Study

Woody encroachment removal from Midwestern oak savannas alters understory diversity across space and time

  • Published source details Brudvig L.A. (2010) Woody encroachment removal from Midwestern oak savannas alters understory diversity across space and time. Restoration Ecology, 18, 74-84

Actions

This study is summarised as evidence for the following.

Action Category

Thin trees within forests: effects on understory plants

Action Link
Forest Conservation
  1. Thin trees within forests: effects on understory plants

    A replicated, controlled study in 2002-2005 in an oak Quercus spp. savanna in Iowa, USA (Brudvig 2010) found that cutting all non-oak trees increased species richness. Species richness/1 m2 (non-oaks cut: 18; uncut: 10) as well as species richness of grasses (non-oaks cut: 3; uncut: 1) and woody plants (non-oaks cut: 8; uncut: 4) were higher in non-oaks cuts than in uncut plots. Diversity (Simpson's index non-oaks cut: 8; uncut: 5) and forb species richness (non-oaks cut: 7; uncut: 4) were similar between treatments. The percentage of native species was higher in uncut plots (non-oaks cut: 94%; uncut: 99%). Data were collected in 2004-2005 in 11-21 plots (1 × 1 m) at each of four non-oaks cut (all non-oak trees >1.5 m tall removed in 2002-2003) and four uncut sites (1.5-3.3 ha).

     

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