Demographic and genetic models in conservation biology: Applications and perspectives for tropical rain forest tree species

Annual Review of Ecology and Systematics

Volumn 27, Issue , 1996, Pages 387-421

  Alvarez Buylla, E R ^a   Garcia Barrios R ^a   Lara Moreno, C ^a   Martinez Ramos M ^a  

^a Centro de Ecologia   (Mexico)

Author keywords

conservation; effective population size; inbreeding; population models; tropical rain forest trees

Indexed keywords

DEMOGRAPHIC MODEL; FOREST FRAGMENTATION; POPULATION VIABILITY; RAINFOREST TREE; TROPICAL TREE;

EID: 0030302585     PISSN: 00664162     EISSN: None     Source Type: Journal    
DOI: 10.1146/annurev.ecolsys.27.1.387     Document Type: Article

References (181)

1. Allendorf FW. 1983. Isolation, gene flow, and genetic differentiation among populations. See Ref. 141a, pp. 51-65
2. Alvarez-Buylla ER. 1986. Demografía v dinámica poblacional de Cecropia obtusifolia (Moraceae) en la selva de los Tuxtlas, México. MSc thesis. UNAM, Mexico
3. Alvarez-Buylla ER. 1994. Density dependence and patch dynamics in tropical rain forests: matrix models and applications to a tree species. Am. Nat. 143:155-91
4. Alvarez-Buylla ER, Chaos A, Piñero D, Garay AA. 1996. Evolutionary consequences of patch dynamics, seed dispersal, and seed banks: demographic genetics of Cecropia obtusifolia, a pioneer tropical tree species. Evolution. 50:1155-66
5. Alvarez-Buylla ER, Garay AA. 1994. Population genetic structure of Cecropia obtusifolia a tropical pioneer tree species. Evolution 48:437-53
6. Alvarez-Buylla ER, García-Barrios R. 1991. Seed and forest dynamics: a theoretical framework and an example from the neotropics. Am. Nat. 137:133-54
7. Alvarez-Buylla ER, García-Barrios R. 1993. Models of patch dynamics in tropical forests. Trends Ecol. Evol. 8(6):201-4
8. Alvarez-Buylla ER, Martinez-Ramos M. 1990. Seed bank versus seed rain in the regeneration of a tropical pioneer tree. Oecologia 84:314-25
9. Alvarez-Buylla ER, Martínez-Ramos M. 1992. Demography and allometry of Cecropia obtusifolia, a neotropical pioneer tree - evaluation of the climax-pioneer paradigm for tropical rain forests. J. Ecol. 80:275-90
10. Alvarez-Buylla ER, Slatkin M. 1991. Finding confidence limits on population growth rates. Trends Ecol. Evol. 6:221-24
11. Alvarez-Buylla ER, Slatkin M. 1993. Finding confidence limits on population growth rates: montecarlo test of a simple analytic method. Oikos 68:273-82
12. Alvarez-Buylla ER, Slatkin M. 1994. Finding confidence limits on population growth rates: three real examples revised. Ecology 72:852-63
13. Ashton PS. 1984. Biosystematics of tropical forest plants: a problem of rare species. In Plant Biosystematics, ed. WF Grant, pp. 495-518. New York: Academic
14. Augspurger CK, Kelly CK. 1984. Pathogen mortality of tropical tree seedlings: experimental studies of effects of dispersal distance, seedling density and light conditions. Oecologia 61:211-17
15. Barrett SCH, Kohn JR. 1991. Genetic and evolutionary consequences of small population size in plants: implications for conservation. See Ref. 51a, pp. 3-30
16. Bawa KS. 1974. Breeding systems of three species of a lowland tropical community. Evolution 28:85-92
17. Bawa KS. 1979. Breeding systems of trees in a tropical wet forest. NZ. J. Bot. 17:521-24
18. Bawa KS, Ashton PS. 1991. Conservation of rare trees in tropical rain forests: a genetic perspective. See Ref. 51a, pp. 62-71
19. Bawa KS, Hadley M, eds. 1990. Reproductive Ecology of Tropical Forest Plants. Paris: UNESCO
20. Bawa KS, Krugman SL. 1991. Reproductive biology and genetics of tropical trees in relation to conservation and management. In Rain Forest Regeneration and Management, ed. A Gómez-Pompa, TC Whitmore, M Hadley, pp. 119-36. Paris: UNESCO
21. Bawa KS, Opler PA. 1975. Dioecism in tropical forest trees. Evolution 29:167-79
22. Bawmol WJ, Oates WE. 1988. The Theory of Environmental Policy. New York: Cambridge Univ. Press. 2nd ed.
23. Begon M, Harper JL, Townsend CR. 1986. Ecology: Individuals, Populations and Communities. Oxford: Blackwell Sci.
24. Bierzychudek P. 1982. The demography of jack-in-the-pulpit, a forest perennial that changes sex. Ecol. Monogr. 52:335-51
25. Boshier DH, Chase MR, Bawa KS. 1995. Population genetics of Cordia alliodora (Boraginaceae), a neotropical tree. 2. Mating system. Am. J. Bot. 82:476-83
26. Boyce MS. 1992. Population viability analysis. Annu. Rev. Ecol. Syst. 23:481-506
27. Brokaw NVL. 1985. Treefalls, regrowth and community structure in tropical forests. In Natural Disturbance: The Patch Dynamic Perspective, ed. STA Pickett, PS White, pp. 53-59. New York: Academic
28. Brokaw NVL. 1987. Gap phase regeneration of three pioneer tree species in a tropical forest. J. Ecol. 75:9-19
29. Brown AHD. 1990. Genetic characterization of plant mating systems. In Plant Population Genetics, Breeding, and Genetic Resources, ed. AHD Brown, MT Clegg, AL Kahler, BS Weir, pp. 145-63. Sunderland: Sinauer
30. Bullock SH. 1980. Demography of an under-growth palm in littoral Cameroon. Biotropica 12:247-55
31. Caswell H. 1989. Matrix Population Models. Sunderland, MA: Sinauer. 328 pp.
32. Chambers SM. 1995. Spatial structure, genetic variation, and the neighborhood adjustment to effective population size. Conserv. Biol. 9:1312-15
33. Charlesworth D. 1991. The apparent selection on neutral marker loci in partially inbreeding populations. Genet. Res. 57:159-75
34. Charlesworth D, Charlesworth B. 1987. Inbreeding depression and its evolutionary consequences. Annu. Rev. Ecol. Syst. 18:237-68
35. Chazdon R. 1988. Sunflecks and their importance to forest understory plants. Adv. Ecol Res. 18:1-63
36. ChesserRK. 1983. Isolation by distance: relationship to the management of genetic resources. See Ref. 141a, pp. 66-77
37. Clark DA, Clark DB. 1984. Spacing dynamics of a tropical rain forest tree: evaluation of the Janzen-Connell model. Am. Nat. 142:769-88
38. Clark DB, Clark DA. 1991. The impact of physical damage on the seedling mortality of a neotropical rain forest. Oikos 55:225-30
39. Condit R, Hubbell SP, Foster RB. 1992. Recruitment near conspecific adults and the maintenance of tree and shrub diversity in a neotropical forest. Am. Nat. 140:261-86
40. Crawford TJ. 1984. What is a population? In Evolutionary Ecology. ed. B Shorrocks, pp. 135-74. Oxford: Blackwell Sci.
41. De Kroon H, Plaiser A, van Groenendael J, Caswell H. 1986. Elasticity: the relative contribution of demographic parameters to population growth rate. Ecology 67:1427-31
42. Denslow JS. 1987. Tropical rainforest gaps and tree species diversity. Annu. Rev. Ecol. Syst. 18:431-51
43. Devlin B, Ellstrand NC. 1988. Fractional paternity assignment: theoretical development and comparison to other methods. Theor. Appl. Gen. 76:369-80
44. Dirzo R, Domínguez C. 1986. Seed shadows, seed predation, and the advantages of dispersal. See Ref. 51, pp. 237-50
45. Durán R. 1992. Variabilidad intraespecífica y dinámica poblacional de Pseudophoenix sargentii. PhD thesis. UNAM, México
46. Eguiarte LE. 1990. Genética de poblaciones de Astrocaryum mexicanum Liebm. en Los Tuxtlas, Veracruz. PhD thesis. UNAM, México
47. Eguiarte LE, Búrquez A, Rodríguez J, Martínez-Ramos M, Sarukhán J, et al. 1993. Direct and indirect estimates of neighborhood and effective population size in a tropical palm Astrocaryum mexicanum. Evolution 47:75-87
48. Eguiarte LE, Pérez-Nasser N, Piñero D. 1992. Genetic structure, outcrossing rate, and heterosis in Astrocaryum mexicanum (tropical palm): implications for evolution and conservation. Heredity 69:217-28
49. Ellstrand NC, Elam DR. 1993. Population genetic consequences of small population size: implications for plant conservation. Annu. Rev. Ecol. Syst. 24:217-42
50. Enrigt N, Ogden J. 1979. Applications of transition matrix models in forest dynamics: Araucaria in Papua New Guinea and Notophagus in New Zealand. Aust. J. Ecol. 4:3-23
51. Enriquez A. 1991. Variación especial en los patrones demográficos de una palma tropical. BSc thesis. UNAM, México
52. Epperson BK. 1995. Fine-scale spatial structure: correlations for individual genotypes differ from those for local gene frequencies. Evolution 45:1022-26
