Pollination and seed dispersal are the most threatened processes of plant regeneration

Sci Rep. 2016 Jul 20:6:29839. doi: 10.1038/srep29839.

Abstract

Plant regeneration is essential for maintaining forest biodiversity and ecosystem functioning, which are globally threatened by human disturbance. Here we present the first integrative meta-analysis on how forest disturbance affects multiple ecological processes of plant regeneration including pollination, seed dispersal, seed predation, recruitment and herbivory. We analysed 408 pairwise comparisons of these processes between near-natural and disturbed forests. Human impacts overall reduced plant regeneration. Importantly, only processes early in the regeneration cycle that often depend on plant-animal interactions, i.e. pollination and seed dispersal, were negatively affected. Later processes, i.e. seed predation, recruitment and herbivory, showed overall no significant response to human disturbance. Conserving pollination and seed dispersal, including the animals that provide these services to plants, should become a priority in forest conservation efforts globally.

Publication types

  • Meta-Analysis
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Ecosystem
  • Forests*
  • Herbivory / physiology
  • Humans
  • Models, Theoretical
  • Plant Physiological Phenomena*
  • Pollination / physiology*
  • Seed Dispersal / physiology*