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In Vitro Rearing of Solitary Bees: A Tool for Assessing Larval Risk Factors

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Published on: July 16, 2018

Pollinator declines: reconciling scales and implications for ecosystem services.

Ignasi Bartomeus¹, Rachael Winfree²

¹Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, SE-75007, Sweden.

|February 21, 2014

Summary

Pollinator declines are not fully understood, but key crop pollinators appear to thrive in human-altered environments, not decline. Further research is needed to assess their impact on food security.

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Area of Science:

Ecology
Conservation Biology
Agricultural Science

Background:

Widespread concern exists regarding pollinator declines and their impact on ecosystem services.
There is a scarcity of scientific data on the magnitude of pollinator declines and their contribution to crop pollination and food security.

Purpose of the Study:

To assess the magnitude of pollinator declines and their impact on crop pollination and food security.
To determine the necessity of local and regional scale studies for understanding pollinator declines.
To investigate species-specific responses to global change across different scales.

Main Methods:

Analysis of recently published data from northeastern North America.
Comparison of pollinator trends at local and regional scales.
Evaluation of species-specific responses to global change.

Main Results:

Studies at both local and regional scales are crucial for understanding pollinator declines.
Species-specific responses to global change are consistent across local and regional scales.
Bee species crucial for crop pollination are not among those showing declining trends; they appear to thrive in human-dominated landscapes.

Conclusions:

Understanding pollinator declines requires integrated local and regional research.
Key crop pollinators demonstrate resilience in human-altered landscapes.
The direct link between pollinator declines and food security needs further investigation.