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Frugivory and seed dispersal : ecological and evolutionary aspects - T.H. Fleming

Frugivory and seed dispersal

ecological and evolutionary aspects

By: T.H. Fleming (Editor), Alejandro Estrada (Editor)

Hardcover Published: 30th June 1993
ISBN: 9780792321415
Number Of Pages: 392

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Any scientific discipline needs a theoretical framework to guide its development and to sharpen the questions its researchers pursue. In biology, evolution is the grand theoretical framework, and an hisĀ­ torical perspective is necessary to understand present-day biological conditions. In its formative years, the modern study of the fruit-frugivore mutualism was guided by the 'specialist-generalist' paradigm developed by D. Snow, D. McKey, and H. Howe. Howe reviews the current status of this evolutionĀ­ ary paradigm and points out that it has been dismissed by many workers before being adequately tested. This is because ecologists working with the tropical plants and frugivorous birds for which the paradigm was originally developed rarely measure the seed dispersal effectiveness of different disperser species. He indicates that this paradigm still has heuristic value and suggests that several additional ecological paradigms, including the concept ofkeystone species ofplants and frugivores and the role that frugivores play in density-dependent mortality in tropical trees, are worth studying. The concept of seed dispersal quality has been central to discussions of fruit-frugivore coevolution. Schupp thoroughly reviews data bearing on this concept, constructs a hierarchical framework for viewing disperser effectiveness, and points out that disperser effectiveness depends on both the quantity and quality of seed dispersal. Effectiveness, in turn, affects both evolutionary and ecological relationships between dispersers and their food plants.

Acknowledgements
General introduction
Historical and theoretical aspects of frugivory and seed dispersal
Specialized and generalized dispersal systems: where does 'the paradigm' stand?p. 3
Quantity, quality and the effectiveness of seed dispersal by animalsp. 15
The population-dynamic functions of seed dispersalp. 31
Consumption of fruits of the Melastomataceae by birds: how diffuse is coevolution?p. 57
Speciation and coevolution: an interpretation of frugivory phenomenap. 75
Geographical ecology and variation of plantseed disperser interactions: southern Spanish Junipers and frugivorous thrushesp. 85
Plant strategies
Opportunism vs. specialization: the evolution of dispersal strategies in fleshy-fruited plantsp. 107
Consequences for seed distributions of intra-crop variation in wing-loading of wind-dispersed speciesp. 121
Evolutionary ecology of mast-seeding in temperate and tropical oaks (Quercus spp.)p. 133
Aspects of variation in a neotropical seed dispersal systemp. 149
Fruit size in a tropical tree species: variation, preference by birds, and heritabilityp. 163
Frugivore strategies
Spatial distribution of understory fruit-eating birds and fruiting plants in a neotropical lowland wet forestp. 177
Weak interactions between avian and insect frugivores: the case of Pistacia terebinthus L. (Anacardiaceae)p. 191
Ecological and behavioral consequences of digestion in frugivorous animalsp. 205
The influence of seed packaging and fruit color on feeding preferences of American robinsp. 217
The influence of pulp lipids on fruit preference by birdsp. 227
Seed dispersal versus seed predation: an inter-site comparison of two related African monkeysp. 237
Patterns of frugivore species richness and abundance in forest islands and in agricultural habitats at Los Tuxtlas, Mexicop. 245
Consequences of seed dispersal
Dispersal mode, seed shadows, and colonization patternsp. 261
The influence of seed dispersal mechanisms on the genetic structure of tropical tree populationsp. 281
Seed rain and advanced regeneration in a tropical rain forestp. 299
Monitoring seed dispersal at isolated standing trees in tropical pastures: consequences for local species availabilityp. 319
The role of seed dispersal in the natural regeneration of rain forest after strip-cutting in the Peruvian Amazonp. 339
Spatial scale and dispersion pattern of ant- and bird-dispersed herbs in two tropical lowland rain forestsp. 351
Removal of seeds from frugivore defecations by ants in a Costa Rican rain forestp. 363
Predation by vertebrates and invertebrates on the seeds of five canopy tree species of an Amazonian forestp. 375
Indexp. 387
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9780792321415
ISBN-10: 0792321413
Series: Advances in Vegetation Science
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 392
Published: 30th June 1993
Publisher: Springer
Country of Publication: NL
Dimensions (cm): 27.31 x 20.96  x 1.91
Weight (kg): 1.18