Roadside revegetation in Glacier National Park, USA: effects of herbicide and seeding treatments

  • Published source details Tyser R.W., Asebrook J.M., Potter R. & Kurth L.L. (1998) Roadside revegetation in Glacier National Park, USA: effects of herbicide and seeding treatments. Restoration Ecology, 6, 197-206.


This study is summarised as evidence for the following.

Action Category

Sow or plant nurse plants (alongside seeding/planting of grassland species)

Action Link
Grassland Conservation
  1. Sow or plant nurse plants (alongside seeding/planting of grassland species)

    A replicated, paired, controlled study in 1992–1995 in five former prairie sites destroyed by road widening in Montana, USA (Tyser et al. 1998) found that sowing seeds of nurse plants alongside that of grassland species did not alter forb or grass cover. Cover of native forbs did not differ significantly between areas where nurse plant seeds were sown alongside seeds of grassland species (2.8–10.6%) and areas where seeds of grassland species were sown without nurse plant seeds (3.5–8.1%). The same pattern was true for non-native forbs (nurse: 3.8–21.4%; no nurse: 2.9–22.7%), native grasses (nurse: 7.8–10.0%; no nurse: 5.3–12.1%), and non-native grasses (nurse: 19.4–24.8%; no nurse: 14.1–29.1%). In summer 1992, after construction of a road, original topsoil was replaced at the five sites. In each site, two blocks containing two 8 × 4 m plots were established. In autumn 1992 or 1993, seeds of the nurse plant Triticum × Agropyron were sown with native seeds in one plot, and native seeds, but no nurse plant seed, was sown in one plot. In October 1992, all plots were sprayed with a mixture of wood mulch, tackifier, and nitrogen fertilizer. Vegetation cover of all species was estimated in July 1995 using five 50 × 20 cm quadrats in each plot.

    (Summarised by: Philip Martin)

Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 21

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape ProgrammeRed List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Mauritian Wildlife Supporting Conservation Leaders
Sustainability Dashboard National Biodiversity Network Frog Life The international journey of Conservation - Oryx Cool Farm Alliance UNEP AWFA Bat Conservation InternationalPeople trust for endangered species Vincet Wildlife Trust