Regeneration of Native Plant Communities Following Mineral Sand Mining PDF Download

Author: Paul J. R. Broese van Groenou
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ISBN:
Category : Coastal plants
Languages : en
Pages : 143

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Author: Karen Davis Holl
Publisher:
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Category : Abandoned mined lands reclamation
Languages : en
Pages : 8

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Author: Ray W. Brown
Publisher:
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Category : Native plants for cultivation
Languages : en
Pages : 56

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Methods for restoring native plant communities on acidic mine spoils at high elevations were evaluated in a gbsdemonstration area gcs in the New World Mining District of southern Montana. Research plots installed in 1976 were assessed for 22 years and compared with adjacent native reference plant communities. A 1.5-acre (0.61-ha) area of mine spoils was shaped and treated with hydrated lime, organic matter, and fertilizer. The area was then seeded heavily with five native grasses collected from adjacent native plant communities. Natural seed rain, transplanting, refertilization, and use of introduced species were also studied. During periods of fertilization, biomass and cover were twofold greater than in adjacent native reference communities in some years, but then rapidly declined to levels observed in native reference communities. Natural succession was accelerating within the demonstration area toward formation of a native community with characteristics similar to adjacent reference areas. Soil genesis was progressing and a soil gbsA gcs horizon was developing. Use of native seral species appears necessary for long-term formation of a self-sustaining natural community. Both transplanting and natural seed rain on treated spoils resulted in significantly lower biomass and cover levels than on the seeded area. Our data demonstrate that acidic mine spoils, such as in the New World area, can be treated successfully in-place with lime, organic matter, and fertilizer, and then seeded with a mixture of native seral grasses, followed by surface mulching with erosion blanket. Capping with native soils is unnecessary. Reclamation principles and procedures are summarized.

Author: Kathryn Aubrey Villazon
Publisher:
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Category :
Languages : en
Pages :

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ABSTRACT: Because Florida's natural ecosystems are increasingly invaded by exotic and undesirable plant species, invasive species removal is a major part of ecosystem restoration, and revegetation efforts after invasive species clearing is often necessary. Invasive species removal can be achieved through mechanical, cultural, chemical, or biological means. Few studies have addressed methods for successful native plant recolonization after invasive species removal using revegetation strategies. Different techniques for native species establishment were investigated in formerly invaded hydric and mesic-xeric ecosystems. The hydric site, consisting of two marl prairie ponds, and a mesic-xeric site, an abandoned phosphate mine, were both initially monotypic stands of Salix caroliniana Michx. (coastalplain willow) and Imperata cylindrica (L.) P. Beauv. (cogongrass), respectively. Following removal of the invasive species either by mechanical or chemical methods, we investigated different revegetation techniques. At the hydric site, the effects of two planting densities, two elevations, and two different propagule sizes on plant survival and volume of installed native plants were researched.

Author: Australasian Institute of Mining and Metallurgy. Conference
Publisher:
ISBN:
Category : Political Science
Languages : en
Pages : 452

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Author: N. C. W. Beadle
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Category : Science
Languages : en
Pages : 732

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Author: Peter J. Clarke
Publisher:
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Category : Coastal plants
Languages : en
Pages : 120

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Author: Joseph Eugene Settles
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Category : Plant communities
Languages : en
Pages : 204

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Author:
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Category : Forest regeneration
Languages : en
Pages : 200

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Author: Ashley Stevenson Grant
Publisher:
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Category : Electronic dissertations
Languages : en
Pages :

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Road decommissioning is increasingly recognized as a critical first step in the restoration of terrestrial and aquatic habitats. In the past two years alone, the United States Congress has appropriated $90 million for road removal and watershed restoration. Despite this relatively large public investment, little is known about the efficacy or ecological effects of road-removal practices. One particularly important issue is the impact of post-road-removal revegetation strategies. This study evaluated 1) short-term effects of road decommissioning on plant community composition, 2) effects of seed-mix seed origin (native vs. nonnative), species diversity, and seeding density on vegetative establishment, and 3) impact of overstory canopy and coarse woody debris on revegetation success on recently decommissioned roads. Total vegetative cover declined by 60% one-year after decommissioning, with nonnative plants showing the greatest declines (ca. 90%). Although managers often justify the use of nonnative seed mixes by the need for rapid establishment of plants on disturbed sites, we did not find significant differences in percent cover of total vegetation between plots seeded with native versus nonnative species, one year after treatment. Furthermore, cover of native species was significantly higher on plots seeded with natives compared to other treatment plots (12.3% vs. 7.8%, respectively). On treatments seeded with nonnative species, 18% of total vegetative cover was due to cover of seeded species; in comparison, seeded species accounted for 43% of total vegetative cover on native treatments. These findings suggest that native seed mixes actually may outperform nonnative ones in terms of vegetative establishment after disturbance associated with road removal.