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Elevated atmospheric CO2 alters the multi-element stoichiometry of pollen-bearing oak flowers, with possible negative effects on bees.
Filipiak, Zuzanna M; Mayoral, Carolina; Mills, Sophie A; Hayward, Scott A L; Ullah, Sami.
Afiliación
  • Filipiak ZM; Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland. zuzanna.filipiak@uj.edu.pl.
  • Mayoral C; Birmingham Institute of Forest Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT, England.
  • Mills SA; School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
  • Hayward SAL; Birmingham Institute of Forest Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT, England.
  • Ullah S; School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
Oecologia ; 2024 Sep 08.
Article en En | MEDLINE | ID: mdl-39245757
ABSTRACT
Increasing atmospheric CO2 levels change the elemental composition in plants, altering their nutritional quality and affecting consumers and ecosystems. Ecological stoichiometry provides a framework for investigating how CO2-driven nutrient dilution in pollen affects bees by linking changes in pollen chemical element proportions to the nutritional needs of bees. We investigated the consequences of five years of Free Air CO2 Enrichment (FACE) in a mature oak-dominated temperate forest on the elemental composition of English oak (Quercus robur) pollen. We measured the concentrations and proportions of 12 elements (C, N, P, S, K, Na, Ca, Mg, Cu, Zn, Fe, and Mn) in Q. robur pollen-bearing flowers collected from the Birmingham Institute for Forest Research (BIFoR) FACE facility. An elevated CO2 (eCO2) level of 150 ppm above ambient significantly reduced the S, K, and Fe levels and altered the multi-element ratio, with different elements behaving differently. This shift in pollen multi-element composition may have subsequent cascading effects on higher trophic levels. To assess the impact on bees, we calculated the stoichiometric mismatch (a measure of the discrepancy between consumer needs and food quality) for two bee species, Osmia bicornis (red mason bee) and Apis mellifera (honey bee), that consume oak pollen in nature. We observed stoichiometric mismatches for P and S, in pollen under eCO2, which could negatively affect bees. We highlight the need for a comprehensive understanding of the changes in pollen multi-element stoichiometry under eCO2, which leads to nutrient limitations under climate change with consequences for bees.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Oecologia Año: 2024 Tipo del documento: Article País de afiliación: Polonia Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Oecologia Año: 2024 Tipo del documento: Article País de afiliación: Polonia Pais de publicación: Alemania