53. Estrada A, Fleming TH, eds. 1986. Frugivores and Seed Dispersal. Dordrecht: Dr W Junk
54. Falk DA, Holsinger KE, eds. 1991 Genetics and Conservation of Rare Plants. New York: Oxford Univ. Press. 283 pp.
55. Fiedler PL, Jain SK. 1992. Conservation Biology: The Theory and Practice of Nature Conservation and Management. New York/London: Chapman & Hall
56. Franco M, Silvertown J. 1994. On tradeoffs, elasticities and the comparative method: a reply to Shea, Rees & Wood. J. Ecol. 82:958
57. Frankham R. 1995. Conservation genetics. Annu. Rev. Genet. 29:305-27
58. García-Barrios R. 1994. Biodiversity and market failure in Mexico. Late Drummers September Issue
59. Gilberts GS, Hubell SP, Foster RB. 1994. Density and distance-to-adult effects of a canker disease of trees in a moist tropical forest. Oecologia 98:100-10
60. Goodman D. 1987. Consideration of stochastic demography in the design and management of biological reserves. Nat. Res. Model. 1:205-34
61. Griffin AR. 1990. Effects of inbreeding on growth of forest trees and implications for management of seed supplies for plantation programmes. See Ref. 17a, pp. 355-74
62. Hamrick JL. 1994. Distribution of genetic diversity in tropical tree populations: implications for the conservation of genetic resources. In Resolving Tropical Forest Resource Concerns Through Tree Improvement, Gene Conservation and Domestication of New Species, ed. CC Lambeth, W Dvorak, pp. 74-82. Raleigh: NC State Univ. Press
63. Hamrick JL. 1994. Genetic diversity and conservation in tropical forests. Proc. Int. Symp. Genetic Conservation Production of Tropical Forest Tree Seed, ed. M Drysdale, SET John, AC Yapa, pp. 1-9. Asean-Canada Forest Tree Seed Center
64. Hamrick JL, Loveless MD. 1989. The genetic structure of tropical tree populations: associations with reproductive biology. In Evolutionary Ecology of Plants, ed. J Bock, YB Linhart, pp. 129-46. Boulder: Westview
65. Hamrick JL, Murawski DA. 1990. The breeding structure of tropical tree forest populations. Plant Species Biol. 5:157-65
66. Hamrick JL, Murawski DA. 1991. Levels of allozyme diversity in populations of uncommon neotropical tree species. J. Trop. Ecol. 7:395-99
67. Hamrick JL, Murawski DA, Nason JD. 1993. The influence of seed dispersal mechanisms on the genetic structure of tropical tree populations. Vegetatio 107/108:281-97
68. Hanski I. 1994. Patch-occupancy dynamics in fragmented landscapes. Trends Ecol. Evol. 9:131-35
69. Hanski I, Gilpin M. 1991. Metapopulation dynamics: brief history and conceptual domain. Biol. J. Linn. Soc. 42:3-16
70. Harris SA. 1995. Systematics and randomly amplified polymorphic DNA in the genus Laucaena. Plant Syst. Evol. 197:195-208
71. Hartshorn G. 1972. The ecological life history and population dynamics of Pentaclethra macroloba, a tropical wet forest dominant and Stryphnodendron excelsum, an occasional associate. PhD thesis. George Washington Univ., Washington DC
72. Hartshorn G. 1975. A matrix model of tree population dynamics. In Tropical Ecological Systems, Trends in Terrestrial and Aquatic Research, ed. FB Golley, E Medina, pp. 41-51. Berlin: Springer-Verlag
73. Hastings A, Harrison S. 1994, Metapopulation dynamics and genetics. Annu. Rev, Ecol. Syst. 25:167-88
74. Hedrick PW, Miller PS. 1992. Conservation genetics: techniques and fundamentals. Ecol. Appl. 2:30-46
75. Houle D. 1994. Adaptative distance and the genetic basis of heterosis. Evolution 48:1410-17
76. Horvitz CC, Schemske DW. 1986. Seed dispersal and environmental heterogeneity in a neotropical herb: a model of population and patch dynamics. See Ref. 51, pp. 169-86
77. Deleted in proof
78. Hubbell SP, Condit R, Foster RB. 1990. Presence and absence of density dependence in a neotropical tree community. Philos. Trans. R. Soc. London Ser. B 330:269-82
79. Hubbell SP, Foster RB. 1983. Diversity of canopy trees in a neotropical forest and implications for conservation. In Tropical Rain Forest Ecology and Management, ed. TC Whitmore, AC Chadwick, pp. 25-41. Oxford: Blackwell Sci.
