Long-Term Assessment of Alternative Strategies for the Restoration of Floodplain Forest in the Presence of an Invasive Grass, Phalaris arundinacea
Autor: | Ariane L. Peralta, Cassandra S. Rodgers, Jeffrey W. Matthews, Susan McIntyre |
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Rok vydání: | 2019 |
Předmět: |
0106 biological sciences
Biomass (ecology) geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Ecology Floodplain 010604 marine biology & hydrobiology Reforestation Vegetation Biology Phalaris arundinacea biology.organism_classification 01 natural sciences Basal area Agronomy Environmental Chemistry Afforestation Species richness 0105 earth and related environmental sciences General Environmental Science |
Zdroj: | Wetlands. 40:655-665 |
ISSN: | 1943-6246 0277-5212 |
Popis: | In 1998, a 6.1-ha wetland restoration project along the Rock River, IL, USA was designed to test five afforestation methods on former agricultural land, including planting bareroot trees, balled-and-burlapped trees, seedlings, acorns, or allowing natural regeneration. Fifteen years later, we assessed vegetation at the site to determine the effectiveness of alternative strategies and compare treatments to an adjacent floodplain forest. We also compared the cost of treatments to determine whether long-term restoration outcomes justified initial costs. After 15 years, lower cost treatments (acorn plantings and passive restoration) were dominated by dense reed canarygrass (Phalaris arundinacea) with sparse trees, whereas higher cost treatments (bareroot and balled-and-burlapped tree plantings) had developed closed tree canopies, and tended to have greater plant species richness, tree basal area, and density of stems >7.5-cm diameter. For every additional $10,000 per ha spent on restoration, predicted richness increased by 1 species per 250-m2 plot, predicted P. arundinacea biomass decreased by 61 g m−2, and predicted tree basal area increased by 3 m2 ha−1. Although some studies have indicated that passive regeneration alone is effective for afforestation, restoration of floodplains in the presence of P. arundinacea will require a more intensive approach. |
Databáze: | OpenAIRE |
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