By Stephen R. Gliessman (auth.), Stephen R. Gliessman (eds.)
***e FACHGEBIET*** Agriculture, Agronomy, Forestry, Horticulture, Soil technology, Environmental technology (esp. Plant Ecology), Agricultural Chemistry, Agricultural Economics, average source Economics, Sociology, and Anthropology ***INTERESSENTENGRUPPE*** Of curiosity to researchers, scholars, and pros within the above fields.- point: Technical ebook, Monograph ***URHEBER*** S.R.Gliessman, collage of California, Santa Cruz, CA (Ed.) ***TITEL*** Agroecology ***UNTERTITEL*** Researching the Ecological foundation for Sustainable Agriculture ***BIBLIOGRAPHISCHE-ANGABEN*** 1990. XIV, 380 pp. 87 figs. (Ecological reviews. Eds.: W.D. Billings, F. Golley, O.L. Lange, J.S. Olson, H. Remmert. Vol. seventy eight) Hardcover DM 198,- ISBN 3-540-97028-2 ***CONTENTS*** Contents: Part I: easy Ecological suggestions in Agroecosystems.- Part II: Agroecosystem layout and Management.- Index. ***LANGTEXT*** This booklet offers an advent to investigate methods within the rising interdisciplinary box of agroecology. It demonstrates in a chain of overseas case reports the best way to mix the extra production-oriented concentration of the agronomist with the extra systems-oriented standpoint of the ecologist. varied methodologies for quantifying and comparing agroecosystem sustainability are offered and analyzed. prime researchers within the box supply examples of the range and complexity of agroecological study, starting from archeology to insect ecology, and look at layout and administration of agroecosystems that span from the humid tropics to temperate areas. This well timed evaluation should be of serious price to ecologists, agronomists, geographers, foresters, anthropologists, and others concerned with constructing a sustainable foundation for land use, administration, and conservation around the globe. ***RS-ENDE*** RS 11/89 PREX ***RS-NOTIZEN*** NY/Dr. Czeschlik
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Additional info for Agroecology: Researching the Ecological Basis for Sustainable Agriculture
261:40-42. R. 1988. Some ecological relationships of traditional agroecosystems in the lowland humid tropics of southern Mexico. In Agroecosistemas de Mexico: Pasado y Presente, edited by A. R Gliessman. Mexico City: Secretaria de Educaci6n Publica (SEP). Goodman, D. 1975. The theory of diversity-stability relationships in ecology. Quart. Rev. BioI. 50:237-266. , and R Hale. 1974. Increasing natural enemies through use of supplementary feeding and non-target prey. G. A. Harris. Jackson, Mississippi:Univ.
Some ants have aggressive reactions to colony disturbance and thereby interfere with agricultural work. The Old World tailor ant Oecophylla and the New World members of the Solenopsis fire ant complex are often annoying to field workers in this manner (Lofgren et al. 1975; Kranz et al. 1977). Territorial species of ants may lower the overall harvest rate of pests by excluding other ant species from their territories. The occurrence of ant "mosaics," nonoverlapping territories of dominant species, is now firmly established and probably a general "rule" for ant species distributions in the tropics (Leston, 1978).
In Costa Rica, S. geminata and other ants are important predators on the eggs of corn rootworms Diabrotica spp. (Risch, 1980). Perfecto (1989) has shown through a series of field experiments that ants, principally Solenopsis geminata, Ectatomma ruidum and Pheidole radowszkoskii, can reduce Spodoptera jrugiperda and Dalbulus maidis in traditional rain-fed corn milpa systems in Nicaragua. She found a similar, though somewhat weaker, result in nearby commercial irrigated corn fields where ant activity was lower, presumably due to higher applications of insecticides and greater soil disturbance from mechanical tillage.