tropogon. OTS 90—1 coursebook. Organization for
Tropical Studies, Durham, North Carolina.
Futuyma, D. J., and M. Slatkin, editors. 1983. Coevolution.
Sinauer, Sunderland, Massachusetts.
Garwood, N. 1983. Seed germination in a seasonal tropical
forest in Panama: a community study. Ecological Mono-
graphs 53:159-181.
Gentry, A. H. 1982. Patterns of neotropical plant species
diversity. Evolutionary Biology 15:1-84.
Gibson, J. P. 1995. Evolutionary ecology of reproduction
in Ocotea tenera (Lauraceae), a gynodioecious tropi-
cal tree. Ph.D. dissertation, University of Colorado,
Boulder.
Gibson, J. P., and N. T. Wheelwright. 1995. Genetic struc-
ture in a population of a tropical tree Ocotea tenera
(Lauraceae): influence of avian seed dispersal.
Oecologia 103:49-54.
. 1996. Mating system dynamics of Ocotea tenera
(Lauraceae), a gynodioecious tropical tree. American
Journal of Botany 83:890-894.
Gilbert, L. E. 1980. Food web organization and conservation
of neotropical diversity. Pages 11—34 in M. E. Soule and
B. A. Wilcox, editors. Conservation biology: an evolu-
tionary-ecological perspective. Sinauer, Sunderland,
Massachusetts.
Gilbert, L. E., and P. H. Raven, editors. 1975. Coevolution of
animals and plants. University of Texas Press, Austin.
Gleason, A. H. 1945. On Blakea and Topobea. Bulletin of the
Torrey Botanical Club 72:385-393.
Godschalk, S. K. B. 1983. Mistletoe dispersal by birds in
South Africa. Pages 117-128 in M. Calder and
P. Bernhardt, editors. The biology of mistletoes. Aca-
demic Press, Sydney.
Goldwasser, L. 1987.1. Branching patterns, generating rules,
and astogenetic trajectories in Bugula (Cheilostomata:
Bryozoa); II. Ecological and evolutionary consequences
of mutualism. Ph.D. dissertation, University of Califor-
nia, Berkeley.
Goldwasser, L., G. Schatz, and H. Young. 1993. A new
method for marking Scarabaeidae and other beetles.
Coleopterists Bulletin 47:21-26.
Grimaldi, D. A. 1987. Phylogenetics and taxonomy of
Zygothrica (Diptera: Drosophilidae). The American
Museum of Natural History Bulletin 186:103-268.
Haber, W. A. 1983a. Checklist of Sphingidae. Pages 645-650
in D. Janzen, editor. Costa Rican natural history. Uni-
versity of Chicago Press, Chicago.
. 1983b. Solanum siparunoides. Pages 326-328 in D.
Janzen, editor. Costa Rican natural history. University
of Chicago Press, Chicago.
-. 1993. Seasonal migration of monarchs and other
butterflies in Costa Rica. Los Angeles County Museum
of Natural History, Science Series No. 38:201-207.
Haber, W. A., and G. W. Frankie. 1983. Luehea Candida.
Pages 269-270 in D. Janzen, editor. Costa Rican natural
history. University of Chicago Press, Chicago.
. 1989. A tropical hawkmoth community: Costa Rican
dry forest Sphingidae. Biotropica 21:155-172.
Hall, P., L. C. Orrell, and K. S. Bawa. 1994. Genetic diver-
sity and mating system in a tropical tree, Carapa
guianensis (Meliaceae). American Journal of Botany
81:1104-1111.
Hall, P., S. Walker, and K. S. Bawa. 1996. Effect of forest frag-
mentation on genetic diversity and mating system in a
tropical tree, Pithecellobium elegans. Conservation Bi-
ology 10:757-768.
Hamrick, J. L., and M. D. Loveless. 1989. The genetic struc-
ture of tropical tree populations: associations with re-
productive biology. Pages 129-146 in J. H. Bock and Y.
B. Linhart, editors. The evolutionary ecology of plants.
Westview Press, Boulder, Colorado.
