Abstract
The present focus of practical conservation efforts is limited in scope. This narrowness results in an inability to evaluate and manage phenomena that operate at large spatiotemporal scales. Whereas real ecological phenomena function in a space-time mosaic across a full hierarchy of biological entities and processes, current conservation strategies address a limited spectrum of this complexity. Conservation typically is static (time-limited), concentrates on the habitat content rather than the landscape context of protected areas, evaluates relatively homogeneous communities instead of heterogeneous landscapes, and directs attention to particular species populations and/or the aggregate statistic of species diversity. Insufficient attention has been given to broad ecological patterns and processes and to the conservation of species in natural relative abundance patterns (native diversity).
The authors present a conceptual scheme that evaluates not only habitat content within protected areas, but also the landscape context in which each preserve exists. Nodes of concentrated ecological value exist in each landscape at all levels in the biological hierarchy. Integration of these high-quality nodes into a functional network is possible through the establishment of a system of interconnected multiple-use modules (MUMs). The MUM network protects and buffers important ecological entities and phenomena, while encouraging movement of individuals, species, nutrients, energy, and even habitat patches across space and time. An example is presented for the southeastern USA (south Georgia-north Florida), that uses riparian and coastal corridors to interconnect existing protected areas. This scheme will facilitate reintroduction and preservation of wide-ranging species such as the Florida panther, and help reconcile species-level and ecosystem-level conservation approaches.
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Literature cited
Allen, T. F. H., and Starr, T. B. 1982. Hierarchy: perspectives for ecological complexity. University of Chicago Press, Chicago, 310 pp.
Big Cypress Area Management Task Force. 1984. Sensitive natural resources of the Big Cypress Area of Critical State Concern. Unpublished report to Florida governor and members of the cabinet.
Bonnicksen, T. M., and E. C. Stone. 1982. Reconstruction of a presettlement giant sequoia—mixed conifer forest community using the aggregation approach.Ecology 63:1134–1148.
Bormann, F. H., and G. E. Likens. 1979. Pattern and process in a forested ecosystem. Springer-Verlag, New York, 253 pp.
Bray, J. R. 1956. Gap phase replacement in a maple-basswood forest.Ecology 37:598–600.
Clements, F. E. 1936. Nature and structure of the climax.Journal of Ecology 24:252–284.
Cooper, W. S. 1913. The climax forest of Isle Royale, Lake Superior, and its development.Botanical Gazette 55:1–44, 115–140, and 189–235.
Crawford, H. S., R. G. Hooper, and R. W. Titterington. 1981. Songbird population response to silvicultural practices in central Appalachian hardwoods.Journal of Wildlife Management 45:680–692.
Dayton, P. K. 1971. Competition, disturbance and community organization: the provision and subsequent utilization of space in a rocky intertidal community.Ecological Monographs 41:351–389.
Diamond, J. M. 1975. The island dilemma: lessons of modern biogeographic studies for the design of natural preserves.Biological Conservation 7:129–146.
Diamond, J. M. 1976. Island biogeography and conservation: strategy and limitations.Science 193:1027–1029.
Diamond, J. M. 1981. Current issues in conservation.Nature 289:350–351.
Fell, G. B. 1983. The natural area movement in the United States, its past and its future.Natural Areas Journal 3(4):47–55.
Fitch, J. H. 1980. The need for comprehensive wildlife programs in the United States: a summary. Council Environmental Quality, Washington, DC, 23 pp.
Forman, R. T. T. 1983. Corridors in a landscape: their ecological structure and function.Ekologiya (CSSR) 2:375–387.
Forman, R. T. T., and J. Baudry. 1984. Hedgerows and hedgerow networks in landscape ecology.Environmental Management 8:495–510.
Forman, R. T. T., and M. Godron. 1981. Patches and structural components for a landscape ecology.BioScience 31:733–740.
Foster, R. B. 1980. Heterogeneity and disturbance in tropical vegetation. Pages 75–92in M. E. Soule and B. A. Wilcox (eds.), Conservation biology: an ecological-evolutionary perspective. Sinauer Associates, Sunderland, Massachusetts.
Garland, T., and W. G. Bradley. 1984. Effects of a highway on Mojave Desert rodent populations.American Midland Naturalist 111:47–56.
Garwood, N. C., D. P. Janos, and N. Brokow. 1979. Earthquake-caused landslides: a major disturbance to tropical Forests.Science 205:997–999.
Graul, W. D., and G. C. Miller. 1984. Strengthening ecosystem management approaches.Wildlife Society Bulletin 12:282–289.
Hairston, N. G. 1959. Species abundance and community organization.Ecology 40:404–416.
Hansson, L. 1977. Landscape ecology and stability of populations.Landscape Planning 4:85–93.
Harris, L. D. 1984a. The fragmented forest. University of Chicago Press, Chicago, 211 pp.
Harris, L. D. 1984b. Bottomland hardwoods: valuable, vanishing, vulnerable. University of Florida Cooperative Extension Service, University of Florida Special Publication 28, 20 pp.
Harris, L. D., and R. F. Noss. 1985. Problems in categorizing the status of species: endangerment with best of intentions.In 16th IUCN technical meeting, Madrid, Spain, November 1984 (in press).
Henderson, M. T., G. Merriam, and J. Wegner. 1985. Patchy environments and species survival: chipmunks in an agricultural mosaic.Biological Conservation 31:95–105.
Jenkins, R. E. 1978. Heritage classification: the elements of ecological diversity.Nature Conservancy News 38(1):24–25 and 30.
Koestler, A. 1967. The ghost in the machine. Macmillan, New York, 384 pp.
Kushlan, J. A. 1979. Design and management of continental wildlife reserves: lessons from the Everglades.Biological Conservation 15:281–290.
