Where the wild bees are: Birds improve indicators of bee richness.

Widespread declines in wild bee populations necessitate urgent action, but insufficient data exist to guide conservation efforts. Addressing this data deficit, we investigated the relative performance of environmental and/or taxon-based indicators to predict wild bee richness in the eastern and cent...

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Main Authors: Josée S Rousseau, Alison Johnston, Amanda D Rodewald
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2025-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0321496
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author Josée S Rousseau
Alison Johnston
Amanda D Rodewald
author_facet Josée S Rousseau
Alison Johnston
Amanda D Rodewald
author_sort Josée S Rousseau
collection DOAJ
description Widespread declines in wild bee populations necessitate urgent action, but insufficient data exist to guide conservation efforts. Addressing this data deficit, we investigated the relative performance of environmental and/or taxon-based indicators to predict wild bee richness in the eastern and central U.S. Our methodology leveraged publicly available data on bees (SCAN and GBIF data repositories), birds (eBird participatory science project) and land cover data (USDA Cropland Data Layer). We used a Bayesian variable selection algorithm to select variables that best predicted species richness of bees using two datasets: a semi-structured dataset covering a wide geographical and temporal range and a structured dataset covering a focused extent with a standardized protocol. We demonstrate that birds add value to land cover data as indicators of wild bee species richness across broad geographies, particularly when using semi-structured data. These improvements likely stem from the demonstrated sensitivity of birds to conditions thought to impact bees but that are missed by remotely sensed environmental data. Importantly, this enables estimation of bee richness in places that don't have direct observations of bees. In the case of wild bees specifically, we suggest that bird and land cover data, when combined, serve as useful indicators to guide monitoring and conservation priorities until the quality and quantity of bee data improve.
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spelling doaj-art-619461f4abb240fa99e7685106ba2bcf2025-08-20T03:51:59ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01204e032149610.1371/journal.pone.0321496Where the wild bees are: Birds improve indicators of bee richness.Josée S RousseauAlison JohnstonAmanda D RodewaldWidespread declines in wild bee populations necessitate urgent action, but insufficient data exist to guide conservation efforts. Addressing this data deficit, we investigated the relative performance of environmental and/or taxon-based indicators to predict wild bee richness in the eastern and central U.S. Our methodology leveraged publicly available data on bees (SCAN and GBIF data repositories), birds (eBird participatory science project) and land cover data (USDA Cropland Data Layer). We used a Bayesian variable selection algorithm to select variables that best predicted species richness of bees using two datasets: a semi-structured dataset covering a wide geographical and temporal range and a structured dataset covering a focused extent with a standardized protocol. We demonstrate that birds add value to land cover data as indicators of wild bee species richness across broad geographies, particularly when using semi-structured data. These improvements likely stem from the demonstrated sensitivity of birds to conditions thought to impact bees but that are missed by remotely sensed environmental data. Importantly, this enables estimation of bee richness in places that don't have direct observations of bees. In the case of wild bees specifically, we suggest that bird and land cover data, when combined, serve as useful indicators to guide monitoring and conservation priorities until the quality and quantity of bee data improve.https://doi.org/10.1371/journal.pone.0321496
spellingShingle Josée S Rousseau
Alison Johnston
Amanda D Rodewald
Where the wild bees are: Birds improve indicators of bee richness.
PLoS ONE
title Where the wild bees are: Birds improve indicators of bee richness.
title_full Where the wild bees are: Birds improve indicators of bee richness.
title_fullStr Where the wild bees are: Birds improve indicators of bee richness.
title_full_unstemmed Where the wild bees are: Birds improve indicators of bee richness.
title_short Where the wild bees are: Birds improve indicators of bee richness.
title_sort where the wild bees are birds improve indicators of bee richness
url https://doi.org/10.1371/journal.pone.0321496
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