e-journal

Evaluating Restoration Methods across a Range of Plant Communities Dominated by Invasive Annual Grasses to Native Perennial Grasses

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Prairies are imperiled habitats, with remnants being generally small and often existing in isolation. Invasive plants have the potential to invade not just the edge of small remnants but also the interior because smaller remnants experience greater edge effects than do large, contiguous prairies. Additionally, invasive plants limit recruitment of native plants, which can arrest secondary succession. We proposed to assess techniques for restoration that included removing annual grasses and supplementing native species recruitment with seeding of native grass and forb species. We also assessed the effect of specific factors affecting recruitment: soil moisture and seed predation. Treatments included broadcast, spot, or no application of the herbicides imazapic and glyphosate and with or without seeding plus mulch. With treatments nested within each of three plant communities, ranging from annual- to perennialdominated communities, in four blocks per community, plant characteristics (percentage of cover and plant density), soil moisture availability, and seed-predation losses were measured along a plant community gradient within one season at two locations. A combination of broadcast herbicide application and seeding with mulching was found to
be more effective in reducing annual grasses and enhancing the establishment of native grass species in
predominately annual and mixed communities (annuals and perennials). Spot herbicide application was effective in predominately perennial communities, whereas only seeding native species did not improve recruitment. Although seed predation reduced seedling recruitment, mulch provided seed protection and enhanced soil moisture retention. Plant community response to imposed treatments differed among communities, suggesting that a decision support tool would facilitate management decisions tailored for each plant community. The decision tool would be useful to ensure that appropriate treatments are applied and that specific factors affecting recruitment, such as seed predation and soil moisture, are addressed.

Nomenclature: Glyphosate; imazapic.

Key words: Invasive species, plant community, restoration, seed predation, soil moisture

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Ketersediaan

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Informasi Detail

Judul Seri

Invasive Plant Science and Management

No. Panggil

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Penerbit

New York : Weed Science Society America., 2011

Deskripsi Fisik

Invasive Plant Science and Management 2011 4:306–316

Bahasa

English

ISBN/ISSN

DOI: 10.1614/IPSM-D-

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

2011 4

Subjek

PERTANIAN.
ILMU GULMA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

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