Establishment of native grasses and their impact on exotic annuals in degraded box gum woodlands

Ian Cole, Suzanne Prober, Ian Lunt, Terry B Koen

Research output: Contribution to journalArticle

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Abstract

Restoration goals often involve the addition of new species to resident, degraded communities but in box gum woodlands such restoration is often constrained by competition from persistent exotic annuals that control critical ecological processes. Nutrient reduction (via carbon addition) and seed bank depletion are two approaches to reduce competition from exotic annuals but to be effective these treatments must allow establishment of species such as native grasses. This experiment was conducted in two degraded Austrostipa understoreys in the box gum woodlands of south-east Australia. It compares the effects of carbon addition (sugar), seed depletion (spring burning or spring grazing) and combinations of carbon addition and seed depletion treatments on the establishment of C3 and C4 native grasses, and measured the effects of their establishment on soil nitrate concentration and exotic annuals.
Original languageEnglish
Pages (from-to)632-642
Number of pages11
JournalAustral Ecology: a journal of ecology in the Southern Hemisphere
Volume42
Early online dateFeb 2017
DOIs
Publication statusPublished - Sep 2017

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woodlands
woodland
grass
grasses
Austrostipa
carbon
seed
seed bank
buried seeds
seeds
understory
sugar
grazing
nitrates
new species
nitrate
sugars
nutrient
nutrients
soil

Cite this

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abstract = "Restoration goals often involve the addition of new species to resident, degraded communities but in box gum woodlands such restoration is often constrained by competition from persistent exotic annuals that control critical ecological processes. Nutrient reduction (via carbon addition) and seed bank depletion are two approaches to reduce competition from exotic annuals but to be effective these treatments must allow establishment of species such as native grasses. This experiment was conducted in two degraded Austrostipa understoreys in the box gum woodlands of south-east Australia. It compares the effects of carbon addition (sugar), seed depletion (spring burning or spring grazing) and combinations of carbon addition and seed depletion treatments on the establishment of C3 and C4 native grasses, and measured the effects of their establishment on soil nitrate concentration and exotic annuals.",
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Establishment of native grasses and their impact on exotic annuals in degraded box gum woodlands. / Cole, Ian; Prober, Suzanne; Lunt, Ian; Koen, Terry B.

In: Austral Ecology: a journal of ecology in the Southern Hemisphere, Vol. 42, 09.2017, p. 632-642.

Research output: Contribution to journalArticle

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