80. Hubbell SP, Foster RB. 1986. Canopy gaps and the dynamics of a neotropical forest In Plant Ecology, ed. M Crawley, pp. 77-95. Oxford: Blackwell Sci.
81. Hubbell SP, Foster RB. 1986. Biology, chance and history and structure of tropical rain forest tree communities. In Community Ecology, ed. J Diamond, TJ Case, pp. 314-29. New York: Harper & Row
82. Hubbell SP, Foster RB. 1986. Commonness and rarity in a neotropical forest: implications for tropical tree conservations. See Ref. 157, pp. 205-23
83. Hubbell SP, Foster RB. 1987. The spatial context of regeneration in a neotropical forest. In Colonization, Succession and Stability, ed. PJ Edwards, pp. 395-412. Oxford: Blackwell Sci.
84. Hubbell SP, Foster RB. 1990. The fate of juvenile trees in a neotropical forest: implications for the natural maintenance of tropical tree diversity. See Ref. 17a, pp. 522-41
85. Hubbell SP, Foster RB. 1992. Short-term dynamics of a neotropical forest: Why ecological research matters to tropical conservation and management. Oikos 63:48-61
86. Husband BC, Barrett SCH. 1996. A metapopulation perspective in plant population biology. J. Ecol. In press
87. Jarne P, Charlesworth D. 1993. The evolution of the selfing rate in functionally hermaphrodite plants and animals. Annu. Rev. Ecol. Syst. 24:441-66
88. Kageyama PY. 1990. Genetic structure of tropical tree species of Brazil. See Ref. 17a, pp. 375-87
89. Kimura M, Crow JF. 1963. The measurement of effective population number. Evolution 17:279-88
90. Lacy RC. 1987. Loss of genetic diversity from managed populations: interacting effects of drift, mutation, immigration, selection and population subdivision. Conserv. Biol. 1:143-58
91. Lande R. 1988. Genetics and demography in biological conservation. Science 241:1455-60
92. Lande R. 1993. Risks of population extinction from demographic and environmental stochasticity and random catastrophes. Am. Nat. 142:911-27
93. Lande R. 1994. Risk of population extinction from fixation of new deleterious mutations. Evolution 48:1460-69
94. Lande R, 1995. Mutation and conservation. Conserv. Biol. 9:782-91
95. Lande R, Barrowclough GF. 1987. Effective population size, genetic variation, and their use in population management. See Ref. 158, pp. 87-123
96. Lande R, Orzack SH. 1988. Extinction dynamics of age-structured populations in a fluctuating environment. Proc. Natl. Acad. Sci. USA 85:7418-21
97. Lande R, Schemske DW. 1985. The evolution of self fertilization and inbreeding depression in plants. I. Genetic models. Evolution 39:24-40
98. Lefkovitch LP. 1967. A theoretical evaluation of population growth after removing individuals from some age groups. Bull Entomol. Res. 57:437-45
99. Levins R. 1970. Extinction. In Some Mathematical Questions in Biology. Lecture Notes on Mathematics in the Life Sciences, ed. M Gerstenhaber, pp. 75-107. Providence, RI: Am. Math. Soc.
