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Updated: Jun 17, 2025

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A pollinator crisis can decrease plant abundance despite pollinators being herbivores at the larval stage.

Yi-De Lee1, Tomoyuki Yokoi2, Takefumi Nakazawa3

  • 1Department of Physics, National Cheng Kung University, Tainan City, Taiwan.

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|August 9, 2024
PubMed
Summary
This summary is machine-generated.

Pollinator declines due to environmental stress can impact plant productivity. Our model shows plant abundance decreases with fewer pollinators, especially under certain conditions, highlighting the pollinator crisis for conservation.

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Area of Science:

  • Ecology
  • Conservation Biology
  • Mathematical Biology

Background:

  • Global pollinator decline, termed the pollinator crisis, threatens ecosystems.
  • Concurrent declines in plant populations are less understood.
  • Anthropogenic stresses impact pollinators and potentially herbivores.

Purpose of the Study:

  • To theoretically investigate plant population dynamics under pollinator decline.
  • To explore how environmental stresses on insects affect plant abundance.
  • To understand conditions leading to a "plant crisis".

Main Methods:

  • Developed a theoretical model of plant population dynamics.
  • Incorporated two insect groups: a dual-stage pollinator/herbivore and a pest herbivore.
  • Simulated effects of environmental stresses (increased insect mortality).

Main Results:

  • Environmental stresses can have counterintuitive effects on plant abundance.
  • Plant abundance generally decreases with declining pollinator numbers.
  • Factors like slow plant growth, effective pollination, and pollinator susceptibility exacerbate declines.

Conclusions:

  • Provides a theoretical framework for assessing the pollinator crisis.
  • Highlights the complex interactions between pollinators, herbivores, and plants.
  • Informs biodiversity conservation and agricultural management strategies.