Levin, S. A., and R. T. Paine. 1974. Disturbance, patch formation and community structure.Proceedings of the National Academy of Sciences, USA 71:2744–2747.
Lovejoy, T. E., and D. C. Oren. 1981. The minimum critical size of ecosystems. Pages 7–12in R. L. Burgess and D. M. Sharpe (eds.) Forest island dynamics in man-dominated landscapes. Springer-Verlag, New York.
Man and the Biosphere (MAB) Task Force. 1974. Criteria and guidelines for the choice and establishment of biosphere reserves. MAB Report Series 22. Unesco, Paris, 61 pp.
Mader, H.-J. 1984. Animal habitat isolation by roads and agricultural fields.Biological Conservation 29:81–96.
Margules, C., and M. B. Usher. 1981. Criteria used in assessing wildlife conservation potential: a review.Biological Conservation 24:115–128.
McDermott, J. 1983. Geometric forms known as fractals find sense in chaos.Smithsonian 14(9): 110–117.
McNaughton, S.J. 1984. Grazing lawns: animals in herds, plant form, and coevolution.American Naturalist 124:863–886.
Minshall, G. W., R. C. Peterson, and C. F. Nimz. 1985. Species richness in streams of different size from the same drainage basin.American Naturalist 125:16–38.
Naveh, Z., and A. S. Lieberman. 1984. Landscape ecology: theory and application. Springer-Verlag, New York, 356 pp.
Noss, R. F. 1983. A regional landscape approach to maintain diversity.BioScience 33:700–706.
Noss, R. F. 1985a. On characterizing presettlement vegetation: how and why.Natural Areas Journal 5(1):5–19.
Noss, R. F. 1985b. Landscape considerations in reintroducing and maintaining the Florida Panther: design of appropriate preserve networks. Unpublished report submitted to the Florida Panther Technical Advisory Council, 32 pp. + figures.
Odum, H. T. 1983. Systems ecology: an introduction. John Wiley and Sons, New York, 644 pp.
Paine, R. T. 1966. Food web complexity and species diversity.American Naturalist 100:65–75.
Paine, R. T., and S.A. Levin. 1981. Intertidal landscapes: disturbance and the dynamics of pattern.Ecological Monographs 51:145–178.
Pickett, S. T. A., and J. N. Thompson. 1978. Patch dynamics and the size of nature reserves.Biological Conservation 13:27–37.
Pielou, E. C. 1975. Ecological diversity. Wiley-Interscience, New York.
Pyle, R. M. 1980. Management of nature reserves. Pages 319–327in M. E. Soule and B. A. Wilcox (eds.), Conservation biology: an ecological-evolutionary perspective. Sinauer Associates, Sunderland, Massachusetts.
Risser, P. G., J. R. Karr, and R. T. T. Forman. 1984. Landscape ecology: directions and approaches. Illinois Natural History Survey Special Publication 2. Champaign, Illinois, 18 pp.
Romme, W. H., and D. H. Knight. 1982. Landscape diversity: the concept applied to Yellowstone Park.BioScience 32:664–670.
Root, R. B. 1973. Organization of a plant—arthropod association in simple and diverse habitats: the fauna of collards (Brassica oleracea).Ecological Monographs 43:95–124.
Schonewald-Cox, C. M., S. M. Chambers, B. MacBryde, and W. L. Thomas. 1983. Genetics and conservation: a reference for managing wild animal and plant populations. Benjamin/Cummings, Menlo Park, California, 722 pp.
Sousa, W. P. 1979. Disturbance in marine intertidal boulder fields: the nonequilibrium maintenance of species diversity.Ecology 60:1225–1239.
Sousa, W. P. 1984. Intertidal mosaics: patch size, propagule availability, and spatially variable patterns of succession.Ecology 65:1918–1935.
Sprugel, D. G. 1976. Dynamic structure of wave-regeneratedAbies balsamea forests in the north-eastern United States.Journal of Ecology 64:889–911.
Sprugel, D. G., and F. H. Bormann. 1981. Natural disturbance and the steady state in high-altitude balsam fir forests.Science 211:390–393.
United States National Park Service. 1978. Management policies. USDI, Washington, DC.
Verner, J. 1984. The guild concept applied to management of bird populations.Environmental Management 8:1–14.
Warren, A. 1983. Conservation and the land. Pages 19–39in A. Warren and F. B. Goldsmith (eds.), Conservation in perspective. John Wiley and Sons, Chichester, UK.
Watt, A. S. 1947. Pattern and process in the plant community.Journal of Ecology 35:12–22.
Webb, N. R., R. T. Clarke, and J. T. Nicholas. 1984. Invertebrate diversity on fragmented Calluna-heartland: Effects of surrounding vegetation.Journal of Biogeography 11:41–46.
White, P. S. 1979. Pattern, process, and natural disturbance in vegetation.Botanical Review 45:229–299.
White, P. S., and S. P. Bratton. 1980. After preservation: philosophical and practical problems of change.Biological Conservation 18:241–255.
Whittaker, R. H., and S. A. Levin. 1977. The role of mosaic phenomena in natural communities.Theoretical Population Biology 12:117–139.
Willis, E. O. 1974. Populations and local extinctions of birds on Barro Colorado Island, Panama.Ecological Monographs 44:153–169.
Wright, H. E. 1974. Landscape development, forest fires, and wilderness management.Science 186:487–495.
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Noss, R.F., Harris, L.D. Nodes, networks, and MUMs: Preserving diversity at all scales. Environmental Management 10, 299–309 (1986). https://doi.org/10.1007/BF01867252
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DOI: https://doi.org/10.1007/BF01867252