100. Loiselle BA, Sork VL, Nason JD, Graham C. 1996. Spatial genetic structure of a tropical understory shrub, Psychotria officinalis (Rubiaceae). Am. J. Bot. In press
101. Loveless MD. 1992. Isozyme variation in tropical trees: patterns of genetic organization. New For. 6:67-94
102. Lynch M, Conery J, Burger R. 1995. Mutational meltdowns in sexual populations. Evolution 49:1067-80
103. LynchM, Conery J, Bürger R. 1995. Mutation accumulation and the extinction of small populations. Am. Nat. 146:489-518
104. Lynch M, Gabriel W. 1990. Mutation load and the survival of small populations. Evolution 44:1725-37
105. MaceGM,LandeR. 1991. Assessing extinction threats: toward a reevaluation of IUCN threatened species categories. Conserv. Biol. 5:148-57
106. Martinez-Ramos M. 1985, Claros, ciclos vitales de los árboles tropicales y regeneración natural de las selvas altas perennifolias. In Investiaciones sobre la regeneracíon natural de las selvas altas perennifolias, ed. A Gómez-Pompa, S del Amo, pp. 191-240. México: Alhambra
107. Martínez-Rarnos M, Alvarez-Buylla ER. 1986. Gap dynamics, seed dispersal and tree recruitment at Los Tuxtlas, México. See Ref. 51, pp. 323-46
108. Martínez-Ramos M, Alvarez-Buylla ER. 1995. Ecología de Poblaciones de Plantas en una Selva Húmeda de México. Bol. Soc. Bot. Méx. 56:121-53
109. Martinez-Ramos M, Alvarez-Buylla ER, Sarukhán J. 1989. Tree demography and gap dynamics in a tropical rain forest. Ecology 70:555-58
110. Martínez-Ramos M, Alvarez-Buylla ER, Sarukhán J, Piñero D. 1988. Treefall age determination and gap dynamics in a tropical forest. J. Ecol. 76:700-16
111. Martínez-Ramos M, Samper C. 1996. Tree life history patterns and forest dynamics: a conceptual model for the study of plant demography in patchy environments. J. Sustainable Forestry.
112. Martínez-Ramos M, Sarukhán J, Piñero D. 1988. The demography of tropical trees in the context of gap dynamics: the case of Astrocaryum mexicanum at Los Tuxtlas tropical rain forest. In Plant Population Ecology, ed. AJ Davy, MJ Hatchings, AR Watkinson, pp. 293-313. Oxford: Blackwell Sci.
113. May RM. 1976. Simple mathematical models with very complicated dynamics. Nature 261:459-67
114. Mendoza AE. 1994. Demografia e integración clonal en Reinhardtia gracilis, una palma tropical. PhD thesis. UNAM, Mexico
115. Menges ES. 1991. The application of minimum viable population theory to plants. See Ref. 51a, pp. 45-61
116. Menges E. 1992. Stochastic modeling of extinction in plant populations. In Conservation Biology: the Theory and Practice of Nature Conservation and Management, ed. PL Fiedler, SK Jain, pp. 253-76. New York: Chapman & Hall
117. Metz JAJ, Diekmann O. 1986. The Dynamics of Physiologically Structured Populations, New York: Springer-Verlag
118. Milligan BG, Leebens-Mack J, Strand E. 1994. Conservation genetics: beyond the maintenance of marker diversity. Mol. Ecol 3:423-35
119. Mitton JB, Grant MC. 1984. Associations among protein heterozygosity, growth rate, and developmental homeostasis. Annu. Rev. Ecol. Syst. 15:479-99
120. Moffett AA, Nixon KM. 1974. The effects of self-fertilization on green wattle (Acacia decurrens) and black wattle (Acacia mearnsii). Wattle Res. Inst. Rep. 1973-1974:66-84
121. Moran GF, Muona O, Bell JC. 1989. Breeding systems and genetic diversity in Acacia auriculiformis and Acacia crassicarpa. Biotropica 21:250-56
122. Moran GF, Muona O, Bell JC. 1989. Acacia mangium: a tropical forest tree of the coastal lowlands with low genetic diversity. Evolution 43:231-35
123. Murawski DA, Gunatilleke IAUN, Bawa KS. 1994. The effects of selective logging on inbreeding in Shorea megistophylla (Dipterocarpaceae) from Sri Lanka. Conserv. Biol. 8:997-1002
124. Deleted in proof
125. Murawski DA, Hamrick JL. 1991. The effect of the density of flowering individuals on the mating systems of nine tropical tree species. Heredity 67:167-74
126. Myers N. 1980. Conversion of Tropical Moist Forest. Washington, DC: Natl. Acad. Sci.
127. Myers N, 1988. Tropical forests and their species. Going, going ... ? In Biodiversity, ed. EO Wilson, FM Peter, pp 28-35. Washington, DC: Nail. Acad. Sci.
