Innovations in Tidal Marsh Restoration

Bowers, Jon

doi:10.3368/er.13.2.155

Cited by 4 publications

(4 citation statements)

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“…Kenilworth Marsh (lat 38°549500N, long 76°569400W), located about 0.8 km upstream of Kingman Marsh along the Anacostia River in Washington, D.C., was restored in 1992-1993 (7 years prior to Kingman Marsh) using dredge material to raise elevations to levels suitable for wetland vegetation (Bowers 1995 Creek is only 0.4 ha, and the three transects placed there span most of the site). Transects were generally located in interior marsh areas away from large tidal channels.…”

Section: Study Sitesmentioning

confidence: 99%

“…To provide a context for evaluating results from Kingman Marsh, we also studied seed banks at an older restored urban wetland (Kenilworth Marsh) and two reference wetlands, one urban (Dueling Creek) and one nonurban (Patuxent Marsh). Kenilworth Marsh (lat 38°549500N, long 76°569400W), located about 0.8 km upstream of Kingman Marsh along the Anacostia River in Washington, D.C., was restored in 1992-1993 (7 years prior to Kingman Marsh) using dredge material to raise elevations to levels suitable for wetland vegetation (Bowers 1995). The urban reference site, Dueling Creek (lat 38°559280N, long 76°569290W), is a remnant 0.41 ha tidal freshwater marsh located about 0.8 km upstream from Kenilworth Marsh along Dueling Creek, a small tributary to the Anacostia River.…”

Section: Study Sitesmentioning

confidence: 99%

“…The seed bank is an important component of wetland plant community dynamics (van der Valk 1981;Leck 1989), particularly in tidal freshwater marshes (Leck & Simpson 1995;Baldwin & DeRico 1999;Baldwin et al 2001). Standing vegetation composition in tidal freshwater marshes is strongly influenced by seed availability at the site (Parker & Leck 1985;Odum 1988;Leck 1989), with different species having different degrees of dependence on seed (Leck & Simpson 1987, 1995. The seed bank (i.e., buried viable seeds and propagules) is determined by the production of seed from past and current vegetation and the seed longevity in the site (van der Valk & Pederson 1989) and possibly develops over decades (Harper 1977).…”

Section: Introductionmentioning

confidence: 99%

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Rapid Seed Bank Development in Restored Tidal Freshwater Wetlands

Neff

Rusello

Baldwin

2009

Restoration Ecology

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Studies of seed bank development have rarely been included in evaluations of wetland restoration. We compared the seed bank of a recently restored tidal freshwater marsh in Washington, D.C., Kingman Marsh, with seed banks of another restored site (Kenilworth Marsh) and two reference marshes (Dueling Creek and Patuxent Marsh). The density and richness of emerging seedlings from Kingman Marsh seed bank samples increased from less than 4 seedlings and 2 taxa/90-cm 2 sample in 2000 (the year of restoration) to more than 130 seedlings and 10 taxa/90-cm 2 sample in 2003. The most important seed bank taxa at Kingman Marsh included Cyperus spp., Juncus spp., Lindernia dubia, Ludwigia palustris, and the non-native Lythrum salicaria. These taxa are not abundant in most mid-Atlantic tidal freshwater marshes but are almost identical to those described for a created tidal freshwater wetland in New Jersey. Seed banks of both the restored sites contained few seeds of several important species found at the reference sites. Flooding had a significant negative effect on emerging seedling density and taxa density, suggesting that slight decreases in soil elevation in restored wetlands will dramatically decrease recruitment from the seed bank. Because seed banks integrate processes affecting growth and reproduction of standing vegetation, we suggest that seed banks are a useful metric of wetland restoration success and urge that seed bank studies be incorporated into monitoring programs for restored wetlands.

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Section: Study Sitesmentioning

confidence: 99%

Section: Study Sitesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rapid Seed Bank Development in Restored Tidal Freshwater Wetlands

Neff

Rusello

Baldwin

2009

Restoration Ecology

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“…Restoration of TFW on the East Coast of the United States often involves excavation of upland soils or placement of dredged materials in open water regions to create platforms for plant growth [16]. The beneficial use of dredged material is sometimes a motivation and an opportunity for TFW wetland restoration [24,25].…”

Section: Introductionmentioning

confidence: 99%

Herbivory by Geese Inhibits Tidal Freshwater Wetland Restoration Success

et al. 2022

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Experimental results from a multi-year exclosure study (2009–2015) demonstrate strong effects of geese on plant cover and species diversity in an urban, restored tidal freshwater wetland. Access by geese inhibited plant establishment and suppressed plant diversity, particularly of annual plant species. Our experimental results demonstrate that the protection of newly restored tidal freshwater wetlands from geese is a make-or-break management activity that will determine the composition and long-term persistence of vegetation at the site. The causal herbivore, in this case, was resident, non-migratory Canada geese (Branta canadensis), which have increased dramatically over the last several decades and had high population densities throughout the study period. These findings suggest that management activities to reduce the population sizes of non-migratory goose populations will support greater wetland plant diversity.

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Baldwin

Derico

1999

Urban Ecosystems

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Innovations in Tidal Marsh Restoration

Cited by 4 publications

References 0 publications

Rapid Seed Bank Development in Restored Tidal Freshwater Wetlands

Rapid Seed Bank Development in Restored Tidal Freshwater Wetlands

Herbivory by Geese Inhibits Tidal Freshwater Wetland Restoration Success

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