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Effects of landfill gas on subtropical woody plants

1992, Biological Conservation

225 legislation. Relations between conservationists and farmer, forester, fisheries and urban growth are a recurrent theme. The author queries the achievements of both government and conservation bodies at a time of global conscience and the would-be greening of the environment.-P.JJarvis understand this phenomenon requires the collection of geographical and botanical information. Use of remote sensmg andgeographic information system technology, would provide the fastest and most precise way to acquLre, process, and analyze these data.

Selected Abstracts legislation. Relations between conservationists and farmer, forester, fisheries and urban growth are a recurrent theme. The author queries the achievements of both government and conservation bodies at a time of global conscience and the would-be greening of the environment. -P.JJarvis 92Z/00038 The Basingstoke Canal: a wildlife survival strategy C. West & S. Church, ECOS: a Review of Conservation, 12(1), 1991, pp 40-43. Reviews the clash of interests over use of the canal for conservation or for recreational boating which, by requiring dredging and restoration, will destroy much of the canal's wildlife value. Unrestricted boating would cause the loss of an irreplaceable wildlife resource. -A.Gilg 92Z/00039 225 understand this phenomenon requires the collection of geographical and botanical information. Use of remote sensmg andgeographic information system technology, would provide the fastest and most precise way to acquLre, process, and analyze these data. -from Author 92Z/00042 The development and implementation of wildlife utilization on sustainable yield: the Zimbabwe experience W. M. Makombe, in: Resource Technology 90. Proc. second international symposium on advanced technology in natural resources management, Washington, DC, 1990, ed G.J. Buhyoff, (ASPRS), 1991, pp 514-518. Zimbabwe is a leading wildlife conservation state within Africa, and its policies which regard wildlife as a national heritage which should be enjoyed by its citizens through both consumptive and non-consumptive uses have had much success. -from Author Landscape-ecological mapping of the Neth- erlands K. J. Canters, C. P. Den Herder, A. A. De Veer, P. W. M. Veelenturf & R. W. De Waal, Landscape Ecology, 5(3), 1991, pp 145-162. The Landscape-ecological Mapping of the Netherlands roject started in 1983 with the aim of establishing a dscape-ecological database for use in developing and evaluating national land-use plans. The project, working with grid cells of I kin 2, has four working objectives: 1) development of mapping potential for basic landscape-ecological data; 2) assessment of susceptibility to interventions, 3) evaluation of significance for nature conservation; and 4) production of vulnerability maps, as a combination of susceptibility and significance. In addition to information on soil, groundwater, ecotopes, flora and fauna, the database also incorporates information on physiographical features and entire landscapes. The resulting database is a geographic information system. This article describes the second phase of the project (1985-1989), covering the 'Randstad' area. -Authors 922/00040 Analysis, synthesis, mapping and interpretation of grasslands in landscape-ecological planning (exemplified by the Z a m a g u r i e - Z d i a r area) H. Ruzickova, Ecology (CSFR), 10(1), 1991, pp 65-76. The ecologically optimum proposition is to use the major part of the territory as intensive grassland, maintaining a art of the territory with traditional management and with a igh biological and landscape-ecological value. -from Author ~ 922/00041 The role of technology in solving a manmade b a r r i e r - c o r r i d o r p r o b l e m in H u n g a r y ' s p a r k s and reserves: the conflict between roads and amphibi- ans M. Puky, in: Resource Technology 90. Proc. second international symposium on advanced technology in natural resources management, Washington, DC, 1990, ed G.J. Buhyoff, (ASPRS), 1991, pp 353-358. Effective population size was relatively lower, compared to a control site, where heavy traffic selects the animals. To Restoration ecology 922/00043 Restoration of coral reefs in Pacific Costa Rica H. M. Guzman, Conservation Biology, 5(2), 1991, pp 189-195. At some reefs along the Pacific coast of Costa Rica, 100% mortality of the dominant coral (Pocillopora spp.) occurred in shallow water. Surviving individuals for some pocilloporid species are extremely small, and reef recovery by sexual or asexual means has been lowered. A restoration experiment was conducted in two different shallow habitats inside a marine biological reserve. Coral fragments imported from nearby reefs were transplanted onto dead reef frameworks; after 3 yr survivorship.was 79%-83%. Fragmentation caused a 41-115% increase m new colonies. -from Author 922/00044 plants G. Y. S. Effects of landfill gas on subtropical woody Chan, M. H. Wong& B. A. Whitton, Environmental Management, 15(3), 1991, pp 411-431. Describes the influence of landfill gas on tree growth in the field at Gin Drinkers' Bay landfill, Hong Kong. Acacia confusa, Albizzia iebbek, Aporusa chinensi$, Bombax malabaricum, Castanopsis fissa, Liquidambar formosana, Litsea glutinosa, Machilus breviflora, Pinus elliottii and Tristania conferta were transplanted to two sites, one with a high concentration of landfill gas in the cover soil, the other with a relatively low concentraton. A strong negative correlation between tree growth and landfill gas concentration was observed. The adventitious root growth of Aporusa, Bombax, Machilus and Tristania was stimulated by the gas, with shallow root systems being induced. A very high CO 2 concentration in cover soil limits the depth of the root system. Trees with a shallow root system become very susceptible to water stress. Acacia confusa, Albizzia lebbek, and Tristania conferta axe suited for growth on subtropical completed landfills mainly due to their gas tolerance and/or drought tolerance. -from Authors