128. Myers N. 1989. Deforestation Rates in Tropical Countries and Their Climatic Implications. London: Friends of the Earth
129. Myers N. 1990. The biological challenge: extended hot-spots analysis. Environmentalist 10:243-56
130. Deleted in proof
131. Nason JD, Aldrich PR, Hamrick JL. 1996. Dispersal and the dynamics of genetic structure in fragmented tropical tree populations. In Tropical Forest Remnants, ed. WF Laurance. In press
132. Nunney L, Campbell KA. 1993. Assessing minimum viable population size: demography meets population genetics. Trends Ecol. Evol. 8:234-43
133. Olmsted I, Alvarez-Buylla E. 1995. Sustainable harvesting of tropical trees: demography and matrix models of two palm species in Mexico. Ecol. Appl. 5:484-500
134. O'Malley DM, Bawa KS. 1987. Mating system of a tropical rain forest tree species. Am. J. Bot. 74:1143-49
135. O'Malley DM, Buckley DP, Prance GT, Bawa KS. 1988. Genetics of Brazil nut (Bertholletia excelsa: Lecythidaccae). 2. Mating system. Theor Appl. Genet. 76:929-32
136. Oyama K. 1987. Demografía y Dinámica poblacional en Chamaedorea tepejilote de Liebm. (Palmae) en la selva de los Tuxtlas, Ver, (México). MSc thesis. UNAM, Mexico
137. Oyama K. 1993. Conservation biology of tropical trees: demographic and genetic considerations. Environ. Update 1:17-32
138. Palomeque R. 1996. Demografia y herbivoría en Omphalea oleifera (Euphorbiaceae). BSc thesis. UNAM, Mexico
139. Peters CM. 1991. Plant demography and the management of tropical forest resources: a case study from Brosimum alicastrum in Mexico. In Rain Forest Regeneration and Management, ed. A Gómez-Pompa, TC Whitmore, M Hadley, pp. 91-118. Paris: UNESCO
140. Peters CM, Gentry A, Mendelsohn R. 1989. Valuation of an Amazonian rainforest. Nature 339:655-56
141. Pinard M. 1993. Impacts of stem harvesting on populations of Iriartea deltoide (Palmae) in an extractive reserve in Acre, Brazil. Biotropica 25:2-14
142. Piñero D, Martínez-Ramos M, Sarukhán J. 1984. A population model of Astrocaryum mexicanum and a sensitivity analysis of its rate of increase. J. Ecol. 72:977-91
143. Ritland K, Jain SK. 1981. A model for the estimation of outcrossing rate and gene frequencies based on independent loci. Heredity 47:37-54
144. Robles H, García-Barrios R. 1994. Fallas estructurales del mercado de maiz y la logica de la produccioń campesina. Econ. Mexicana (Nueva Epoca) 3:225-85
145. Rodríguez-Vlázquez J. 1994. Efecto del mosaico de regeneracion y la densidad sobre la remoción post-dispersion de las diasporas de una palma tropical. BSc thesis. UNAM, Mexico
146. Samper C. 1992. Natural disturbance and plant establishment in an Andean cloud forest. PhD thesis. Harvard Univ., MA
147. Schemske DW, Lande R. 1985. The evolution of self-fertilization and inbreeding depression in plants. II. Empirical observations. Evolution 39:41-52
148. 141a, Schonewald-Cox CM, Chambers SM, MacBryde B, Thomas L, eds. 1983. Genetics and Conservation: a Reference for Managing Wild Animal and Plant Populations. Menlo Park, CA: Benjamin/Cummings. 722 pp.
