Showing papers on "Native plant published in 1987"

Application of successional theory to tundra restoration: a review

Abstract: Life-history traits of individual species, competitive interactions, and facilitation all contribute to the pattern and rate of succession in tundra ecosystems. An understanding of these natural successional processes will permit the development of effective strategies for restoration of disturbed areas in tundra. In mesic disturbed sites, the soil organic mat remains, providing a source of buried seed and vegetative propagules as well as a store of nutrients. Except where surface erosion is severe, natural succession can proceed quite rapidly, and sowing of exotic grasses is likely to inhibit rather than promote the establishment of native plants. By contrast, revegetation of xeric disturbed sites is often restricted by inadequate supplies of seed, nitrogen, and/or water. Sowing or planting may facilitate the invasion of native plants by increasing nutrient availability, especially if species with symbiotic nitrogen fixation are used. Where erosion hazards are severe, planting may be necessary for engineering reasons, regardless of its effect on the establishment of native plants.

Sunflowers: Their History and Associated Insect Community in the Northern Great Plains

Abstract: The sunflower, Heliantbus annuus var. macrocarpus (DC.) Ckll., is the only row crop in the northern Great Plains that coexists with its native congeners, Because of this unique ecological situation, entomological, pathological, and ornithological problems have frequently developed in cultivated sunflowers. Most crops are most successfully cultivated in areas distant from their origin, isolated from the pest organisms with which they have evolved. Insects and pathogens, which move freely between the native plants and the cultivated crop, cause most production problems in sunflowers.

Conservation opportunities on a highly modified Island: Mana Island, Wellington, New Zealand

Abstract: Mana Island (217 ha) provides opportunities for conservation despite over 150 years of farming. It is free from all introduced mammals except mice. It supports native coastal communities representative of the region and already has nationally threatened plants and animals. To take best advantage of these opportunities, it is suggested that: the present native plants, animals and communities are protected; part of the island is revegetated; selected species of threatened native plants and animals are introduced; and the island and its natural and human history are used for education, interpretation and recreational enjoyment. Attention is drawn to some unanswered questions and potential conflicts associated with these management proposals.

Cultivating Native Plants: The Legal Pitfalls

Abstract: If you purchase native plants you might break the law and, at the same time unknowingly contribute to the demise of wild plant populations, since collection from the wild is seldom adequately licensed or controlled. By following a few simple rules, however, you can avoid the legal and ethical pitfalls of buying (and collecting) native plants for use in a garden, for scientific research, or for horticultural display. In the United States, many laws protect species of plants or regulate activities that involve them. The laws range from strict prohibitions of the collection and sale of protected species to local regulations aimed at maintaining scenic beauty. It is important to know what these laws are.

Cultivating Native Plants: The Possibilities

Abstract: the botanical garden of the New England Wild Flower Society (NEWFS) in Framingham, Massachusetts-to enjoy and to learn about the native plants of North America, for example. Every day the Garden receives numerous requests for information about native plants. The general public wants to know how to select wildflowers for specific situations, how to cultivate them successfully, and where to buy seeds and plants-as well as what to do when wild populations of special plants are threatened by development proj-