Mosses inhibit germination of vascular plants on an extensive green roof

Drake, Paige M.; Grimshaw-Surette, Hughstin; Heim, Amy; Lundholm, Jeremy

doi:10.1016/j.ecoleng.2018.04.002

Cited by 22 publications

(16 citation statements)

References 17 publications

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“…When the moss treatment x position interaction was not significant but the main effect of moss treatment was, we only tested for differences between the three levels of moss treatment and letters are displayed above lines connecting treatment means. vascular plant germination (Zamfir 2000, Serpe et al 2006, Jeschke and Kiehl 2008, Drake et al 2018), while at the same time they can increase the growth and survival of established plants (Pendleton et al 2003, Langhans et al 2009, Ferrenberg et al 2018. Our experiment showed that moss mats had positive effects on the germination and survival of Vulpia across the environmental gradient.…”

Section: Discussionmentioning

confidence: 61%

“…vascular plant germination (Zamfir 2000, Serpe et al 2006, Jeschke and Kiehl 2008, Drake et al 2018, while at the same time they can increase the growth and survival of established plants (Pendleton et al 2003, Langhans et al 2009, Ferrenberg et al 2018. Mosses and other components of biological soil crusts are often found to have neutral to negative effects on .…”

Section: Discussionmentioning

confidence: 99%

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Effects of native bryophytes on exotic grass invasion across an environmental gradient

Kleinhesselink

Cushman

2019

Ecosphere

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Understanding the role of native biodiversity in controlling exotic species invasion is a critical goal in ecology. In terrestrial plant communities, most research has focused on the effects of native vascular plants on invasion by exotic vascular plants. However, in many ecosystems, native bryophytes and other non-vascular plants are common and can affect the establishment, survival, and growth of vascular plants. A more complete picture of how native biodiversity affects exotic plant invasion demands that more studies measure the effects of native bryophytes on exotic vascular plants. Moreover, there is growing realization that the effects of native species on invaders can range from negative to positive and that a complete picture of interactions between native and exotic plants requires measuring interactions in multiple environments. We used both observational and experimental studies to quantify the effects of native bryophytes on vascular plants along a 200-m environmental gradient in a coastal dune in northern California. We found a positive association between vascular plants and bryophytes across the environmental gradient. Our experiments with two exotic annual grass species showed the effects of bryophytes to be speciesspecific and to vary with environmental context. Bryophytes facilitated the survival of one exotic grass species, Vulpia bromoides, at both ends of the environmental gradient. Bryophytes reduced the survival and inflorescence production of the other exotic grass, Bromus diandrus, at one end of the environmental gradient and had no effect at the other end. Our findings provide a test of the effects of native bryophytes on exotic vascular plant invasion and show that these effects can vary dramatically even across local environmental gradients.

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Effects of native bryophytes on exotic grass invasion across an environmental gradient

Kleinhesselink

Cushman

2019

Ecosphere

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“…The positive relationship between total plant cover, including moss cover, and precipitation depth was consistent with expectations since many moss species thrive in moist conditions. According to Drake et al 2018 , mosses can inhibit germination of plants on green roofs, thereby potentially limiting the amount of spontaneous colonization. Here, relatively high spontaneous vegetation cover was found to coexist with moss in Bergen.…”

Section: Discussionmentioning

confidence: 99%

Temperatures and precipitation affect vegetation dynamics on Scandinavian extensive green roofs

et al. 2020

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Standard succulent vegetation mixes developed mostly in temperate climates are being increasingly used on green roofs in different climate zones with uncertain outcome regarding vegetation survival and cover. We investigated vegetation on green roofs at nine temperate, cold, and/or wet locations in Norway and Sweden covering wide ranges of latitude, mean annual temperature, annual precipitation, frequencies of freeze-thaw cycles, and longest annual dry period. The vegetation on the roofs were surveyed in two consecutive years, and weather data were compiled from meteorological databases. At all sites we detected a significant decline in species compared to originally intended (planted/sown) species. Both the survival rate and cover of the intended vegetation were positively related to the mean annual temperature. Contrary to a hypothesis, we found that intended vegetation cover was negatively rather than positively related to mean annual precipitation. Conversely, the unintended (spontaneous) vegetation was favoured by high mean annual precipitation and low mean annual temperature, possibly by enabling it to colonize bare patches and outcompete the intended vegetation. When there is high mortality and variation in cover of the intended vegetation, predicting the strength of ecosystem services the vegetation provides on green roofs is difficult. The results highlight the needs for further investigation on species traits and the local factors driving extinction and colonizations in order to improve survivability and ensure a dense vegetation throughout the successional stages of a green roof.

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“…Bryophytes such as moss are increasingly being studied for urban applications, such as extensive green roofs [57,58], storm-water management [59], and greening of building structures [60]. Few studies investigate its use in particle capture.…”

Section: Discussionmentioning

confidence: 99%

Roadside Moss Turfs in South East Australia Capture More Particulate Matter Along an Urban Gradient than a Common Native Tree Species

et al. 2019

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Urbanisation largely consists of removing native vegetation. Plants that remain interact with air quality in complex ways. Pollutants can be detrimental to plant growth; plants sometimes reduce air quality, yet some species also improve it through phytoremediation. A common pollutant of concern to human health in urban areas is particulate matter (PM), small particles of solid or liquid. Our study compared roadside moss turfs with leaves of a common Australian tree species, Pittosporum undulatum, in their ability to capture PM along an urban gradient. We sampled nine sites, three in each of three levels of urbanisation: low, medium, and high according to road type (freeway, suburban road, quiet peri-urban road). In addition, we deployed a PM monitor over a two-week period in one site of each urban level to provide concentrations of PM2.5. We used chlorophyll fluorescence (Fv/Fm; maximum quantum yield of photosystem II) as a measure of plant stress. We extracted PM in three size fractions using a filtration and washing technique with water and chloroform. Site averages for moss turfs were between 5.60 and 33.00 mg per g dry weight for total PM compared to between 2.15 and 10.24 mg per g dry weight for the tree leaves. We found that moss was more sensitive to increasing urbanisation, both in terms of trapping proportionately more PM than the leaves, and also in terms of photosynthetic stress, with moss Fv/Fm declining by a site average of 40% from low to high urban “class” (0.76 to 0.45). Our study highlights the stressors potentially limiting moss persistence in cities. It also demonstrates its ability to trap PM, a trait that could be useful in urban applications relating to urban greening or air quality.

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Mosses inhibit germination of vascular plants on an extensive green roof

Cited by 22 publications

References 17 publications

Effects of native bryophytes on exotic grass invasion across an environmental gradient

Effects of native bryophytes on exotic grass invasion across an environmental gradient

Temperatures and precipitation affect vegetation dynamics on Scandinavian extensive green roofs

Roadside Moss Turfs in South East Australia Capture More Particulate Matter Along an Urban Gradient than a Common Native Tree Species

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