149. Schupp EW. 1988, Seed and early seedling predation in the forest understory and in treefall gaps. Oikos 51:525-30
150. Schupp EW. 1988. Factors affecting post-disersal seed survival in a tropical forest. Oecologia 76:525-30
151. Schupp EW, Frost EJ. 1989. Differential predation of Welfia georgii seeds in treefall gaps and in the forest understory. Biotropica 21:200-3
152. Shea K, Rees M, Wood SN. 1994. Tradeoffs, elasticities and the comparative method. J. Ecol. 82:951-57
153. Silvertown J. 1987. Introduction to Plant Population Ecology. Harlow: Longman
154. Silvertown J, Franco M, Menges E. 1996. Interpretation of elasticity matrices as an aid to the management of plant populations for conservation. Conserv. Biol. In press
155. Silvertown J, Franco M, Pisanty I, Mendoza A. 1993. Comparative plant demography - relative importance of life-cycle components to the finite rate of increase in woody and herbaceous perennials. J. Ecol. 81:465-76
156. Simberloff D. 1986. Are we on the verge of mass extinction in tropical rain forests? In Dynamics of Extinction, pp. 165-80. New York: Wiley
157. Simberloff D. 1988. The contribution of population and community biology to conservation science. Annu. Rev. Ecol. Syst. 19:473-511
158. Slatkin M. 1985. Gene flow in natural populations. Annu. Rev. Ecol. Syst. 16:393-430
159. Slatkin M. 1991. Inbreeding coefficients and coalescence times. Genet. Res. 58:167-75
160. Slatkin M, Barton NH. 1989. A comparison of three indirect methods for estimating average levels of gene flow. Evolution 43:1349-68
161. Slatkin M, Maddison WP. 1989. A cladistic measure of gene flow inferred from the phylogenies of alleles. Genetics 123:603-13
162. Slatkin M, Maddison WP. 1990. Detecting isolation by distance using phytogenies of genes. Genetics 126:249-60
163. Smouse P. 1986. The fitness consequences of multiple-locus heterozygosity under the multiplicative overdominance and inbreeding depression models. Evolution 40:946-57
164. Solbrig O, Sarandon R, Bossert W. 1988. A density-dependent growth model of a perennial herb: Viola frimbriatula. Am. Nat. 131:385-400
165. Soulé ME, ed. 1986. Conservation Biology: the Science of Scarcity and Diversity. Sunderland, MA: Sinauer. 584 pp.
166. Soulé ME, ed. 1987. Viable Populations for Conservation. Cambridge: Cambridge Univ. Press. 189 pp.
167. Soulé ME, Wilcox BA, eds. 1980. Conservation Biology: An Evolutionary-Ecological Perspective. Sunderland, MA: Sinauer
168. Taylor BL. 1995. The reliability of using population viability analysis for risks classification of species. Conserv. Biol. 9:551-58
169. Taylor P, Garcia-Barrios R. 1996. The social analysis of ecological change. Soc. Sci. Info. In press
170. Terauchi R. 1994. DNA analysis of Dryobalanops lanceolata (Diptero-carpaceae). In Plant Reproductive Systems and Animal Seasonal Dynamics: Long Term Study of Dipterocarp Forest in Sarawak, ed. T Inoue, AA Hamid, pp. 114-17. Kyoto: Kyoto Univ.
171. Tuljapurkar SD. 1990. Population Dynamics in Variable Environments. New York: Springer-Verlag
172. Uhl CK, Dezzeo CN, Maquino P. 1988. Vegetation dynamics in Amazonian treefall gaps. Ecology 69:751-63
173. Uhl CK, Guimaráes Vieira IC. 1989. Ecological impacts of selective logging in the Brazilian Amazon: a case study from the Paragontinas region of the state of Para. Biotropica 21:98-106
174. United Nations Environmental Program. 1995. Global Biodiversity. Cambridge: Cambridge Univ. Press
175. Usher MB. 1976. Extensions to models, used in renewable resource management, which incorporate an arbitrary structure. J. Environ. Manage. 4:123-40
176. Whitmore TC. 1982. Tropical Rain Forests of the Far East. Oxford: Clarendon. 2nd ed.
177. Whitmore TC, Sayer JA. 1992. Tropical Deforestation and Species Extinction. London/New York: Chapman & Hall. 153 pp.
178. Wilson EO. 1988. Biodiversity. Washington, DC: Natl. Acad. Sci.
179. Wilson MH, Kepler CB, Snyder NFR, Derrickson SR, et al. 1994. Puerto Rican parrots and potential limitations of the metapopulation approach to species conservation. Conserv. Biol. 8:114-23
180. Wright S. 1931. Evolution in Mendelian populations. Genetics 16:97-159
181. Wright S. 1969. Evolution and Genetics of Populations: The Theory of Gene Frequencies. Chicago: Univ. Chicago Press