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Field Experiments of Pollination Ecology: The Case of Lycoris sanguinea var. sanguinea

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Published on: November 25, 2016

Drought reduces floral resources for pollinators.

Benjamin B Phillips¹, Rosalind F Shaw¹, Matthew J Holland¹

¹Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall, UK.

Global Change Biology

|April 14, 2018

Summary

This summary is machine-generated.

Drought significantly reduces floral resources like nectar and flowers in grasslands, impacting pollinators. Plant community traits did not protect against these widespread drought effects.

Keywords:

Lathyrus pratensis Onobrychis viciifolia Prunella vulgaris calcareous grassland climate change drought stress functional traits nectar pollination water availability

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Establishing Pollination Requirements in Japanese Plum by Phenological Monitoring, Hand Pollinations, Fluorescence Microscopy and Molecular Genotyping

Establishing Pollination Requirements in Japanese Plum by Phenological Monitoring, Hand Pollinations, Fluorescence Microscopy and Molecular Genotyping

Published on: November 9, 2020

Area of Science:

Ecology
Environmental Science
Botany

Background:

Climate change is increasing drought frequency and intensity globally.
Drought induces plant physiological stress, potentially affecting floral resources vital for pollinators.
Limited understanding exists regarding drought's community-level impacts on floral resources and the role of plant functional composition.

Purpose of the Study:

To investigate the impacts of simulated drought on floral resources within calcareous grassland ecosystems.
To explore how plant community functional composition influences drought's effects on floral resource availability.

Main Methods:

Simulated drought conditions using rain shelters in experimental plant communities.
Assessed drought effects on nectar production of three common wildflower species (Lathyrus pratensis, Onobrychis viciifolia, Prunella vulgaris).
Measured drought impacts on floral resource diversity and abundance across plant communities with varying functional traits.

Main Results:

Drought reduced nectar presence in Lathyrus pratensis and Prunella vulgaris, and decreased flower numbers per raceme in Onobrychis viciifolia.
Floral unit abundance decreased across all plant communities under drought, regardless of functional composition.
Floral species richness declined in two of the four plant communities; functional diversity did not enhance drought resistance of floral resources.

Conclusions:

Simulated drought substantially diminishes floral resource availability in calcareous grasslands.
These reductions in flowers, nectar, and pollen have significant implications for pollinator populations and behavior.
Plant community functional composition did not mitigate the negative effects of drought on floral resources in this study.