1. Introduction
  1.1 Background
  1.2 Objectives
2. Plant-Pollinator Interactions
  2.1 Types of pollinators
  2.2 Pollinator-mediated plant reproduction
3. Speciation and Reproductive Isolation
  3.1 Concepts and mechanisms of speciation
  3.2 Reproductive barriers
4. Methods
  4.1 Study sites and plant populations
  4.2 Pollinator observations and identification
  4.3 Genetic analysis and population genetics methods
  4.4 Reproductive isolation assessment
5. Results
  5.1 Pollinator assemblages and plant mating patterns
  5.2 Genetic diversity and population structure
  5.3 Reproductive isolation measures
  5.4 Speciation rates and patterns