at 4.0 cm. Mean volumetric moisture content of the three substrate depths followed the same pattern as AC. When averaged over time, the 4.0-cm substrate depth held less moisture than depths of 7.0 or 10.0 cm, whereas the 7.0- and 10.0-cm substrate depths were statistically the same. Species exhibiting the greatest AC at all substrate depths were S. floriferum, S. sexangulare, S. spurium ‘John Creech’, and S. stefco. In general, species that are less suitable at these substrate depths are S. ‘Angelina’, S. cauticola ‘Lidakense’, S. ewersii, S. ochroleucum, and S. reflexum ‘Blue Spruce’.

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“…The genus Sedum is a popular choice among extensive green roofing projects due to its tolerance for drought and shallow substrate adaptability VanWoert et al 2005b;Rowe et al 2006a). Many Sedum species have been identified as exhibiting some form of Crassulacean Acid Metabolism (CAM; Kluge 1977;Teeri et al 1986;Gravatt and Martin 1992;Lee and Kim 1994;Sayed et al 1994;Gravatt 2003). CAM is an alternative pathway for photosynthetic carbon fixation whereby stomata open during the night to take up CO 2 and remain closed during the day so that transpirational water loss is reduced (Cushman 2001).…”

mentioning

confidence: 99%

Media depth influences Sedum green roof establishment

Getter

Rowe

2008

Urban Ecosyst

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Species selection and initial establishment of plants is critical for long term survival and health of green roofs. Plants that can withstand harsh environmental conditions and provide rapid coverage on extensive green roofs can reduce erosion, limit weed invasion, and provide a more aesthetically pleasing roof to satisfy customers. This study evaluated the effect of green roof substrate depth on initial establishment of 12 Sedum species in a Midwestern US climate. Plugs of 12 Sedum species were planted on 8 June 2005 and evaluated bi-weekly until first frost for absolute cover (AC) using a stainless steel point-frame transect. Most species exhibited greater growth and coverage at a depth of 7.0 and 10.0 cm relative to 4.0 cm. AC was highest for Sedum sarmentosum at all depths, but this species may be too aggressive. Other suitable species include Sedum floriferum, Sedum stefco, and Sedum spurium 'John Creech'. In general, species that are less suitable are Sedum 'Angelina', Sedum cauticola 'Lidakense', Sedum ewersii, Sedum ochroleucum, and Sedum reflexum 'Blue Spruce'. For the species tested, a minimum of 7.0 cm is highly recommended. With shallower substrates, S. sarmentosum and S. stefco will provide the fastest coverage.

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Crassulacean Acid Metabolism and Survival of Asexual Propagules of Sedum wrightii

Cited by 7 publications

References 13 publications

The Role of Extensive Green Roofs in Sustainable Development

The Role of Extensive Green Roofs in Sustainable Development

Substrate Depth Influences Sedum Plant Community on a Green Roof

Media depth influences Sedum green roof establishment

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