Hamrick, J. L., D. A. Murawski, and J. D. Nason. 1993. The
influence of seed dispersal mechanisms on the genetic
structure of tropical tree populations. Vegetatio 107/
108:281-297.
Harder, L. D., and S. C. H. Barrett. 1996. Pollen dispersal
and mating patterns in animal-pollinated plants. Pages
140-190 in D. G. Lloyd and S. C. H. Barrett, editors.
Floral biology: Studies on floral evolution in animal-
pollinated plants. Chapman and Hall, New York.
Harper, J. L. 1977. Population biology of plants. Academic
Press, London.
Heithaus, E. R., and T. H. Fleming, 1978. Foraging movements
of a frugivorous bat, Carollia perspicillata (Phyllo-
stomatidae). Ecological Monographs 48:127-143.
Herre, E. A. 1987. Optimality, plasticity and selective regime
in fig wasp sex ratios. Nature 329:627-629.. 1989. Coevolution of reproductive characteristics in
12 species of New World figs and their pollinator wasps.
Experientia 45:637-646.
-. 1996. An overview of studies on a community of
Panamanian figs. Journal of Biogeography 23: 593-607.
Herrera, C. M. 1987. Components of pollinator "quality":
comparative analysis of a diverse insect assemblage.
Oikos 50:79-90.
. 1996. Floral traits and plant adaptation to insect
pollinators: a devil's advocate approach. Pages 65-87
in D. G. Lloyd and S. C. H. Barrett, editors. Floral biol-
ogy: studies in floral evolution in animal-pollinated
plants. Chapman and Hall, New York.
Herrera, C. M., P. Jordano, L. Lopez-Soria, and J. A. Amat.
1994. Recruitment of a mast-fruiting, bird-dispersed
tree: bridging frugivore activity and seedling establish-
ment. Ecological Monographs 64:315-344.
Hilty, S. L. 1980. Flowering and fruiting periodicity in a
premontane rain forest in Pacific Colombia. Biotropica
12:292-306.
Hoppes, W. G. 1987. Pre- and post-foraging movements of
frugivorous birds in an eastern deciduous forest wood-
land, USA. Oikos 49:281-290.
Howe, H. F. 1977. Bird activity and seed dispersal of a tropi-
cal wet forest tree. Ecology 58:539-550.
. 1985. Gomphothere fruits: a critique. American Natu-
ralist 125:853-865.
. 1993. Specialized and generalized dispersal systems:
where does "the paradigm" stand? Vegetatio 107/108:3-
13.
Howe, H. F., and D. De Steven. 1979. Fruit production, mi-
grant bird visitation, and seed dispersal of Guarea
glabra in Panama. Oecologia 39:185-196.
Howe, H. F., and G. F. Estabrook. 1977. On intraspecific
competition for dispersal agents in tropical trees. Ameri-
can Naturalist 111:817-832.
Howe, H. F., and R. B. Primack. 1975. Differential seed dis-
persal by birds of the tree Casearia nitida (Fla-
courtiaceae). Biotropica 7:278-283.
Howe, H. F., and W. Richter. 1982. Effect of seed size on
seedling size in a neotropical nutmeg (Virola surina-
mensis}: a within and between crop analysis. Oecologia
53:347-351.
Howe, H. F., and J. Smallwood. 1982. Ecology of seed dis-
persal. Annual Review of Ecology and Systematics
13:201-228.
Howe, H. F., and G. A. Vande Kerckhove. 1979. Fecundity
and seed dispersal by birds of a tropical tree. Ecology
60:180-189.
. 1981. Removal of nutmeg (Virola surinamensis]
crops by birds. Ecology 62:1093-1106.
Howe, H. F., and L. C. Westley. 1988. Ecological relationships
of plants and animals. Oxford University Press, New York.
Howe, H. F., E. W. Schupp, and L. C. Westley. 1985. Early
consequences of seed dispersal for a neotropical tree
(Virola surinamensis). Ecology 66: 781-791.
Inouye, D. W. 1983. The ecology of nectar robbing. Pages
153-173 in B. Bentley and T. Elias, editors. The biol-
ogy of nectaries. Columbia University Press, New York.
298 Plant-Animal Interactions