Effects of slash on herbaceous communities in pinyon–juniper woodlands of northern Arizona

  • Published source details Stoddard M.T., Huffman D.W., Alcoze T.M. & Fulé P.Z. (2008) Effects of slash on herbaceous communities in pinyon–juniper woodlands of northern Arizona. Rangeland Ecology & Management (previously Journal of Range Management 1948-2004), 61, 485-495.


This study is summarised as evidence for the following.

Action Category

Add organic matter

Action Link
Forest Conservation
  1. Add organic matter

    A replicated, controlled study in 2003-2005 in temperate coniferous forest in Arizona, USA (Stoddard et al. 2008) found that addition of pruned trees had mixed effects on cover of understory plant groups. Total understory plant cover was higher in the pruned trees treatment in seeded plots in site #1 (pruned trees: 12.4; control: 3.7%). Exotic-plant cover was lower in the pruned trees treatment in seeded (pruned trees: 0.1; control: 1.9%) and non-seeded plots (pruned trees: 0.2; control: 1.6%) in site #2. In both sites, in seeded plots, cover (pruned trees: 1.6-3.9; control: <0.2%) and seed-density (pruned trees: 7-28; control: 2-3/m2) of grasses was higher in pruned trees treatment plots. Total understory plant cover in site #2 (pruned trees: 11.7-16.3%; control: 11.0-16.1%) and in non-seeded plots in site #1 (pruned trees: 10.7; control: 8.1%) was similar between treatments. Exotic-plant cover in site #1 (pruned trees: 0.0-0.3; control: 0.0%) was similar between treatments. Cover (pruned trees: 0.2-0.9; control: <0.2%) and seed-density (pruned trees: 2-9; control: 0/m2) of grasses in non-seeded plots were similar between treatments. Two pairs of 1 m2 treatment plots: control and pruned trees (at 9 kg/m2) were established within 15 forest openings (0.02-0.05 ha) at each of two sites; one pair of seeded (10 g/m2 mixture of four native grasses seeded in 2003) and one pair of non-seeded plots. Data were collected in 2005.


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 18

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 Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust